Actual source code: matis.c
1: /*
2: Creates a matrix class for using the Neumann-Neumann type preconditioners.
3: This stores the matrices in globally unassembled form. Each processor
4: assembles only its local Neumann problem and the parallel matrix vector
5: product is handled "implicitly".
7: Currently this allows for only one subdomain per processor.
8: */
10: #include <petsc/private/matisimpl.h>
11: #include <../src/mat/impls/aij/mpi/mpiaij.h>
12: #include <petsc/private/sfimpl.h>
13: #include <petsc/private/vecimpl.h>
14: #include <petsc/private/hashseti.h>
16: #define MATIS_MAX_ENTRIES_INSERTION 2048
17: static PetscErrorCode MatSetValuesLocal_IS(Mat, PetscInt, const PetscInt *, PetscInt, const PetscInt *, const PetscScalar *, InsertMode);
18: static PetscErrorCode MatSetValuesBlockedLocal_IS(Mat, PetscInt, const PetscInt *, PetscInt, const PetscInt *, const PetscScalar *, InsertMode);
19: static PetscErrorCode MatISSetUpScatters_Private(Mat);
21: static PetscErrorCode MatISContainerDestroyPtAP_Private(void **ptr)
22: {
23: MatISPtAP ptap = (MatISPtAP)*ptr;
25: PetscFunctionBegin;
26: PetscCall(MatDestroySubMatrices(ptap->ris1 ? 2 : 1, &ptap->lP));
27: PetscCall(ISDestroy(&ptap->cis0));
28: PetscCall(ISDestroy(&ptap->cis1));
29: PetscCall(ISDestroy(&ptap->ris0));
30: PetscCall(ISDestroy(&ptap->ris1));
31: PetscCall(PetscFree(ptap));
32: PetscFunctionReturn(PETSC_SUCCESS);
33: }
35: static PetscErrorCode MatPtAPNumeric_IS_XAIJ(Mat A, Mat P, Mat C)
36: {
37: MatISPtAP ptap;
38: Mat_IS *matis = (Mat_IS *)A->data;
39: Mat lA, lC;
40: MatReuse reuse;
41: IS ris[2], cis[2];
42: PetscContainer c;
43: PetscInt n;
45: PetscFunctionBegin;
46: PetscCall(PetscObjectQuery((PetscObject)C, "_MatIS_PtAP", (PetscObject *)&c));
47: PetscCheck(c, PetscObjectComm((PetscObject)C), PETSC_ERR_PLIB, "Missing PtAP information");
48: PetscCall(PetscContainerGetPointer(c, (void **)&ptap));
49: ris[0] = ptap->ris0;
50: ris[1] = ptap->ris1;
51: cis[0] = ptap->cis0;
52: cis[1] = ptap->cis1;
53: n = ptap->ris1 ? 2 : 1;
54: reuse = ptap->lP ? MAT_REUSE_MATRIX : MAT_INITIAL_MATRIX;
55: PetscCall(MatCreateSubMatrices(P, n, ris, cis, reuse, &ptap->lP));
57: PetscCall(MatISGetLocalMat(A, &lA));
58: PetscCall(MatISGetLocalMat(C, &lC));
59: if (ptap->ris1) { /* unsymmetric A mapping */
60: Mat lPt;
62: PetscCall(MatTranspose(ptap->lP[1], MAT_INITIAL_MATRIX, &lPt));
63: PetscCall(MatMatMatMult(lPt, lA, ptap->lP[0], reuse, ptap->fill, &lC));
64: if (matis->storel2l) PetscCall(PetscObjectCompose((PetscObject)A, "_MatIS_PtAP_l2l", (PetscObject)lPt));
65: PetscCall(MatDestroy(&lPt));
66: } else {
67: PetscCall(MatPtAP(lA, ptap->lP[0], reuse, ptap->fill, &lC));
68: if (matis->storel2l) PetscCall(PetscObjectCompose((PetscObject)C, "_MatIS_PtAP_l2l", (PetscObject)ptap->lP[0]));
69: }
70: if (reuse == MAT_INITIAL_MATRIX) {
71: PetscCall(MatISSetLocalMat(C, lC));
72: PetscCall(MatDestroy(&lC));
73: }
74: PetscCall(MatAssemblyBegin(C, MAT_FINAL_ASSEMBLY));
75: PetscCall(MatAssemblyEnd(C, MAT_FINAL_ASSEMBLY));
76: PetscFunctionReturn(PETSC_SUCCESS);
77: }
79: static PetscErrorCode MatGetNonzeroColumnsLocal_Private(Mat PT, IS *cis)
80: {
81: Mat Po, Pd;
82: IS zd, zo;
83: const PetscInt *garray;
84: PetscInt *aux, i, bs;
85: PetscInt dc, stc, oc, ctd, cto;
86: PetscBool ismpiaij, ismpibaij, isseqaij, isseqbaij;
87: MPI_Comm comm;
89: PetscFunctionBegin;
91: PetscAssertPointer(cis, 2);
92: PetscCall(PetscObjectGetComm((PetscObject)PT, &comm));
93: bs = 1;
94: PetscCall(PetscObjectBaseTypeCompare((PetscObject)PT, MATMPIAIJ, &ismpiaij));
95: PetscCall(PetscObjectBaseTypeCompare((PetscObject)PT, MATMPIBAIJ, &ismpibaij));
96: PetscCall(PetscObjectBaseTypeCompare((PetscObject)PT, MATSEQAIJ, &isseqaij));
97: PetscCall(PetscObjectTypeCompare((PetscObject)PT, MATSEQBAIJ, &isseqbaij));
98: if (isseqaij || isseqbaij) {
99: Pd = PT;
100: Po = NULL;
101: garray = NULL;
102: } else if (ismpiaij) {
103: PetscCall(MatMPIAIJGetSeqAIJ(PT, &Pd, &Po, &garray));
104: } else if (ismpibaij) {
105: PetscCall(MatMPIBAIJGetSeqBAIJ(PT, &Pd, &Po, &garray));
106: PetscCall(MatGetBlockSize(PT, &bs));
107: } else SETERRQ(comm, PETSC_ERR_SUP, "Not for matrix type %s", ((PetscObject)PT)->type_name);
109: /* identify any null columns in Pd or Po */
110: /* We use a tolerance comparison since it may happen that, with geometric multigrid,
111: some of the columns are not really zero, but very close to */
112: zo = zd = NULL;
113: if (Po) PetscCall(MatFindNonzeroRowsOrCols_Basic(Po, PETSC_TRUE, PETSC_SMALL, &zo));
114: PetscCall(MatFindNonzeroRowsOrCols_Basic(Pd, PETSC_TRUE, PETSC_SMALL, &zd));
116: PetscCall(MatGetLocalSize(PT, NULL, &dc));
117: PetscCall(MatGetOwnershipRangeColumn(PT, &stc, NULL));
118: if (Po) PetscCall(MatGetLocalSize(Po, NULL, &oc));
119: else oc = 0;
120: PetscCall(PetscMalloc1((dc + oc) / bs, &aux));
121: if (zd) {
122: const PetscInt *idxs;
123: PetscInt nz;
125: /* this will throw an error if bs is not valid */
126: PetscCall(ISSetBlockSize(zd, bs));
127: PetscCall(ISGetLocalSize(zd, &nz));
128: PetscCall(ISGetIndices(zd, &idxs));
129: ctd = nz / bs;
130: for (i = 0; i < ctd; i++) aux[i] = (idxs[bs * i] + stc) / bs;
131: PetscCall(ISRestoreIndices(zd, &idxs));
132: } else {
133: ctd = dc / bs;
134: for (i = 0; i < ctd; i++) aux[i] = i + stc / bs;
135: }
136: if (zo) {
137: const PetscInt *idxs;
138: PetscInt nz;
140: /* this will throw an error if bs is not valid */
141: PetscCall(ISSetBlockSize(zo, bs));
142: PetscCall(ISGetLocalSize(zo, &nz));
143: PetscCall(ISGetIndices(zo, &idxs));
144: cto = nz / bs;
145: for (i = 0; i < cto; i++) aux[i + ctd] = garray[idxs[bs * i] / bs];
146: PetscCall(ISRestoreIndices(zo, &idxs));
147: } else {
148: cto = oc / bs;
149: for (i = 0; i < cto; i++) aux[i + ctd] = garray[i];
150: }
151: PetscCall(ISCreateBlock(comm, bs, ctd + cto, aux, PETSC_OWN_POINTER, cis));
152: PetscCall(ISDestroy(&zd));
153: PetscCall(ISDestroy(&zo));
154: PetscFunctionReturn(PETSC_SUCCESS);
155: }
157: static PetscErrorCode MatPtAPSymbolic_IS_XAIJ(Mat A, Mat P, PetscReal fill, Mat C)
158: {
159: Mat PT, lA;
160: MatISPtAP ptap;
161: ISLocalToGlobalMapping Crl2g, Ccl2g, rl2g, cl2g;
162: PetscContainer c;
163: MatType lmtype;
164: const PetscInt *garray;
165: PetscInt ibs, N, dc;
166: MPI_Comm comm;
168: PetscFunctionBegin;
169: PetscCall(PetscObjectGetComm((PetscObject)A, &comm));
170: PetscCall(MatSetType(C, MATIS));
171: PetscCall(MatISGetLocalMat(A, &lA));
172: PetscCall(MatGetType(lA, &lmtype));
173: PetscCall(MatISSetLocalMatType(C, lmtype));
174: PetscCall(MatGetSize(P, NULL, &N));
175: PetscCall(MatGetLocalSize(P, NULL, &dc));
176: PetscCall(MatSetSizes(C, dc, dc, N, N));
177: /* Not sure about this
178: PetscCall(MatGetBlockSizes(P,NULL,&ibs));
179: PetscCall(MatSetBlockSize(*C,ibs));
180: */
182: PetscCall(PetscNew(&ptap));
183: PetscCall(PetscContainerCreate(PETSC_COMM_SELF, &c));
184: PetscCall(PetscContainerSetPointer(c, ptap));
185: PetscCall(PetscContainerSetCtxDestroy(c, MatISContainerDestroyPtAP_Private));
186: PetscCall(PetscObjectCompose((PetscObject)C, "_MatIS_PtAP", (PetscObject)c));
187: PetscCall(PetscContainerDestroy(&c));
188: ptap->fill = fill;
190: PetscCall(MatISGetLocalToGlobalMapping(A, &rl2g, &cl2g));
192: PetscCall(ISLocalToGlobalMappingGetBlockSize(cl2g, &ibs));
193: PetscCall(ISLocalToGlobalMappingGetSize(cl2g, &N));
194: PetscCall(ISLocalToGlobalMappingGetBlockIndices(cl2g, &garray));
195: PetscCall(ISCreateBlock(comm, ibs, N / ibs, garray, PETSC_COPY_VALUES, &ptap->ris0));
196: PetscCall(ISLocalToGlobalMappingRestoreBlockIndices(cl2g, &garray));
198: PetscCall(MatCreateSubMatrix(P, ptap->ris0, NULL, MAT_INITIAL_MATRIX, &PT));
199: PetscCall(MatGetNonzeroColumnsLocal_Private(PT, &ptap->cis0));
200: PetscCall(ISLocalToGlobalMappingCreateIS(ptap->cis0, &Ccl2g));
201: PetscCall(MatDestroy(&PT));
203: Crl2g = NULL;
204: if (rl2g != cl2g) { /* unsymmetric A mapping */
205: PetscBool same, lsame = PETSC_FALSE;
206: PetscInt N1, ibs1;
208: PetscCall(ISLocalToGlobalMappingGetSize(rl2g, &N1));
209: PetscCall(ISLocalToGlobalMappingGetBlockSize(rl2g, &ibs1));
210: PetscCall(ISLocalToGlobalMappingGetBlockIndices(rl2g, &garray));
211: PetscCall(ISCreateBlock(comm, ibs, N1 / ibs, garray, PETSC_COPY_VALUES, &ptap->ris1));
212: PetscCall(ISLocalToGlobalMappingRestoreBlockIndices(rl2g, &garray));
213: if (ibs1 == ibs && N1 == N) { /* check if the l2gmaps are the same */
214: const PetscInt *i1, *i2;
216: PetscCall(ISBlockGetIndices(ptap->ris0, &i1));
217: PetscCall(ISBlockGetIndices(ptap->ris1, &i2));
218: PetscCall(PetscArraycmp(i1, i2, N, &lsame));
219: }
220: PetscCallMPI(MPIU_Allreduce(&lsame, &same, 1, MPIU_BOOL, MPI_LAND, comm));
221: if (same) {
222: PetscCall(ISDestroy(&ptap->ris1));
223: } else {
224: PetscCall(MatCreateSubMatrix(P, ptap->ris1, NULL, MAT_INITIAL_MATRIX, &PT));
225: PetscCall(MatGetNonzeroColumnsLocal_Private(PT, &ptap->cis1));
226: PetscCall(ISLocalToGlobalMappingCreateIS(ptap->cis1, &Crl2g));
227: PetscCall(MatDestroy(&PT));
228: }
229: }
230: /* Not sure about this
231: if (!Crl2g) {
232: PetscCall(MatGetBlockSize(C,&ibs));
233: PetscCall(ISLocalToGlobalMappingSetBlockSize(Ccl2g,ibs));
234: }
235: */
236: PetscCall(MatSetLocalToGlobalMapping(C, Crl2g ? Crl2g : Ccl2g, Ccl2g));
237: PetscCall(ISLocalToGlobalMappingDestroy(&Crl2g));
238: PetscCall(ISLocalToGlobalMappingDestroy(&Ccl2g));
240: C->ops->ptapnumeric = MatPtAPNumeric_IS_XAIJ;
241: PetscFunctionReturn(PETSC_SUCCESS);
242: }
244: static PetscErrorCode MatProductSymbolic_PtAP_IS_XAIJ(Mat C)
245: {
246: Mat_Product *product = C->product;
247: Mat A = product->A, P = product->B;
248: PetscReal fill = product->fill;
250: PetscFunctionBegin;
251: PetscCall(MatPtAPSymbolic_IS_XAIJ(A, P, fill, C));
252: C->ops->productnumeric = MatProductNumeric_PtAP;
253: PetscFunctionReturn(PETSC_SUCCESS);
254: }
256: static PetscErrorCode MatProductSetFromOptions_IS_XAIJ_PtAP(Mat C)
257: {
258: PetscFunctionBegin;
259: C->ops->productsymbolic = MatProductSymbolic_PtAP_IS_XAIJ;
260: PetscFunctionReturn(PETSC_SUCCESS);
261: }
263: PETSC_INTERN PetscErrorCode MatProductSetFromOptions_IS_XAIJ(Mat C)
264: {
265: Mat_Product *product = C->product;
267: PetscFunctionBegin;
268: if (product->type == MATPRODUCT_PtAP) PetscCall(MatProductSetFromOptions_IS_XAIJ_PtAP(C));
269: PetscFunctionReturn(PETSC_SUCCESS);
270: }
272: static PetscErrorCode MatISContainerDestroyFields_Private(void **ptr)
273: {
274: MatISLocalFields lf = (MatISLocalFields)*ptr;
275: PetscInt i;
277: PetscFunctionBegin;
278: for (i = 0; i < lf->nr; i++) PetscCall(ISDestroy(&lf->rf[i]));
279: for (i = 0; i < lf->nc; i++) PetscCall(ISDestroy(&lf->cf[i]));
280: PetscCall(PetscFree2(lf->rf, lf->cf));
281: PetscCall(PetscFree(lf));
282: PetscFunctionReturn(PETSC_SUCCESS);
283: }
285: static PetscErrorCode MatConvert_SeqXAIJ_IS(Mat A, MatType type, MatReuse reuse, Mat *newmat)
286: {
287: Mat B, lB;
289: PetscFunctionBegin;
290: if (reuse != MAT_REUSE_MATRIX) {
291: ISLocalToGlobalMapping rl2g, cl2g;
292: PetscInt bs;
293: IS is;
295: PetscCall(MatGetBlockSize(A, &bs));
296: PetscCall(ISCreateStride(PetscObjectComm((PetscObject)A), A->rmap->n / bs, 0, 1, &is));
297: if (bs > 1) {
298: IS is2;
299: PetscInt i, *aux;
301: PetscCall(ISGetLocalSize(is, &i));
302: PetscCall(ISGetIndices(is, (const PetscInt **)&aux));
303: PetscCall(ISCreateBlock(PetscObjectComm((PetscObject)A), bs, i, aux, PETSC_COPY_VALUES, &is2));
304: PetscCall(ISRestoreIndices(is, (const PetscInt **)&aux));
305: PetscCall(ISDestroy(&is));
306: is = is2;
307: }
308: PetscCall(ISSetIdentity(is));
309: PetscCall(ISLocalToGlobalMappingCreateIS(is, &rl2g));
310: PetscCall(ISDestroy(&is));
311: PetscCall(ISCreateStride(PetscObjectComm((PetscObject)A), A->cmap->n / bs, 0, 1, &is));
312: if (bs > 1) {
313: IS is2;
314: PetscInt i, *aux;
316: PetscCall(ISGetLocalSize(is, &i));
317: PetscCall(ISGetIndices(is, (const PetscInt **)&aux));
318: PetscCall(ISCreateBlock(PetscObjectComm((PetscObject)A), bs, i, aux, PETSC_COPY_VALUES, &is2));
319: PetscCall(ISRestoreIndices(is, (const PetscInt **)&aux));
320: PetscCall(ISDestroy(&is));
321: is = is2;
322: }
323: PetscCall(ISSetIdentity(is));
324: PetscCall(ISLocalToGlobalMappingCreateIS(is, &cl2g));
325: PetscCall(ISDestroy(&is));
326: PetscCall(MatCreateIS(PetscObjectComm((PetscObject)A), bs, A->rmap->n, A->cmap->n, A->rmap->N, A->cmap->N, rl2g, cl2g, &B));
327: PetscCall(ISLocalToGlobalMappingDestroy(&rl2g));
328: PetscCall(ISLocalToGlobalMappingDestroy(&cl2g));
329: PetscCall(MatDuplicate(A, MAT_COPY_VALUES, &lB));
330: if (reuse == MAT_INITIAL_MATRIX) *newmat = B;
331: } else {
332: B = *newmat;
333: PetscCall(PetscObjectReference((PetscObject)A));
334: lB = A;
335: }
336: PetscCall(MatISSetLocalMat(B, lB));
337: PetscCall(MatDestroy(&lB));
338: PetscCall(MatAssemblyBegin(B, MAT_FINAL_ASSEMBLY));
339: PetscCall(MatAssemblyEnd(B, MAT_FINAL_ASSEMBLY));
340: if (reuse == MAT_INPLACE_MATRIX) PetscCall(MatHeaderReplace(A, &B));
341: PetscFunctionReturn(PETSC_SUCCESS);
342: }
344: static PetscErrorCode MatISScaleDisassembling_Private(Mat A)
345: {
346: Mat_IS *matis = (Mat_IS *)A->data;
347: PetscScalar *aa;
348: const PetscInt *ii, *jj;
349: PetscInt i, n, m;
350: PetscInt *ecount, **eneighs;
351: PetscBool flg;
353: PetscFunctionBegin;
354: PetscCall(MatGetRowIJ(matis->A, 0, PETSC_FALSE, PETSC_FALSE, &m, &ii, &jj, &flg));
355: PetscCheck(flg, PETSC_COMM_SELF, PETSC_ERR_SUP, "Cannot get IJ structure");
356: PetscCall(ISLocalToGlobalMappingGetNodeInfo(matis->rmapping, &n, &ecount, &eneighs));
357: PetscCheck(m == n, PETSC_COMM_SELF, PETSC_ERR_PLIB, "Unexpected %" PetscInt_FMT " != %" PetscInt_FMT, m, n);
358: PetscCall(MatSeqAIJGetArray(matis->A, &aa));
359: for (i = 0; i < n; i++) {
360: if (ecount[i] > 1) {
361: PetscInt j;
363: for (j = ii[i]; j < ii[i + 1]; j++) {
364: PetscInt i2 = jj[j], p, p2;
365: PetscReal scal = 0.0;
367: for (p = 0; p < ecount[i]; p++) {
368: for (p2 = 0; p2 < ecount[i2]; p2++) {
369: if (eneighs[i][p] == eneighs[i2][p2]) {
370: scal += 1.0;
371: break;
372: }
373: }
374: }
375: if (scal) aa[j] /= scal;
376: }
377: }
378: }
379: PetscCall(ISLocalToGlobalMappingRestoreNodeInfo(matis->rmapping, &n, &ecount, &eneighs));
380: PetscCall(MatSeqAIJRestoreArray(matis->A, &aa));
381: PetscCall(MatRestoreRowIJ(matis->A, 0, PETSC_FALSE, PETSC_FALSE, &m, &ii, &jj, &flg));
382: PetscCheck(flg, PETSC_COMM_SELF, PETSC_ERR_SUP, "Cannot restore IJ structure");
383: PetscFunctionReturn(PETSC_SUCCESS);
384: }
386: typedef enum {
387: MAT_IS_DISASSEMBLE_L2G_NATURAL,
388: MAT_IS_DISASSEMBLE_L2G_MAT,
389: MAT_IS_DISASSEMBLE_L2G_ND
390: } MatISDisassemblel2gType;
392: static PetscErrorCode MatMPIXAIJComputeLocalToGlobalMapping_Private(Mat A, ISLocalToGlobalMapping *l2g)
393: {
394: Mat Ad, Ao;
395: IS is, ndmap, ndsub;
396: MPI_Comm comm;
397: const PetscInt *garray, *ndmapi;
398: PetscInt bs, i, cnt, nl, *ncount, *ndmapc;
399: PetscBool ismpiaij, ismpibaij;
400: const char *const MatISDisassemblel2gTypes[] = {"NATURAL", "MAT", "ND", "MatISDisassemblel2gType", "MAT_IS_DISASSEMBLE_L2G_", NULL};
401: MatISDisassemblel2gType mode = MAT_IS_DISASSEMBLE_L2G_NATURAL;
402: MatPartitioning part;
403: PetscSF sf;
404: PetscObject dm;
406: PetscFunctionBegin;
407: PetscOptionsBegin(PetscObjectComm((PetscObject)A), ((PetscObject)A)->prefix, "MatIS l2g disassembling options", "Mat");
408: PetscCall(PetscOptionsEnum("-mat_is_disassemble_l2g_type", "Type of local-to-global mapping to be used for disassembling", "MatISDisassemblel2gType", MatISDisassemblel2gTypes, (PetscEnum)mode, (PetscEnum *)&mode, NULL));
409: PetscOptionsEnd();
410: if (mode == MAT_IS_DISASSEMBLE_L2G_MAT) {
411: PetscCall(MatGetLocalToGlobalMapping(A, l2g, NULL));
412: PetscFunctionReturn(PETSC_SUCCESS);
413: }
414: PetscCall(PetscObjectGetComm((PetscObject)A, &comm));
415: PetscCall(PetscObjectBaseTypeCompare((PetscObject)A, MATMPIAIJ, &ismpiaij));
416: PetscCall(PetscObjectBaseTypeCompare((PetscObject)A, MATMPIBAIJ, &ismpibaij));
417: PetscCall(MatGetBlockSize(A, &bs));
418: switch (mode) {
419: case MAT_IS_DISASSEMBLE_L2G_ND:
420: PetscCall(MatPartitioningCreate(comm, &part));
421: PetscCall(MatPartitioningSetAdjacency(part, A));
422: PetscCall(PetscObjectSetOptionsPrefix((PetscObject)part, ((PetscObject)A)->prefix));
423: PetscCall(MatPartitioningSetFromOptions(part));
424: PetscCall(MatPartitioningApplyND(part, &ndmap));
425: PetscCall(MatPartitioningDestroy(&part));
426: PetscCall(ISBuildTwoSided(ndmap, NULL, &ndsub));
427: PetscCall(MatMPIAIJSetUseScalableIncreaseOverlap(A, PETSC_TRUE));
428: PetscCall(MatIncreaseOverlap(A, 1, &ndsub, 1));
429: PetscCall(ISLocalToGlobalMappingCreateIS(ndsub, l2g));
431: /* it may happen that a separator node is not properly shared */
432: PetscCall(ISLocalToGlobalMappingGetNodeInfo(*l2g, &nl, &ncount, NULL));
433: PetscCall(PetscSFCreate(comm, &sf));
434: PetscCall(ISLocalToGlobalMappingGetIndices(*l2g, &garray));
435: PetscCall(PetscSFSetGraphLayout(sf, A->rmap, nl, NULL, PETSC_OWN_POINTER, garray));
436: PetscCall(ISLocalToGlobalMappingRestoreIndices(*l2g, &garray));
437: PetscCall(PetscCalloc1(A->rmap->n, &ndmapc));
438: PetscCall(PetscSFReduceBegin(sf, MPIU_INT, ncount, ndmapc, MPI_REPLACE));
439: PetscCall(PetscSFReduceEnd(sf, MPIU_INT, ncount, ndmapc, MPI_REPLACE));
440: PetscCall(ISLocalToGlobalMappingRestoreNodeInfo(*l2g, NULL, &ncount, NULL));
441: PetscCall(ISGetIndices(ndmap, &ndmapi));
442: for (i = 0, cnt = 0; i < A->rmap->n; i++)
443: if (ndmapi[i] < 0 && ndmapc[i] < 2) cnt++;
445: PetscCallMPI(MPIU_Allreduce(&cnt, &i, 1, MPIU_INT, MPI_MAX, comm));
446: if (i) { /* we detected isolated separator nodes */
447: Mat A2, A3;
448: IS *workis, is2;
449: PetscScalar *vals;
450: PetscInt gcnt = i, *dnz, *onz, j, *lndmapi;
451: ISLocalToGlobalMapping ll2g;
452: PetscBool flg;
453: const PetscInt *ii, *jj;
455: /* communicate global id of separators */
456: MatPreallocateBegin(comm, A->rmap->n, A->cmap->n, dnz, onz);
457: for (i = 0, cnt = 0; i < A->rmap->n; i++) dnz[i] = ndmapi[i] < 0 ? i + A->rmap->rstart : -1;
459: PetscCall(PetscMalloc1(nl, &lndmapi));
460: PetscCall(PetscSFBcastBegin(sf, MPIU_INT, dnz, lndmapi, MPI_REPLACE));
462: /* compute adjacency of isolated separators node */
463: PetscCall(PetscMalloc1(gcnt, &workis));
464: for (i = 0, cnt = 0; i < A->rmap->n; i++) {
465: if (ndmapi[i] < 0 && ndmapc[i] < 2) PetscCall(ISCreateStride(comm, 1, i + A->rmap->rstart, 1, &workis[cnt++]));
466: }
467: for (i = cnt; i < gcnt; i++) PetscCall(ISCreateStride(comm, 0, 0, 1, &workis[i]));
468: for (i = 0; i < gcnt; i++) {
469: PetscCall(PetscObjectSetName((PetscObject)workis[i], "ISOLATED"));
470: PetscCall(ISViewFromOptions(workis[i], NULL, "-view_isolated_separators"));
471: }
473: /* no communications since all the ISes correspond to locally owned rows */
474: PetscCall(MatIncreaseOverlap(A, gcnt, workis, 1));
476: /* end communicate global id of separators */
477: PetscCall(PetscSFBcastEnd(sf, MPIU_INT, dnz, lndmapi, MPI_REPLACE));
479: /* communicate new layers : create a matrix and transpose it */
480: PetscCall(PetscArrayzero(dnz, A->rmap->n));
481: PetscCall(PetscArrayzero(onz, A->rmap->n));
482: for (i = 0, j = 0; i < A->rmap->n; i++) {
483: if (ndmapi[i] < 0 && ndmapc[i] < 2) {
484: const PetscInt *idxs;
485: PetscInt s;
487: PetscCall(ISGetLocalSize(workis[j], &s));
488: PetscCall(ISGetIndices(workis[j], &idxs));
489: PetscCall(MatPreallocateSet(i + A->rmap->rstart, s, idxs, dnz, onz));
490: j++;
491: }
492: }
493: PetscCheck(j == cnt, PETSC_COMM_SELF, PETSC_ERR_PLIB, "Unexpected local count %" PetscInt_FMT " != %" PetscInt_FMT, j, cnt);
495: for (i = 0; i < gcnt; i++) {
496: PetscCall(PetscObjectSetName((PetscObject)workis[i], "EXTENDED"));
497: PetscCall(ISViewFromOptions(workis[i], NULL, "-view_isolated_separators"));
498: }
500: for (i = 0, j = 0; i < A->rmap->n; i++) j = PetscMax(j, dnz[i] + onz[i]);
501: PetscCall(PetscMalloc1(j, &vals));
502: for (i = 0; i < j; i++) vals[i] = 1.0;
504: PetscCall(MatCreate(comm, &A2));
505: PetscCall(MatSetType(A2, MATMPIAIJ));
506: PetscCall(MatSetSizes(A2, A->rmap->n, A->cmap->n, A->rmap->N, A->cmap->N));
507: PetscCall(MatMPIAIJSetPreallocation(A2, 0, dnz, 0, onz));
508: PetscCall(MatSetOption(A2, MAT_NO_OFF_PROC_ENTRIES, PETSC_TRUE));
509: for (i = 0, j = 0; i < A2->rmap->n; i++) {
510: PetscInt row = i + A2->rmap->rstart, s = dnz[i] + onz[i];
511: const PetscInt *idxs;
513: if (s) {
514: PetscCall(ISGetIndices(workis[j], &idxs));
515: PetscCall(MatSetValues(A2, 1, &row, s, idxs, vals, INSERT_VALUES));
516: PetscCall(ISRestoreIndices(workis[j], &idxs));
517: j++;
518: }
519: }
520: PetscCheck(j == cnt, PETSC_COMM_SELF, PETSC_ERR_PLIB, "Unexpected local count %" PetscInt_FMT " != %" PetscInt_FMT, j, cnt);
521: PetscCall(PetscFree(vals));
522: PetscCall(MatAssemblyBegin(A2, MAT_FINAL_ASSEMBLY));
523: PetscCall(MatAssemblyEnd(A2, MAT_FINAL_ASSEMBLY));
524: PetscCall(MatTranspose(A2, MAT_INPLACE_MATRIX, &A2));
526: /* extract submatrix corresponding to the coupling "owned separators" x "isolated separators" */
527: for (i = 0, j = 0; i < nl; i++)
528: if (lndmapi[i] >= 0) lndmapi[j++] = lndmapi[i];
529: PetscCall(ISCreateGeneral(comm, j, lndmapi, PETSC_USE_POINTER, &is));
530: PetscCall(MatMPIAIJGetLocalMatCondensed(A2, MAT_INITIAL_MATRIX, &is, NULL, &A3));
531: PetscCall(ISDestroy(&is));
532: PetscCall(MatDestroy(&A2));
534: /* extend local to global map to include connected isolated separators */
535: PetscCall(PetscObjectQuery((PetscObject)A3, "_petsc_GetLocalMatCondensed_iscol", (PetscObject *)&is));
536: PetscCheck(is, PETSC_COMM_SELF, PETSC_ERR_PLIB, "Missing column map");
537: PetscCall(ISLocalToGlobalMappingCreateIS(is, &ll2g));
538: PetscCall(MatGetRowIJ(A3, 0, PETSC_FALSE, PETSC_FALSE, &i, &ii, &jj, &flg));
539: PetscCheck(flg, PETSC_COMM_SELF, PETSC_ERR_SUP, "Cannot get IJ structure");
540: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, ii[i], jj, PETSC_COPY_VALUES, &is));
541: PetscCall(MatRestoreRowIJ(A3, 0, PETSC_FALSE, PETSC_FALSE, &i, &ii, &jj, &flg));
542: PetscCheck(flg, PETSC_COMM_SELF, PETSC_ERR_SUP, "Cannot get IJ structure");
543: PetscCall(ISLocalToGlobalMappingApplyIS(ll2g, is, &is2));
544: PetscCall(ISDestroy(&is));
545: PetscCall(ISLocalToGlobalMappingDestroy(&ll2g));
547: /* add new nodes to the local-to-global map */
548: PetscCall(ISLocalToGlobalMappingDestroy(l2g));
549: PetscCall(ISExpand(ndsub, is2, &is));
550: PetscCall(ISDestroy(&is2));
551: PetscCall(ISLocalToGlobalMappingCreateIS(is, l2g));
552: PetscCall(ISDestroy(&is));
554: PetscCall(MatDestroy(&A3));
555: PetscCall(PetscFree(lndmapi));
556: MatPreallocateEnd(dnz, onz);
557: for (i = 0; i < gcnt; i++) PetscCall(ISDestroy(&workis[i]));
558: PetscCall(PetscFree(workis));
559: }
560: PetscCall(ISRestoreIndices(ndmap, &ndmapi));
561: PetscCall(PetscSFDestroy(&sf));
562: PetscCall(PetscFree(ndmapc));
563: PetscCall(ISDestroy(&ndmap));
564: PetscCall(ISDestroy(&ndsub));
565: PetscCall(ISLocalToGlobalMappingSetBlockSize(*l2g, bs));
566: PetscCall(ISLocalToGlobalMappingViewFromOptions(*l2g, NULL, "-mat_is_nd_l2g_view"));
567: break;
568: case MAT_IS_DISASSEMBLE_L2G_NATURAL:
569: PetscCall(PetscObjectQuery((PetscObject)A, "__PETSc_dm", &dm));
570: if (dm) { /* if a matrix comes from a DM, most likely we can use the l2gmap if any */
571: PetscCall(MatGetLocalToGlobalMapping(A, l2g, NULL));
572: PetscCall(PetscObjectReference((PetscObject)*l2g));
573: if (*l2g) PetscFunctionReturn(PETSC_SUCCESS);
574: }
575: if (ismpiaij) {
576: PetscCall(MatMPIAIJGetSeqAIJ(A, &Ad, &Ao, &garray));
577: } else if (ismpibaij) {
578: PetscCall(MatMPIBAIJGetSeqBAIJ(A, &Ad, &Ao, &garray));
579: } else SETERRQ(comm, PETSC_ERR_SUP, "Type %s", ((PetscObject)A)->type_name);
580: if (A->rmap->n) {
581: PetscInt dc, oc, stc, *aux;
583: PetscCall(MatGetLocalSize(Ad, NULL, &dc));
584: PetscCall(MatGetLocalSize(Ao, NULL, &oc));
585: PetscCheck(!oc || garray, PETSC_COMM_SELF, PETSC_ERR_ARG_WRONGSTATE, "garray not present");
586: PetscCall(MatGetOwnershipRangeColumn(A, &stc, NULL));
587: PetscCall(PetscMalloc1((dc + oc) / bs, &aux));
588: for (i = 0; i < dc / bs; i++) aux[i] = i + stc / bs;
589: for (i = 0; i < oc / bs; i++) aux[i + dc / bs] = (ismpiaij ? garray[i * bs] / bs : garray[i]);
590: PetscCall(ISCreateBlock(comm, bs, (dc + oc) / bs, aux, PETSC_OWN_POINTER, &is));
591: } else {
592: PetscCall(ISCreateBlock(comm, 1, 0, NULL, PETSC_OWN_POINTER, &is));
593: }
594: PetscCall(ISLocalToGlobalMappingCreateIS(is, l2g));
595: PetscCall(ISDestroy(&is));
596: break;
597: default:
598: SETERRQ(comm, PETSC_ERR_ARG_WRONG, "Unsupported l2g disassembling type %d", mode);
599: }
600: PetscFunctionReturn(PETSC_SUCCESS);
601: }
603: PETSC_INTERN PetscErrorCode MatConvert_XAIJ_IS(Mat A, MatType type, MatReuse reuse, Mat *newmat)
604: {
605: Mat lA, Ad, Ao, B = NULL;
606: ISLocalToGlobalMapping rl2g, cl2g;
607: IS is;
608: MPI_Comm comm;
609: void *ptrs[2];
610: const char *names[2] = {"_convert_csr_aux", "_convert_csr_data"};
611: const PetscInt *garray;
612: PetscScalar *dd, *od, *aa, *data;
613: const PetscInt *di, *dj, *oi, *oj;
614: const PetscInt *odi, *odj, *ooi, *ooj;
615: PetscInt *aux, *ii, *jj;
616: PetscInt rbs, cbs, lc, dr, dc, oc, str, stc, nnz, i, jd, jo, cum;
617: PetscBool flg, ismpiaij, ismpibaij, was_inplace = PETSC_FALSE, cong;
618: PetscMPIInt size;
620: PetscFunctionBegin;
621: PetscCall(PetscObjectGetComm((PetscObject)A, &comm));
622: PetscCallMPI(MPI_Comm_size(comm, &size));
623: if (size == 1) {
624: PetscCall(MatConvert_SeqXAIJ_IS(A, type, reuse, newmat));
625: PetscFunctionReturn(PETSC_SUCCESS);
626: }
627: PetscCall(MatGetBlockSizes(A, &rbs, &cbs));
628: PetscCall(MatHasCongruentLayouts(A, &cong));
629: if (reuse != MAT_REUSE_MATRIX && cong && rbs == cbs) {
630: PetscCall(MatMPIXAIJComputeLocalToGlobalMapping_Private(A, &rl2g));
631: PetscCall(MatCreate(comm, &B));
632: PetscCall(MatSetType(B, MATIS));
633: PetscCall(MatSetSizes(B, A->rmap->n, A->rmap->n, A->rmap->N, A->rmap->N));
634: PetscCall(MatSetLocalToGlobalMapping(B, rl2g, rl2g));
635: PetscCall(MatSetBlockSizes(B, rbs, rbs));
636: PetscCall(ISLocalToGlobalMappingDestroy(&rl2g));
637: if (reuse == MAT_INPLACE_MATRIX) was_inplace = PETSC_TRUE;
638: reuse = MAT_REUSE_MATRIX;
639: }
640: if (reuse == MAT_REUSE_MATRIX) {
641: Mat *newlA, lA;
642: IS rows, cols;
643: const PetscInt *ridx, *cidx;
644: PetscInt nr, nc;
646: if (!B) B = *newmat;
647: PetscCall(MatISGetLocalToGlobalMapping(B, &rl2g, &cl2g));
648: PetscCall(ISLocalToGlobalMappingGetBlockIndices(rl2g, &ridx));
649: PetscCall(ISLocalToGlobalMappingGetBlockIndices(cl2g, &cidx));
650: PetscCall(ISLocalToGlobalMappingGetSize(rl2g, &nr));
651: PetscCall(ISLocalToGlobalMappingGetSize(cl2g, &nc));
652: PetscCall(ISLocalToGlobalMappingGetBlockSize(rl2g, &rbs));
653: PetscCall(ISLocalToGlobalMappingGetBlockSize(cl2g, &cbs));
654: PetscCall(ISCreateBlock(comm, rbs, nr / rbs, ridx, PETSC_USE_POINTER, &rows));
655: if (rl2g != cl2g) {
656: PetscCall(ISCreateBlock(comm, cbs, nc / cbs, cidx, PETSC_USE_POINTER, &cols));
657: } else {
658: PetscCall(PetscObjectReference((PetscObject)rows));
659: cols = rows;
660: }
661: PetscCall(MatISGetLocalMat(B, &lA));
662: PetscCall(MatCreateSubMatrices(A, 1, &rows, &cols, MAT_INITIAL_MATRIX, &newlA));
663: PetscCall(MatConvert(newlA[0], MATSEQAIJ, MAT_INPLACE_MATRIX, &newlA[0]));
664: PetscCall(ISLocalToGlobalMappingRestoreBlockIndices(rl2g, &ridx));
665: PetscCall(ISLocalToGlobalMappingRestoreBlockIndices(cl2g, &cidx));
666: PetscCall(ISDestroy(&rows));
667: PetscCall(ISDestroy(&cols));
668: if (!lA->preallocated) { /* first time */
669: PetscCall(MatDuplicate(newlA[0], MAT_COPY_VALUES, &lA));
670: PetscCall(MatISSetLocalMat(B, lA));
671: PetscCall(PetscObjectDereference((PetscObject)lA));
672: }
673: PetscCall(MatCopy(newlA[0], lA, SAME_NONZERO_PATTERN));
674: PetscCall(MatDestroySubMatrices(1, &newlA));
675: PetscCall(MatISScaleDisassembling_Private(B));
676: PetscCall(MatAssemblyBegin(B, MAT_FINAL_ASSEMBLY));
677: PetscCall(MatAssemblyEnd(B, MAT_FINAL_ASSEMBLY));
678: if (was_inplace) PetscCall(MatHeaderReplace(A, &B));
679: else *newmat = B;
680: PetscFunctionReturn(PETSC_SUCCESS);
681: }
682: /* general case, just compress out the column space */
683: PetscCall(PetscObjectBaseTypeCompare((PetscObject)A, MATMPIAIJ, &ismpiaij));
684: PetscCall(PetscObjectBaseTypeCompare((PetscObject)A, MATMPIBAIJ, &ismpibaij));
685: if (ismpiaij) {
686: cbs = 1; /* We cannot guarantee the off-process matrix will respect the column block size */
687: PetscCall(MatMPIAIJGetSeqAIJ(A, &Ad, &Ao, &garray));
688: } else if (ismpibaij) {
689: PetscCall(MatMPIBAIJGetSeqBAIJ(A, &Ad, &Ao, &garray));
690: PetscCall(MatConvert(Ad, MATSEQAIJ, MAT_INITIAL_MATRIX, &Ad));
691: PetscCall(MatConvert(Ao, MATSEQAIJ, MAT_INITIAL_MATRIX, &Ao));
692: } else SETERRQ(comm, PETSC_ERR_SUP, "Type %s", ((PetscObject)A)->type_name);
693: PetscCall(MatSeqAIJGetArray(Ad, &dd));
694: PetscCall(MatSeqAIJGetArray(Ao, &od));
696: /* access relevant information from MPIAIJ */
697: PetscCall(MatGetOwnershipRange(A, &str, NULL));
698: PetscCall(MatGetOwnershipRangeColumn(A, &stc, NULL));
699: PetscCall(MatGetLocalSize(Ad, &dr, &dc));
700: PetscCall(MatGetLocalSize(Ao, NULL, &oc));
701: PetscCheck(!oc || garray, PETSC_COMM_SELF, PETSC_ERR_ARG_WRONGSTATE, "garray not present");
703: PetscCall(MatGetRowIJ(Ad, 0, PETSC_FALSE, PETSC_FALSE, &i, &di, &dj, &flg));
704: PetscCheck(flg, PETSC_COMM_SELF, PETSC_ERR_SUP, "Cannot get IJ structure");
705: PetscCall(MatGetRowIJ(Ao, 0, PETSC_FALSE, PETSC_FALSE, &i, &oi, &oj, &flg));
706: PetscCheck(flg, PETSC_COMM_SELF, PETSC_ERR_SUP, "Cannot get IJ structure");
707: nnz = di[dr] + oi[dr];
708: /* store original pointers to be restored later */
709: odi = di;
710: odj = dj;
711: ooi = oi;
712: ooj = oj;
714: /* generate l2g maps for rows and cols */
715: PetscCall(ISCreateStride(comm, dr / rbs, str / rbs, 1, &is));
716: if (rbs > 1) {
717: IS is2;
719: PetscCall(ISGetLocalSize(is, &i));
720: PetscCall(ISGetIndices(is, (const PetscInt **)&aux));
721: PetscCall(ISCreateBlock(comm, rbs, i, aux, PETSC_COPY_VALUES, &is2));
722: PetscCall(ISRestoreIndices(is, (const PetscInt **)&aux));
723: PetscCall(ISDestroy(&is));
724: is = is2;
725: }
726: PetscCall(ISLocalToGlobalMappingCreateIS(is, &rl2g));
727: PetscCall(ISDestroy(&is));
728: if (dr) {
729: PetscCall(PetscMalloc1((dc + oc) / cbs, &aux));
730: for (i = 0; i < dc / cbs; i++) aux[i] = i + stc / cbs;
731: for (i = 0; i < oc / cbs; i++) aux[i + dc / cbs] = garray[i];
732: PetscCall(ISCreateBlock(comm, cbs, (dc + oc) / cbs, aux, PETSC_OWN_POINTER, &is));
733: lc = dc + oc;
734: } else {
735: PetscCall(ISCreateBlock(comm, cbs, 0, NULL, PETSC_OWN_POINTER, &is));
736: lc = 0;
737: }
738: PetscCall(ISLocalToGlobalMappingCreateIS(is, &cl2g));
739: PetscCall(ISDestroy(&is));
741: /* create MATIS object */
742: PetscCall(MatCreate(comm, &B));
743: PetscCall(MatSetSizes(B, dr, dc, PETSC_DECIDE, PETSC_DECIDE));
744: PetscCall(MatSetType(B, MATIS));
745: PetscCall(MatSetBlockSizes(B, rbs, cbs));
746: PetscCall(MatSetLocalToGlobalMapping(B, rl2g, cl2g));
747: PetscCall(ISLocalToGlobalMappingDestroy(&rl2g));
748: PetscCall(ISLocalToGlobalMappingDestroy(&cl2g));
750: /* merge local matrices */
751: PetscCall(PetscMalloc1(nnz + dr + 1, &aux));
752: PetscCall(PetscMalloc1(nnz, &data));
753: ii = aux;
754: jj = aux + dr + 1;
755: aa = data;
756: *ii = *(di++) + *(oi++);
757: for (jd = 0, jo = 0, cum = 0; *ii < nnz; cum++) {
758: for (; jd < *di; jd++) {
759: *jj++ = *dj++;
760: *aa++ = *dd++;
761: }
762: for (; jo < *oi; jo++) {
763: *jj++ = *oj++ + dc;
764: *aa++ = *od++;
765: }
766: *(++ii) = *(di++) + *(oi++);
767: }
768: for (; cum < dr; cum++) *(++ii) = nnz;
770: PetscCall(MatRestoreRowIJ(Ad, 0, PETSC_FALSE, PETSC_FALSE, &i, &odi, &odj, &flg));
771: PetscCheck(flg, PETSC_COMM_SELF, PETSC_ERR_SUP, "Cannot restore IJ structure");
772: PetscCall(MatRestoreRowIJ(Ao, 0, PETSC_FALSE, PETSC_FALSE, &i, &ooi, &ooj, &flg));
773: PetscCheck(flg, PETSC_COMM_SELF, PETSC_ERR_SUP, "Cannot restore IJ structure");
774: PetscCall(MatSeqAIJRestoreArray(Ad, &dd));
775: PetscCall(MatSeqAIJRestoreArray(Ao, &od));
777: ii = aux;
778: jj = aux + dr + 1;
779: aa = data;
780: PetscCall(MatCreateSeqAIJWithArrays(PETSC_COMM_SELF, dr, lc, ii, jj, aa, &lA));
782: /* create containers to destroy the data */
783: ptrs[0] = aux;
784: ptrs[1] = data;
785: for (i = 0; i < 2; i++) PetscCall(PetscObjectContainerCompose((PetscObject)lA, names[i], ptrs[i], PetscCtxDestroyDefault));
786: if (ismpibaij) { /* destroy converted local matrices */
787: PetscCall(MatDestroy(&Ad));
788: PetscCall(MatDestroy(&Ao));
789: }
791: /* finalize matrix */
792: PetscCall(MatISSetLocalMat(B, lA));
793: PetscCall(MatDestroy(&lA));
794: PetscCall(MatAssemblyBegin(B, MAT_FINAL_ASSEMBLY));
795: PetscCall(MatAssemblyEnd(B, MAT_FINAL_ASSEMBLY));
796: if (reuse == MAT_INPLACE_MATRIX) {
797: PetscCall(MatHeaderReplace(A, &B));
798: } else *newmat = B;
799: PetscFunctionReturn(PETSC_SUCCESS);
800: }
802: PETSC_INTERN PetscErrorCode MatConvert_Nest_IS(Mat A, MatType type, MatReuse reuse, Mat *newmat)
803: {
804: Mat **nest, *snest, **rnest, lA, B;
805: IS *iscol, *isrow, *islrow, *islcol;
806: ISLocalToGlobalMapping rl2g, cl2g;
807: MPI_Comm comm;
808: PetscInt *lr, *lc, *l2gidxs;
809: PetscInt i, j, nr, nc, rbs, cbs;
810: PetscBool convert, lreuse, *istrans;
811: PetscBool3 allow_repeated = PETSC_BOOL3_UNKNOWN;
813: PetscFunctionBegin;
814: PetscCall(MatNestGetSubMats(A, &nr, &nc, &nest));
815: lreuse = PETSC_FALSE;
816: rnest = NULL;
817: if (reuse == MAT_REUSE_MATRIX) {
818: PetscBool ismatis, isnest;
820: PetscCall(PetscObjectTypeCompare((PetscObject)*newmat, MATIS, &ismatis));
821: PetscCheck(ismatis, PetscObjectComm((PetscObject)*newmat), PETSC_ERR_USER, "Cannot reuse matrix of type %s", ((PetscObject)*newmat)->type_name);
822: PetscCall(MatISGetLocalMat(*newmat, &lA));
823: PetscCall(PetscObjectTypeCompare((PetscObject)lA, MATNEST, &isnest));
824: if (isnest) {
825: PetscCall(MatNestGetSubMats(lA, &i, &j, &rnest));
826: lreuse = (PetscBool)(i == nr && j == nc);
827: if (!lreuse) rnest = NULL;
828: }
829: }
830: PetscCall(PetscObjectGetComm((PetscObject)A, &comm));
831: PetscCall(PetscCalloc2(nr, &lr, nc, &lc));
832: PetscCall(PetscCalloc6(nr, &isrow, nc, &iscol, nr, &islrow, nc, &islcol, nr * nc, &snest, nr * nc, &istrans));
833: PetscCall(MatNestGetISs(A, isrow, iscol));
834: for (i = 0; i < nr; i++) {
835: for (j = 0; j < nc; j++) {
836: PetscBool ismatis, sallow;
837: PetscInt l1, l2, lb1, lb2, ij = i * nc + j;
839: /* Null matrix pointers are allowed in MATNEST */
840: if (!nest[i][j]) continue;
842: /* Nested matrices should be of type MATIS */
843: PetscCall(PetscObjectTypeCompare((PetscObject)nest[i][j], MATTRANSPOSEVIRTUAL, &istrans[ij]));
844: if (istrans[ij]) {
845: Mat T, lT;
846: PetscCall(MatTransposeGetMat(nest[i][j], &T));
847: PetscCall(PetscObjectTypeCompare((PetscObject)T, MATIS, &ismatis));
848: PetscCheck(ismatis, comm, PETSC_ERR_SUP, "Cannot convert from MATNEST to MATIS! Matrix block (%" PetscInt_FMT ",%" PetscInt_FMT ") (transposed) is not of type MATIS", i, j);
849: PetscCall(MatISGetAllowRepeated(T, &sallow));
850: PetscCall(MatISGetLocalMat(T, &lT));
851: PetscCall(MatCreateTranspose(lT, &snest[ij]));
852: } else {
853: PetscCall(PetscObjectTypeCompare((PetscObject)nest[i][j], MATIS, &ismatis));
854: PetscCheck(ismatis, comm, PETSC_ERR_SUP, "Cannot convert from MATNEST to MATIS! Matrix block (%" PetscInt_FMT ",%" PetscInt_FMT ") is not of type MATIS", i, j);
855: PetscCall(MatISGetAllowRepeated(nest[i][j], &sallow));
856: PetscCall(MatISGetLocalMat(nest[i][j], &snest[ij]));
857: }
858: if (allow_repeated == PETSC_BOOL3_UNKNOWN) allow_repeated = PetscBoolToBool3(sallow);
859: PetscCheck(sallow == PetscBool3ToBool(allow_repeated), comm, PETSC_ERR_SUP, "Cannot mix repeated and non repeated maps");
861: /* Check compatibility of local sizes */
862: PetscCall(MatGetSize(snest[ij], &l1, &l2));
863: PetscCall(MatGetBlockSizes(snest[ij], &lb1, &lb2));
864: if (!l1 || !l2) continue;
865: PetscCheck(!lr[i] || l1 == lr[i], PETSC_COMM_SELF, PETSC_ERR_SUP, "Cannot convert from MATNEST to MATIS! Matrix block (%" PetscInt_FMT ",%" PetscInt_FMT ") has invalid local size %" PetscInt_FMT " != %" PetscInt_FMT, i, j, lr[i], l1);
866: PetscCheck(!lc[j] || l2 == lc[j], PETSC_COMM_SELF, PETSC_ERR_SUP, "Cannot convert from MATNEST to MATIS! Matrix block (%" PetscInt_FMT ",%" PetscInt_FMT ") has invalid local size %" PetscInt_FMT " != %" PetscInt_FMT, i, j, lc[j], l2);
867: lr[i] = l1;
868: lc[j] = l2;
870: /* check compatibility for local matrix reusage */
871: if (rnest && !rnest[i][j] != !snest[ij]) lreuse = PETSC_FALSE;
872: }
873: }
875: if (PetscDefined(USE_DEBUG)) {
876: /* Check compatibility of l2g maps for rows */
877: for (i = 0; i < nr; i++) {
878: rl2g = NULL;
879: for (j = 0; j < nc; j++) {
880: PetscInt n1, n2;
882: if (!nest[i][j]) continue;
883: if (istrans[i * nc + j]) {
884: Mat T;
886: PetscCall(MatTransposeGetMat(nest[i][j], &T));
887: PetscCall(MatISGetLocalToGlobalMapping(T, NULL, &cl2g));
888: } else {
889: PetscCall(MatISGetLocalToGlobalMapping(nest[i][j], &cl2g, NULL));
890: }
891: PetscCall(ISLocalToGlobalMappingGetSize(cl2g, &n1));
892: if (!n1) continue;
893: if (!rl2g) {
894: rl2g = cl2g;
895: } else {
896: const PetscInt *idxs1, *idxs2;
897: PetscBool same;
899: PetscCall(ISLocalToGlobalMappingGetSize(rl2g, &n2));
900: PetscCheck(n1 == n2, PETSC_COMM_SELF, PETSC_ERR_SUP, "Cannot convert from MATNEST to MATIS! Matrix block (%" PetscInt_FMT ",%" PetscInt_FMT ") has invalid row l2gmap size %" PetscInt_FMT " != %" PetscInt_FMT, i, j, n1, n2);
901: PetscCall(ISLocalToGlobalMappingGetIndices(cl2g, &idxs1));
902: PetscCall(ISLocalToGlobalMappingGetIndices(rl2g, &idxs2));
903: PetscCall(PetscArraycmp(idxs1, idxs2, n1, &same));
904: PetscCall(ISLocalToGlobalMappingRestoreIndices(cl2g, &idxs1));
905: PetscCall(ISLocalToGlobalMappingRestoreIndices(rl2g, &idxs2));
906: PetscCheck(same, PETSC_COMM_SELF, PETSC_ERR_SUP, "Cannot convert from MATNEST to MATIS! Matrix block (%" PetscInt_FMT ",%" PetscInt_FMT ") has invalid row l2gmap", i, j);
907: }
908: }
909: }
910: /* Check compatibility of l2g maps for columns */
911: for (i = 0; i < nc; i++) {
912: rl2g = NULL;
913: for (j = 0; j < nr; j++) {
914: PetscInt n1, n2;
916: if (!nest[j][i]) continue;
917: if (istrans[j * nc + i]) {
918: Mat T;
920: PetscCall(MatTransposeGetMat(nest[j][i], &T));
921: PetscCall(MatISGetLocalToGlobalMapping(T, &cl2g, NULL));
922: } else {
923: PetscCall(MatISGetLocalToGlobalMapping(nest[j][i], NULL, &cl2g));
924: }
925: PetscCall(ISLocalToGlobalMappingGetSize(cl2g, &n1));
926: if (!n1) continue;
927: if (!rl2g) {
928: rl2g = cl2g;
929: } else {
930: const PetscInt *idxs1, *idxs2;
931: PetscBool same;
933: PetscCall(ISLocalToGlobalMappingGetSize(rl2g, &n2));
934: PetscCheck(n1 == n2, PETSC_COMM_SELF, PETSC_ERR_SUP, "Cannot convert from MATNEST to MATIS! Matrix block (%" PetscInt_FMT ",%" PetscInt_FMT ") has invalid column l2gmap size %" PetscInt_FMT " != %" PetscInt_FMT, j, i, n1, n2);
935: PetscCall(ISLocalToGlobalMappingGetIndices(cl2g, &idxs1));
936: PetscCall(ISLocalToGlobalMappingGetIndices(rl2g, &idxs2));
937: PetscCall(PetscArraycmp(idxs1, idxs2, n1, &same));
938: PetscCall(ISLocalToGlobalMappingRestoreIndices(cl2g, &idxs1));
939: PetscCall(ISLocalToGlobalMappingRestoreIndices(rl2g, &idxs2));
940: PetscCheck(same, PETSC_COMM_SELF, PETSC_ERR_SUP, "Cannot convert from MATNEST to MATIS! Matrix block (%" PetscInt_FMT ",%" PetscInt_FMT ") has invalid column l2gmap", j, i);
941: }
942: }
943: }
944: }
946: B = NULL;
947: if (reuse != MAT_REUSE_MATRIX) {
948: PetscInt stl;
950: /* Create l2g map for the rows of the new matrix and index sets for the local MATNEST */
951: for (i = 0, stl = 0; i < nr; i++) stl += lr[i];
952: PetscCall(PetscMalloc1(stl, &l2gidxs));
953: for (i = 0, stl = 0; i < nr; i++) {
954: Mat usedmat;
955: Mat_IS *matis;
956: const PetscInt *idxs;
958: /* local IS for local NEST */
959: PetscCall(ISCreateStride(PETSC_COMM_SELF, lr[i], stl, 1, &islrow[i]));
961: /* l2gmap */
962: j = 0;
963: usedmat = nest[i][j];
964: while (!usedmat && j < nc - 1) usedmat = nest[i][++j];
965: PetscCheck(usedmat, comm, PETSC_ERR_SUP, "Cannot find valid row mat");
967: if (istrans[i * nc + j]) {
968: Mat T;
969: PetscCall(MatTransposeGetMat(usedmat, &T));
970: usedmat = T;
971: }
972: matis = (Mat_IS *)usedmat->data;
973: PetscCall(ISGetIndices(isrow[i], &idxs));
974: if (istrans[i * nc + j]) {
975: PetscCall(PetscSFBcastBegin(matis->csf, MPIU_INT, idxs, l2gidxs + stl, MPI_REPLACE));
976: PetscCall(PetscSFBcastEnd(matis->csf, MPIU_INT, idxs, l2gidxs + stl, MPI_REPLACE));
977: } else {
978: PetscCall(PetscSFBcastBegin(matis->sf, MPIU_INT, idxs, l2gidxs + stl, MPI_REPLACE));
979: PetscCall(PetscSFBcastEnd(matis->sf, MPIU_INT, idxs, l2gidxs + stl, MPI_REPLACE));
980: }
981: PetscCall(ISRestoreIndices(isrow[i], &idxs));
982: stl += lr[i];
983: }
984: PetscCall(ISLocalToGlobalMappingCreate(comm, 1, stl, l2gidxs, PETSC_OWN_POINTER, &rl2g));
986: /* Create l2g map for columns of the new matrix and index sets for the local MATNEST */
987: for (i = 0, stl = 0; i < nc; i++) stl += lc[i];
988: PetscCall(PetscMalloc1(stl, &l2gidxs));
989: for (i = 0, stl = 0; i < nc; i++) {
990: Mat usedmat;
991: Mat_IS *matis;
992: const PetscInt *idxs;
994: /* local IS for local NEST */
995: PetscCall(ISCreateStride(PETSC_COMM_SELF, lc[i], stl, 1, &islcol[i]));
997: /* l2gmap */
998: j = 0;
999: usedmat = nest[j][i];
1000: while (!usedmat && j < nr - 1) usedmat = nest[++j][i];
1001: PetscCheck(usedmat, comm, PETSC_ERR_SUP, "Cannot find valid column mat");
1002: if (istrans[j * nc + i]) {
1003: Mat T;
1004: PetscCall(MatTransposeGetMat(usedmat, &T));
1005: usedmat = T;
1006: }
1007: matis = (Mat_IS *)usedmat->data;
1008: PetscCall(ISGetIndices(iscol[i], &idxs));
1009: if (istrans[j * nc + i]) {
1010: PetscCall(PetscSFBcastBegin(matis->sf, MPIU_INT, idxs, l2gidxs + stl, MPI_REPLACE));
1011: PetscCall(PetscSFBcastEnd(matis->sf, MPIU_INT, idxs, l2gidxs + stl, MPI_REPLACE));
1012: } else {
1013: PetscCall(PetscSFBcastBegin(matis->csf, MPIU_INT, idxs, l2gidxs + stl, MPI_REPLACE));
1014: PetscCall(PetscSFBcastEnd(matis->csf, MPIU_INT, idxs, l2gidxs + stl, MPI_REPLACE));
1015: }
1016: PetscCall(ISRestoreIndices(iscol[i], &idxs));
1017: stl += lc[i];
1018: }
1019: PetscCall(ISLocalToGlobalMappingCreate(comm, 1, stl, l2gidxs, PETSC_OWN_POINTER, &cl2g));
1021: /* Create MATIS */
1022: PetscCall(MatCreate(comm, &B));
1023: PetscCall(MatSetSizes(B, A->rmap->n, A->cmap->n, A->rmap->N, A->cmap->N));
1024: PetscCall(MatGetBlockSizes(A, &rbs, &cbs));
1025: PetscCall(MatSetBlockSizes(B, rbs, cbs));
1026: PetscCall(MatSetType(B, MATIS));
1027: PetscCall(MatISSetLocalMatType(B, MATNEST));
1028: PetscCall(MatISSetAllowRepeated(B, PetscBool3ToBool(allow_repeated)));
1029: { /* hack : avoid setup of scatters */
1030: Mat_IS *matis = (Mat_IS *)B->data;
1031: matis->islocalref = PETSC_TRUE;
1032: }
1033: PetscCall(MatSetLocalToGlobalMapping(B, rl2g, cl2g));
1034: PetscCall(ISLocalToGlobalMappingDestroy(&rl2g));
1035: PetscCall(ISLocalToGlobalMappingDestroy(&cl2g));
1036: PetscCall(MatCreateNest(PETSC_COMM_SELF, nr, islrow, nc, islcol, snest, &lA));
1037: PetscCall(MatNestSetVecType(lA, VECNEST));
1038: for (i = 0; i < nr * nc; i++) {
1039: if (istrans[i]) PetscCall(MatDestroy(&snest[i]));
1040: }
1041: PetscCall(MatISSetLocalMat(B, lA));
1042: PetscCall(MatDestroy(&lA));
1043: { /* hack : setup of scatters done here */
1044: Mat_IS *matis = (Mat_IS *)B->data;
1046: matis->islocalref = PETSC_FALSE;
1047: PetscCall(MatISSetUpScatters_Private(B));
1048: }
1049: PetscCall(MatAssemblyBegin(B, MAT_FINAL_ASSEMBLY));
1050: PetscCall(MatAssemblyEnd(B, MAT_FINAL_ASSEMBLY));
1051: if (reuse == MAT_INPLACE_MATRIX) {
1052: PetscCall(MatHeaderReplace(A, &B));
1053: } else {
1054: *newmat = B;
1055: }
1056: } else {
1057: if (lreuse) {
1058: PetscCall(MatISGetLocalMat(*newmat, &lA));
1059: for (i = 0; i < nr; i++) {
1060: for (j = 0; j < nc; j++) {
1061: if (snest[i * nc + j]) {
1062: PetscCall(MatNestSetSubMat(lA, i, j, snest[i * nc + j]));
1063: if (istrans[i * nc + j]) PetscCall(MatDestroy(&snest[i * nc + j]));
1064: }
1065: }
1066: }
1067: } else {
1068: PetscInt stl;
1069: for (i = 0, stl = 0; i < nr; i++) {
1070: PetscCall(ISCreateStride(PETSC_COMM_SELF, lr[i], stl, 1, &islrow[i]));
1071: stl += lr[i];
1072: }
1073: for (i = 0, stl = 0; i < nc; i++) {
1074: PetscCall(ISCreateStride(PETSC_COMM_SELF, lc[i], stl, 1, &islcol[i]));
1075: stl += lc[i];
1076: }
1077: PetscCall(MatCreateNest(PETSC_COMM_SELF, nr, islrow, nc, islcol, snest, &lA));
1078: for (i = 0; i < nr * nc; i++) {
1079: if (istrans[i]) PetscCall(MatDestroy(&snest[i]));
1080: }
1081: PetscCall(MatISSetLocalMat(*newmat, lA));
1082: PetscCall(MatDestroy(&lA));
1083: }
1084: PetscCall(MatAssemblyBegin(*newmat, MAT_FINAL_ASSEMBLY));
1085: PetscCall(MatAssemblyEnd(*newmat, MAT_FINAL_ASSEMBLY));
1086: }
1088: /* Create local matrix in MATNEST format */
1089: convert = PETSC_FALSE;
1090: PetscCall(PetscOptionsGetBool(NULL, ((PetscObject)A)->prefix, "-mat_is_convert_local_nest", &convert, NULL));
1091: if (convert) {
1092: Mat M;
1093: MatISLocalFields lf;
1095: PetscCall(MatISGetLocalMat(*newmat, &lA));
1096: PetscCall(MatConvert(lA, MATAIJ, MAT_INITIAL_MATRIX, &M));
1097: PetscCall(MatISSetLocalMat(*newmat, M));
1098: PetscCall(MatDestroy(&M));
1100: /* attach local fields to the matrix */
1101: PetscCall(PetscNew(&lf));
1102: PetscCall(PetscMalloc2(nr, &lf->rf, nc, &lf->cf));
1103: for (i = 0; i < nr; i++) {
1104: PetscInt n, st;
1106: PetscCall(ISGetLocalSize(islrow[i], &n));
1107: PetscCall(ISStrideGetInfo(islrow[i], &st, NULL));
1108: PetscCall(ISCreateStride(comm, n, st, 1, &lf->rf[i]));
1109: }
1110: for (i = 0; i < nc; i++) {
1111: PetscInt n, st;
1113: PetscCall(ISGetLocalSize(islcol[i], &n));
1114: PetscCall(ISStrideGetInfo(islcol[i], &st, NULL));
1115: PetscCall(ISCreateStride(comm, n, st, 1, &lf->cf[i]));
1116: }
1117: lf->nr = nr;
1118: lf->nc = nc;
1119: PetscCall(PetscObjectContainerCompose((PetscObject)*newmat, "_convert_nest_lfields", lf, MatISContainerDestroyFields_Private));
1120: }
1122: /* Free workspace */
1123: for (i = 0; i < nr; i++) PetscCall(ISDestroy(&islrow[i]));
1124: for (i = 0; i < nc; i++) PetscCall(ISDestroy(&islcol[i]));
1125: PetscCall(PetscFree6(isrow, iscol, islrow, islcol, snest, istrans));
1126: PetscCall(PetscFree2(lr, lc));
1127: PetscFunctionReturn(PETSC_SUCCESS);
1128: }
1130: static PetscErrorCode MatDiagonalScale_IS(Mat A, Vec l, Vec r)
1131: {
1132: Mat_IS *matis = (Mat_IS *)A->data;
1133: Vec ll, rr;
1134: const PetscScalar *Y, *X;
1135: PetscScalar *x, *y;
1137: PetscFunctionBegin;
1138: if (l) {
1139: ll = matis->y;
1140: PetscCall(VecGetArrayRead(l, &Y));
1141: PetscCall(VecGetArray(ll, &y));
1142: PetscCall(PetscSFBcastBegin(matis->sf, MPIU_SCALAR, Y, y, MPI_REPLACE));
1143: } else {
1144: ll = NULL;
1145: }
1146: if (r) {
1147: rr = matis->x;
1148: PetscCall(VecGetArrayRead(r, &X));
1149: PetscCall(VecGetArray(rr, &x));
1150: PetscCall(PetscSFBcastBegin(matis->csf, MPIU_SCALAR, X, x, MPI_REPLACE));
1151: } else {
1152: rr = NULL;
1153: }
1154: if (ll) {
1155: PetscCall(PetscSFBcastEnd(matis->sf, MPIU_SCALAR, Y, y, MPI_REPLACE));
1156: PetscCall(VecRestoreArrayRead(l, &Y));
1157: PetscCall(VecRestoreArray(ll, &y));
1158: }
1159: if (rr) {
1160: PetscCall(PetscSFBcastEnd(matis->csf, MPIU_SCALAR, X, x, MPI_REPLACE));
1161: PetscCall(VecRestoreArrayRead(r, &X));
1162: PetscCall(VecRestoreArray(rr, &x));
1163: }
1164: PetscCall(MatDiagonalScale(matis->A, ll, rr));
1165: PetscFunctionReturn(PETSC_SUCCESS);
1166: }
1168: static PetscErrorCode MatGetInfo_IS(Mat A, MatInfoType flag, MatInfo *ginfo)
1169: {
1170: Mat_IS *matis = (Mat_IS *)A->data;
1171: MatInfo info;
1172: PetscLogDouble isend[6], irecv[6];
1173: PetscInt bs;
1175: PetscFunctionBegin;
1176: PetscCall(MatGetBlockSize(A, &bs));
1177: if (matis->A->ops->getinfo) {
1178: PetscCall(MatGetInfo(matis->A, MAT_LOCAL, &info));
1179: isend[0] = info.nz_used;
1180: isend[1] = info.nz_allocated;
1181: isend[2] = info.nz_unneeded;
1182: isend[3] = info.memory;
1183: isend[4] = info.mallocs;
1184: } else {
1185: isend[0] = 0.;
1186: isend[1] = 0.;
1187: isend[2] = 0.;
1188: isend[3] = 0.;
1189: isend[4] = 0.;
1190: }
1191: isend[5] = matis->A->num_ass;
1192: if (flag == MAT_LOCAL) {
1193: ginfo->nz_used = isend[0];
1194: ginfo->nz_allocated = isend[1];
1195: ginfo->nz_unneeded = isend[2];
1196: ginfo->memory = isend[3];
1197: ginfo->mallocs = isend[4];
1198: ginfo->assemblies = isend[5];
1199: } else if (flag == MAT_GLOBAL_MAX) {
1200: PetscCallMPI(MPIU_Allreduce(isend, irecv, 6, MPIU_PETSCLOGDOUBLE, MPI_MAX, PetscObjectComm((PetscObject)A)));
1202: ginfo->nz_used = irecv[0];
1203: ginfo->nz_allocated = irecv[1];
1204: ginfo->nz_unneeded = irecv[2];
1205: ginfo->memory = irecv[3];
1206: ginfo->mallocs = irecv[4];
1207: ginfo->assemblies = irecv[5];
1208: } else if (flag == MAT_GLOBAL_SUM) {
1209: PetscCallMPI(MPIU_Allreduce(isend, irecv, 5, MPIU_PETSCLOGDOUBLE, MPI_SUM, PetscObjectComm((PetscObject)A)));
1211: ginfo->nz_used = irecv[0];
1212: ginfo->nz_allocated = irecv[1];
1213: ginfo->nz_unneeded = irecv[2];
1214: ginfo->memory = irecv[3];
1215: ginfo->mallocs = irecv[4];
1216: ginfo->assemblies = A->num_ass;
1217: }
1218: ginfo->block_size = bs;
1219: ginfo->fill_ratio_given = 0;
1220: ginfo->fill_ratio_needed = 0;
1221: ginfo->factor_mallocs = 0;
1222: PetscFunctionReturn(PETSC_SUCCESS);
1223: }
1225: static PetscErrorCode MatTranspose_IS(Mat A, MatReuse reuse, Mat *B)
1226: {
1227: Mat C, lC, lA;
1229: PetscFunctionBegin;
1230: if (reuse == MAT_REUSE_MATRIX) PetscCall(MatTransposeCheckNonzeroState_Private(A, *B));
1231: if (reuse == MAT_INITIAL_MATRIX || reuse == MAT_INPLACE_MATRIX) {
1232: ISLocalToGlobalMapping rl2g, cl2g;
1233: PetscBool allow_repeated;
1235: PetscCall(MatCreate(PetscObjectComm((PetscObject)A), &C));
1236: PetscCall(MatSetSizes(C, A->cmap->n, A->rmap->n, A->cmap->N, A->rmap->N));
1237: PetscCall(MatSetBlockSizes(C, PetscAbs(A->cmap->bs), PetscAbs(A->rmap->bs)));
1238: PetscCall(MatSetType(C, MATIS));
1239: PetscCall(MatISGetAllowRepeated(A, &allow_repeated));
1240: PetscCall(MatISSetAllowRepeated(C, allow_repeated));
1241: PetscCall(MatGetLocalToGlobalMapping(A, &rl2g, &cl2g));
1242: PetscCall(MatSetLocalToGlobalMapping(C, cl2g, rl2g));
1243: } else C = *B;
1245: /* perform local transposition */
1246: PetscCall(MatISGetLocalMat(A, &lA));
1247: PetscCall(MatTranspose(lA, MAT_INITIAL_MATRIX, &lC));
1248: PetscCall(MatSetLocalToGlobalMapping(lC, lA->cmap->mapping, lA->rmap->mapping));
1249: PetscCall(MatISSetLocalMat(C, lC));
1250: PetscCall(MatDestroy(&lC));
1252: if (reuse == MAT_INITIAL_MATRIX || reuse == MAT_REUSE_MATRIX) {
1253: *B = C;
1254: } else {
1255: PetscCall(MatHeaderMerge(A, &C));
1256: }
1257: PetscCall(MatAssemblyBegin(*B, MAT_FINAL_ASSEMBLY));
1258: PetscCall(MatAssemblyEnd(*B, MAT_FINAL_ASSEMBLY));
1259: PetscFunctionReturn(PETSC_SUCCESS);
1260: }
1262: static PetscErrorCode MatDiagonalSet_IS(Mat A, Vec D, InsertMode insmode)
1263: {
1264: Mat_IS *is = (Mat_IS *)A->data;
1266: PetscFunctionBegin;
1267: PetscCheck(!is->allow_repeated || insmode == ADD_VALUES, PetscObjectComm((PetscObject)A), PETSC_ERR_SUP, "INSERT_VALUES with repeated entries not supported");
1268: if (D) { /* MatShift_IS pass D = NULL */
1269: PetscCall(VecScatterBegin(is->rctx, D, is->y, INSERT_VALUES, SCATTER_FORWARD));
1270: PetscCall(VecScatterEnd(is->rctx, D, is->y, INSERT_VALUES, SCATTER_FORWARD));
1271: }
1272: PetscCall(VecPointwiseDivide(is->y, is->y, is->counter));
1273: PetscCall(MatDiagonalSet(is->A, is->y, insmode));
1274: PetscFunctionReturn(PETSC_SUCCESS);
1275: }
1277: static PetscErrorCode MatShift_IS(Mat A, PetscScalar a)
1278: {
1279: Mat_IS *is = (Mat_IS *)A->data;
1281: PetscFunctionBegin;
1282: PetscCall(VecSet(is->y, a));
1283: PetscCall(MatDiagonalSet_IS(A, NULL, ADD_VALUES));
1284: PetscFunctionReturn(PETSC_SUCCESS);
1285: }
1287: static PetscErrorCode MatSetValuesLocal_SubMat_IS(Mat A, PetscInt m, const PetscInt *rows, PetscInt n, const PetscInt *cols, const PetscScalar *values, InsertMode addv)
1288: {
1289: PetscInt rows_l[MATIS_MAX_ENTRIES_INSERTION], cols_l[MATIS_MAX_ENTRIES_INSERTION];
1291: PetscFunctionBegin;
1292: PetscCheck(m <= MATIS_MAX_ENTRIES_INSERTION && n <= MATIS_MAX_ENTRIES_INSERTION, PETSC_COMM_SELF, PETSC_ERR_SUP, "Number of row/column indices must be <= %d: they are %" PetscInt_FMT " %" PetscInt_FMT, MATIS_MAX_ENTRIES_INSERTION, m, n);
1293: PetscCall(ISLocalToGlobalMappingApply(A->rmap->mapping, m, rows, rows_l));
1294: PetscCall(ISLocalToGlobalMappingApply(A->cmap->mapping, n, cols, cols_l));
1295: PetscCall(MatSetValuesLocal_IS(A, m, rows_l, n, cols_l, values, addv));
1296: PetscFunctionReturn(PETSC_SUCCESS);
1297: }
1299: static PetscErrorCode MatSetValuesBlockedLocal_SubMat_IS(Mat A, PetscInt m, const PetscInt *rows, PetscInt n, const PetscInt *cols, const PetscScalar *values, InsertMode addv)
1300: {
1301: PetscInt rows_l[MATIS_MAX_ENTRIES_INSERTION], cols_l[MATIS_MAX_ENTRIES_INSERTION];
1303: PetscFunctionBegin;
1304: PetscCheck(m <= MATIS_MAX_ENTRIES_INSERTION && n <= MATIS_MAX_ENTRIES_INSERTION, PETSC_COMM_SELF, PETSC_ERR_SUP, "Number of row/column block indices must be <= %d: they are %" PetscInt_FMT " %" PetscInt_FMT, MATIS_MAX_ENTRIES_INSERTION, m, n);
1305: PetscCall(ISLocalToGlobalMappingApplyBlock(A->rmap->mapping, m, rows, rows_l));
1306: PetscCall(ISLocalToGlobalMappingApplyBlock(A->cmap->mapping, n, cols, cols_l));
1307: PetscCall(MatSetValuesBlockedLocal_IS(A, m, rows_l, n, cols_l, values, addv));
1308: PetscFunctionReturn(PETSC_SUCCESS);
1309: }
1311: static PetscErrorCode MatCreateSubMatrix_IS(Mat mat, IS irow, IS icol, MatReuse scall, Mat *newmat)
1312: {
1313: Mat locmat, newlocmat;
1314: Mat_IS *newmatis;
1315: const PetscInt *idxs;
1316: PetscInt i, m, n;
1318: PetscFunctionBegin;
1319: if (scall == MAT_REUSE_MATRIX) {
1320: PetscBool ismatis;
1322: PetscCall(PetscObjectTypeCompare((PetscObject)*newmat, MATIS, &ismatis));
1323: PetscCheck(ismatis, PetscObjectComm((PetscObject)*newmat), PETSC_ERR_ARG_WRONG, "Cannot reuse matrix! Not of MATIS type");
1324: newmatis = (Mat_IS *)(*newmat)->data;
1325: PetscCheck(newmatis->getsub_ris, PetscObjectComm((PetscObject)*newmat), PETSC_ERR_ARG_WRONG, "Cannot reuse matrix! Misses local row IS");
1326: PetscCheck(newmatis->getsub_cis, PetscObjectComm((PetscObject)*newmat), PETSC_ERR_ARG_WRONG, "Cannot reuse matrix! Misses local col IS");
1327: }
1328: /* irow and icol may not have duplicate entries */
1329: if (PetscDefined(USE_DEBUG)) {
1330: Vec rtest, ltest;
1331: const PetscScalar *array;
1333: PetscCall(MatCreateVecs(mat, <est, &rtest));
1334: PetscCall(ISGetLocalSize(irow, &n));
1335: PetscCall(ISGetIndices(irow, &idxs));
1336: for (i = 0; i < n; i++) PetscCall(VecSetValue(rtest, idxs[i], 1.0, ADD_VALUES));
1337: PetscCall(VecAssemblyBegin(rtest));
1338: PetscCall(VecAssemblyEnd(rtest));
1339: PetscCall(VecGetLocalSize(rtest, &n));
1340: PetscCall(VecGetOwnershipRange(rtest, &m, NULL));
1341: PetscCall(VecGetArrayRead(rtest, &array));
1342: for (i = 0; i < n; i++) PetscCheck(array[i] == 0. || array[i] == 1., PETSC_COMM_SELF, PETSC_ERR_SUP, "Index %" PetscInt_FMT " counted %" PetscInt_FMT " times! Irow may not have duplicate entries", i + m, (PetscInt)PetscRealPart(array[i]));
1343: PetscCall(VecRestoreArrayRead(rtest, &array));
1344: PetscCall(ISRestoreIndices(irow, &idxs));
1345: PetscCall(ISGetLocalSize(icol, &n));
1346: PetscCall(ISGetIndices(icol, &idxs));
1347: for (i = 0; i < n; i++) PetscCall(VecSetValue(ltest, idxs[i], 1.0, ADD_VALUES));
1348: PetscCall(VecAssemblyBegin(ltest));
1349: PetscCall(VecAssemblyEnd(ltest));
1350: PetscCall(VecGetLocalSize(ltest, &n));
1351: PetscCall(VecGetOwnershipRange(ltest, &m, NULL));
1352: PetscCall(VecGetArrayRead(ltest, &array));
1353: for (i = 0; i < n; i++) PetscCheck(array[i] == 0. || array[i] == 1., PETSC_COMM_SELF, PETSC_ERR_SUP, "Index %" PetscInt_FMT " counted %" PetscInt_FMT " times! Icol may not have duplicate entries", i + m, (PetscInt)PetscRealPart(array[i]));
1354: PetscCall(VecRestoreArrayRead(ltest, &array));
1355: PetscCall(ISRestoreIndices(icol, &idxs));
1356: PetscCall(VecDestroy(&rtest));
1357: PetscCall(VecDestroy(<est));
1358: }
1359: if (scall == MAT_INITIAL_MATRIX) {
1360: Mat_IS *matis = (Mat_IS *)mat->data;
1361: ISLocalToGlobalMapping rl2g;
1362: IS is;
1363: PetscInt *lidxs, *lgidxs, *newgidxs;
1364: PetscInt ll, newloc, irbs, icbs, arbs, acbs, rbs, cbs;
1365: PetscBool cong;
1366: MPI_Comm comm;
1368: PetscCall(PetscObjectGetComm((PetscObject)mat, &comm));
1369: PetscCall(MatGetBlockSizes(mat, &arbs, &acbs));
1370: PetscCall(ISGetBlockSize(irow, &irbs));
1371: PetscCall(ISGetBlockSize(icol, &icbs));
1372: rbs = arbs == irbs ? irbs : 1;
1373: cbs = acbs == icbs ? icbs : 1;
1374: PetscCall(ISGetLocalSize(irow, &m));
1375: PetscCall(ISGetLocalSize(icol, &n));
1376: PetscCall(MatCreate(comm, newmat));
1377: PetscCall(MatSetType(*newmat, MATIS));
1378: PetscCall(MatISSetAllowRepeated(*newmat, matis->allow_repeated));
1379: PetscCall(MatSetSizes(*newmat, m, n, PETSC_DECIDE, PETSC_DECIDE));
1380: PetscCall(MatSetBlockSizes(*newmat, rbs, cbs));
1381: /* communicate irow to their owners in the layout */
1382: PetscCall(ISGetIndices(irow, &idxs));
1383: PetscCall(PetscLayoutMapLocal(mat->rmap, m, idxs, &ll, &lidxs, &lgidxs));
1384: PetscCall(ISRestoreIndices(irow, &idxs));
1385: PetscCall(PetscArrayzero(matis->sf_rootdata, matis->sf->nroots));
1386: for (i = 0; i < ll; i++) matis->sf_rootdata[lidxs[i]] = lgidxs[i] + 1;
1387: PetscCall(PetscFree(lidxs));
1388: PetscCall(PetscFree(lgidxs));
1389: PetscCall(PetscSFBcastBegin(matis->sf, MPIU_INT, matis->sf_rootdata, matis->sf_leafdata, MPI_REPLACE));
1390: PetscCall(PetscSFBcastEnd(matis->sf, MPIU_INT, matis->sf_rootdata, matis->sf_leafdata, MPI_REPLACE));
1391: for (i = 0, newloc = 0; i < matis->sf->nleaves; i++)
1392: if (matis->sf_leafdata[i]) newloc++;
1393: PetscCall(PetscMalloc1(newloc, &newgidxs));
1394: PetscCall(PetscMalloc1(newloc, &lidxs));
1395: for (i = 0, newloc = 0; i < matis->sf->nleaves; i++)
1396: if (matis->sf_leafdata[i]) {
1397: lidxs[newloc] = i;
1398: newgidxs[newloc++] = matis->sf_leafdata[i] - 1;
1399: }
1400: PetscCall(ISCreateGeneral(comm, newloc, newgidxs, PETSC_OWN_POINTER, &is));
1401: PetscCall(ISLocalToGlobalMappingCreateIS(is, &rl2g));
1402: PetscCall(ISLocalToGlobalMappingSetBlockSize(rl2g, rbs));
1403: PetscCall(ISDestroy(&is));
1404: /* local is to extract local submatrix */
1405: newmatis = (Mat_IS *)(*newmat)->data;
1406: PetscCall(ISCreateGeneral(comm, newloc, lidxs, PETSC_OWN_POINTER, &newmatis->getsub_ris));
1407: PetscCall(MatHasCongruentLayouts(mat, &cong));
1408: if (cong && irow == icol && matis->csf == matis->sf) {
1409: PetscCall(MatSetLocalToGlobalMapping(*newmat, rl2g, rl2g));
1410: PetscCall(PetscObjectReference((PetscObject)newmatis->getsub_ris));
1411: newmatis->getsub_cis = newmatis->getsub_ris;
1412: } else {
1413: ISLocalToGlobalMapping cl2g;
1415: /* communicate icol to their owners in the layout */
1416: PetscCall(ISGetIndices(icol, &idxs));
1417: PetscCall(PetscLayoutMapLocal(mat->cmap, n, idxs, &ll, &lidxs, &lgidxs));
1418: PetscCall(ISRestoreIndices(icol, &idxs));
1419: PetscCall(PetscArrayzero(matis->csf_rootdata, matis->csf->nroots));
1420: for (i = 0; i < ll; i++) matis->csf_rootdata[lidxs[i]] = lgidxs[i] + 1;
1421: PetscCall(PetscFree(lidxs));
1422: PetscCall(PetscFree(lgidxs));
1423: PetscCall(PetscSFBcastBegin(matis->csf, MPIU_INT, matis->csf_rootdata, matis->csf_leafdata, MPI_REPLACE));
1424: PetscCall(PetscSFBcastEnd(matis->csf, MPIU_INT, matis->csf_rootdata, matis->csf_leafdata, MPI_REPLACE));
1425: for (i = 0, newloc = 0; i < matis->csf->nleaves; i++)
1426: if (matis->csf_leafdata[i]) newloc++;
1427: PetscCall(PetscMalloc1(newloc, &newgidxs));
1428: PetscCall(PetscMalloc1(newloc, &lidxs));
1429: for (i = 0, newloc = 0; i < matis->csf->nleaves; i++)
1430: if (matis->csf_leafdata[i]) {
1431: lidxs[newloc] = i;
1432: newgidxs[newloc++] = matis->csf_leafdata[i] - 1;
1433: }
1434: PetscCall(ISCreateGeneral(comm, newloc, newgidxs, PETSC_OWN_POINTER, &is));
1435: PetscCall(ISLocalToGlobalMappingCreateIS(is, &cl2g));
1436: PetscCall(ISLocalToGlobalMappingSetBlockSize(cl2g, cbs));
1437: PetscCall(ISDestroy(&is));
1438: /* local is to extract local submatrix */
1439: PetscCall(ISCreateGeneral(comm, newloc, lidxs, PETSC_OWN_POINTER, &newmatis->getsub_cis));
1440: PetscCall(MatSetLocalToGlobalMapping(*newmat, rl2g, cl2g));
1441: PetscCall(ISLocalToGlobalMappingDestroy(&cl2g));
1442: }
1443: PetscCall(ISLocalToGlobalMappingDestroy(&rl2g));
1444: } else {
1445: PetscCall(MatISGetLocalMat(*newmat, &newlocmat));
1446: }
1447: PetscCall(MatISGetLocalMat(mat, &locmat));
1448: newmatis = (Mat_IS *)(*newmat)->data;
1449: PetscCall(MatCreateSubMatrix(locmat, newmatis->getsub_ris, newmatis->getsub_cis, scall, &newlocmat));
1450: if (scall == MAT_INITIAL_MATRIX) {
1451: PetscCall(MatISSetLocalMat(*newmat, newlocmat));
1452: PetscCall(MatDestroy(&newlocmat));
1453: }
1454: PetscCall(MatAssemblyBegin(*newmat, MAT_FINAL_ASSEMBLY));
1455: PetscCall(MatAssemblyEnd(*newmat, MAT_FINAL_ASSEMBLY));
1456: PetscFunctionReturn(PETSC_SUCCESS);
1457: }
1459: static PetscErrorCode MatCopy_IS(Mat A, Mat B, MatStructure str)
1460: {
1461: Mat_IS *a = (Mat_IS *)A->data, *b;
1462: PetscBool ismatis;
1464: PetscFunctionBegin;
1465: PetscCall(PetscObjectTypeCompare((PetscObject)B, MATIS, &ismatis));
1466: PetscCheck(ismatis, PetscObjectComm((PetscObject)B), PETSC_ERR_SUP, "Need to be implemented");
1467: b = (Mat_IS *)B->data;
1468: PetscCall(MatCopy(a->A, b->A, str));
1469: PetscCall(PetscObjectStateIncrease((PetscObject)B));
1470: PetscFunctionReturn(PETSC_SUCCESS);
1471: }
1473: static PetscErrorCode MatMissingDiagonal_IS(Mat A, PetscBool *missing, PetscInt *d)
1474: {
1475: Vec v;
1476: const PetscScalar *array;
1477: PetscInt i, n;
1479: PetscFunctionBegin;
1480: *missing = PETSC_FALSE;
1481: PetscCall(MatCreateVecs(A, NULL, &v));
1482: PetscCall(MatGetDiagonal(A, v));
1483: PetscCall(VecGetLocalSize(v, &n));
1484: PetscCall(VecGetArrayRead(v, &array));
1485: for (i = 0; i < n; i++)
1486: if (array[i] == 0.) break;
1487: PetscCall(VecRestoreArrayRead(v, &array));
1488: PetscCall(VecDestroy(&v));
1489: if (i != n) *missing = PETSC_TRUE;
1490: if (d) {
1491: *d = -1;
1492: if (*missing) {
1493: PetscInt rstart;
1494: PetscCall(MatGetOwnershipRange(A, &rstart, NULL));
1495: *d = i + rstart;
1496: }
1497: }
1498: PetscFunctionReturn(PETSC_SUCCESS);
1499: }
1501: static PetscErrorCode MatISSetUpSF_IS(Mat B)
1502: {
1503: Mat_IS *matis = (Mat_IS *)B->data;
1504: const PetscInt *gidxs;
1505: PetscInt nleaves;
1507: PetscFunctionBegin;
1508: if (matis->sf) PetscFunctionReturn(PETSC_SUCCESS);
1509: PetscCall(PetscSFCreate(PetscObjectComm((PetscObject)B), &matis->sf));
1510: PetscCall(ISLocalToGlobalMappingGetIndices(matis->rmapping, &gidxs));
1511: PetscCall(ISLocalToGlobalMappingGetSize(matis->rmapping, &nleaves));
1512: PetscCall(PetscSFSetGraphLayout(matis->sf, B->rmap, nleaves, NULL, PETSC_OWN_POINTER, gidxs));
1513: PetscCall(ISLocalToGlobalMappingRestoreIndices(matis->rmapping, &gidxs));
1514: PetscCall(PetscMalloc2(matis->sf->nroots, &matis->sf_rootdata, matis->sf->nleaves, &matis->sf_leafdata));
1515: if (matis->rmapping != matis->cmapping) { /* setup SF for columns */
1516: PetscCall(ISLocalToGlobalMappingGetSize(matis->cmapping, &nleaves));
1517: PetscCall(PetscSFCreate(PetscObjectComm((PetscObject)B), &matis->csf));
1518: PetscCall(ISLocalToGlobalMappingGetIndices(matis->cmapping, &gidxs));
1519: PetscCall(PetscSFSetGraphLayout(matis->csf, B->cmap, nleaves, NULL, PETSC_OWN_POINTER, gidxs));
1520: PetscCall(ISLocalToGlobalMappingRestoreIndices(matis->cmapping, &gidxs));
1521: PetscCall(PetscMalloc2(matis->csf->nroots, &matis->csf_rootdata, matis->csf->nleaves, &matis->csf_leafdata));
1522: } else {
1523: matis->csf = matis->sf;
1524: matis->csf_leafdata = matis->sf_leafdata;
1525: matis->csf_rootdata = matis->sf_rootdata;
1526: }
1527: PetscFunctionReturn(PETSC_SUCCESS);
1528: }
1530: /*@
1531: MatISGetAllowRepeated - Get the flag to allow repeated entries in the local to global map
1533: Not Collective
1535: Input Parameter:
1536: . A - the matrix
1538: Output Parameter:
1539: . flg - the boolean flag
1541: Level: intermediate
1543: .seealso: [](ch_matrices), `Mat`, `MatCreate()`, `MatCreateIS()`, `MatSetLocalToGlobalMapping()`, `MatISSetAllowRepeated()`
1544: @*/
1545: PetscErrorCode MatISGetAllowRepeated(Mat A, PetscBool *flg)
1546: {
1547: PetscBool ismatis;
1549: PetscFunctionBegin;
1551: PetscAssertPointer(flg, 2);
1552: PetscCall(PetscObjectTypeCompare((PetscObject)A, MATIS, &ismatis));
1553: PetscCheck(ismatis, PetscObjectComm((PetscObject)A), PETSC_ERR_SUP, "Not for matrix type %s", ((PetscObject)A)->type_name);
1554: *flg = ((Mat_IS *)A->data)->allow_repeated;
1555: PetscFunctionReturn(PETSC_SUCCESS);
1556: }
1558: /*@
1559: MatISSetAllowRepeated - Set the flag to allow repeated entries in the local to global map
1561: Logically Collective
1563: Input Parameters:
1564: + A - the matrix
1565: - flg - the boolean flag
1567: Level: intermediate
1569: Notes:
1570: The default value is `PETSC_FALSE`.
1571: When called AFTER calling `MatSetLocalToGlobalMapping()` it will recreate the local matrices
1572: if `flg` is different from the previously set value.
1573: Specifically, when `flg` is true it will just recreate the local matrices, while if
1574: `flg` is false will assemble the local matrices summing up repeated entries.
1576: .seealso: [](ch_matrices), `Mat`, `MatCreate()`, `MatCreateIS()`, `MatSetLocalToGlobalMapping()`, `MatISGetAllowRepeated()`
1577: @*/
1578: PetscErrorCode MatISSetAllowRepeated(Mat A, PetscBool flg)
1579: {
1580: PetscFunctionBegin;
1584: PetscTryMethod(A, "MatISSetAllowRepeated_C", (Mat, PetscBool), (A, flg));
1585: PetscFunctionReturn(PETSC_SUCCESS);
1586: }
1588: static PetscErrorCode MatISSetAllowRepeated_IS(Mat A, PetscBool flg)
1589: {
1590: Mat_IS *matis = (Mat_IS *)A->data;
1591: Mat lA = NULL;
1592: ISLocalToGlobalMapping lrmap, lcmap;
1594: PetscFunctionBegin;
1595: if (flg == matis->allow_repeated) PetscFunctionReturn(PETSC_SUCCESS);
1596: if (!matis->A) { /* matrix has not been preallocated yet */
1597: matis->allow_repeated = flg;
1598: PetscFunctionReturn(PETSC_SUCCESS);
1599: }
1600: PetscCheck(!matis->islocalref, PetscObjectComm((PetscObject)A), PETSC_ERR_SUP, "Not implemented for local references");
1601: if (matis->allow_repeated) { /* we will assemble the old local matrix if needed */
1602: lA = matis->A;
1603: PetscCall(PetscObjectReference((PetscObject)lA));
1604: }
1605: /* In case flg is True, we only recreate the local matrix */
1606: matis->allow_repeated = flg;
1607: PetscCall(MatSetLocalToGlobalMapping(A, A->rmap->mapping, A->cmap->mapping));
1608: if (lA) { /* assemble previous local matrix if needed */
1609: Mat nA = matis->A;
1611: PetscCall(MatGetLocalToGlobalMapping(nA, &lrmap, &lcmap));
1612: if (!lrmap && !lcmap) {
1613: PetscCall(MatISSetLocalMat(A, lA));
1614: } else {
1615: Mat P = NULL, R = NULL;
1616: MatProductType ptype;
1618: if (lrmap == lcmap) {
1619: ptype = MATPRODUCT_PtAP;
1620: PetscCall(MatCreateFromISLocalToGlobalMapping(lcmap, nA, PETSC_TRUE, PETSC_FALSE, NULL, &P));
1621: PetscCall(MatProductCreate(lA, P, NULL, &nA));
1622: } else {
1623: if (lcmap) PetscCall(MatCreateFromISLocalToGlobalMapping(lcmap, nA, PETSC_TRUE, PETSC_FALSE, NULL, &P));
1624: if (lrmap) PetscCall(MatCreateFromISLocalToGlobalMapping(lrmap, nA, PETSC_FALSE, PETSC_TRUE, NULL, &R));
1625: if (R && P) {
1626: ptype = MATPRODUCT_ABC;
1627: PetscCall(MatProductCreate(R, lA, P, &nA));
1628: } else if (R) {
1629: ptype = MATPRODUCT_AB;
1630: PetscCall(MatProductCreate(R, lA, NULL, &nA));
1631: } else {
1632: ptype = MATPRODUCT_AB;
1633: PetscCall(MatProductCreate(lA, P, NULL, &nA));
1634: }
1635: }
1636: PetscCall(MatProductSetType(nA, ptype));
1637: PetscCall(MatProductSetFromOptions(nA));
1638: PetscCall(MatProductSymbolic(nA));
1639: PetscCall(MatProductNumeric(nA));
1640: PetscCall(MatProductClear(nA));
1641: PetscCall(MatConvert(nA, matis->lmattype, MAT_INPLACE_MATRIX, &nA));
1642: PetscCall(MatISSetLocalMat(A, nA));
1643: PetscCall(MatDestroy(&nA));
1644: PetscCall(MatDestroy(&P));
1645: PetscCall(MatDestroy(&R));
1646: }
1647: }
1648: PetscCall(MatDestroy(&lA));
1649: PetscFunctionReturn(PETSC_SUCCESS);
1650: }
1652: /*@
1653: MatISStoreL2L - Store local-to-local operators during the Galerkin process of computing `MatPtAP()`
1655: Logically Collective
1657: Input Parameters:
1658: + A - the matrix
1659: - store - the boolean flag
1661: Level: advanced
1663: .seealso: [](ch_matrices), `Mat`, `MatCreate()`, `MatCreateIS()`, `MatISSetPreallocation()`, `MatPtAP()`
1664: @*/
1665: PetscErrorCode MatISStoreL2L(Mat A, PetscBool store)
1666: {
1667: PetscFunctionBegin;
1671: PetscTryMethod(A, "MatISStoreL2L_C", (Mat, PetscBool), (A, store));
1672: PetscFunctionReturn(PETSC_SUCCESS);
1673: }
1675: static PetscErrorCode MatISStoreL2L_IS(Mat A, PetscBool store)
1676: {
1677: Mat_IS *matis = (Mat_IS *)A->data;
1679: PetscFunctionBegin;
1680: matis->storel2l = store;
1681: if (!store) PetscCall(PetscObjectCompose((PetscObject)A, "_MatIS_PtAP_l2l", NULL));
1682: PetscFunctionReturn(PETSC_SUCCESS);
1683: }
1685: /*@
1686: MatISFixLocalEmpty - Compress out zero local rows from the local matrices
1688: Logically Collective
1690: Input Parameters:
1691: + A - the matrix
1692: - fix - the boolean flag
1694: Level: advanced
1696: Note:
1697: When `fix` is `PETSC_TRUE`, new local matrices and l2g maps are generated during the final assembly process.
1699: .seealso: [](ch_matrices), `Mat`, `MATIS`, `MatCreate()`, `MatCreateIS()`, `MatISSetPreallocation()`, `MatAssemblyEnd()`, `MAT_FINAL_ASSEMBLY`
1700: @*/
1701: PetscErrorCode MatISFixLocalEmpty(Mat A, PetscBool fix)
1702: {
1703: PetscFunctionBegin;
1707: PetscTryMethod(A, "MatISFixLocalEmpty_C", (Mat, PetscBool), (A, fix));
1708: PetscFunctionReturn(PETSC_SUCCESS);
1709: }
1711: static PetscErrorCode MatISFixLocalEmpty_IS(Mat A, PetscBool fix)
1712: {
1713: Mat_IS *matis = (Mat_IS *)A->data;
1715: PetscFunctionBegin;
1716: matis->locempty = fix;
1717: PetscFunctionReturn(PETSC_SUCCESS);
1718: }
1720: /*@
1721: MatISSetPreallocation - Preallocates memory for a `MATIS` parallel matrix.
1723: Collective
1725: Input Parameters:
1726: + B - the matrix
1727: . d_nz - number of nonzeros per row in DIAGONAL portion of local submatrix
1728: (same value is used for all local rows)
1729: . d_nnz - array containing the number of nonzeros in the various rows of the
1730: DIAGONAL portion of the local submatrix (possibly different for each row)
1731: or `NULL`, if `d_nz` is used to specify the nonzero structure.
1732: The size of this array is equal to the number of local rows, i.e `m`.
1733: For matrices that will be factored, you must leave room for (and set)
1734: the diagonal entry even if it is zero.
1735: . o_nz - number of nonzeros per row in the OFF-DIAGONAL portion of local
1736: submatrix (same value is used for all local rows).
1737: - o_nnz - array containing the number of nonzeros in the various rows of the
1738: OFF-DIAGONAL portion of the local submatrix (possibly different for
1739: each row) or `NULL`, if `o_nz` is used to specify the nonzero
1740: structure. The size of this array is equal to the number
1741: of local rows, i.e `m`.
1743: If the *_nnz parameter is given then the *_nz parameter is ignored
1745: Level: intermediate
1747: Note:
1748: This function has the same interface as the `MATMPIAIJ` preallocation routine in order to simplify the transition
1749: from the asssembled format to the unassembled one. It overestimates the preallocation of `MATIS` local
1750: matrices; for exact preallocation, the user should set the preallocation directly on local matrix objects.
1752: .seealso: [](ch_matrices), `Mat`, `MatCreate()`, `MatCreateIS()`, `MatMPIAIJSetPreallocation()`, `MatISGetLocalMat()`, `MATIS`
1753: @*/
1754: PetscErrorCode MatISSetPreallocation(Mat B, PetscInt d_nz, const PetscInt d_nnz[], PetscInt o_nz, const PetscInt o_nnz[])
1755: {
1756: PetscFunctionBegin;
1759: PetscTryMethod(B, "MatISSetPreallocation_C", (Mat, PetscInt, const PetscInt[], PetscInt, const PetscInt[]), (B, d_nz, d_nnz, o_nz, o_nnz));
1760: PetscFunctionReturn(PETSC_SUCCESS);
1761: }
1763: /* this is used by DMDA */
1764: PETSC_EXTERN PetscErrorCode MatISSetPreallocation_IS(Mat B, PetscInt d_nz, const PetscInt d_nnz[], PetscInt o_nz, const PetscInt o_nnz[])
1765: {
1766: Mat_IS *matis = (Mat_IS *)B->data;
1767: PetscInt bs, i, nlocalcols;
1769: PetscFunctionBegin;
1770: PetscCall(MatSetUp(B));
1771: if (!d_nnz)
1772: for (i = 0; i < matis->sf->nroots; i++) matis->sf_rootdata[i] = d_nz;
1773: else
1774: for (i = 0; i < matis->sf->nroots; i++) matis->sf_rootdata[i] = d_nnz[i];
1776: if (!o_nnz)
1777: for (i = 0; i < matis->sf->nroots; i++) matis->sf_rootdata[i] += o_nz;
1778: else
1779: for (i = 0; i < matis->sf->nroots; i++) matis->sf_rootdata[i] += o_nnz[i];
1781: PetscCall(PetscSFBcastBegin(matis->sf, MPIU_INT, matis->sf_rootdata, matis->sf_leafdata, MPI_REPLACE));
1782: PetscCall(MatGetSize(matis->A, NULL, &nlocalcols));
1783: PetscCall(MatGetBlockSize(matis->A, &bs));
1784: PetscCall(PetscSFBcastEnd(matis->sf, MPIU_INT, matis->sf_rootdata, matis->sf_leafdata, MPI_REPLACE));
1786: for (i = 0; i < matis->sf->nleaves; i++) matis->sf_leafdata[i] = PetscMin(matis->sf_leafdata[i], nlocalcols);
1787: PetscCall(MatSeqAIJSetPreallocation(matis->A, 0, matis->sf_leafdata));
1788: #if defined(PETSC_HAVE_HYPRE)
1789: PetscCall(MatHYPRESetPreallocation(matis->A, 0, matis->sf_leafdata, 0, NULL));
1790: #endif
1792: for (i = 0; i < matis->sf->nleaves / bs; i++) {
1793: PetscInt b;
1795: matis->sf_leafdata[i] = matis->sf_leafdata[i * bs] / bs;
1796: for (b = 1; b < bs; b++) matis->sf_leafdata[i] = PetscMax(matis->sf_leafdata[i], matis->sf_leafdata[i * bs + b] / bs);
1797: }
1798: PetscCall(MatSeqBAIJSetPreallocation(matis->A, bs, 0, matis->sf_leafdata));
1800: nlocalcols /= bs;
1801: for (i = 0; i < matis->sf->nleaves / bs; i++) matis->sf_leafdata[i] = PetscMin(matis->sf_leafdata[i], nlocalcols - i);
1802: PetscCall(MatSeqSBAIJSetPreallocation(matis->A, bs, 0, matis->sf_leafdata));
1804: /* for other matrix types */
1805: PetscCall(MatSetUp(matis->A));
1806: PetscFunctionReturn(PETSC_SUCCESS);
1807: }
1809: PETSC_EXTERN PetscErrorCode MatISSetMPIXAIJPreallocation_Private(Mat A, Mat B, PetscBool maxreduce)
1810: {
1811: Mat_IS *matis = (Mat_IS *)A->data;
1812: PetscInt *my_dnz, *my_onz, *dnz, *onz, *mat_ranges, *row_ownership;
1813: const PetscInt *global_indices_r, *global_indices_c;
1814: PetscInt i, j, bs, rows, cols;
1815: PetscInt lrows, lcols;
1816: PetscInt local_rows, local_cols;
1817: PetscMPIInt size;
1818: PetscBool isdense, issbaij;
1820: PetscFunctionBegin;
1821: PetscCallMPI(MPI_Comm_size(PetscObjectComm((PetscObject)A), &size));
1822: PetscCall(MatGetSize(A, &rows, &cols));
1823: PetscCall(MatGetBlockSize(A, &bs));
1824: PetscCall(MatGetSize(matis->A, &local_rows, &local_cols));
1825: PetscCall(PetscObjectBaseTypeCompare((PetscObject)matis->A, MATSEQDENSE, &isdense));
1826: PetscCall(PetscObjectBaseTypeCompare((PetscObject)matis->A, MATSEQSBAIJ, &issbaij));
1827: PetscCall(ISLocalToGlobalMappingGetIndices(matis->rmapping, &global_indices_r));
1828: if (matis->rmapping != matis->cmapping) {
1829: PetscCall(ISLocalToGlobalMappingGetIndices(matis->cmapping, &global_indices_c));
1830: } else global_indices_c = global_indices_r;
1832: if (issbaij) PetscCall(MatGetRowUpperTriangular(matis->A));
1833: /*
1834: An SF reduce is needed to sum up properly on shared rows.
1835: Note that generally preallocation is not exact, since it overestimates nonzeros
1836: */
1837: PetscCall(MatGetLocalSize(A, &lrows, &lcols));
1838: MatPreallocateBegin(PetscObjectComm((PetscObject)A), lrows, lcols, dnz, onz);
1839: /* All processes need to compute entire row ownership */
1840: PetscCall(PetscMalloc1(rows, &row_ownership));
1841: PetscCall(MatGetOwnershipRanges(A, (const PetscInt **)&mat_ranges));
1842: for (i = 0; i < size; i++) {
1843: for (j = mat_ranges[i]; j < mat_ranges[i + 1]; j++) row_ownership[j] = i;
1844: }
1845: PetscCall(MatGetOwnershipRangesColumn(A, (const PetscInt **)&mat_ranges));
1847: /*
1848: my_dnz and my_onz contains exact contribution to preallocation from each local mat
1849: then, they will be summed up properly. This way, preallocation is always sufficient
1850: */
1851: PetscCall(PetscCalloc2(local_rows, &my_dnz, local_rows, &my_onz));
1852: /* preallocation as a MATAIJ */
1853: if (isdense) { /* special case for dense local matrices */
1854: for (i = 0; i < local_rows; i++) {
1855: PetscInt owner = row_ownership[global_indices_r[i]];
1856: for (j = 0; j < local_cols; j++) {
1857: PetscInt index_col = global_indices_c[j];
1858: if (index_col > mat_ranges[owner] - 1 && index_col < mat_ranges[owner + 1]) { /* diag block */
1859: my_dnz[i] += 1;
1860: } else { /* offdiag block */
1861: my_onz[i] += 1;
1862: }
1863: }
1864: }
1865: } else if (matis->A->ops->getrowij) {
1866: const PetscInt *ii, *jj, *jptr;
1867: PetscBool done;
1868: PetscCall(MatGetRowIJ(matis->A, 0, PETSC_FALSE, PETSC_FALSE, &local_rows, &ii, &jj, &done));
1869: PetscCheck(done, PetscObjectComm((PetscObject)matis->A), PETSC_ERR_PLIB, "Error in MatGetRowIJ");
1870: jptr = jj;
1871: for (i = 0; i < local_rows; i++) {
1872: PetscInt index_row = global_indices_r[i];
1873: for (j = 0; j < ii[i + 1] - ii[i]; j++, jptr++) {
1874: PetscInt owner = row_ownership[index_row];
1875: PetscInt index_col = global_indices_c[*jptr];
1876: if (index_col > mat_ranges[owner] - 1 && index_col < mat_ranges[owner + 1]) { /* diag block */
1877: my_dnz[i] += 1;
1878: } else { /* offdiag block */
1879: my_onz[i] += 1;
1880: }
1881: /* same as before, interchanging rows and cols */
1882: if (issbaij && index_col != index_row) {
1883: owner = row_ownership[index_col];
1884: if (index_row > mat_ranges[owner] - 1 && index_row < mat_ranges[owner + 1]) {
1885: my_dnz[*jptr] += 1;
1886: } else {
1887: my_onz[*jptr] += 1;
1888: }
1889: }
1890: }
1891: }
1892: PetscCall(MatRestoreRowIJ(matis->A, 0, PETSC_FALSE, PETSC_FALSE, &local_rows, &ii, &jj, &done));
1893: PetscCheck(done, PetscObjectComm((PetscObject)matis->A), PETSC_ERR_PLIB, "Error in MatRestoreRowIJ");
1894: } else { /* loop over rows and use MatGetRow */
1895: for (i = 0; i < local_rows; i++) {
1896: const PetscInt *cols;
1897: PetscInt ncols, index_row = global_indices_r[i];
1898: PetscCall(MatGetRow(matis->A, i, &ncols, &cols, NULL));
1899: for (j = 0; j < ncols; j++) {
1900: PetscInt owner = row_ownership[index_row];
1901: PetscInt index_col = global_indices_c[cols[j]];
1902: if (index_col > mat_ranges[owner] - 1 && index_col < mat_ranges[owner + 1]) { /* diag block */
1903: my_dnz[i] += 1;
1904: } else { /* offdiag block */
1905: my_onz[i] += 1;
1906: }
1907: /* same as before, interchanging rows and cols */
1908: if (issbaij && index_col != index_row) {
1909: owner = row_ownership[index_col];
1910: if (index_row > mat_ranges[owner] - 1 && index_row < mat_ranges[owner + 1]) {
1911: my_dnz[cols[j]] += 1;
1912: } else {
1913: my_onz[cols[j]] += 1;
1914: }
1915: }
1916: }
1917: PetscCall(MatRestoreRow(matis->A, i, &ncols, &cols, NULL));
1918: }
1919: }
1920: if (global_indices_c != global_indices_r) PetscCall(ISLocalToGlobalMappingRestoreIndices(matis->cmapping, &global_indices_c));
1921: PetscCall(ISLocalToGlobalMappingRestoreIndices(matis->rmapping, &global_indices_r));
1922: PetscCall(PetscFree(row_ownership));
1924: /* Reduce my_dnz and my_onz */
1925: if (maxreduce) {
1926: PetscCall(PetscSFReduceBegin(matis->sf, MPIU_INT, my_dnz, dnz, MPI_MAX));
1927: PetscCall(PetscSFReduceBegin(matis->sf, MPIU_INT, my_onz, onz, MPI_MAX));
1928: PetscCall(PetscSFReduceEnd(matis->sf, MPIU_INT, my_dnz, dnz, MPI_MAX));
1929: PetscCall(PetscSFReduceEnd(matis->sf, MPIU_INT, my_onz, onz, MPI_MAX));
1930: } else {
1931: PetscCall(PetscSFReduceBegin(matis->sf, MPIU_INT, my_dnz, dnz, MPI_SUM));
1932: PetscCall(PetscSFReduceBegin(matis->sf, MPIU_INT, my_onz, onz, MPI_SUM));
1933: PetscCall(PetscSFReduceEnd(matis->sf, MPIU_INT, my_dnz, dnz, MPI_SUM));
1934: PetscCall(PetscSFReduceEnd(matis->sf, MPIU_INT, my_onz, onz, MPI_SUM));
1935: }
1936: PetscCall(PetscFree2(my_dnz, my_onz));
1938: /* Resize preallocation if overestimated */
1939: for (i = 0; i < lrows; i++) {
1940: dnz[i] = PetscMin(dnz[i], lcols);
1941: onz[i] = PetscMin(onz[i], cols - lcols);
1942: }
1944: /* Set preallocation */
1945: PetscCall(MatSetBlockSizesFromMats(B, A, A));
1946: PetscCall(MatSeqAIJSetPreallocation(B, 0, dnz));
1947: PetscCall(MatMPIAIJSetPreallocation(B, 0, dnz, 0, onz));
1948: for (i = 0; i < lrows; i += bs) {
1949: PetscInt b, d = dnz[i], o = onz[i];
1951: for (b = 1; b < bs; b++) {
1952: d = PetscMax(d, dnz[i + b]);
1953: o = PetscMax(o, onz[i + b]);
1954: }
1955: dnz[i / bs] = PetscMin(d / bs + d % bs, lcols / bs);
1956: onz[i / bs] = PetscMin(o / bs + o % bs, (cols - lcols) / bs);
1957: }
1958: PetscCall(MatSeqBAIJSetPreallocation(B, bs, 0, dnz));
1959: PetscCall(MatMPIBAIJSetPreallocation(B, bs, 0, dnz, 0, onz));
1960: PetscCall(MatMPISBAIJSetPreallocation(B, bs, 0, dnz, 0, onz));
1961: MatPreallocateEnd(dnz, onz);
1962: if (issbaij) PetscCall(MatRestoreRowUpperTriangular(matis->A));
1963: PetscCall(MatSetOption(B, MAT_NEW_NONZERO_ALLOCATION_ERR, PETSC_TRUE));
1964: PetscFunctionReturn(PETSC_SUCCESS);
1965: }
1967: PETSC_INTERN PetscErrorCode MatConvert_IS_XAIJ(Mat mat, MatType mtype, MatReuse reuse, Mat *M)
1968: {
1969: Mat_IS *matis = (Mat_IS *)mat->data;
1970: Mat local_mat, MT;
1971: PetscInt rbs, cbs, rows, cols, lrows, lcols;
1972: PetscInt local_rows, local_cols;
1973: PetscBool isseqdense, isseqsbaij, isseqaij, isseqbaij;
1974: PetscMPIInt size;
1975: const PetscScalar *array;
1977: PetscFunctionBegin;
1978: PetscCallMPI(MPI_Comm_size(PetscObjectComm((PetscObject)mat), &size));
1979: if (size == 1 && mat->rmap->N == matis->A->rmap->N && mat->cmap->N == matis->A->cmap->N && !matis->allow_repeated) {
1980: Mat B;
1981: IS irows = NULL, icols = NULL;
1982: PetscInt rbs, cbs;
1984: PetscCall(ISLocalToGlobalMappingGetBlockSize(matis->rmapping, &rbs));
1985: PetscCall(ISLocalToGlobalMappingGetBlockSize(matis->cmapping, &cbs));
1986: if (reuse != MAT_REUSE_MATRIX) { /* check if l2g maps are one-to-one */
1987: IS rows, cols;
1988: const PetscInt *ridxs, *cidxs;
1989: PetscInt i, nw;
1990: PetscBT work;
1992: PetscCall(ISLocalToGlobalMappingGetBlockIndices(matis->rmapping, &ridxs));
1993: PetscCall(ISLocalToGlobalMappingGetSize(matis->rmapping, &nw));
1994: nw = nw / rbs;
1995: PetscCall(PetscBTCreate(nw, &work));
1996: for (i = 0; i < nw; i++) PetscCall(PetscBTSet(work, ridxs[i]));
1997: for (i = 0; i < nw; i++)
1998: if (!PetscBTLookup(work, i)) break;
1999: if (i == nw) {
2000: PetscCall(ISCreateBlock(PETSC_COMM_SELF, rbs, nw, ridxs, PETSC_USE_POINTER, &rows));
2001: PetscCall(ISSetPermutation(rows));
2002: PetscCall(ISInvertPermutation(rows, PETSC_DECIDE, &irows));
2003: PetscCall(ISDestroy(&rows));
2004: }
2005: PetscCall(ISLocalToGlobalMappingRestoreBlockIndices(matis->rmapping, &ridxs));
2006: PetscCall(PetscBTDestroy(&work));
2007: if (irows && matis->rmapping != matis->cmapping) {
2008: PetscCall(ISLocalToGlobalMappingGetBlockIndices(matis->cmapping, &cidxs));
2009: PetscCall(ISLocalToGlobalMappingGetSize(matis->cmapping, &nw));
2010: nw = nw / cbs;
2011: PetscCall(PetscBTCreate(nw, &work));
2012: for (i = 0; i < nw; i++) PetscCall(PetscBTSet(work, cidxs[i]));
2013: for (i = 0; i < nw; i++)
2014: if (!PetscBTLookup(work, i)) break;
2015: if (i == nw) {
2016: PetscCall(ISCreateBlock(PETSC_COMM_SELF, cbs, nw, cidxs, PETSC_USE_POINTER, &cols));
2017: PetscCall(ISSetPermutation(cols));
2018: PetscCall(ISInvertPermutation(cols, PETSC_DECIDE, &icols));
2019: PetscCall(ISDestroy(&cols));
2020: }
2021: PetscCall(ISLocalToGlobalMappingRestoreBlockIndices(matis->cmapping, &cidxs));
2022: PetscCall(PetscBTDestroy(&work));
2023: } else if (irows) {
2024: PetscCall(PetscObjectReference((PetscObject)irows));
2025: icols = irows;
2026: }
2027: } else {
2028: PetscCall(PetscObjectQuery((PetscObject)*M, "_MatIS_IS_XAIJ_irows", (PetscObject *)&irows));
2029: PetscCall(PetscObjectQuery((PetscObject)*M, "_MatIS_IS_XAIJ_icols", (PetscObject *)&icols));
2030: if (irows) PetscCall(PetscObjectReference((PetscObject)irows));
2031: if (icols) PetscCall(PetscObjectReference((PetscObject)icols));
2032: }
2033: if (!irows || !icols) {
2034: PetscCall(ISDestroy(&icols));
2035: PetscCall(ISDestroy(&irows));
2036: goto general_assembly;
2037: }
2038: PetscCall(MatConvert(matis->A, mtype, MAT_INITIAL_MATRIX, &B));
2039: if (reuse != MAT_INPLACE_MATRIX) {
2040: PetscCall(MatCreateSubMatrix(B, irows, icols, reuse, M));
2041: PetscCall(PetscObjectCompose((PetscObject)*M, "_MatIS_IS_XAIJ_irows", (PetscObject)irows));
2042: PetscCall(PetscObjectCompose((PetscObject)*M, "_MatIS_IS_XAIJ_icols", (PetscObject)icols));
2043: } else {
2044: Mat C;
2046: PetscCall(MatCreateSubMatrix(B, irows, icols, MAT_INITIAL_MATRIX, &C));
2047: PetscCall(MatHeaderReplace(mat, &C));
2048: }
2049: PetscCall(MatDestroy(&B));
2050: PetscCall(ISDestroy(&icols));
2051: PetscCall(ISDestroy(&irows));
2052: PetscFunctionReturn(PETSC_SUCCESS);
2053: }
2054: general_assembly:
2055: PetscCall(MatGetSize(mat, &rows, &cols));
2056: PetscCall(ISLocalToGlobalMappingGetBlockSize(matis->rmapping, &rbs));
2057: PetscCall(ISLocalToGlobalMappingGetBlockSize(matis->cmapping, &cbs));
2058: PetscCall(MatGetLocalSize(mat, &lrows, &lcols));
2059: PetscCall(MatGetSize(matis->A, &local_rows, &local_cols));
2060: PetscCall(PetscObjectBaseTypeCompare((PetscObject)matis->A, MATSEQDENSE, &isseqdense));
2061: PetscCall(PetscObjectBaseTypeCompare((PetscObject)matis->A, MATSEQAIJ, &isseqaij));
2062: PetscCall(PetscObjectBaseTypeCompare((PetscObject)matis->A, MATSEQBAIJ, &isseqbaij));
2063: PetscCall(PetscObjectBaseTypeCompare((PetscObject)matis->A, MATSEQSBAIJ, &isseqsbaij));
2064: PetscCheck(isseqdense || isseqaij || isseqbaij || isseqsbaij, PETSC_COMM_SELF, PETSC_ERR_SUP, "Not for matrix type %s", ((PetscObject)matis->A)->type_name);
2065: if (PetscDefined(USE_DEBUG)) {
2066: PetscBool lb[4], bb[4];
2068: lb[0] = isseqdense;
2069: lb[1] = isseqaij;
2070: lb[2] = isseqbaij;
2071: lb[3] = isseqsbaij;
2072: PetscCallMPI(MPIU_Allreduce(lb, bb, 4, MPIU_BOOL, MPI_LAND, PetscObjectComm((PetscObject)mat)));
2073: PetscCheck(bb[0] || bb[1] || bb[2] || bb[3], PETSC_COMM_SELF, PETSC_ERR_SUP, "Local matrices must have the same type");
2074: }
2076: if (reuse != MAT_REUSE_MATRIX) {
2077: PetscCall(MatCreate(PetscObjectComm((PetscObject)mat), &MT));
2078: PetscCall(MatSetSizes(MT, lrows, lcols, rows, cols));
2079: PetscCall(MatSetType(MT, mtype));
2080: PetscCall(MatSetBlockSizes(MT, rbs, cbs));
2081: PetscCall(MatISSetMPIXAIJPreallocation_Private(mat, MT, PETSC_FALSE));
2082: } else {
2083: PetscInt mrbs, mcbs, mrows, mcols, mlrows, mlcols;
2085: /* some checks */
2086: MT = *M;
2087: PetscCall(MatGetBlockSizes(MT, &mrbs, &mcbs));
2088: PetscCall(MatGetSize(MT, &mrows, &mcols));
2089: PetscCall(MatGetLocalSize(MT, &mlrows, &mlcols));
2090: PetscCheck(mrows == rows, PetscObjectComm((PetscObject)mat), PETSC_ERR_SUP, "Cannot reuse matrix. Wrong number of rows (%" PetscInt_FMT " != %" PetscInt_FMT ")", rows, mrows);
2091: PetscCheck(mcols == cols, PetscObjectComm((PetscObject)mat), PETSC_ERR_SUP, "Cannot reuse matrix. Wrong number of cols (%" PetscInt_FMT " != %" PetscInt_FMT ")", cols, mcols);
2092: PetscCheck(mlrows == lrows, PetscObjectComm((PetscObject)mat), PETSC_ERR_SUP, "Cannot reuse matrix. Wrong number of local rows (%" PetscInt_FMT " != %" PetscInt_FMT ")", lrows, mlrows);
2093: PetscCheck(mlcols == lcols, PetscObjectComm((PetscObject)mat), PETSC_ERR_SUP, "Cannot reuse matrix. Wrong number of local cols (%" PetscInt_FMT " != %" PetscInt_FMT ")", lcols, mlcols);
2094: PetscCheck(mrbs == rbs, PetscObjectComm((PetscObject)mat), PETSC_ERR_SUP, "Cannot reuse matrix. Wrong row block size (%" PetscInt_FMT " != %" PetscInt_FMT ")", rbs, mrbs);
2095: PetscCheck(mcbs == cbs, PetscObjectComm((PetscObject)mat), PETSC_ERR_SUP, "Cannot reuse matrix. Wrong col block size (%" PetscInt_FMT " != %" PetscInt_FMT ")", cbs, mcbs);
2096: PetscCall(MatZeroEntries(MT));
2097: }
2099: if (isseqsbaij || isseqbaij) {
2100: PetscCall(MatConvert(matis->A, MATSEQAIJ, MAT_INITIAL_MATRIX, &local_mat));
2101: isseqaij = PETSC_TRUE;
2102: } else {
2103: PetscCall(PetscObjectReference((PetscObject)matis->A));
2104: local_mat = matis->A;
2105: }
2107: /* Set values */
2108: PetscCall(MatSetLocalToGlobalMapping(MT, matis->rmapping, matis->cmapping));
2109: if (isseqdense) { /* special case for dense local matrices */
2110: PetscInt i, *dummy;
2112: PetscCall(PetscMalloc1(PetscMax(local_rows, local_cols), &dummy));
2113: for (i = 0; i < PetscMax(local_rows, local_cols); i++) dummy[i] = i;
2114: PetscCall(MatSetOption(MT, MAT_ROW_ORIENTED, PETSC_FALSE));
2115: PetscCall(MatDenseGetArrayRead(local_mat, &array));
2116: PetscCall(MatSetValuesLocal(MT, local_rows, dummy, local_cols, dummy, array, ADD_VALUES));
2117: PetscCall(MatDenseRestoreArrayRead(local_mat, &array));
2118: PetscCall(PetscFree(dummy));
2119: } else if (isseqaij) {
2120: const PetscInt *blocks;
2121: PetscInt i, nvtxs, *xadj, *adjncy, nb;
2122: PetscBool done;
2123: PetscScalar *sarray;
2125: PetscCall(MatGetRowIJ(local_mat, 0, PETSC_FALSE, PETSC_FALSE, &nvtxs, (const PetscInt **)&xadj, (const PetscInt **)&adjncy, &done));
2126: PetscCheck(done, PetscObjectComm((PetscObject)local_mat), PETSC_ERR_PLIB, "Error in MatGetRowIJ");
2127: PetscCall(MatSeqAIJGetArray(local_mat, &sarray));
2128: PetscCall(MatGetVariableBlockSizes(local_mat, &nb, &blocks));
2129: if (nb) { /* speed up assembly for special blocked matrices (used by BDDC) */
2130: PetscInt sum;
2132: for (i = 0, sum = 0; i < nb; i++) sum += blocks[i];
2133: if (sum == nvtxs) {
2134: PetscInt r;
2136: for (i = 0, r = 0; i < nb; i++) {
2137: PetscAssert(blocks[i] == xadj[r + 1] - xadj[r], PETSC_COMM_SELF, PETSC_ERR_PLIB, "Invalid block sizes prescribed for block %" PetscInt_FMT ": expected %" PetscInt_FMT ", got %" PetscInt_FMT, i, blocks[i], xadj[r + 1] - xadj[r]);
2138: PetscCall(MatSetValuesLocal(MT, blocks[i], adjncy + xadj[r], blocks[i], adjncy + xadj[r], sarray + xadj[r], ADD_VALUES));
2139: r += blocks[i];
2140: }
2141: } else {
2142: for (i = 0; i < nvtxs; i++) PetscCall(MatSetValuesLocal(MT, 1, &i, xadj[i + 1] - xadj[i], adjncy + xadj[i], sarray + xadj[i], ADD_VALUES));
2143: }
2144: } else {
2145: for (i = 0; i < nvtxs; i++) PetscCall(MatSetValuesLocal(MT, 1, &i, xadj[i + 1] - xadj[i], PetscSafePointerPlusOffset(adjncy, xadj[i]), PetscSafePointerPlusOffset(sarray, xadj[i]), ADD_VALUES));
2146: }
2147: PetscCall(MatRestoreRowIJ(local_mat, 0, PETSC_FALSE, PETSC_FALSE, &nvtxs, (const PetscInt **)&xadj, (const PetscInt **)&adjncy, &done));
2148: PetscCheck(done, PetscObjectComm((PetscObject)local_mat), PETSC_ERR_PLIB, "Error in MatRestoreRowIJ");
2149: PetscCall(MatSeqAIJRestoreArray(local_mat, &sarray));
2150: } else { /* very basic values insertion for all other matrix types */
2151: for (PetscInt i = 0; i < local_rows; i++) {
2152: PetscInt j;
2153: const PetscInt *local_indices_cols;
2155: PetscCall(MatGetRow(local_mat, i, &j, &local_indices_cols, &array));
2156: PetscCall(MatSetValuesLocal(MT, 1, &i, j, local_indices_cols, array, ADD_VALUES));
2157: PetscCall(MatRestoreRow(local_mat, i, &j, &local_indices_cols, &array));
2158: }
2159: }
2160: PetscCall(MatDestroy(&local_mat));
2161: PetscCall(MatAssemblyBegin(MT, MAT_FINAL_ASSEMBLY));
2162: PetscCall(MatAssemblyEnd(MT, MAT_FINAL_ASSEMBLY));
2163: if (isseqdense) PetscCall(MatSetOption(MT, MAT_ROW_ORIENTED, PETSC_TRUE));
2164: if (reuse == MAT_INPLACE_MATRIX) {
2165: PetscCall(MatHeaderReplace(mat, &MT));
2166: } else if (reuse == MAT_INITIAL_MATRIX) {
2167: *M = MT;
2168: }
2169: PetscFunctionReturn(PETSC_SUCCESS);
2170: }
2172: static PetscErrorCode MatDuplicate_IS(Mat mat, MatDuplicateOption op, Mat *newmat)
2173: {
2174: Mat_IS *matis = (Mat_IS *)mat->data;
2175: PetscInt rbs, cbs, m, n, M, N;
2176: Mat B, localmat;
2178: PetscFunctionBegin;
2179: PetscCall(ISLocalToGlobalMappingGetBlockSize(mat->rmap->mapping, &rbs));
2180: PetscCall(ISLocalToGlobalMappingGetBlockSize(mat->cmap->mapping, &cbs));
2181: PetscCall(MatGetSize(mat, &M, &N));
2182: PetscCall(MatGetLocalSize(mat, &m, &n));
2183: PetscCall(MatCreate(PetscObjectComm((PetscObject)mat), &B));
2184: PetscCall(MatSetSizes(B, m, n, M, N));
2185: PetscCall(MatSetBlockSize(B, rbs == cbs ? rbs : 1));
2186: PetscCall(MatSetType(B, MATIS));
2187: PetscCall(MatISSetLocalMatType(B, matis->lmattype));
2188: PetscCall(MatISSetAllowRepeated(B, matis->allow_repeated));
2189: PetscCall(MatSetLocalToGlobalMapping(B, mat->rmap->mapping, mat->cmap->mapping));
2190: PetscCall(MatDuplicate(matis->A, op, &localmat));
2191: PetscCall(MatSetLocalToGlobalMapping(localmat, matis->A->rmap->mapping, matis->A->cmap->mapping));
2192: PetscCall(MatISSetLocalMat(B, localmat));
2193: PetscCall(MatDestroy(&localmat));
2194: PetscCall(MatAssemblyBegin(B, MAT_FINAL_ASSEMBLY));
2195: PetscCall(MatAssemblyEnd(B, MAT_FINAL_ASSEMBLY));
2196: *newmat = B;
2197: PetscFunctionReturn(PETSC_SUCCESS);
2198: }
2200: static PetscErrorCode MatIsHermitian_IS(Mat A, PetscReal tol, PetscBool *flg)
2201: {
2202: Mat_IS *matis = (Mat_IS *)A->data;
2203: PetscBool local_sym;
2205: PetscFunctionBegin;
2206: PetscCall(MatIsHermitian(matis->A, tol, &local_sym));
2207: PetscCallMPI(MPIU_Allreduce(&local_sym, flg, 1, MPIU_BOOL, MPI_LAND, PetscObjectComm((PetscObject)A)));
2208: PetscFunctionReturn(PETSC_SUCCESS);
2209: }
2211: static PetscErrorCode MatIsSymmetric_IS(Mat A, PetscReal tol, PetscBool *flg)
2212: {
2213: Mat_IS *matis = (Mat_IS *)A->data;
2214: PetscBool local_sym;
2216: PetscFunctionBegin;
2217: if (matis->rmapping != matis->cmapping) {
2218: *flg = PETSC_FALSE;
2219: PetscFunctionReturn(PETSC_SUCCESS);
2220: }
2221: PetscCall(MatIsSymmetric(matis->A, tol, &local_sym));
2222: PetscCallMPI(MPIU_Allreduce(&local_sym, flg, 1, MPIU_BOOL, MPI_LAND, PetscObjectComm((PetscObject)A)));
2223: PetscFunctionReturn(PETSC_SUCCESS);
2224: }
2226: static PetscErrorCode MatIsStructurallySymmetric_IS(Mat A, PetscBool *flg)
2227: {
2228: Mat_IS *matis = (Mat_IS *)A->data;
2229: PetscBool local_sym;
2231: PetscFunctionBegin;
2232: if (matis->rmapping != matis->cmapping) {
2233: *flg = PETSC_FALSE;
2234: PetscFunctionReturn(PETSC_SUCCESS);
2235: }
2236: PetscCall(MatIsStructurallySymmetric(matis->A, &local_sym));
2237: PetscCallMPI(MPIU_Allreduce(&local_sym, flg, 1, MPIU_BOOL, MPI_LAND, PetscObjectComm((PetscObject)A)));
2238: PetscFunctionReturn(PETSC_SUCCESS);
2239: }
2241: static PetscErrorCode MatDestroy_IS(Mat A)
2242: {
2243: Mat_IS *b = (Mat_IS *)A->data;
2245: PetscFunctionBegin;
2246: PetscCall(PetscFree(b->bdiag));
2247: PetscCall(PetscFree(b->lmattype));
2248: PetscCall(MatDestroy(&b->A));
2249: PetscCall(VecScatterDestroy(&b->cctx));
2250: PetscCall(VecScatterDestroy(&b->rctx));
2251: PetscCall(VecDestroy(&b->x));
2252: PetscCall(VecDestroy(&b->y));
2253: PetscCall(VecDestroy(&b->counter));
2254: PetscCall(ISDestroy(&b->getsub_ris));
2255: PetscCall(ISDestroy(&b->getsub_cis));
2256: if (b->sf != b->csf) {
2257: PetscCall(PetscSFDestroy(&b->csf));
2258: PetscCall(PetscFree2(b->csf_rootdata, b->csf_leafdata));
2259: } else b->csf = NULL;
2260: PetscCall(PetscSFDestroy(&b->sf));
2261: PetscCall(PetscFree2(b->sf_rootdata, b->sf_leafdata));
2262: PetscCall(ISLocalToGlobalMappingDestroy(&b->rmapping));
2263: PetscCall(ISLocalToGlobalMappingDestroy(&b->cmapping));
2264: PetscCall(MatDestroy(&b->dA));
2265: PetscCall(MatDestroy(&b->assembledA));
2266: PetscCall(PetscFree(A->data));
2267: PetscCall(PetscObjectChangeTypeName((PetscObject)A, NULL));
2268: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatISSetLocalMatType_C", NULL));
2269: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatISGetLocalMat_C", NULL));
2270: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatISSetLocalMat_C", NULL));
2271: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatISRestoreLocalMat_C", NULL));
2272: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatISSetPreallocation_C", NULL));
2273: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatISStoreL2L_C", NULL));
2274: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatISFixLocalEmpty_C", NULL));
2275: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatISGetLocalToGlobalMapping_C", NULL));
2276: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatConvert_is_mpiaij_C", NULL));
2277: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatConvert_is_mpibaij_C", NULL));
2278: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatConvert_is_mpisbaij_C", NULL));
2279: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatConvert_is_seqaij_C", NULL));
2280: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatConvert_is_seqbaij_C", NULL));
2281: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatConvert_is_seqsbaij_C", NULL));
2282: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatConvert_is_aij_C", NULL));
2283: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatSetPreallocationCOOLocal_C", NULL));
2284: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatSetPreallocationCOO_C", NULL));
2285: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatSetValuesCOO_C", NULL));
2286: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatISSetAllowRepeated_C", NULL));
2287: PetscFunctionReturn(PETSC_SUCCESS);
2288: }
2290: static PetscErrorCode MatMult_IS(Mat A, Vec x, Vec y)
2291: {
2292: Mat_IS *is = (Mat_IS *)A->data;
2293: PetscScalar zero = 0.0;
2295: PetscFunctionBegin;
2296: /* scatter the global vector x into the local work vector */
2297: PetscCall(VecScatterBegin(is->cctx, x, is->x, INSERT_VALUES, SCATTER_FORWARD));
2298: PetscCall(VecScatterEnd(is->cctx, x, is->x, INSERT_VALUES, SCATTER_FORWARD));
2300: /* multiply the local matrix */
2301: PetscCall(MatMult(is->A, is->x, is->y));
2303: /* scatter product back into global memory */
2304: PetscCall(VecSet(y, zero));
2305: PetscCall(VecScatterBegin(is->rctx, is->y, y, ADD_VALUES, SCATTER_REVERSE));
2306: PetscCall(VecScatterEnd(is->rctx, is->y, y, ADD_VALUES, SCATTER_REVERSE));
2307: PetscFunctionReturn(PETSC_SUCCESS);
2308: }
2310: static PetscErrorCode MatMultAdd_IS(Mat A, Vec v1, Vec v2, Vec v3)
2311: {
2312: Vec temp_vec;
2314: PetscFunctionBegin; /* v3 = v2 + A * v1.*/
2315: if (v3 != v2) {
2316: PetscCall(MatMult(A, v1, v3));
2317: PetscCall(VecAXPY(v3, 1.0, v2));
2318: } else {
2319: PetscCall(VecDuplicate(v2, &temp_vec));
2320: PetscCall(MatMult(A, v1, temp_vec));
2321: PetscCall(VecAXPY(temp_vec, 1.0, v2));
2322: PetscCall(VecCopy(temp_vec, v3));
2323: PetscCall(VecDestroy(&temp_vec));
2324: }
2325: PetscFunctionReturn(PETSC_SUCCESS);
2326: }
2328: static PetscErrorCode MatMultTranspose_IS(Mat A, Vec y, Vec x)
2329: {
2330: Mat_IS *is = (Mat_IS *)A->data;
2332: PetscFunctionBegin;
2333: /* scatter the global vector x into the local work vector */
2334: PetscCall(VecScatterBegin(is->rctx, y, is->y, INSERT_VALUES, SCATTER_FORWARD));
2335: PetscCall(VecScatterEnd(is->rctx, y, is->y, INSERT_VALUES, SCATTER_FORWARD));
2337: /* multiply the local matrix */
2338: PetscCall(MatMultTranspose(is->A, is->y, is->x));
2340: /* scatter product back into global vector */
2341: PetscCall(VecSet(x, 0));
2342: PetscCall(VecScatterBegin(is->cctx, is->x, x, ADD_VALUES, SCATTER_REVERSE));
2343: PetscCall(VecScatterEnd(is->cctx, is->x, x, ADD_VALUES, SCATTER_REVERSE));
2344: PetscFunctionReturn(PETSC_SUCCESS);
2345: }
2347: static PetscErrorCode MatMultTransposeAdd_IS(Mat A, Vec v1, Vec v2, Vec v3)
2348: {
2349: Vec temp_vec;
2351: PetscFunctionBegin; /* v3 = v2 + A' * v1.*/
2352: if (v3 != v2) {
2353: PetscCall(MatMultTranspose(A, v1, v3));
2354: PetscCall(VecAXPY(v3, 1.0, v2));
2355: } else {
2356: PetscCall(VecDuplicate(v2, &temp_vec));
2357: PetscCall(MatMultTranspose(A, v1, temp_vec));
2358: PetscCall(VecAXPY(temp_vec, 1.0, v2));
2359: PetscCall(VecCopy(temp_vec, v3));
2360: PetscCall(VecDestroy(&temp_vec));
2361: }
2362: PetscFunctionReturn(PETSC_SUCCESS);
2363: }
2365: static PetscErrorCode MatView_IS(Mat A, PetscViewer viewer)
2366: {
2367: Mat_IS *a = (Mat_IS *)A->data;
2368: PetscViewer sviewer;
2369: PetscBool isascii, isbinary, viewl2g = PETSC_FALSE, native;
2370: PetscViewerFormat format;
2371: ISLocalToGlobalMapping rmap, cmap;
2373: PetscFunctionBegin;
2374: PetscCall(PetscObjectTypeCompare((PetscObject)viewer, PETSCVIEWERASCII, &isascii));
2375: PetscCall(PetscObjectTypeCompare((PetscObject)viewer, PETSCVIEWERBINARY, &isbinary));
2376: PetscCall(PetscViewerGetFormat(viewer, &format));
2377: native = (PetscBool)(format == PETSC_VIEWER_NATIVE);
2378: if (native) {
2379: rmap = A->rmap->mapping;
2380: cmap = A->cmap->mapping;
2381: } else {
2382: rmap = a->rmapping;
2383: cmap = a->cmapping;
2384: }
2385: if (isascii) {
2386: if (format == PETSC_VIEWER_ASCII_INFO) PetscFunctionReturn(PETSC_SUCCESS);
2387: if (format == PETSC_VIEWER_ASCII_INFO_DETAIL || format == PETSC_VIEWER_ASCII_MATLAB) viewl2g = PETSC_TRUE;
2388: } else if (isbinary) {
2389: PetscInt tr[6], nr, nc;
2390: char lmattype[64] = {'\0'};
2391: PetscMPIInt size;
2392: PetscBool skipHeader;
2393: IS is;
2395: PetscCall(PetscViewerSetUp(viewer));
2396: PetscCallMPI(MPI_Comm_size(PetscObjectComm((PetscObject)viewer), &size));
2397: tr[0] = MAT_FILE_CLASSID;
2398: tr[1] = A->rmap->N;
2399: tr[2] = A->cmap->N;
2400: tr[3] = -size; /* AIJ stores nnz here */
2401: tr[4] = (PetscInt)(rmap == cmap);
2402: tr[5] = a->allow_repeated;
2403: PetscCall(PetscSNPrintf(lmattype, sizeof(lmattype), "%s", a->lmattype));
2405: PetscCall(PetscViewerBinaryWrite(viewer, tr, PETSC_STATIC_ARRAY_LENGTH(tr), PETSC_INT));
2406: PetscCall(PetscViewerBinaryWrite(viewer, lmattype, sizeof(lmattype), PETSC_CHAR));
2408: /* first dump l2g info (we need the header for proper loading on different number of processes) */
2409: PetscCall(PetscViewerBinaryGetSkipHeader(viewer, &skipHeader));
2410: PetscCall(PetscViewerBinarySetSkipHeader(viewer, PETSC_FALSE));
2411: PetscCall(ISLocalToGlobalMappingView(rmap, viewer));
2412: if (cmap != rmap) PetscCall(ISLocalToGlobalMappingView(cmap, viewer));
2414: /* then the sizes of the local matrices */
2415: PetscCall(MatGetSize(a->A, &nr, &nc));
2416: PetscCall(ISCreateGeneral(PetscObjectComm((PetscObject)viewer), 1, &nr, PETSC_USE_POINTER, &is));
2417: PetscCall(ISView(is, viewer));
2418: PetscCall(ISDestroy(&is));
2419: PetscCall(ISCreateGeneral(PetscObjectComm((PetscObject)viewer), 1, &nc, PETSC_USE_POINTER, &is));
2420: PetscCall(ISView(is, viewer));
2421: PetscCall(ISDestroy(&is));
2422: PetscCall(PetscViewerBinarySetSkipHeader(viewer, skipHeader));
2423: }
2424: if (format == PETSC_VIEWER_ASCII_MATLAB) {
2425: char name[64];
2426: PetscMPIInt size, rank;
2428: PetscCallMPI(MPI_Comm_size(PetscObjectComm((PetscObject)viewer), &size));
2429: PetscCallMPI(MPI_Comm_rank(PetscObjectComm((PetscObject)viewer), &rank));
2430: if (size > 1) PetscCall(PetscSNPrintf(name, sizeof(name), "lmat_%d", rank));
2431: else PetscCall(PetscSNPrintf(name, sizeof(name), "lmat"));
2432: PetscCall(PetscObjectSetName((PetscObject)a->A, name));
2433: }
2435: /* Dump the local matrices */
2436: if (isbinary) { /* ViewerGetSubViewer does not work in parallel */
2437: PetscBool isaij;
2438: PetscInt nr, nc;
2439: Mat lA, B;
2440: Mat_MPIAIJ *b;
2442: /* We create a temporary MPIAIJ matrix that stores the unassembled operator */
2443: PetscCall(PetscObjectBaseTypeCompare((PetscObject)a->A, MATAIJ, &isaij));
2444: if (!isaij) PetscCall(MatConvert(a->A, MATSEQAIJ, MAT_INITIAL_MATRIX, &lA));
2445: else {
2446: PetscCall(PetscObjectReference((PetscObject)a->A));
2447: lA = a->A;
2448: }
2449: PetscCall(MatCreate(PetscObjectComm((PetscObject)viewer), &B));
2450: PetscCall(MatSetType(B, MATMPIAIJ));
2451: PetscCall(MatGetSize(lA, &nr, &nc));
2452: PetscCall(MatSetSizes(B, nr, nc, PETSC_DECIDE, PETSC_DECIDE));
2453: PetscCall(MatMPIAIJSetPreallocation(B, 0, NULL, 0, NULL));
2455: b = (Mat_MPIAIJ *)B->data;
2456: PetscCall(MatDestroy(&b->A));
2457: b->A = lA;
2459: PetscCall(MatAssemblyBegin(B, MAT_FINAL_ASSEMBLY));
2460: PetscCall(MatAssemblyEnd(B, MAT_FINAL_ASSEMBLY));
2461: PetscCall(MatView(B, viewer));
2462: PetscCall(MatDestroy(&B));
2463: } else {
2464: PetscCall(PetscViewerGetSubViewer(viewer, PETSC_COMM_SELF, &sviewer));
2465: PetscCall(MatView(a->A, sviewer));
2466: PetscCall(PetscViewerRestoreSubViewer(viewer, PETSC_COMM_SELF, &sviewer));
2467: }
2469: /* with ASCII, we dump the l2gmaps at the end */
2470: if (viewl2g) {
2471: if (format == PETSC_VIEWER_ASCII_MATLAB) {
2472: PetscCall(PetscObjectSetName((PetscObject)rmap, "row"));
2473: PetscCall(ISLocalToGlobalMappingView(rmap, viewer));
2474: PetscCall(PetscObjectSetName((PetscObject)cmap, "col"));
2475: PetscCall(ISLocalToGlobalMappingView(cmap, viewer));
2476: } else {
2477: PetscCall(ISLocalToGlobalMappingView(rmap, viewer));
2478: PetscCall(ISLocalToGlobalMappingView(cmap, viewer));
2479: }
2480: }
2481: PetscFunctionReturn(PETSC_SUCCESS);
2482: }
2484: static PetscErrorCode MatLoad_IS(Mat A, PetscViewer viewer)
2485: {
2486: ISLocalToGlobalMapping rmap, cmap;
2487: MPI_Comm comm = PetscObjectComm((PetscObject)A);
2488: PetscBool isbinary, samel, allow, isbaij;
2489: PetscInt tr[6], M, N, nr, nc, Asize, isn;
2490: const PetscInt *idx;
2491: PetscMPIInt size;
2492: char lmattype[64];
2493: Mat dA, lA;
2494: IS is;
2496: PetscFunctionBegin;
2497: PetscCheckSameComm(A, 1, viewer, 2);
2498: PetscCall(PetscObjectTypeCompare((PetscObject)viewer, PETSCVIEWERBINARY, &isbinary));
2499: PetscCheck(isbinary, PetscObjectComm((PetscObject)viewer), PETSC_ERR_SUP, "Invalid viewer of type %s", ((PetscObject)viewer)->type_name);
2501: PetscCall(PetscViewerBinaryRead(viewer, tr, PETSC_STATIC_ARRAY_LENGTH(tr), NULL, PETSC_INT));
2502: PetscCheck(tr[0] == MAT_FILE_CLASSID, PETSC_COMM_SELF, PETSC_ERR_FILE_UNEXPECTED, "Not a matrix next in file");
2503: PetscCheck(tr[1] >= 0, PETSC_COMM_SELF, PETSC_ERR_FILE_UNEXPECTED, "Not a IS matrix next in file");
2504: PetscCheck(tr[2] >= 0, PETSC_COMM_SELF, PETSC_ERR_FILE_UNEXPECTED, "Not a IS matrix next in file");
2505: PetscCheck(tr[3] < 0, PETSC_COMM_SELF, PETSC_ERR_FILE_UNEXPECTED, "Not a IS matrix next in file");
2506: PetscCheck(tr[4] == 0 || tr[4] == 1, PETSC_COMM_SELF, PETSC_ERR_FILE_UNEXPECTED, "Not a IS matrix next in file");
2507: PetscCheck(tr[5] == 0 || tr[5] == 1, PETSC_COMM_SELF, PETSC_ERR_FILE_UNEXPECTED, "Not a IS matrix next in file");
2508: M = tr[1];
2509: N = tr[2];
2510: Asize = -tr[3];
2511: samel = (PetscBool)tr[4];
2512: allow = (PetscBool)tr[5];
2513: PetscCall(PetscViewerBinaryRead(viewer, lmattype, sizeof(lmattype), NULL, PETSC_CHAR));
2515: /* if we are loading from a larger set of processes, allow repeated entries */
2516: PetscCallMPI(MPI_Comm_size(PetscObjectComm((PetscObject)viewer), &size));
2517: if (Asize > size) allow = PETSC_TRUE;
2519: /* set global sizes if not set already */
2520: if (A->rmap->N < 0) A->rmap->N = M;
2521: if (A->cmap->N < 0) A->cmap->N = N;
2522: PetscCall(PetscLayoutSetUp(A->rmap));
2523: PetscCall(PetscLayoutSetUp(A->cmap));
2524: PetscCheck(M == A->rmap->N, comm, PETSC_ERR_ARG_SIZ, "Matrix rows should be %" PetscInt_FMT ", found %" PetscInt_FMT, M, A->rmap->N);
2525: PetscCheck(N == A->cmap->N, comm, PETSC_ERR_ARG_SIZ, "Matrix columns should be %" PetscInt_FMT ", found %" PetscInt_FMT, N, A->cmap->N);
2527: /* load l2g maps */
2528: PetscCall(ISLocalToGlobalMappingCreate(comm, 0, 0, NULL, PETSC_USE_POINTER, &rmap));
2529: PetscCall(ISLocalToGlobalMappingLoad(rmap, viewer));
2530: if (!samel) {
2531: PetscCall(ISLocalToGlobalMappingCreate(comm, 0, 0, NULL, PETSC_USE_POINTER, &cmap));
2532: PetscCall(ISLocalToGlobalMappingLoad(cmap, viewer));
2533: } else {
2534: PetscCall(PetscObjectReference((PetscObject)rmap));
2535: cmap = rmap;
2536: }
2538: /* load sizes of local matrices */
2539: PetscCall(ISCreate(comm, &is));
2540: PetscCall(ISSetType(is, ISGENERAL));
2541: PetscCall(ISLoad(is, viewer));
2542: PetscCall(ISGetLocalSize(is, &isn));
2543: PetscCall(ISGetIndices(is, &idx));
2544: nr = 0;
2545: for (PetscInt i = 0; i < isn; i++) nr += idx[i];
2546: PetscCall(ISRestoreIndices(is, &idx));
2547: PetscCall(ISDestroy(&is));
2548: PetscCall(ISCreate(comm, &is));
2549: PetscCall(ISSetType(is, ISGENERAL));
2550: PetscCall(ISLoad(is, viewer));
2551: PetscCall(ISGetLocalSize(is, &isn));
2552: PetscCall(ISGetIndices(is, &idx));
2553: nc = 0;
2554: for (PetscInt i = 0; i < isn; i++) nc += idx[i];
2555: PetscCall(ISRestoreIndices(is, &idx));
2556: PetscCall(ISDestroy(&is));
2558: /* now load the unassembled operator */
2559: PetscCall(MatCreate(comm, &dA));
2560: PetscCall(MatSetType(dA, MATMPIAIJ));
2561: PetscCall(MatSetSizes(dA, nr, nc, PETSC_DECIDE, PETSC_DECIDE));
2562: PetscCall(MatLoad(dA, viewer));
2563: PetscCall(MatMPIAIJGetSeqAIJ(dA, &lA, NULL, NULL));
2564: PetscCall(PetscObjectReference((PetscObject)lA));
2565: PetscCall(MatDestroy(&dA));
2567: /* and convert to the desired format */
2568: PetscCall(PetscStrcmpAny(lmattype, &isbaij, MATSBAIJ, MATSEQSBAIJ, ""));
2569: if (isbaij) PetscCall(MatSetOption(lA, MAT_SYMMETRIC, PETSC_TRUE));
2570: PetscCall(MatConvert(lA, lmattype, MAT_INPLACE_MATRIX, &lA));
2572: /* assemble the MATIS object */
2573: PetscCall(MatISSetAllowRepeated(A, allow));
2574: PetscCall(MatSetLocalToGlobalMapping(A, rmap, cmap));
2575: PetscCall(MatISSetLocalMat(A, lA));
2576: PetscCall(MatDestroy(&lA));
2577: PetscCall(ISLocalToGlobalMappingDestroy(&rmap));
2578: PetscCall(ISLocalToGlobalMappingDestroy(&cmap));
2579: PetscCall(MatAssemblyBegin(A, MAT_FINAL_ASSEMBLY));
2580: PetscCall(MatAssemblyEnd(A, MAT_FINAL_ASSEMBLY));
2581: PetscFunctionReturn(PETSC_SUCCESS);
2582: }
2584: static PetscErrorCode MatInvertBlockDiagonal_IS(Mat mat, const PetscScalar **values)
2585: {
2586: Mat_IS *is = (Mat_IS *)mat->data;
2587: MPI_Datatype nodeType;
2588: const PetscScalar *lv;
2589: PetscInt bs;
2590: PetscMPIInt mbs;
2592: PetscFunctionBegin;
2593: PetscCall(MatGetBlockSize(mat, &bs));
2594: PetscCall(MatSetBlockSize(is->A, bs));
2595: PetscCall(MatInvertBlockDiagonal(is->A, &lv));
2596: if (!is->bdiag) PetscCall(PetscMalloc1(bs * mat->rmap->n, &is->bdiag));
2597: PetscCall(PetscMPIIntCast(bs, &mbs));
2598: PetscCallMPI(MPI_Type_contiguous(mbs, MPIU_SCALAR, &nodeType));
2599: PetscCallMPI(MPI_Type_commit(&nodeType));
2600: PetscCall(PetscSFReduceBegin(is->sf, nodeType, lv, is->bdiag, MPI_REPLACE));
2601: PetscCall(PetscSFReduceEnd(is->sf, nodeType, lv, is->bdiag, MPI_REPLACE));
2602: PetscCallMPI(MPI_Type_free(&nodeType));
2603: if (values) *values = is->bdiag;
2604: PetscFunctionReturn(PETSC_SUCCESS);
2605: }
2607: static PetscErrorCode MatISSetUpScatters_Private(Mat A)
2608: {
2609: Vec cglobal, rglobal;
2610: IS from;
2611: Mat_IS *is = (Mat_IS *)A->data;
2612: PetscScalar sum;
2613: const PetscInt *garray;
2614: PetscInt nr, rbs, nc, cbs;
2615: VecType rtype;
2617: PetscFunctionBegin;
2618: PetscCall(ISLocalToGlobalMappingGetSize(is->rmapping, &nr));
2619: PetscCall(ISLocalToGlobalMappingGetBlockSize(is->rmapping, &rbs));
2620: PetscCall(ISLocalToGlobalMappingGetSize(is->cmapping, &nc));
2621: PetscCall(ISLocalToGlobalMappingGetBlockSize(is->cmapping, &cbs));
2622: PetscCall(VecDestroy(&is->x));
2623: PetscCall(VecDestroy(&is->y));
2624: PetscCall(VecDestroy(&is->counter));
2625: PetscCall(VecScatterDestroy(&is->rctx));
2626: PetscCall(VecScatterDestroy(&is->cctx));
2627: PetscCall(MatCreateVecs(is->A, &is->x, &is->y));
2628: PetscCall(VecBindToCPU(is->y, PETSC_TRUE));
2629: PetscCall(VecGetRootType_Private(is->y, &rtype));
2630: PetscCall(PetscFree(A->defaultvectype));
2631: PetscCall(PetscStrallocpy(rtype, &A->defaultvectype));
2632: PetscCall(MatCreateVecs(A, &cglobal, &rglobal));
2633: PetscCall(VecBindToCPU(rglobal, PETSC_TRUE));
2634: PetscCall(ISLocalToGlobalMappingGetBlockIndices(is->rmapping, &garray));
2635: PetscCall(ISCreateBlock(PetscObjectComm((PetscObject)A), rbs, nr / rbs, garray, PETSC_USE_POINTER, &from));
2636: PetscCall(VecScatterCreate(rglobal, from, is->y, NULL, &is->rctx));
2637: PetscCall(ISLocalToGlobalMappingRestoreBlockIndices(is->rmapping, &garray));
2638: PetscCall(ISDestroy(&from));
2639: if (is->rmapping != is->cmapping) {
2640: PetscCall(ISLocalToGlobalMappingGetBlockIndices(is->cmapping, &garray));
2641: PetscCall(ISCreateBlock(PetscObjectComm((PetscObject)A), cbs, nc / cbs, garray, PETSC_USE_POINTER, &from));
2642: PetscCall(VecScatterCreate(cglobal, from, is->x, NULL, &is->cctx));
2643: PetscCall(ISLocalToGlobalMappingRestoreBlockIndices(is->cmapping, &garray));
2644: PetscCall(ISDestroy(&from));
2645: } else {
2646: PetscCall(PetscObjectReference((PetscObject)is->rctx));
2647: is->cctx = is->rctx;
2648: }
2649: PetscCall(VecDestroy(&cglobal));
2651: /* interface counter vector (local) */
2652: PetscCall(VecDuplicate(is->y, &is->counter));
2653: PetscCall(VecBindToCPU(is->counter, PETSC_TRUE));
2654: PetscCall(VecSet(is->y, 1.));
2655: PetscCall(VecScatterBegin(is->rctx, is->y, rglobal, ADD_VALUES, SCATTER_REVERSE));
2656: PetscCall(VecScatterEnd(is->rctx, is->y, rglobal, ADD_VALUES, SCATTER_REVERSE));
2657: PetscCall(VecScatterBegin(is->rctx, rglobal, is->counter, INSERT_VALUES, SCATTER_FORWARD));
2658: PetscCall(VecScatterEnd(is->rctx, rglobal, is->counter, INSERT_VALUES, SCATTER_FORWARD));
2659: PetscCall(VecBindToCPU(is->y, PETSC_FALSE));
2660: PetscCall(VecBindToCPU(is->counter, PETSC_FALSE));
2662: /* special functions for block-diagonal matrices */
2663: PetscCall(VecSum(rglobal, &sum));
2664: A->ops->invertblockdiagonal = NULL;
2665: if ((PetscInt)(PetscRealPart(sum)) == A->rmap->N && A->rmap->N == A->cmap->N && is->rmapping == is->cmapping) A->ops->invertblockdiagonal = MatInvertBlockDiagonal_IS;
2666: PetscCall(VecDestroy(&rglobal));
2668: /* setup SF for general purpose shared indices based communications */
2669: PetscCall(MatISSetUpSF_IS(A));
2670: PetscFunctionReturn(PETSC_SUCCESS);
2671: }
2673: static PetscErrorCode MatISFilterL2GMap(Mat A, ISLocalToGlobalMapping map, ISLocalToGlobalMapping *nmap, ISLocalToGlobalMapping *lmap)
2674: {
2675: Mat_IS *matis = (Mat_IS *)A->data;
2676: IS is;
2677: ISLocalToGlobalMappingType l2gtype;
2678: const PetscInt *idxs;
2679: PetscHSetI ht;
2680: PetscInt *nidxs;
2681: PetscInt i, n, bs, c;
2682: PetscBool flg[] = {PETSC_FALSE, PETSC_FALSE};
2684: PetscFunctionBegin;
2685: PetscCall(ISLocalToGlobalMappingGetSize(map, &n));
2686: PetscCall(ISLocalToGlobalMappingGetBlockSize(map, &bs));
2687: PetscCall(ISLocalToGlobalMappingGetBlockIndices(map, &idxs));
2688: PetscCall(PetscHSetICreate(&ht));
2689: PetscCall(PetscMalloc1(n / bs, &nidxs));
2690: for (i = 0, c = 0; i < n / bs; i++) {
2691: PetscBool missing = PETSC_TRUE;
2692: if (idxs[i] < 0) {
2693: flg[0] = PETSC_TRUE;
2694: continue;
2695: }
2696: if (!matis->allow_repeated) PetscCall(PetscHSetIQueryAdd(ht, idxs[i], &missing));
2697: if (!missing) flg[1] = PETSC_TRUE;
2698: else nidxs[c++] = idxs[i];
2699: }
2700: PetscCall(PetscHSetIDestroy(&ht));
2701: PetscCallMPI(MPIU_Allreduce(MPI_IN_PLACE, flg, 2, MPIU_BOOL, MPI_LOR, PetscObjectComm((PetscObject)A)));
2702: if (!flg[0] && !flg[1]) { /* Entries are all non negative and unique */
2703: *nmap = NULL;
2704: *lmap = NULL;
2705: PetscCall(PetscFree(nidxs));
2706: PetscCall(ISLocalToGlobalMappingRestoreBlockIndices(map, &idxs));
2707: PetscFunctionReturn(PETSC_SUCCESS);
2708: }
2710: /* New l2g map without negative indices (and repeated indices if not allowed) */
2711: PetscCall(ISCreateBlock(PetscObjectComm((PetscObject)A), bs, c, nidxs, PETSC_USE_POINTER, &is));
2712: PetscCall(ISLocalToGlobalMappingCreateIS(is, nmap));
2713: PetscCall(ISDestroy(&is));
2714: PetscCall(ISLocalToGlobalMappingGetType(map, &l2gtype));
2715: PetscCall(ISLocalToGlobalMappingSetType(*nmap, l2gtype));
2717: /* New local l2g map for repeated indices if not allowed */
2718: PetscCall(ISGlobalToLocalMappingApplyBlock(*nmap, IS_GTOLM_MASK, n / bs, idxs, NULL, nidxs));
2719: PetscCall(ISCreateBlock(PETSC_COMM_SELF, bs, n / bs, nidxs, PETSC_USE_POINTER, &is));
2720: PetscCall(ISLocalToGlobalMappingCreateIS(is, lmap));
2721: PetscCall(ISDestroy(&is));
2722: PetscCall(PetscFree(nidxs));
2723: PetscCall(ISLocalToGlobalMappingRestoreBlockIndices(map, &idxs));
2724: PetscFunctionReturn(PETSC_SUCCESS);
2725: }
2727: static PetscErrorCode MatSetLocalToGlobalMapping_IS(Mat A, ISLocalToGlobalMapping rmapping, ISLocalToGlobalMapping cmapping)
2728: {
2729: Mat_IS *is = (Mat_IS *)A->data;
2730: ISLocalToGlobalMapping localrmapping = NULL, localcmapping = NULL;
2731: PetscInt nr, rbs, nc, cbs;
2732: PetscBool cong, freem[] = {PETSC_FALSE, PETSC_FALSE};
2734: PetscFunctionBegin;
2735: if (rmapping) PetscCheckSameComm(A, 1, rmapping, 2);
2736: if (cmapping) PetscCheckSameComm(A, 1, cmapping, 3);
2738: PetscCall(ISLocalToGlobalMappingDestroy(&is->rmapping));
2739: PetscCall(ISLocalToGlobalMappingDestroy(&is->cmapping));
2740: PetscCall(PetscLayoutSetUp(A->rmap));
2741: PetscCall(PetscLayoutSetUp(A->cmap));
2742: PetscCall(MatHasCongruentLayouts(A, &cong));
2744: /* If NULL, local space matches global space */
2745: if (!rmapping) {
2746: IS is;
2748: PetscCall(ISCreateStride(PetscObjectComm((PetscObject)A), A->rmap->N, 0, 1, &is));
2749: PetscCall(ISLocalToGlobalMappingCreateIS(is, &rmapping));
2750: if (A->rmap->bs > 0) PetscCall(ISLocalToGlobalMappingSetBlockSize(rmapping, A->rmap->bs));
2751: PetscCall(ISDestroy(&is));
2752: freem[0] = PETSC_TRUE;
2753: if (!cmapping && cong && A->rmap->bs == A->cmap->bs) cmapping = rmapping;
2754: } else if (!is->islocalref) { /* check if the l2g map has negative or repeated entries */
2755: PetscCall(MatISFilterL2GMap(A, rmapping, &is->rmapping, &localrmapping));
2756: if (rmapping == cmapping) {
2757: PetscCall(PetscObjectReference((PetscObject)is->rmapping));
2758: is->cmapping = is->rmapping;
2759: PetscCall(PetscObjectReference((PetscObject)localrmapping));
2760: localcmapping = localrmapping;
2761: }
2762: }
2763: if (!cmapping) {
2764: IS is;
2766: PetscCall(ISCreateStride(PetscObjectComm((PetscObject)A), A->cmap->N, 0, 1, &is));
2767: PetscCall(ISLocalToGlobalMappingCreateIS(is, &cmapping));
2768: if (A->cmap->bs > 0) PetscCall(ISLocalToGlobalMappingSetBlockSize(cmapping, A->cmap->bs));
2769: PetscCall(ISDestroy(&is));
2770: freem[1] = PETSC_TRUE;
2771: } else if (cmapping != rmapping && !is->islocalref) { /* check if the l2g map has negative or repeated entries */
2772: PetscCall(MatISFilterL2GMap(A, cmapping, &is->cmapping, &localcmapping));
2773: }
2774: if (!is->rmapping) {
2775: PetscCall(PetscObjectReference((PetscObject)rmapping));
2776: is->rmapping = rmapping;
2777: }
2778: if (!is->cmapping) {
2779: PetscCall(PetscObjectReference((PetscObject)cmapping));
2780: is->cmapping = cmapping;
2781: }
2783: /* Clean up */
2784: is->lnnzstate = 0;
2785: PetscCall(MatDestroy(&is->dA));
2786: PetscCall(MatDestroy(&is->assembledA));
2787: PetscCall(MatDestroy(&is->A));
2788: if (is->csf != is->sf) {
2789: PetscCall(PetscSFDestroy(&is->csf));
2790: PetscCall(PetscFree2(is->csf_rootdata, is->csf_leafdata));
2791: } else is->csf = NULL;
2792: PetscCall(PetscSFDestroy(&is->sf));
2793: PetscCall(PetscFree2(is->sf_rootdata, is->sf_leafdata));
2794: PetscCall(PetscFree(is->bdiag));
2796: /* check if the two mappings are actually the same for square matrices since MATIS has some optimization for this case
2797: (DOLFIN passes 2 different objects) */
2798: PetscCall(ISLocalToGlobalMappingGetSize(is->rmapping, &nr));
2799: PetscCall(ISLocalToGlobalMappingGetBlockSize(is->rmapping, &rbs));
2800: PetscCall(ISLocalToGlobalMappingGetSize(is->cmapping, &nc));
2801: PetscCall(ISLocalToGlobalMappingGetBlockSize(is->cmapping, &cbs));
2802: if (is->rmapping != is->cmapping && cong) {
2803: PetscBool same = PETSC_FALSE;
2804: if (nr == nc && cbs == rbs) {
2805: const PetscInt *idxs1, *idxs2;
2807: PetscCall(ISLocalToGlobalMappingGetBlockIndices(is->rmapping, &idxs1));
2808: PetscCall(ISLocalToGlobalMappingGetBlockIndices(is->cmapping, &idxs2));
2809: PetscCall(PetscArraycmp(idxs1, idxs2, nr / rbs, &same));
2810: PetscCall(ISLocalToGlobalMappingRestoreBlockIndices(is->rmapping, &idxs1));
2811: PetscCall(ISLocalToGlobalMappingRestoreBlockIndices(is->cmapping, &idxs2));
2812: }
2813: PetscCallMPI(MPIU_Allreduce(MPI_IN_PLACE, &same, 1, MPIU_BOOL, MPI_LAND, PetscObjectComm((PetscObject)A)));
2814: if (same) {
2815: PetscCall(ISLocalToGlobalMappingDestroy(&is->cmapping));
2816: PetscCall(PetscObjectReference((PetscObject)is->rmapping));
2817: is->cmapping = is->rmapping;
2818: }
2819: }
2820: PetscCall(PetscLayoutSetBlockSize(A->rmap, rbs));
2821: PetscCall(PetscLayoutSetBlockSize(A->cmap, cbs));
2822: /* Pass the user defined maps to the layout */
2823: PetscCall(PetscLayoutSetISLocalToGlobalMapping(A->rmap, rmapping));
2824: PetscCall(PetscLayoutSetISLocalToGlobalMapping(A->cmap, cmapping));
2825: if (freem[0]) PetscCall(ISLocalToGlobalMappingDestroy(&rmapping));
2826: if (freem[1]) PetscCall(ISLocalToGlobalMappingDestroy(&cmapping));
2828: /* Create the local matrix A */
2829: PetscCall(MatCreate(PETSC_COMM_SELF, &is->A));
2830: PetscCall(MatSetType(is->A, is->lmattype));
2831: PetscCall(MatSetSizes(is->A, nr, nc, nr, nc));
2832: PetscCall(MatSetBlockSizes(is->A, rbs, cbs));
2833: PetscCall(MatSetOptionsPrefix(is->A, "is_"));
2834: PetscCall(MatAppendOptionsPrefix(is->A, ((PetscObject)A)->prefix));
2835: PetscCall(PetscLayoutSetUp(is->A->rmap));
2836: PetscCall(PetscLayoutSetUp(is->A->cmap));
2837: PetscCall(MatSetLocalToGlobalMapping(is->A, localrmapping, localcmapping));
2838: PetscCall(ISLocalToGlobalMappingDestroy(&localrmapping));
2839: PetscCall(ISLocalToGlobalMappingDestroy(&localcmapping));
2841: /* setup scatters and local vectors for MatMult */
2842: if (!is->islocalref) PetscCall(MatISSetUpScatters_Private(A));
2843: A->preallocated = PETSC_TRUE;
2844: PetscFunctionReturn(PETSC_SUCCESS);
2845: }
2847: static PetscErrorCode MatSetUp_IS(Mat A)
2848: {
2849: ISLocalToGlobalMapping rmap, cmap;
2851: PetscFunctionBegin;
2852: PetscCall(MatGetLocalToGlobalMapping(A, &rmap, &cmap));
2853: if (!rmap && !cmap) PetscCall(MatSetLocalToGlobalMapping(A, NULL, NULL));
2854: PetscFunctionReturn(PETSC_SUCCESS);
2855: }
2857: static PetscErrorCode MatSetValues_IS(Mat mat, PetscInt m, const PetscInt *rows, PetscInt n, const PetscInt *cols, const PetscScalar *values, InsertMode addv)
2858: {
2859: Mat_IS *is = (Mat_IS *)mat->data;
2860: PetscInt rows_l[MATIS_MAX_ENTRIES_INSERTION], cols_l[MATIS_MAX_ENTRIES_INSERTION];
2862: PetscFunctionBegin;
2863: PetscCall(ISGlobalToLocalMappingApply(is->rmapping, IS_GTOLM_MASK, m, rows, &m, rows_l));
2864: if (m != n || rows != cols || is->cmapping != is->rmapping) {
2865: PetscCall(ISGlobalToLocalMappingApply(is->cmapping, IS_GTOLM_MASK, n, cols, &n, cols_l));
2866: PetscCall(MatSetValues(is->A, m, rows_l, n, cols_l, values, addv));
2867: } else {
2868: PetscCall(MatSetValues(is->A, m, rows_l, m, rows_l, values, addv));
2869: }
2870: PetscFunctionReturn(PETSC_SUCCESS);
2871: }
2873: static PetscErrorCode MatSetValuesBlocked_IS(Mat mat, PetscInt m, const PetscInt *rows, PetscInt n, const PetscInt *cols, const PetscScalar *values, InsertMode addv)
2874: {
2875: Mat_IS *is = (Mat_IS *)mat->data;
2876: PetscInt rows_l[MATIS_MAX_ENTRIES_INSERTION], cols_l[MATIS_MAX_ENTRIES_INSERTION];
2878: PetscFunctionBegin;
2879: PetscCall(ISGlobalToLocalMappingApplyBlock(is->rmapping, IS_GTOLM_MASK, m, rows, &m, rows_l));
2880: if (m != n || rows != cols || is->cmapping != is->rmapping) {
2881: PetscCall(ISGlobalToLocalMappingApplyBlock(is->cmapping, IS_GTOLM_MASK, n, cols, &n, cols_l));
2882: PetscCall(MatSetValuesBlocked(is->A, m, rows_l, n, cols_l, values, addv));
2883: } else {
2884: PetscCall(MatSetValuesBlocked(is->A, m, rows_l, m, rows_l, values, addv));
2885: }
2886: PetscFunctionReturn(PETSC_SUCCESS);
2887: }
2889: static PetscErrorCode MatSetValuesLocal_IS(Mat A, PetscInt m, const PetscInt *rows, PetscInt n, const PetscInt *cols, const PetscScalar *values, InsertMode addv)
2890: {
2891: Mat_IS *is = (Mat_IS *)A->data;
2893: PetscFunctionBegin;
2894: if (is->A->rmap->mapping || is->A->cmap->mapping) {
2895: PetscCall(MatSetValuesLocal(is->A, m, rows, n, cols, values, addv));
2896: } else {
2897: PetscCall(MatSetValues(is->A, m, rows, n, cols, values, addv));
2898: }
2899: PetscFunctionReturn(PETSC_SUCCESS);
2900: }
2902: static PetscErrorCode MatSetValuesBlockedLocal_IS(Mat A, PetscInt m, const PetscInt *rows, PetscInt n, const PetscInt *cols, const PetscScalar *values, InsertMode addv)
2903: {
2904: Mat_IS *is = (Mat_IS *)A->data;
2906: PetscFunctionBegin;
2907: if (is->A->rmap->mapping || is->A->cmap->mapping) {
2908: PetscCall(MatSetValuesBlockedLocal(is->A, m, rows, n, cols, values, addv));
2909: } else {
2910: PetscCall(MatSetValuesBlocked(is->A, m, rows, n, cols, values, addv));
2911: }
2912: PetscFunctionReturn(PETSC_SUCCESS);
2913: }
2915: static PetscErrorCode MatISZeroRowsColumnsLocal_Private(Mat A, PetscInt n, const PetscInt rows[], PetscScalar diag, PetscBool columns)
2916: {
2917: Mat_IS *is = (Mat_IS *)A->data;
2919: PetscFunctionBegin;
2920: if (!n) {
2921: is->pure_neumann = PETSC_TRUE;
2922: } else {
2923: PetscInt i;
2924: is->pure_neumann = PETSC_FALSE;
2926: if (columns) {
2927: PetscCall(MatZeroRowsColumns(is->A, n, rows, diag, NULL, NULL));
2928: } else {
2929: PetscCall(MatZeroRows(is->A, n, rows, diag, NULL, NULL));
2930: }
2931: if (diag != 0.) {
2932: const PetscScalar *array;
2933: PetscCall(VecGetArrayRead(is->counter, &array));
2934: for (i = 0; i < n; i++) PetscCall(MatSetValue(is->A, rows[i], rows[i], diag / (array[rows[i]]), INSERT_VALUES));
2935: PetscCall(VecRestoreArrayRead(is->counter, &array));
2936: }
2937: PetscCall(MatAssemblyBegin(is->A, MAT_FINAL_ASSEMBLY));
2938: PetscCall(MatAssemblyEnd(is->A, MAT_FINAL_ASSEMBLY));
2939: }
2940: PetscFunctionReturn(PETSC_SUCCESS);
2941: }
2943: static PetscErrorCode MatZeroRowsColumns_Private_IS(Mat A, PetscInt n, const PetscInt rows[], PetscScalar diag, Vec x, Vec b, PetscBool columns)
2944: {
2945: Mat_IS *matis = (Mat_IS *)A->data;
2946: PetscInt nr, nl, len, i;
2947: PetscInt *lrows;
2949: PetscFunctionBegin;
2950: if (PetscUnlikelyDebug(columns || diag != 0. || (x && b))) {
2951: PetscBool cong;
2953: PetscCall(PetscLayoutCompare(A->rmap, A->cmap, &cong));
2954: cong = (PetscBool)(cong && matis->sf == matis->csf);
2955: PetscCheck(cong || !columns, PetscObjectComm((PetscObject)A), PETSC_ERR_SUP, "Columns can be zeroed if and only if A->rmap and A->cmap are congruent and the l2g maps are the same for MATIS");
2956: PetscCheck(cong || diag == 0., PetscObjectComm((PetscObject)A), PETSC_ERR_SUP, "Nonzero diagonal value supported if and only if A->rmap and A->cmap are congruent and the l2g maps are the same for MATIS");
2957: PetscCheck(cong || !x || !b, PetscObjectComm((PetscObject)A), PETSC_ERR_SUP, "A->rmap and A->cmap need to be congruent, and the l2g maps be the same");
2958: }
2959: /* get locally owned rows */
2960: PetscCall(PetscLayoutMapLocal(A->rmap, n, rows, &len, &lrows, NULL));
2961: /* fix right-hand side if needed */
2962: if (x && b) {
2963: const PetscScalar *xx;
2964: PetscScalar *bb;
2966: PetscCall(VecGetArrayRead(x, &xx));
2967: PetscCall(VecGetArray(b, &bb));
2968: for (i = 0; i < len; ++i) bb[lrows[i]] = diag * xx[lrows[i]];
2969: PetscCall(VecRestoreArrayRead(x, &xx));
2970: PetscCall(VecRestoreArray(b, &bb));
2971: }
2972: /* get rows associated to the local matrices */
2973: PetscCall(MatGetSize(matis->A, &nl, NULL));
2974: PetscCall(PetscArrayzero(matis->sf_leafdata, nl));
2975: PetscCall(PetscArrayzero(matis->sf_rootdata, A->rmap->n));
2976: for (i = 0; i < len; i++) matis->sf_rootdata[lrows[i]] = 1;
2977: PetscCall(PetscFree(lrows));
2978: PetscCall(PetscSFBcastBegin(matis->sf, MPIU_INT, matis->sf_rootdata, matis->sf_leafdata, MPI_REPLACE));
2979: PetscCall(PetscSFBcastEnd(matis->sf, MPIU_INT, matis->sf_rootdata, matis->sf_leafdata, MPI_REPLACE));
2980: PetscCall(PetscMalloc1(nl, &lrows));
2981: for (i = 0, nr = 0; i < nl; i++)
2982: if (matis->sf_leafdata[i]) lrows[nr++] = i;
2983: PetscCall(MatISZeroRowsColumnsLocal_Private(A, nr, lrows, diag, columns));
2984: PetscCall(PetscFree(lrows));
2985: PetscCall(MatAssemblyBegin(A, MAT_FINAL_ASSEMBLY));
2986: PetscCall(MatAssemblyEnd(A, MAT_FINAL_ASSEMBLY));
2987: PetscFunctionReturn(PETSC_SUCCESS);
2988: }
2990: static PetscErrorCode MatZeroRows_IS(Mat A, PetscInt n, const PetscInt rows[], PetscScalar diag, Vec x, Vec b)
2991: {
2992: PetscFunctionBegin;
2993: PetscCall(MatZeroRowsColumns_Private_IS(A, n, rows, diag, x, b, PETSC_FALSE));
2994: PetscFunctionReturn(PETSC_SUCCESS);
2995: }
2997: static PetscErrorCode MatZeroRowsColumns_IS(Mat A, PetscInt n, const PetscInt rows[], PetscScalar diag, Vec x, Vec b)
2998: {
2999: PetscFunctionBegin;
3000: PetscCall(MatZeroRowsColumns_Private_IS(A, n, rows, diag, x, b, PETSC_TRUE));
3001: PetscFunctionReturn(PETSC_SUCCESS);
3002: }
3004: static PetscErrorCode MatAssemblyBegin_IS(Mat A, MatAssemblyType type)
3005: {
3006: Mat_IS *is = (Mat_IS *)A->data;
3008: PetscFunctionBegin;
3009: PetscCall(MatAssemblyBegin(is->A, type));
3010: PetscFunctionReturn(PETSC_SUCCESS);
3011: }
3013: static PetscErrorCode MatAssemblyEnd_IS(Mat A, MatAssemblyType type)
3014: {
3015: Mat_IS *is = (Mat_IS *)A->data;
3016: PetscBool lnnz;
3018: PetscFunctionBegin;
3019: PetscCall(MatAssemblyEnd(is->A, type));
3020: /* fix for local empty rows/cols */
3021: if (is->locempty && type == MAT_FINAL_ASSEMBLY) {
3022: Mat newlA;
3023: ISLocalToGlobalMapping rl2g, cl2g;
3024: IS nzr, nzc;
3025: PetscInt nr, nc, nnzr, nnzc;
3026: PetscBool lnewl2g, newl2g;
3028: PetscCall(MatGetSize(is->A, &nr, &nc));
3029: PetscCall(MatFindNonzeroRowsOrCols_Basic(is->A, PETSC_FALSE, PETSC_SMALL, &nzr));
3030: if (!nzr) PetscCall(ISCreateStride(PetscObjectComm((PetscObject)is->A), nr, 0, 1, &nzr));
3031: PetscCall(MatFindNonzeroRowsOrCols_Basic(is->A, PETSC_TRUE, PETSC_SMALL, &nzc));
3032: if (!nzc) PetscCall(ISCreateStride(PetscObjectComm((PetscObject)is->A), nc, 0, 1, &nzc));
3033: PetscCall(ISGetSize(nzr, &nnzr));
3034: PetscCall(ISGetSize(nzc, &nnzc));
3035: if (nnzr != nr || nnzc != nc) { /* need new global l2g map */
3036: lnewl2g = PETSC_TRUE;
3037: PetscCallMPI(MPIU_Allreduce(&lnewl2g, &newl2g, 1, MPIU_BOOL, MPI_LOR, PetscObjectComm((PetscObject)A)));
3039: /* extract valid submatrix */
3040: PetscCall(MatCreateSubMatrix(is->A, nzr, nzc, MAT_INITIAL_MATRIX, &newlA));
3041: } else { /* local matrix fully populated */
3042: lnewl2g = PETSC_FALSE;
3043: PetscCallMPI(MPIU_Allreduce(&lnewl2g, &newl2g, 1, MPIU_BOOL, MPI_LOR, PetscObjectComm((PetscObject)A)));
3044: PetscCall(PetscObjectReference((PetscObject)is->A));
3045: newlA = is->A;
3046: }
3048: /* attach new global l2g map if needed */
3049: if (newl2g) {
3050: IS zr, zc;
3051: const PetscInt *ridxs, *cidxs, *zridxs, *zcidxs;
3052: PetscInt *nidxs, i;
3054: PetscCall(ISComplement(nzr, 0, nr, &zr));
3055: PetscCall(ISComplement(nzc, 0, nc, &zc));
3056: PetscCall(PetscMalloc1(PetscMax(nr, nc), &nidxs));
3057: PetscCall(ISLocalToGlobalMappingGetIndices(is->rmapping, &ridxs));
3058: PetscCall(ISLocalToGlobalMappingGetIndices(is->cmapping, &cidxs));
3059: PetscCall(ISGetIndices(zr, &zridxs));
3060: PetscCall(ISGetIndices(zc, &zcidxs));
3061: PetscCall(ISGetLocalSize(zr, &nnzr));
3062: PetscCall(ISGetLocalSize(zc, &nnzc));
3064: PetscCall(PetscArraycpy(nidxs, ridxs, nr));
3065: for (i = 0; i < nnzr; i++) nidxs[zridxs[i]] = -1;
3066: PetscCall(ISLocalToGlobalMappingCreate(PetscObjectComm((PetscObject)A), 1, nr, nidxs, PETSC_COPY_VALUES, &rl2g));
3067: PetscCall(PetscArraycpy(nidxs, cidxs, nc));
3068: for (i = 0; i < nnzc; i++) nidxs[zcidxs[i]] = -1;
3069: PetscCall(ISLocalToGlobalMappingCreate(PetscObjectComm((PetscObject)A), 1, nc, nidxs, PETSC_COPY_VALUES, &cl2g));
3071: PetscCall(ISRestoreIndices(zr, &zridxs));
3072: PetscCall(ISRestoreIndices(zc, &zcidxs));
3073: PetscCall(ISLocalToGlobalMappingRestoreIndices(is->rmapping, &ridxs));
3074: PetscCall(ISLocalToGlobalMappingRestoreIndices(is->cmapping, &cidxs));
3075: PetscCall(ISDestroy(&nzr));
3076: PetscCall(ISDestroy(&nzc));
3077: PetscCall(ISDestroy(&zr));
3078: PetscCall(ISDestroy(&zc));
3079: PetscCall(PetscFree(nidxs));
3080: PetscCall(MatSetLocalToGlobalMapping(A, rl2g, cl2g));
3081: PetscCall(ISLocalToGlobalMappingDestroy(&rl2g));
3082: PetscCall(ISLocalToGlobalMappingDestroy(&cl2g));
3083: }
3084: PetscCall(MatISSetLocalMat(A, newlA));
3085: PetscCall(MatDestroy(&newlA));
3086: PetscCall(ISDestroy(&nzr));
3087: PetscCall(ISDestroy(&nzc));
3088: is->locempty = PETSC_FALSE;
3089: }
3090: lnnz = (PetscBool)(is->A->nonzerostate == is->lnnzstate);
3091: is->lnnzstate = is->A->nonzerostate;
3092: PetscCallMPI(MPIU_Allreduce(MPI_IN_PLACE, &lnnz, 1, MPIU_BOOL, MPI_LAND, PetscObjectComm((PetscObject)A)));
3093: if (!lnnz) A->nonzerostate++;
3094: PetscFunctionReturn(PETSC_SUCCESS);
3095: }
3097: static PetscErrorCode MatISGetLocalMat_IS(Mat mat, Mat *local)
3098: {
3099: Mat_IS *is = (Mat_IS *)mat->data;
3101: PetscFunctionBegin;
3102: *local = is->A;
3103: PetscFunctionReturn(PETSC_SUCCESS);
3104: }
3106: static PetscErrorCode MatISRestoreLocalMat_IS(Mat mat, Mat *local)
3107: {
3108: PetscFunctionBegin;
3109: *local = NULL;
3110: PetscFunctionReturn(PETSC_SUCCESS);
3111: }
3113: /*@
3114: MatISGetLocalMat - Gets the local matrix stored inside a `MATIS` matrix.
3116: Not Collective.
3118: Input Parameter:
3119: . mat - the matrix
3121: Output Parameter:
3122: . local - the local matrix
3124: Level: intermediate
3126: Notes:
3127: This can be called if you have precomputed the nonzero structure of the
3128: matrix and want to provide it to the inner matrix object to improve the performance
3129: of the `MatSetValues()` operation.
3131: Call `MatISRestoreLocalMat()` when finished with the local matrix.
3133: .seealso: [](ch_matrices), `Mat`, `MATIS`, `MatISRestoreLocalMat()`
3134: @*/
3135: PetscErrorCode MatISGetLocalMat(Mat mat, Mat *local)
3136: {
3137: PetscFunctionBegin;
3139: PetscAssertPointer(local, 2);
3140: PetscUseMethod(mat, "MatISGetLocalMat_C", (Mat, Mat *), (mat, local));
3141: PetscFunctionReturn(PETSC_SUCCESS);
3142: }
3144: /*@
3145: MatISRestoreLocalMat - Restores the local matrix obtained with `MatISGetLocalMat()`
3147: Not Collective.
3149: Input Parameters:
3150: + mat - the matrix
3151: - local - the local matrix
3153: Level: intermediate
3155: .seealso: [](ch_matrices), `Mat`, `MATIS`, `MatISGetLocalMat()`
3156: @*/
3157: PetscErrorCode MatISRestoreLocalMat(Mat mat, Mat *local)
3158: {
3159: PetscFunctionBegin;
3161: PetscAssertPointer(local, 2);
3162: PetscUseMethod(mat, "MatISRestoreLocalMat_C", (Mat, Mat *), (mat, local));
3163: PetscFunctionReturn(PETSC_SUCCESS);
3164: }
3166: static PetscErrorCode MatISSetLocalMatType_IS(Mat mat, MatType mtype)
3167: {
3168: Mat_IS *is = (Mat_IS *)mat->data;
3170: PetscFunctionBegin;
3171: if (is->A) PetscCall(MatSetType(is->A, mtype));
3172: PetscCall(PetscFree(is->lmattype));
3173: PetscCall(PetscStrallocpy(mtype, &is->lmattype));
3174: PetscFunctionReturn(PETSC_SUCCESS);
3175: }
3177: /*@
3178: MatISSetLocalMatType - Specifies the type of local matrix inside the `MATIS`
3180: Logically Collective.
3182: Input Parameters:
3183: + mat - the matrix
3184: - mtype - the local matrix type
3186: Level: intermediate
3188: .seealso: [](ch_matrices), `Mat`, `MATIS`, `MatSetType()`, `MatType`
3189: @*/
3190: PetscErrorCode MatISSetLocalMatType(Mat mat, MatType mtype)
3191: {
3192: PetscFunctionBegin;
3194: PetscUseMethod(mat, "MatISSetLocalMatType_C", (Mat, MatType), (mat, mtype));
3195: PetscFunctionReturn(PETSC_SUCCESS);
3196: }
3198: static PetscErrorCode MatISSetLocalMat_IS(Mat mat, Mat local)
3199: {
3200: Mat_IS *is = (Mat_IS *)mat->data;
3201: PetscInt nrows, ncols, orows, ocols;
3202: MatType mtype, otype;
3203: PetscBool sametype = PETSC_TRUE;
3205: PetscFunctionBegin;
3206: if (is->A && !is->islocalref) {
3207: PetscCall(MatGetSize(is->A, &orows, &ocols));
3208: PetscCall(MatGetSize(local, &nrows, &ncols));
3209: PetscCheck(orows == nrows && ocols == ncols, PETSC_COMM_SELF, PETSC_ERR_ARG_SIZ, "Local MATIS matrix should be of size %" PetscInt_FMT "x%" PetscInt_FMT " (passed a %" PetscInt_FMT "x%" PetscInt_FMT " matrix)", orows, ocols, nrows, ncols);
3210: PetscCall(MatGetType(local, &mtype));
3211: PetscCall(MatGetType(is->A, &otype));
3212: PetscCall(PetscStrcmp(mtype, otype, &sametype));
3213: }
3214: PetscCall(PetscObjectReference((PetscObject)local));
3215: PetscCall(MatDestroy(&is->A));
3216: is->A = local;
3217: PetscCall(MatGetType(is->A, &mtype));
3218: PetscCall(MatISSetLocalMatType(mat, mtype));
3219: if (!sametype && !is->islocalref) PetscCall(MatISSetUpScatters_Private(mat));
3220: is->lnnzstate = 0;
3221: PetscFunctionReturn(PETSC_SUCCESS);
3222: }
3224: /*@
3225: MatISSetLocalMat - Replace the local matrix stored inside a `MATIS` object.
3227: Not Collective
3229: Input Parameters:
3230: + mat - the matrix
3231: - local - the local matrix
3233: Level: intermediate
3235: .seealso: [](ch_matrices), `Mat`, `MATIS`, `MatISSetLocalMatType`, `MatISGetLocalMat()`
3236: @*/
3237: PetscErrorCode MatISSetLocalMat(Mat mat, Mat local)
3238: {
3239: PetscFunctionBegin;
3242: PetscUseMethod(mat, "MatISSetLocalMat_C", (Mat, Mat), (mat, local));
3243: PetscFunctionReturn(PETSC_SUCCESS);
3244: }
3246: static PetscErrorCode MatZeroEntries_IS(Mat A)
3247: {
3248: Mat_IS *a = (Mat_IS *)A->data;
3250: PetscFunctionBegin;
3251: PetscCall(MatZeroEntries(a->A));
3252: PetscFunctionReturn(PETSC_SUCCESS);
3253: }
3255: static PetscErrorCode MatScale_IS(Mat A, PetscScalar a)
3256: {
3257: Mat_IS *is = (Mat_IS *)A->data;
3259: PetscFunctionBegin;
3260: PetscCall(MatScale(is->A, a));
3261: PetscFunctionReturn(PETSC_SUCCESS);
3262: }
3264: static PetscErrorCode MatGetDiagonal_IS(Mat A, Vec v)
3265: {
3266: Mat_IS *is = (Mat_IS *)A->data;
3268: PetscFunctionBegin;
3269: /* get diagonal of the local matrix */
3270: PetscCall(MatGetDiagonal(is->A, is->y));
3272: /* scatter diagonal back into global vector */
3273: PetscCall(VecSet(v, 0));
3274: PetscCall(VecScatterBegin(is->rctx, is->y, v, ADD_VALUES, SCATTER_REVERSE));
3275: PetscCall(VecScatterEnd(is->rctx, is->y, v, ADD_VALUES, SCATTER_REVERSE));
3276: PetscFunctionReturn(PETSC_SUCCESS);
3277: }
3279: static PetscErrorCode MatSetOption_IS(Mat A, MatOption op, PetscBool flg)
3280: {
3281: Mat_IS *a = (Mat_IS *)A->data;
3283: PetscFunctionBegin;
3284: PetscCall(MatSetOption(a->A, op, flg));
3285: PetscFunctionReturn(PETSC_SUCCESS);
3286: }
3288: static PetscErrorCode MatAXPY_IS(Mat Y, PetscScalar a, Mat X, MatStructure str)
3289: {
3290: Mat_IS *y = (Mat_IS *)Y->data;
3291: Mat_IS *x;
3293: PetscFunctionBegin;
3294: if (PetscDefined(USE_DEBUG)) {
3295: PetscBool ismatis;
3296: PetscCall(PetscObjectTypeCompare((PetscObject)X, MATIS, &ismatis));
3297: PetscCheck(ismatis, PetscObjectComm((PetscObject)Y), PETSC_ERR_SUP, "Cannot call MatAXPY(Y,a,X,str) with X not of type MATIS");
3298: }
3299: x = (Mat_IS *)X->data;
3300: PetscCall(MatAXPY(y->A, a, x->A, str));
3301: PetscFunctionReturn(PETSC_SUCCESS);
3302: }
3304: static PetscErrorCode MatGetLocalSubMatrix_IS(Mat A, IS row, IS col, Mat *submat)
3305: {
3306: Mat lA;
3307: Mat_IS *matis = (Mat_IS *)A->data;
3308: ISLocalToGlobalMapping rl2g, cl2g;
3309: IS is;
3310: const PetscInt *rg, *rl;
3311: PetscInt nrg;
3312: PetscInt N, M, nrl, i, *idxs;
3314: PetscFunctionBegin;
3315: PetscCall(ISLocalToGlobalMappingGetIndices(A->rmap->mapping, &rg));
3316: PetscCall(ISGetLocalSize(row, &nrl));
3317: PetscCall(ISGetIndices(row, &rl));
3318: PetscCall(ISLocalToGlobalMappingGetSize(A->rmap->mapping, &nrg));
3319: if (PetscDefined(USE_DEBUG)) {
3320: for (i = 0; i < nrl; i++) PetscCheck(rl[i] < nrg, PETSC_COMM_SELF, PETSC_ERR_ARG_WRONG, "Local row index %" PetscInt_FMT " -> %" PetscInt_FMT " greater then maximum possible %" PetscInt_FMT, i, rl[i], nrg);
3321: }
3322: PetscCall(PetscMalloc1(nrg, &idxs));
3323: /* map from [0,nrl) to row */
3324: for (i = 0; i < nrl; i++) idxs[i] = rl[i];
3325: for (i = nrl; i < nrg; i++) idxs[i] = -1;
3326: PetscCall(ISRestoreIndices(row, &rl));
3327: PetscCall(ISLocalToGlobalMappingRestoreIndices(A->rmap->mapping, &rg));
3328: PetscCall(ISCreateGeneral(PetscObjectComm((PetscObject)A), nrg, idxs, PETSC_OWN_POINTER, &is));
3329: PetscCall(ISLocalToGlobalMappingCreateIS(is, &rl2g));
3330: PetscCall(ISDestroy(&is));
3331: /* compute new l2g map for columns */
3332: if (col != row || matis->rmapping != matis->cmapping || matis->A->rmap->mapping != matis->A->cmap->mapping) {
3333: const PetscInt *cg, *cl;
3334: PetscInt ncg;
3335: PetscInt ncl;
3337: PetscCall(ISLocalToGlobalMappingGetIndices(A->cmap->mapping, &cg));
3338: PetscCall(ISGetLocalSize(col, &ncl));
3339: PetscCall(ISGetIndices(col, &cl));
3340: PetscCall(ISLocalToGlobalMappingGetSize(A->cmap->mapping, &ncg));
3341: if (PetscDefined(USE_DEBUG)) {
3342: for (i = 0; i < ncl; i++) PetscCheck(cl[i] < ncg, PETSC_COMM_SELF, PETSC_ERR_ARG_WRONG, "Local column index %" PetscInt_FMT " -> %" PetscInt_FMT " greater then maximum possible %" PetscInt_FMT, i, cl[i], ncg);
3343: }
3344: PetscCall(PetscMalloc1(ncg, &idxs));
3345: /* map from [0,ncl) to col */
3346: for (i = 0; i < ncl; i++) idxs[i] = cl[i];
3347: for (i = ncl; i < ncg; i++) idxs[i] = -1;
3348: PetscCall(ISRestoreIndices(col, &cl));
3349: PetscCall(ISLocalToGlobalMappingRestoreIndices(A->cmap->mapping, &cg));
3350: PetscCall(ISCreateGeneral(PetscObjectComm((PetscObject)A), ncg, idxs, PETSC_OWN_POINTER, &is));
3351: PetscCall(ISLocalToGlobalMappingCreateIS(is, &cl2g));
3352: PetscCall(ISDestroy(&is));
3353: } else {
3354: PetscCall(PetscObjectReference((PetscObject)rl2g));
3355: cl2g = rl2g;
3356: }
3357: /* create the MATIS submatrix */
3358: PetscCall(MatGetSize(A, &M, &N));
3359: PetscCall(MatCreate(PetscObjectComm((PetscObject)A), submat));
3360: PetscCall(MatSetSizes(*submat, PETSC_DECIDE, PETSC_DECIDE, M, N));
3361: PetscCall(MatSetType(*submat, MATIS));
3362: matis = (Mat_IS *)((*submat)->data);
3363: matis->islocalref = PETSC_TRUE;
3364: PetscCall(MatSetLocalToGlobalMapping(*submat, rl2g, cl2g));
3365: PetscCall(MatISGetLocalMat(A, &lA));
3366: PetscCall(MatISSetLocalMat(*submat, lA));
3367: PetscCall(MatSetUp(*submat));
3368: PetscCall(MatAssemblyBegin(*submat, MAT_FINAL_ASSEMBLY));
3369: PetscCall(MatAssemblyEnd(*submat, MAT_FINAL_ASSEMBLY));
3370: PetscCall(ISLocalToGlobalMappingDestroy(&rl2g));
3371: PetscCall(ISLocalToGlobalMappingDestroy(&cl2g));
3373: /* remove unsupported ops */
3374: PetscCall(PetscMemzero((*submat)->ops, sizeof(struct _MatOps)));
3375: (*submat)->ops->destroy = MatDestroy_IS;
3376: (*submat)->ops->setvalueslocal = MatSetValuesLocal_SubMat_IS;
3377: (*submat)->ops->setvaluesblockedlocal = MatSetValuesBlockedLocal_SubMat_IS;
3378: (*submat)->ops->assemblybegin = MatAssemblyBegin_IS;
3379: (*submat)->ops->assemblyend = MatAssemblyEnd_IS;
3380: PetscFunctionReturn(PETSC_SUCCESS);
3381: }
3383: static PetscErrorCode MatSetFromOptions_IS(Mat A, PetscOptionItems *PetscOptionsObject)
3384: {
3385: Mat_IS *a = (Mat_IS *)A->data;
3386: char type[256];
3387: PetscBool flg;
3389: PetscFunctionBegin;
3390: PetscOptionsHeadBegin(PetscOptionsObject, "MATIS options");
3391: PetscCall(PetscOptionsDeprecated("-matis_keepassembled", "-mat_is_keepassembled", "3.21", NULL));
3392: PetscCall(PetscOptionsDeprecated("-matis_fixempty", "-mat_is_fixempty", "3.21", NULL));
3393: PetscCall(PetscOptionsDeprecated("-matis_storel2l", "-mat_is_storel2l", "3.21", NULL));
3394: PetscCall(PetscOptionsDeprecated("-matis_localmat_type", "-mat_is_localmat_type", "3.21", NULL));
3395: PetscCall(PetscOptionsBool("-mat_is_keepassembled", "Store an assembled version if needed", NULL, a->keepassembled, &a->keepassembled, NULL));
3396: PetscCall(PetscOptionsBool("-mat_is_fixempty", "Fix local matrices in case of empty local rows/columns", "MatISFixLocalEmpty", a->locempty, &a->locempty, NULL));
3397: PetscCall(PetscOptionsBool("-mat_is_storel2l", "Store local-to-local matrices generated from PtAP operations", "MatISStoreL2L", a->storel2l, &a->storel2l, NULL));
3398: PetscCall(PetscOptionsBool("-mat_is_allow_repeated", "Allow local repeated entries", "MatISSetAllowRepeated", a->allow_repeated, &a->allow_repeated, NULL));
3399: PetscCall(PetscOptionsFList("-mat_is_localmat_type", "Matrix type", "MatISSetLocalMatType", MatList, a->lmattype, type, 256, &flg));
3400: if (flg) PetscCall(MatISSetLocalMatType(A, type));
3401: if (a->A) PetscCall(MatSetFromOptions(a->A));
3402: PetscOptionsHeadEnd();
3403: PetscFunctionReturn(PETSC_SUCCESS);
3404: }
3406: /*@
3407: MatCreateIS - Creates a "process" unassembled matrix.
3409: Collective.
3411: Input Parameters:
3412: + comm - MPI communicator that will share the matrix
3413: . bs - block size of the matrix
3414: . m - local size of left vector used in matrix vector products
3415: . n - local size of right vector used in matrix vector products
3416: . M - global size of left vector used in matrix vector products
3417: . N - global size of right vector used in matrix vector products
3418: . rmap - local to global map for rows
3419: - cmap - local to global map for cols
3421: Output Parameter:
3422: . A - the resulting matrix
3424: Level: intermediate
3426: Notes:
3427: `m` and `n` are NOT related to the size of the map; they represent the size of the local parts of the distributed vectors
3428: used in `MatMult()` operations. The local sizes of `rmap` and `cmap` define the size of the local matrices.
3430: If `rmap` (`cmap`) is `NULL`, then the local row (column) spaces matches the global space.
3432: .seealso: [](ch_matrices), `Mat`, `MATIS`, `MatSetLocalToGlobalMapping()`
3433: @*/
3434: PetscErrorCode MatCreateIS(MPI_Comm comm, PetscInt bs, PetscInt m, PetscInt n, PetscInt M, PetscInt N, ISLocalToGlobalMapping rmap, ISLocalToGlobalMapping cmap, Mat *A)
3435: {
3436: PetscFunctionBegin;
3437: PetscCall(MatCreate(comm, A));
3438: PetscCall(MatSetSizes(*A, m, n, M, N));
3439: if (bs > 0) PetscCall(MatSetBlockSize(*A, bs));
3440: PetscCall(MatSetType(*A, MATIS));
3441: PetscCall(MatSetLocalToGlobalMapping(*A, rmap, cmap));
3442: PetscFunctionReturn(PETSC_SUCCESS);
3443: }
3445: static PetscErrorCode MatHasOperation_IS(Mat A, MatOperation op, PetscBool *has)
3446: {
3447: Mat_IS *a = (Mat_IS *)A->data;
3448: MatOperation tobefiltered[] = {MATOP_MULT_ADD, MATOP_MULT_TRANSPOSE_ADD, MATOP_GET_DIAGONAL_BLOCK, MATOP_INCREASE_OVERLAP};
3450: PetscFunctionBegin;
3451: *has = PETSC_FALSE;
3452: if (!((void **)A->ops)[op] || !a->A) PetscFunctionReturn(PETSC_SUCCESS);
3453: *has = PETSC_TRUE;
3454: for (PetscInt i = 0; i < (PetscInt)PETSC_STATIC_ARRAY_LENGTH(tobefiltered); i++)
3455: if (op == tobefiltered[i]) PetscFunctionReturn(PETSC_SUCCESS);
3456: PetscCall(MatHasOperation(a->A, op, has));
3457: PetscFunctionReturn(PETSC_SUCCESS);
3458: }
3460: static PetscErrorCode MatSetValuesCOO_IS(Mat A, const PetscScalar v[], InsertMode imode)
3461: {
3462: Mat_IS *a = (Mat_IS *)A->data;
3464: PetscFunctionBegin;
3465: PetscCall(MatSetValuesCOO(a->A, v, imode));
3466: PetscCall(MatAssemblyBegin(A, MAT_FINAL_ASSEMBLY));
3467: PetscCall(MatAssemblyEnd(A, MAT_FINAL_ASSEMBLY));
3468: PetscFunctionReturn(PETSC_SUCCESS);
3469: }
3471: static PetscErrorCode MatSetPreallocationCOOLocal_IS(Mat A, PetscCount ncoo, PetscInt coo_i[], PetscInt coo_j[])
3472: {
3473: Mat_IS *a = (Mat_IS *)A->data;
3475: PetscFunctionBegin;
3476: PetscCheck(a->A, PetscObjectComm((PetscObject)A), PETSC_ERR_ORDER, "Need to provide l2g map first via MatSetLocalToGlobalMapping");
3477: if (a->A->rmap->mapping || a->A->cmap->mapping) {
3478: PetscCall(MatSetPreallocationCOOLocal(a->A, ncoo, coo_i, coo_j));
3479: } else {
3480: PetscCall(MatSetPreallocationCOO(a->A, ncoo, coo_i, coo_j));
3481: }
3482: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatSetValuesCOO_C", MatSetValuesCOO_IS));
3483: A->preallocated = PETSC_TRUE;
3484: PetscFunctionReturn(PETSC_SUCCESS);
3485: }
3487: static PetscErrorCode MatSetPreallocationCOO_IS(Mat A, PetscCount ncoo, PetscInt coo_i[], PetscInt coo_j[])
3488: {
3489: Mat_IS *a = (Mat_IS *)A->data;
3490: PetscInt ncoo_i;
3492: PetscFunctionBegin;
3493: PetscCheck(a->A, PetscObjectComm((PetscObject)A), PETSC_ERR_ORDER, "Need to provide l2g map first via MatSetLocalToGlobalMapping");
3494: PetscCall(PetscIntCast(ncoo, &ncoo_i));
3495: PetscCall(ISGlobalToLocalMappingApply(a->rmapping, IS_GTOLM_MASK, ncoo_i, coo_i, NULL, coo_i));
3496: PetscCall(ISGlobalToLocalMappingApply(a->cmapping, IS_GTOLM_MASK, ncoo_i, coo_j, NULL, coo_j));
3497: PetscCall(MatSetPreallocationCOO(a->A, ncoo, coo_i, coo_j));
3498: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatSetValuesCOO_C", MatSetValuesCOO_IS));
3499: A->preallocated = PETSC_TRUE;
3500: PetscFunctionReturn(PETSC_SUCCESS);
3501: }
3503: static PetscErrorCode MatISGetAssembled_Private(Mat A, Mat *tA)
3504: {
3505: Mat_IS *a = (Mat_IS *)A->data;
3506: PetscObjectState Astate, aAstate = PETSC_INT_MIN;
3507: PetscObjectState Annzstate, aAnnzstate = PETSC_INT_MIN;
3509: PetscFunctionBegin;
3510: PetscCall(PetscObjectStateGet((PetscObject)A, &Astate));
3511: Annzstate = A->nonzerostate;
3512: if (a->assembledA) {
3513: PetscCall(PetscObjectStateGet((PetscObject)a->assembledA, &aAstate));
3514: aAnnzstate = a->assembledA->nonzerostate;
3515: }
3516: if (aAnnzstate != Annzstate) PetscCall(MatDestroy(&a->assembledA));
3517: if (Astate != aAstate || !a->assembledA) {
3518: MatType aAtype;
3519: PetscMPIInt size;
3520: PetscInt rbs, cbs, bs;
3522: /* the assembled form is used as temporary storage for parallel operations
3523: like createsubmatrices and the like, do not waste device memory */
3524: PetscCallMPI(MPI_Comm_size(PetscObjectComm((PetscObject)A), &size));
3525: PetscCall(ISLocalToGlobalMappingGetBlockSize(a->cmapping, &cbs));
3526: PetscCall(ISLocalToGlobalMappingGetBlockSize(a->rmapping, &rbs));
3527: bs = rbs == cbs ? rbs : 1;
3528: if (a->assembledA) PetscCall(MatGetType(a->assembledA, &aAtype));
3529: else if (size > 1) aAtype = bs > 1 ? MATMPIBAIJ : MATMPIAIJ;
3530: else aAtype = bs > 1 ? MATSEQBAIJ : MATSEQAIJ;
3532: PetscCall(MatConvert(A, aAtype, a->assembledA ? MAT_REUSE_MATRIX : MAT_INITIAL_MATRIX, &a->assembledA));
3533: PetscCall(PetscObjectStateSet((PetscObject)a->assembledA, Astate));
3534: a->assembledA->nonzerostate = Annzstate;
3535: }
3536: PetscCall(PetscObjectReference((PetscObject)a->assembledA));
3537: *tA = a->assembledA;
3538: if (!a->keepassembled) PetscCall(MatDestroy(&a->assembledA));
3539: PetscFunctionReturn(PETSC_SUCCESS);
3540: }
3542: static PetscErrorCode MatISRestoreAssembled_Private(Mat A, Mat *tA)
3543: {
3544: PetscFunctionBegin;
3545: PetscCall(MatDestroy(tA));
3546: *tA = NULL;
3547: PetscFunctionReturn(PETSC_SUCCESS);
3548: }
3550: static PetscErrorCode MatGetDiagonalBlock_IS(Mat A, Mat *dA)
3551: {
3552: Mat_IS *a = (Mat_IS *)A->data;
3553: PetscObjectState Astate, dAstate = PETSC_INT_MIN;
3555: PetscFunctionBegin;
3556: PetscCall(PetscObjectStateGet((PetscObject)A, &Astate));
3557: if (a->dA) PetscCall(PetscObjectStateGet((PetscObject)a->dA, &dAstate));
3558: if (Astate != dAstate) {
3559: Mat tA;
3560: MatType ltype;
3562: PetscCall(MatDestroy(&a->dA));
3563: PetscCall(MatISGetAssembled_Private(A, &tA));
3564: PetscCall(MatGetDiagonalBlock(tA, &a->dA));
3565: PetscCall(MatPropagateSymmetryOptions(tA, a->dA));
3566: PetscCall(MatGetType(a->A, <ype));
3567: PetscCall(MatConvert(a->dA, ltype, MAT_INPLACE_MATRIX, &a->dA));
3568: PetscCall(PetscObjectReference((PetscObject)a->dA));
3569: PetscCall(MatISRestoreAssembled_Private(A, &tA));
3570: PetscCall(PetscObjectStateSet((PetscObject)a->dA, Astate));
3571: }
3572: *dA = a->dA;
3573: PetscFunctionReturn(PETSC_SUCCESS);
3574: }
3576: static PetscErrorCode MatCreateSubMatrices_IS(Mat A, PetscInt n, const IS irow[], const IS icol[], MatReuse reuse, Mat *submat[])
3577: {
3578: Mat tA;
3580: PetscFunctionBegin;
3581: PetscCall(MatISGetAssembled_Private(A, &tA));
3582: PetscCall(MatCreateSubMatrices(tA, n, irow, icol, reuse, submat));
3583: /* MatCreateSubMatrices_MPIAIJ is a mess at the moment */
3584: #if 0
3585: {
3586: Mat_IS *a = (Mat_IS*)A->data;
3587: MatType ltype;
3588: VecType vtype;
3589: char *flg;
3591: PetscCall(MatGetType(a->A,<ype));
3592: PetscCall(MatGetVecType(a->A,&vtype));
3593: PetscCall(PetscStrstr(vtype,"cuda",&flg));
3594: if (!flg) PetscCall(PetscStrstr(vtype,"hip",&flg));
3595: if (!flg) PetscCall(PetscStrstr(vtype,"kokkos",&flg));
3596: if (flg) {
3597: for (PetscInt i = 0; i < n; i++) {
3598: Mat sA = (*submat)[i];
3600: PetscCall(MatConvert(sA,ltype,MAT_INPLACE_MATRIX,&sA));
3601: (*submat)[i] = sA;
3602: }
3603: }
3604: }
3605: #endif
3606: PetscCall(MatISRestoreAssembled_Private(A, &tA));
3607: PetscFunctionReturn(PETSC_SUCCESS);
3608: }
3610: static PetscErrorCode MatIncreaseOverlap_IS(Mat A, PetscInt n, IS is[], PetscInt ov)
3611: {
3612: Mat tA;
3614: PetscFunctionBegin;
3615: PetscCall(MatISGetAssembled_Private(A, &tA));
3616: PetscCall(MatIncreaseOverlap(tA, n, is, ov));
3617: PetscCall(MatISRestoreAssembled_Private(A, &tA));
3618: PetscFunctionReturn(PETSC_SUCCESS);
3619: }
3621: /*@
3622: MatISGetLocalToGlobalMapping - Gets the local-to-global numbering of the `MATIS` object
3624: Not Collective
3626: Input Parameter:
3627: . A - the matrix
3629: Output Parameters:
3630: + rmapping - row mapping
3631: - cmapping - column mapping
3633: Level: advanced
3635: Note:
3636: The returned map can be different from the one used to construct the `MATIS` object, since it will not contain negative or repeated indices.
3638: .seealso: [](ch_matrices), `Mat`, `MatIS`, `MatSetLocalToGlobalMapping()`
3639: @*/
3640: PetscErrorCode MatISGetLocalToGlobalMapping(Mat A, ISLocalToGlobalMapping *rmapping, ISLocalToGlobalMapping *cmapping)
3641: {
3642: PetscFunctionBegin;
3645: if (rmapping) PetscAssertPointer(rmapping, 2);
3646: if (cmapping) PetscAssertPointer(cmapping, 3);
3647: PetscUseMethod(A, "MatISGetLocalToGlobalMapping_C", (Mat, ISLocalToGlobalMapping *, ISLocalToGlobalMapping *), (A, rmapping, cmapping));
3648: PetscFunctionReturn(PETSC_SUCCESS);
3649: }
3651: static PetscErrorCode MatISGetLocalToGlobalMapping_IS(Mat A, ISLocalToGlobalMapping *r, ISLocalToGlobalMapping *c)
3652: {
3653: Mat_IS *a = (Mat_IS *)A->data;
3655: PetscFunctionBegin;
3656: if (r) *r = a->rmapping;
3657: if (c) *c = a->cmapping;
3658: PetscFunctionReturn(PETSC_SUCCESS);
3659: }
3661: static PetscErrorCode MatSetBlockSizes_IS(Mat A, PetscInt rbs, PetscInt cbs)
3662: {
3663: Mat_IS *a = (Mat_IS *)A->data;
3665: PetscFunctionBegin;
3666: if (a->A) PetscCall(MatSetBlockSizes(a->A, rbs, cbs));
3667: PetscFunctionReturn(PETSC_SUCCESS);
3668: }
3670: /*MC
3671: MATIS - MATIS = "is" - A matrix type to be used for non-overlapping domain decomposition methods (e.g. `PCBDDC` or `KSPFETIDP`).
3672: This stores the matrices in globally unassembled form and the parallel matrix vector product is handled "implicitly".
3674: Options Database Keys:
3675: + -mat_type is - Set the matrix type to `MATIS`.
3676: . -mat_is_allow_repeated - Allow repeated entries in the local part of the local to global maps.
3677: . -mat_is_fixempty - Fix local matrices in case of empty local rows/columns.
3678: - -mat_is_storel2l - Store the local-to-local operators generated by the Galerkin process of `MatPtAP()`.
3680: Level: intermediate
3682: Notes:
3683: Options prefix for the inner matrix are given by `-is_mat_xxx`
3685: You must call `MatSetLocalToGlobalMapping()` before using this matrix type.
3687: You can do matrix preallocation on the local matrix after you obtain it with
3688: `MatISGetLocalMat()`; otherwise, you could use `MatISSetPreallocation()` or `MatXAIJSetPreallocation()`
3690: .seealso: [](ch_matrices), `Mat`, `MATIS`, `Mat`, `MatISGetLocalMat()`, `MatSetLocalToGlobalMapping()`, `MatISSetPreallocation()`, `MatCreateIS()`, `PCBDDC`, `KSPFETIDP`
3691: M*/
3692: PETSC_EXTERN PetscErrorCode MatCreate_IS(Mat A)
3693: {
3694: Mat_IS *a;
3696: PetscFunctionBegin;
3697: PetscCall(PetscNew(&a));
3698: PetscCall(PetscStrallocpy(MATAIJ, &a->lmattype));
3699: A->data = (void *)a;
3701: /* matrix ops */
3702: PetscCall(PetscMemzero(A->ops, sizeof(struct _MatOps)));
3703: A->ops->mult = MatMult_IS;
3704: A->ops->multadd = MatMultAdd_IS;
3705: A->ops->multtranspose = MatMultTranspose_IS;
3706: A->ops->multtransposeadd = MatMultTransposeAdd_IS;
3707: A->ops->destroy = MatDestroy_IS;
3708: A->ops->setlocaltoglobalmapping = MatSetLocalToGlobalMapping_IS;
3709: A->ops->setvalues = MatSetValues_IS;
3710: A->ops->setvaluesblocked = MatSetValuesBlocked_IS;
3711: A->ops->setvalueslocal = MatSetValuesLocal_IS;
3712: A->ops->setvaluesblockedlocal = MatSetValuesBlockedLocal_IS;
3713: A->ops->zerorows = MatZeroRows_IS;
3714: A->ops->zerorowscolumns = MatZeroRowsColumns_IS;
3715: A->ops->assemblybegin = MatAssemblyBegin_IS;
3716: A->ops->assemblyend = MatAssemblyEnd_IS;
3717: A->ops->view = MatView_IS;
3718: A->ops->load = MatLoad_IS;
3719: A->ops->zeroentries = MatZeroEntries_IS;
3720: A->ops->scale = MatScale_IS;
3721: A->ops->getdiagonal = MatGetDiagonal_IS;
3722: A->ops->setoption = MatSetOption_IS;
3723: A->ops->ishermitian = MatIsHermitian_IS;
3724: A->ops->issymmetric = MatIsSymmetric_IS;
3725: A->ops->isstructurallysymmetric = MatIsStructurallySymmetric_IS;
3726: A->ops->duplicate = MatDuplicate_IS;
3727: A->ops->missingdiagonal = MatMissingDiagonal_IS;
3728: A->ops->copy = MatCopy_IS;
3729: A->ops->getlocalsubmatrix = MatGetLocalSubMatrix_IS;
3730: A->ops->createsubmatrix = MatCreateSubMatrix_IS;
3731: A->ops->axpy = MatAXPY_IS;
3732: A->ops->diagonalset = MatDiagonalSet_IS;
3733: A->ops->shift = MatShift_IS;
3734: A->ops->transpose = MatTranspose_IS;
3735: A->ops->getinfo = MatGetInfo_IS;
3736: A->ops->diagonalscale = MatDiagonalScale_IS;
3737: A->ops->setfromoptions = MatSetFromOptions_IS;
3738: A->ops->setup = MatSetUp_IS;
3739: A->ops->hasoperation = MatHasOperation_IS;
3740: A->ops->getdiagonalblock = MatGetDiagonalBlock_IS;
3741: A->ops->createsubmatrices = MatCreateSubMatrices_IS;
3742: A->ops->increaseoverlap = MatIncreaseOverlap_IS;
3743: A->ops->setblocksizes = MatSetBlockSizes_IS;
3745: /* special MATIS functions */
3746: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatISSetLocalMatType_C", MatISSetLocalMatType_IS));
3747: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatISGetLocalMat_C", MatISGetLocalMat_IS));
3748: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatISRestoreLocalMat_C", MatISRestoreLocalMat_IS));
3749: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatISSetLocalMat_C", MatISSetLocalMat_IS));
3750: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatISSetPreallocation_C", MatISSetPreallocation_IS));
3751: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatISSetAllowRepeated_C", MatISSetAllowRepeated_IS));
3752: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatISStoreL2L_C", MatISStoreL2L_IS));
3753: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatISFixLocalEmpty_C", MatISFixLocalEmpty_IS));
3754: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatISGetLocalToGlobalMapping_C", MatISGetLocalToGlobalMapping_IS));
3755: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatConvert_is_mpiaij_C", MatConvert_IS_XAIJ));
3756: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatConvert_is_mpibaij_C", MatConvert_IS_XAIJ));
3757: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatConvert_is_mpisbaij_C", MatConvert_IS_XAIJ));
3758: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatConvert_is_seqaij_C", MatConvert_IS_XAIJ));
3759: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatConvert_is_seqbaij_C", MatConvert_IS_XAIJ));
3760: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatConvert_is_seqsbaij_C", MatConvert_IS_XAIJ));
3761: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatConvert_is_aij_C", MatConvert_IS_XAIJ));
3762: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatSetPreallocationCOOLocal_C", MatSetPreallocationCOOLocal_IS));
3763: PetscCall(PetscObjectComposeFunction((PetscObject)A, "MatSetPreallocationCOO_C", MatSetPreallocationCOO_IS));
3764: PetscCall(PetscObjectChangeTypeName((PetscObject)A, MATIS));
3765: PetscFunctionReturn(PETSC_SUCCESS);
3766: }