Actual source code: pcpatch.c
1: #include <petsc/private/pcpatchimpl.h>
2: #include <petsc/private/kspimpl.h>
3: #include <petsc/private/vecimpl.h>
4: #include <petsc/private/dmpleximpl.h>
5: #include <petscsf.h>
6: #include <petscbt.h>
7: #include <petscds.h>
8: #include <../src/mat/impls/dense/seq/dense.h>
10: PetscBool PCPatchcite = PETSC_FALSE;
11: const char PCPatchCitation[] = "@article{FarrellKnepleyWechsungMitchell2020,\n"
12: "title = {{PCPATCH}: software for the topological construction of multigrid relaxation methods},\n"
13: "author = {Patrick E Farrell and Matthew G Knepley and Lawrence Mitchell and Florian Wechsung},\n"
14: "journal = {ACM Transaction on Mathematical Software},\n"
15: "eprint = {http://arxiv.org/abs/1912.08516},\n"
16: "volume = {47},\n"
17: "number = {3},\n"
18: "pages = {1--22},\n"
19: "year = {2021},\n"
20: "petsc_uses={KSP,DMPlex}\n}\n";
22: PetscLogEvent PC_Patch_CreatePatches, PC_Patch_ComputeOp, PC_Patch_Solve, PC_Patch_Apply, PC_Patch_Prealloc;
24: static inline PetscErrorCode ObjectView(PetscObject obj, PetscViewer viewer, PetscViewerFormat format)
25: {
26: PetscCall(PetscViewerPushFormat(viewer, format));
27: PetscCall(PetscObjectView(obj, viewer));
28: PetscCall(PetscViewerPopFormat(viewer));
29: return PETSC_SUCCESS;
30: }
32: static PetscErrorCode PCPatchConstruct_Star(void *vpatch, DM dm, PetscInt point, PetscHSetI ht)
33: {
34: PetscInt starSize;
35: PetscInt *star = NULL, si;
37: PetscFunctionBegin;
38: PetscCall(PetscHSetIClear(ht));
39: /* To start with, add the point we care about */
40: PetscCall(PetscHSetIAdd(ht, point));
41: /* Loop over all the points that this point connects to */
42: PetscCall(DMPlexGetTransitiveClosure(dm, point, PETSC_FALSE, &starSize, &star));
43: for (si = 0; si < starSize * 2; si += 2) PetscCall(PetscHSetIAdd(ht, star[si]));
44: PetscCall(DMPlexRestoreTransitiveClosure(dm, point, PETSC_FALSE, &starSize, &star));
45: PetscFunctionReturn(PETSC_SUCCESS);
46: }
48: static PetscErrorCode PCPatchConstruct_Vanka(void *vpatch, DM dm, PetscInt point, PetscHSetI ht)
49: {
50: PC_PATCH *patch = (PC_PATCH *)vpatch;
51: PetscInt starSize;
52: PetscInt *star = NULL;
53: PetscBool shouldIgnore = PETSC_FALSE;
54: PetscInt cStart, cEnd, iStart, iEnd, si;
56: PetscFunctionBegin;
57: PetscCall(PetscHSetIClear(ht));
58: /* To start with, add the point we care about */
59: PetscCall(PetscHSetIAdd(ht, point));
60: /* Should we ignore any points of a certain dimension? */
61: if (patch->vankadim >= 0) {
62: shouldIgnore = PETSC_TRUE;
63: PetscCall(DMPlexGetDepthStratum(dm, patch->vankadim, &iStart, &iEnd));
64: }
65: PetscCall(DMPlexGetHeightStratum(dm, 0, &cStart, &cEnd));
66: /* Loop over all the cells that this point connects to */
67: PetscCall(DMPlexGetTransitiveClosure(dm, point, PETSC_FALSE, &starSize, &star));
68: for (si = 0; si < starSize * 2; si += 2) {
69: const PetscInt cell = star[si];
70: PetscInt closureSize;
71: PetscInt *closure = NULL, ci;
73: if (cell < cStart || cell >= cEnd) continue;
74: /* now loop over all entities in the closure of that cell */
75: PetscCall(DMPlexGetTransitiveClosure(dm, cell, PETSC_TRUE, &closureSize, &closure));
76: for (ci = 0; ci < closureSize * 2; ci += 2) {
77: const PetscInt newpoint = closure[ci];
79: /* We've been told to ignore entities of this type.*/
80: if (shouldIgnore && newpoint >= iStart && newpoint < iEnd) continue;
81: PetscCall(PetscHSetIAdd(ht, newpoint));
82: }
83: PetscCall(DMPlexRestoreTransitiveClosure(dm, cell, PETSC_TRUE, &closureSize, &closure));
84: }
85: PetscCall(DMPlexRestoreTransitiveClosure(dm, point, PETSC_FALSE, &starSize, &star));
86: PetscFunctionReturn(PETSC_SUCCESS);
87: }
89: static PetscErrorCode PCPatchConstruct_Pardecomp(void *vpatch, DM dm, PetscInt point, PetscHSetI ht)
90: {
91: PC_PATCH *patch = (PC_PATCH *)vpatch;
92: DMLabel ghost = NULL;
93: const PetscInt *leaves = NULL;
94: PetscInt nleaves = 0, pStart, pEnd, loc;
95: PetscBool isFiredrake;
96: PetscBool flg;
97: PetscInt starSize;
98: PetscInt *star = NULL;
99: PetscInt opoint, overlapi;
101: PetscFunctionBegin;
102: PetscCall(PetscHSetIClear(ht));
104: PetscCall(DMPlexGetChart(dm, &pStart, &pEnd));
106: PetscCall(DMHasLabel(dm, "pyop2_ghost", &isFiredrake));
107: if (isFiredrake) {
108: PetscCall(DMGetLabel(dm, "pyop2_ghost", &ghost));
109: PetscCall(DMLabelCreateIndex(ghost, pStart, pEnd));
110: } else {
111: PetscSF sf;
112: PetscCall(DMGetPointSF(dm, &sf));
113: PetscCall(PetscSFGetGraph(sf, NULL, &nleaves, &leaves, NULL));
114: nleaves = PetscMax(nleaves, 0);
115: }
117: for (opoint = pStart; opoint < pEnd; ++opoint) {
118: if (ghost) PetscCall(DMLabelHasPoint(ghost, opoint, &flg));
119: else {
120: PetscCall(PetscFindInt(opoint, nleaves, leaves, &loc));
121: flg = loc >= 0 ? PETSC_TRUE : PETSC_FALSE;
122: }
123: /* Not an owned entity, don't make a cell patch. */
124: if (flg) continue;
125: PetscCall(PetscHSetIAdd(ht, opoint));
126: }
128: /* Now build the overlap for the patch */
129: for (overlapi = 0; overlapi < patch->pardecomp_overlap; ++overlapi) {
130: PetscInt index = 0;
131: PetscInt *htpoints = NULL;
132: PetscInt htsize;
133: PetscInt i;
135: PetscCall(PetscHSetIGetSize(ht, &htsize));
136: PetscCall(PetscMalloc1(htsize, &htpoints));
137: PetscCall(PetscHSetIGetElems(ht, &index, htpoints));
139: for (i = 0; i < htsize; ++i) {
140: PetscInt hpoint = htpoints[i];
141: PetscInt si;
143: PetscCall(DMPlexGetTransitiveClosure(dm, hpoint, PETSC_FALSE, &starSize, &star));
144: for (si = 0; si < starSize * 2; si += 2) {
145: const PetscInt starp = star[si];
146: PetscInt closureSize;
147: PetscInt *closure = NULL, ci;
149: /* now loop over all entities in the closure of starp */
150: PetscCall(DMPlexGetTransitiveClosure(dm, starp, PETSC_TRUE, &closureSize, &closure));
151: for (ci = 0; ci < closureSize * 2; ci += 2) {
152: const PetscInt closstarp = closure[ci];
153: PetscCall(PetscHSetIAdd(ht, closstarp));
154: }
155: PetscCall(DMPlexRestoreTransitiveClosure(dm, starp, PETSC_TRUE, &closureSize, &closure));
156: }
157: PetscCall(DMPlexRestoreTransitiveClosure(dm, hpoint, PETSC_FALSE, &starSize, &star));
158: }
159: PetscCall(PetscFree(htpoints));
160: }
161: PetscFunctionReturn(PETSC_SUCCESS);
162: }
164: /* The user's already set the patches in patch->userIS. Build the hash tables */
165: static PetscErrorCode PCPatchConstruct_User(void *vpatch, DM dm, PetscInt point, PetscHSetI ht)
166: {
167: PC_PATCH *patch = (PC_PATCH *)vpatch;
168: IS patchis = patch->userIS[point];
169: PetscInt n;
170: const PetscInt *patchdata;
171: PetscInt pStart, pEnd, i;
173: PetscFunctionBegin;
174: PetscCall(PetscHSetIClear(ht));
175: PetscCall(DMPlexGetChart(dm, &pStart, &pEnd));
176: PetscCall(ISGetLocalSize(patchis, &n));
177: PetscCall(ISGetIndices(patchis, &patchdata));
178: for (i = 0; i < n; ++i) {
179: const PetscInt ownedpoint = patchdata[i];
181: PetscCheck(ownedpoint >= pStart && ownedpoint < pEnd, PetscObjectComm((PetscObject)dm), PETSC_ERR_ARG_OUTOFRANGE, "Mesh point %" PetscInt_FMT " was not in [%" PetscInt_FMT ", %" PetscInt_FMT ")", ownedpoint, pStart, pEnd);
182: PetscCall(PetscHSetIAdd(ht, ownedpoint));
183: }
184: PetscCall(ISRestoreIndices(patchis, &patchdata));
185: PetscFunctionReturn(PETSC_SUCCESS);
186: }
188: static PetscErrorCode PCPatchCreateDefaultSF_Private(PC pc, PetscInt n, const PetscSF *sf, const PetscInt *bs)
189: {
190: PC_PATCH *patch = (PC_PATCH *)pc->data;
192: PetscFunctionBegin;
193: if (n == 1 && bs[0] == 1) {
194: patch->sectionSF = sf[0];
195: PetscCall(PetscObjectReference((PetscObject)patch->sectionSF));
196: } else {
197: PetscInt allRoots = 0, allLeaves = 0;
198: PetscInt leafOffset = 0;
199: PetscInt *ilocal = NULL;
200: PetscSFNode *iremote = NULL;
201: PetscInt *remoteOffsets = NULL;
202: PetscInt index = 0;
203: PetscHMapI rankToIndex;
204: PetscInt numRanks = 0;
205: PetscSFNode *remote = NULL;
206: PetscSF rankSF;
207: PetscInt *ranks = NULL;
208: PetscInt *offsets = NULL;
209: MPI_Datatype contig;
210: PetscHSetI ranksUniq;
211: PetscMPIInt in;
213: /* First figure out how many dofs there are in the concatenated numbering.
214: allRoots: number of owned global dofs;
215: allLeaves: number of visible dofs (global + ghosted).
216: */
217: for (PetscInt i = 0; i < n; ++i) {
218: PetscInt nroots, nleaves;
220: PetscCall(PetscSFGetGraph(sf[i], &nroots, &nleaves, NULL, NULL));
221: allRoots += nroots * bs[i];
222: allLeaves += nleaves * bs[i];
223: }
224: PetscCall(PetscMalloc1(allLeaves, &ilocal));
225: PetscCall(PetscMalloc1(allLeaves, &iremote));
226: /* Now build an SF that just contains process connectivity. */
227: PetscCall(PetscHSetICreate(&ranksUniq));
228: for (PetscInt i = 0; i < n; ++i) {
229: const PetscMPIInt *ranks = NULL;
230: PetscMPIInt nranks;
232: PetscCall(PetscSFSetUp(sf[i]));
233: PetscCall(PetscSFGetRootRanks(sf[i], &nranks, &ranks, NULL, NULL, NULL));
234: /* These are all the ranks who communicate with me. */
235: for (PetscMPIInt j = 0; j < nranks; ++j) PetscCall(PetscHSetIAdd(ranksUniq, (PetscInt)ranks[j]));
236: }
237: PetscCall(PetscHSetIGetSize(ranksUniq, &numRanks));
238: PetscCall(PetscMalloc1(numRanks, &remote));
239: PetscCall(PetscMalloc1(numRanks, &ranks));
240: PetscCall(PetscHSetIGetElems(ranksUniq, &index, ranks));
242: PetscCall(PetscHMapICreate(&rankToIndex));
243: for (PetscInt i = 0; i < numRanks; ++i) {
244: remote[i].rank = (PetscMPIInt)ranks[i];
245: remote[i].index = 0;
246: PetscCall(PetscHMapISet(rankToIndex, ranks[i], i));
247: }
248: PetscCall(PetscFree(ranks));
249: PetscCall(PetscHSetIDestroy(&ranksUniq));
250: PetscCall(PetscSFCreate(PetscObjectComm((PetscObject)pc), &rankSF));
251: PetscCall(PetscSFSetGraph(rankSF, 1, numRanks, NULL, PETSC_OWN_POINTER, remote, PETSC_OWN_POINTER));
252: PetscCall(PetscSFSetUp(rankSF));
253: /* OK, use it to communicate the root offset on the remote processes for each subspace. */
254: PetscCall(PetscMalloc1(n, &offsets));
255: PetscCall(PetscMalloc1(n * numRanks, &remoteOffsets));
257: offsets[0] = 0;
258: for (PetscInt i = 1; i < n; ++i) {
259: PetscInt nroots;
261: PetscCall(PetscSFGetGraph(sf[i - 1], &nroots, NULL, NULL, NULL));
262: offsets[i] = offsets[i - 1] + nroots * bs[i - 1];
263: }
264: /* Offsets are the offsets on the current process of the global dof numbering for the subspaces. */
265: PetscCall(PetscMPIIntCast(n, &in));
266: PetscCallMPI(MPI_Type_contiguous(in, MPIU_INT, &contig));
267: PetscCallMPI(MPI_Type_commit(&contig));
269: PetscCall(PetscSFBcastBegin(rankSF, contig, offsets, remoteOffsets, MPI_REPLACE));
270: PetscCall(PetscSFBcastEnd(rankSF, contig, offsets, remoteOffsets, MPI_REPLACE));
271: PetscCallMPI(MPI_Type_free(&contig));
272: PetscCall(PetscFree(offsets));
273: PetscCall(PetscSFDestroy(&rankSF));
274: /* Now remoteOffsets contains the offsets on the remote
275: processes who communicate with me. So now we can
276: concatenate the list of SFs into a single one. */
277: index = 0;
278: for (PetscInt i = 0; i < n; ++i) {
279: const PetscSFNode *remote = NULL;
280: const PetscInt *local = NULL;
281: PetscInt nroots, nleaves, j;
283: PetscCall(PetscSFGetGraph(sf[i], &nroots, &nleaves, &local, &remote));
284: for (j = 0; j < nleaves; ++j) {
285: PetscInt rank = remote[j].rank;
286: PetscInt idx, rootOffset, k;
288: PetscCall(PetscHMapIGet(rankToIndex, rank, &idx));
289: PetscCheck(idx != -1, PETSC_COMM_SELF, PETSC_ERR_ARG_WRONGSTATE, "Didn't find rank, huh?");
290: /* Offset on given rank for ith subspace */
291: rootOffset = remoteOffsets[n * idx + i];
292: for (k = 0; k < bs[i]; ++k) {
293: ilocal[index] = (local ? local[j] : j) * bs[i] + k + leafOffset;
294: iremote[index].rank = remote[j].rank;
295: iremote[index].index = remote[j].index * bs[i] + k + rootOffset;
296: ++index;
297: }
298: }
299: leafOffset += nleaves * bs[i];
300: }
301: PetscCall(PetscHMapIDestroy(&rankToIndex));
302: PetscCall(PetscFree(remoteOffsets));
303: PetscCall(PetscSFCreate(PetscObjectComm((PetscObject)pc), &patch->sectionSF));
304: PetscCall(PetscSFSetGraph(patch->sectionSF, allRoots, allLeaves, ilocal, PETSC_OWN_POINTER, iremote, PETSC_OWN_POINTER));
305: }
306: PetscFunctionReturn(PETSC_SUCCESS);
307: }
309: /* TODO: Docs */
310: static PetscErrorCode PCPatchGetIgnoreDim(PC pc, PetscInt *dim)
311: {
312: PC_PATCH *patch = (PC_PATCH *)pc->data;
314: PetscFunctionBegin;
315: *dim = patch->ignoredim;
316: PetscFunctionReturn(PETSC_SUCCESS);
317: }
319: /* TODO: Docs */
320: PetscErrorCode PCPatchSetSaveOperators(PC pc, PetscBool flg)
321: {
322: PC_PATCH *patch = (PC_PATCH *)pc->data;
324: PetscFunctionBegin;
325: patch->save_operators = flg;
326: PetscFunctionReturn(PETSC_SUCCESS);
327: }
329: /* TODO: Docs */
330: PetscErrorCode PCPatchGetSaveOperators(PC pc, PetscBool *flg)
331: {
332: PC_PATCH *patch = (PC_PATCH *)pc->data;
334: PetscFunctionBegin;
335: *flg = patch->save_operators;
336: PetscFunctionReturn(PETSC_SUCCESS);
337: }
339: /* TODO: Docs */
340: PetscErrorCode PCPatchSetPrecomputeElementTensors(PC pc, PetscBool flg)
341: {
342: PC_PATCH *patch = (PC_PATCH *)pc->data;
344: PetscFunctionBegin;
345: patch->precomputeElementTensors = flg;
346: PetscFunctionReturn(PETSC_SUCCESS);
347: }
349: /* TODO: Docs */
350: PetscErrorCode PCPatchGetPrecomputeElementTensors(PC pc, PetscBool *flg)
351: {
352: PC_PATCH *patch = (PC_PATCH *)pc->data;
354: PetscFunctionBegin;
355: *flg = patch->precomputeElementTensors;
356: PetscFunctionReturn(PETSC_SUCCESS);
357: }
359: /* TODO: Docs */
360: PetscErrorCode PCPatchSetPartitionOfUnity(PC pc, PetscBool flg)
361: {
362: PC_PATCH *patch = (PC_PATCH *)pc->data;
364: PetscFunctionBegin;
365: patch->partition_of_unity = flg;
366: PetscFunctionReturn(PETSC_SUCCESS);
367: }
369: /* TODO: Docs */
370: PetscErrorCode PCPatchGetPartitionOfUnity(PC pc, PetscBool *flg)
371: {
372: PC_PATCH *patch = (PC_PATCH *)pc->data;
374: PetscFunctionBegin;
375: *flg = patch->partition_of_unity;
376: PetscFunctionReturn(PETSC_SUCCESS);
377: }
379: /* TODO: Docs */
380: static PetscErrorCode PCPatchSetLocalComposition(PC pc, PCCompositeType type)
381: {
382: PC_PATCH *patch = (PC_PATCH *)pc->data;
384: PetscFunctionBegin;
385: PetscCheck(type == PC_COMPOSITE_ADDITIVE || type == PC_COMPOSITE_MULTIPLICATIVE, PetscObjectComm((PetscObject)pc), PETSC_ERR_SUP, "Only supports additive or multiplicative as the local type");
386: patch->local_composition_type = type;
387: PetscFunctionReturn(PETSC_SUCCESS);
388: }
390: /* TODO: Docs */
391: PetscErrorCode PCPatchGetSubKSP(PC pc, PetscInt *npatch, KSP **ksp)
392: {
393: PC_PATCH *patch = (PC_PATCH *)pc->data;
395: PetscFunctionBegin;
396: PetscCheck(pc->setupcalled, PetscObjectComm((PetscObject)pc), PETSC_ERR_ORDER, "Need to call PCSetUp() on PC (or KSPSetUp() on the outer KSP object) before calling here");
397: PetscCall(PetscMalloc1(patch->npatch, ksp));
398: for (PetscInt i = 0; i < patch->npatch; ++i) (*ksp)[i] = (KSP)patch->solver[i];
399: if (npatch) *npatch = patch->npatch;
400: PetscFunctionReturn(PETSC_SUCCESS);
401: }
403: /* TODO: Docs */
404: PetscErrorCode PCPatchSetSubMatType(PC pc, MatType sub_mat_type)
405: {
406: PC_PATCH *patch = (PC_PATCH *)pc->data;
408: PetscFunctionBegin;
409: if (patch->sub_mat_type) PetscCall(PetscFree(patch->sub_mat_type));
410: PetscCall(PetscStrallocpy(sub_mat_type, (char **)&patch->sub_mat_type));
411: PetscFunctionReturn(PETSC_SUCCESS);
412: }
414: /* TODO: Docs */
415: PetscErrorCode PCPatchGetSubMatType(PC pc, MatType *sub_mat_type)
416: {
417: PC_PATCH *patch = (PC_PATCH *)pc->data;
419: PetscFunctionBegin;
420: *sub_mat_type = patch->sub_mat_type;
421: PetscFunctionReturn(PETSC_SUCCESS);
422: }
424: /* TODO: Docs */
425: PetscErrorCode PCPatchSetCellNumbering(PC pc, PetscSection cellNumbering)
426: {
427: PC_PATCH *patch = (PC_PATCH *)pc->data;
429: PetscFunctionBegin;
430: patch->cellNumbering = cellNumbering;
431: PetscCall(PetscObjectReference((PetscObject)cellNumbering));
432: PetscFunctionReturn(PETSC_SUCCESS);
433: }
435: /* TODO: Docs */
436: PetscErrorCode PCPatchGetCellNumbering(PC pc, PetscSection *cellNumbering)
437: {
438: PC_PATCH *patch = (PC_PATCH *)pc->data;
440: PetscFunctionBegin;
441: *cellNumbering = patch->cellNumbering;
442: PetscFunctionReturn(PETSC_SUCCESS);
443: }
445: /* TODO: Docs */
446: PetscErrorCode PCPatchSetConstructType(PC pc, PCPatchConstructType ctype, PetscErrorCode (*func)(PC, PetscInt *, IS **, IS *, void *), void *ctx)
447: {
448: PC_PATCH *patch = (PC_PATCH *)pc->data;
450: PetscFunctionBegin;
451: patch->ctype = ctype;
452: switch (ctype) {
453: case PC_PATCH_STAR:
454: patch->user_patches = PETSC_FALSE;
455: patch->patchconstructop = PCPatchConstruct_Star;
456: break;
457: case PC_PATCH_VANKA:
458: patch->user_patches = PETSC_FALSE;
459: patch->patchconstructop = PCPatchConstruct_Vanka;
460: break;
461: case PC_PATCH_PARDECOMP:
462: patch->user_patches = PETSC_FALSE;
463: patch->patchconstructop = PCPatchConstruct_Pardecomp;
464: break;
465: case PC_PATCH_USER:
466: case PC_PATCH_PYTHON:
467: patch->user_patches = PETSC_TRUE;
468: patch->patchconstructop = PCPatchConstruct_User;
469: if (func) {
470: patch->userpatchconstructionop = func;
471: patch->userpatchconstructctx = ctx;
472: }
473: break;
474: default:
475: SETERRQ(PetscObjectComm((PetscObject)pc), PETSC_ERR_USER, "Unknown patch construction type %" PetscInt_FMT, (PetscInt)patch->ctype);
476: }
477: PetscFunctionReturn(PETSC_SUCCESS);
478: }
480: /* TODO: Docs */
481: PetscErrorCode PCPatchGetConstructType(PC pc, PCPatchConstructType *ctype, PetscErrorCode (**func)(PC, PetscInt *, IS **, IS *, void *), void **ctx)
482: {
483: PC_PATCH *patch = (PC_PATCH *)pc->data;
485: PetscFunctionBegin;
486: *ctype = patch->ctype;
487: switch (patch->ctype) {
488: case PC_PATCH_STAR:
489: case PC_PATCH_VANKA:
490: case PC_PATCH_PARDECOMP:
491: break;
492: case PC_PATCH_USER:
493: case PC_PATCH_PYTHON:
494: *func = patch->userpatchconstructionop;
495: *ctx = patch->userpatchconstructctx;
496: break;
497: default:
498: SETERRQ(PetscObjectComm((PetscObject)pc), PETSC_ERR_USER, "Unknown patch construction type %" PetscInt_FMT, (PetscInt)patch->ctype);
499: }
500: PetscFunctionReturn(PETSC_SUCCESS);
501: }
503: /* TODO: Docs */
504: PetscErrorCode PCPatchSetDiscretisationInfo(PC pc, PetscInt nsubspaces, DM *dms, PetscInt *bs, PetscInt *nodesPerCell, const PetscInt **cellNodeMap, const PetscInt *subspaceOffsets, PetscInt numGhostBcs, const PetscInt *ghostBcNodes, PetscInt numGlobalBcs, const PetscInt *globalBcNodes)
505: {
506: PC_PATCH *patch = (PC_PATCH *)pc->data;
507: DM dm, plex;
508: PetscSF *sfs;
509: PetscInt cStart, cEnd, i, j;
511: PetscFunctionBegin;
512: PetscCall(PCGetDM(pc, &dm));
513: PetscCall(DMConvert(dm, DMPLEX, &plex));
514: dm = plex;
515: PetscCall(DMPlexGetHeightStratum(dm, 0, &cStart, &cEnd));
516: PetscCall(PetscMalloc1(nsubspaces, &sfs));
517: PetscCall(PetscMalloc1(nsubspaces, &patch->dofSection));
518: PetscCall(PetscMalloc1(nsubspaces, &patch->bs));
519: PetscCall(PetscMalloc1(nsubspaces, &patch->nodesPerCell));
520: PetscCall(PetscMalloc1(nsubspaces, &patch->cellNodeMap));
521: PetscCall(PetscMalloc1(nsubspaces + 1, &patch->subspaceOffsets));
523: patch->nsubspaces = nsubspaces;
524: patch->totalDofsPerCell = 0;
525: for (i = 0; i < nsubspaces; ++i) {
526: PetscCall(DMGetLocalSection(dms[i], &patch->dofSection[i]));
527: PetscCall(PetscObjectReference((PetscObject)patch->dofSection[i]));
528: PetscCall(DMGetSectionSF(dms[i], &sfs[i]));
529: patch->bs[i] = bs[i];
530: patch->nodesPerCell[i] = nodesPerCell[i];
531: patch->totalDofsPerCell += nodesPerCell[i] * bs[i];
532: PetscCall(PetscMalloc1((cEnd - cStart) * nodesPerCell[i], &patch->cellNodeMap[i]));
533: for (j = 0; j < (cEnd - cStart) * nodesPerCell[i]; ++j) patch->cellNodeMap[i][j] = cellNodeMap[i][j];
534: patch->subspaceOffsets[i] = subspaceOffsets[i];
535: }
536: PetscCall(PCPatchCreateDefaultSF_Private(pc, nsubspaces, sfs, patch->bs));
537: PetscCall(PetscFree(sfs));
539: patch->subspaceOffsets[nsubspaces] = subspaceOffsets[nsubspaces];
540: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numGhostBcs, ghostBcNodes, PETSC_COPY_VALUES, &patch->ghostBcNodes));
541: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numGlobalBcs, globalBcNodes, PETSC_COPY_VALUES, &patch->globalBcNodes));
542: PetscCall(DMDestroy(&dm));
543: PetscFunctionReturn(PETSC_SUCCESS);
544: }
546: /* TODO: Docs */
547: static PetscErrorCode PCPatchSetDiscretisationInfoCombined(PC pc, DM dm, PetscInt *nodesPerCell, const PetscInt **cellNodeMap, PetscInt numGhostBcs, const PetscInt *ghostBcNodes, PetscInt numGlobalBcs, const PetscInt *globalBcNodes)
548: {
549: PC_PATCH *patch = (PC_PATCH *)pc->data;
550: PetscInt cStart, cEnd, i, j;
552: PetscFunctionBegin;
553: patch->combined = PETSC_TRUE;
554: PetscCall(DMPlexGetHeightStratum(dm, 0, &cStart, &cEnd));
555: PetscCall(DMGetNumFields(dm, &patch->nsubspaces));
556: PetscCall(PetscCalloc1(patch->nsubspaces, &patch->dofSection));
557: PetscCall(PetscMalloc1(patch->nsubspaces, &patch->bs));
558: PetscCall(PetscMalloc1(patch->nsubspaces, &patch->nodesPerCell));
559: PetscCall(PetscMalloc1(patch->nsubspaces, &patch->cellNodeMap));
560: PetscCall(PetscCalloc1(patch->nsubspaces + 1, &patch->subspaceOffsets));
561: PetscCall(DMGetLocalSection(dm, &patch->dofSection[0]));
562: PetscCall(PetscObjectReference((PetscObject)patch->dofSection[0]));
563: PetscCall(PetscSectionGetStorageSize(patch->dofSection[0], &patch->subspaceOffsets[patch->nsubspaces]));
564: patch->totalDofsPerCell = 0;
565: for (i = 0; i < patch->nsubspaces; ++i) {
566: patch->bs[i] = 1;
567: patch->nodesPerCell[i] = nodesPerCell[i];
568: patch->totalDofsPerCell += nodesPerCell[i];
569: PetscCall(PetscMalloc1((cEnd - cStart) * nodesPerCell[i], &patch->cellNodeMap[i]));
570: for (j = 0; j < (cEnd - cStart) * nodesPerCell[i]; ++j) patch->cellNodeMap[i][j] = cellNodeMap[i][j];
571: }
572: PetscCall(DMGetSectionSF(dm, &patch->sectionSF));
573: PetscCall(PetscObjectReference((PetscObject)patch->sectionSF));
574: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numGhostBcs, ghostBcNodes, PETSC_COPY_VALUES, &patch->ghostBcNodes));
575: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numGlobalBcs, globalBcNodes, PETSC_COPY_VALUES, &patch->globalBcNodes));
576: PetscFunctionReturn(PETSC_SUCCESS);
577: }
579: /*@C
580: PCPatchSetComputeFunction - Set the callback function used to compute patch residuals
582: Logically Collective
584: Input Parameters:
585: + pc - The `PC`
586: . func - The callback function
587: - ctx - The user context
589: Calling sequence of `func`:
590: + pc - The `PC`
591: . point - The point
592: . x - The input solution (not used in linear problems)
593: . f - The patch residual vector
594: . cellIS - An array of the cell numbers
595: . n - The size of `dofsArray`
596: . dofsArray - The dofmap for the dofs to be solved for
597: . dofsArrayWithAll - The dofmap for all dofs on the patch
598: - ctx - The user context
600: Level: advanced
602: Note:
603: The entries of `f` (the output residual vector) have been set to zero before the call.
605: .seealso: [](ch_ksp), `PCPatchSetComputeOperator()`, `PCPatchGetComputeOperator()`, `PCPatchSetDiscretisationInfo()`, `PCPatchSetComputeFunctionInteriorFacets()`
606: @*/
607: PetscErrorCode PCPatchSetComputeFunction(PC pc, PetscErrorCode (*func)(PC pc, PetscInt point, Vec x, Vec f, IS cellIS, PetscInt n, const PetscInt *dofsArray, const PetscInt *dofsArrayWithAll, void *ctx), void *ctx)
608: {
609: PC_PATCH *patch = (PC_PATCH *)pc->data;
611: PetscFunctionBegin;
612: patch->usercomputef = func;
613: patch->usercomputefctx = ctx;
614: PetscFunctionReturn(PETSC_SUCCESS);
615: }
617: /*@C
618: PCPatchSetComputeFunctionInteriorFacets - Set the callback function used to compute facet integrals for patch residuals
620: Logically Collective
622: Input Parameters:
623: + pc - The `PC`
624: . func - The callback function
625: - ctx - The user context
627: Calling sequence of `func`:
628: + pc - The `PC`
629: . point - The point
630: . x - The input solution (not used in linear problems)
631: . f - The patch residual vector
632: . facetIS - An array of the facet numbers
633: . n - The size of `dofsArray`
634: . dofsArray - The dofmap for the dofs to be solved for
635: . dofsArrayWithAll - The dofmap for all dofs on the patch
636: - ctx - The user context
638: Level: advanced
640: Note:
641: The entries of `f` (the output residual vector) have been set to zero before the call.
643: .seealso: [](ch_ksp), `PCPatchSetComputeOperator()`, `PCPatchGetComputeOperator()`, `PCPatchSetDiscretisationInfo()`, `PCPatchSetComputeFunction()`
644: @*/
645: PetscErrorCode PCPatchSetComputeFunctionInteriorFacets(PC pc, PetscErrorCode (*func)(PC pc, PetscInt point, Vec x, Vec f, IS facetIS, PetscInt n, const PetscInt *dofsArray, const PetscInt *dofsArrayWithAll, void *ctx), void *ctx)
646: {
647: PC_PATCH *patch = (PC_PATCH *)pc->data;
649: PetscFunctionBegin;
650: patch->usercomputefintfacet = func;
651: patch->usercomputefintfacetctx = ctx;
652: PetscFunctionReturn(PETSC_SUCCESS);
653: }
655: /*@C
656: PCPatchSetComputeOperator - Set the callback function used to compute patch matrices
658: Logically Collective
660: Input Parameters:
661: + pc - The `PC`
662: . func - The callback function
663: - ctx - The user context
665: Calling sequence of `func`:
666: + pc - The `PC`
667: . point - The point
668: . x - The input solution (not used in linear problems)
669: . mat - The patch matrix
670: . facetIS - An array of the cell numbers
671: . n - The size of `dofsArray`
672: . dofsArray - The dofmap for the dofs to be solved for
673: . dofsArrayWithAll - The dofmap for all dofs on the patch
674: - ctx - The user context
676: Level: advanced
678: Note:
679: The matrix entries have been set to zero before the call.
681: .seealso: [](ch_ksp), `PCPatchGetComputeOperator()`, `PCPatchSetComputeFunction()`, `PCPatchSetDiscretisationInfo()`
682: @*/
683: PetscErrorCode PCPatchSetComputeOperator(PC pc, PetscErrorCode (*func)(PC pc, PetscInt point, Vec x, Mat mat, IS facetIS, PetscInt n, const PetscInt *dofsArray, const PetscInt *dofsArrayWithAll, void *ctx), void *ctx)
684: {
685: PC_PATCH *patch = (PC_PATCH *)pc->data;
687: PetscFunctionBegin;
688: patch->usercomputeop = func;
689: patch->usercomputeopctx = ctx;
690: PetscFunctionReturn(PETSC_SUCCESS);
691: }
693: /*@C
694: PCPatchSetComputeOperatorInteriorFacets - Set the callback function used to compute facet integrals for patch matrices
696: Logically Collective
698: Input Parameters:
699: + pc - The `PC`
700: . func - The callback function
701: - ctx - The user context
703: Calling sequence of `func`:
704: + pc - The `PC`
705: . point - The point
706: . x - The input solution (not used in linear problems)
707: . mat - The patch matrix
708: . facetIS - An array of the facet numbers
709: . n - The size of `dofsArray`
710: . dofsArray - The dofmap for the dofs to be solved for
711: . dofsArrayWithAll - The dofmap for all dofs on the patch
712: - ctx - The user context
714: Level: advanced
716: Note:
717: The matrix entries have been set to zero before the call.
719: .seealso: [](ch_ksp), `PCPatchGetComputeOperator()`, `PCPatchSetComputeFunction()`, `PCPatchSetDiscretisationInfo()`
720: @*/
721: PetscErrorCode PCPatchSetComputeOperatorInteriorFacets(PC pc, PetscErrorCode (*func)(PC pc, PetscInt point, Vec x, Mat mat, IS facetIS, PetscInt n, const PetscInt *dofsArray, const PetscInt *dofsArrayWithAll, void *ctx), void *ctx)
722: {
723: PC_PATCH *patch = (PC_PATCH *)pc->data;
725: PetscFunctionBegin;
726: patch->usercomputeopintfacet = func;
727: patch->usercomputeopintfacetctx = ctx;
728: PetscFunctionReturn(PETSC_SUCCESS);
729: }
731: /* On entry, ht contains the topological entities whose dofs we are responsible for solving for;
732: on exit, cht contains all the topological entities we need to compute their residuals.
733: In full generality this should incorporate knowledge of the sparsity pattern of the matrix;
734: here we assume a standard FE sparsity pattern.*/
735: /* TODO: Use DMPlexGetAdjacency() */
736: static PetscErrorCode PCPatchCompleteCellPatch(PC pc, PetscHSetI ht, PetscHSetI cht)
737: {
738: DM dm, plex;
739: PC_PATCH *patch = (PC_PATCH *)pc->data;
740: PetscHashIter hi;
741: PetscInt point;
742: PetscInt *star = NULL, *closure = NULL;
743: PetscInt ignoredim, iStart = 0, iEnd = -1, starSize, closureSize, si, ci;
744: PetscInt *fStar = NULL, *fClosure = NULL;
745: PetscInt fBegin, fEnd, fsi, fci, fStarSize, fClosureSize;
747: PetscFunctionBegin;
748: PetscCall(PCGetDM(pc, &dm));
749: PetscCall(DMConvert(dm, DMPLEX, &plex));
750: dm = plex;
751: PetscCall(DMPlexGetHeightStratum(dm, 1, &fBegin, &fEnd));
752: PetscCall(PCPatchGetIgnoreDim(pc, &ignoredim));
753: if (ignoredim >= 0) PetscCall(DMPlexGetDepthStratum(dm, ignoredim, &iStart, &iEnd));
754: PetscCall(PetscHSetIClear(cht));
755: PetscHashIterBegin(ht, hi);
756: while (!PetscHashIterAtEnd(ht, hi)) {
757: PetscHashIterGetKey(ht, hi, point);
758: PetscHashIterNext(ht, hi);
760: /* Loop over all the cells that this point connects to */
761: PetscCall(DMPlexGetTransitiveClosure(dm, point, PETSC_FALSE, &starSize, &star));
762: for (si = 0; si < starSize * 2; si += 2) {
763: const PetscInt ownedpoint = star[si];
764: /* TODO Check for point in cht before running through closure again */
765: /* now loop over all entities in the closure of that cell */
766: PetscCall(DMPlexGetTransitiveClosure(dm, ownedpoint, PETSC_TRUE, &closureSize, &closure));
767: for (ci = 0; ci < closureSize * 2; ci += 2) {
768: const PetscInt seenpoint = closure[ci];
769: if (ignoredim >= 0 && seenpoint >= iStart && seenpoint < iEnd) continue;
770: PetscCall(PetscHSetIAdd(cht, seenpoint));
771: /* Facet integrals couple dofs across facets, so in that case for each of
772: the facets we need to add all dofs on the other side of the facet to
773: the seen dofs. */
774: if (patch->usercomputeopintfacet) {
775: if (fBegin <= seenpoint && seenpoint < fEnd) {
776: PetscCall(DMPlexGetTransitiveClosure(dm, seenpoint, PETSC_FALSE, &fStarSize, &fStar));
777: for (fsi = 0; fsi < fStarSize * 2; fsi += 2) {
778: PetscCall(DMPlexGetTransitiveClosure(dm, fStar[fsi], PETSC_TRUE, &fClosureSize, &fClosure));
779: for (fci = 0; fci < fClosureSize * 2; fci += 2) PetscCall(PetscHSetIAdd(cht, fClosure[fci]));
780: PetscCall(DMPlexRestoreTransitiveClosure(dm, fStar[fsi], PETSC_TRUE, NULL, &fClosure));
781: }
782: PetscCall(DMPlexRestoreTransitiveClosure(dm, seenpoint, PETSC_FALSE, NULL, &fStar));
783: }
784: }
785: }
786: PetscCall(DMPlexRestoreTransitiveClosure(dm, ownedpoint, PETSC_TRUE, NULL, &closure));
787: }
788: PetscCall(DMPlexRestoreTransitiveClosure(dm, point, PETSC_FALSE, NULL, &star));
789: }
790: PetscCall(DMDestroy(&dm));
791: PetscFunctionReturn(PETSC_SUCCESS);
792: }
794: static PetscErrorCode PCPatchGetGlobalDofs(PC pc, PetscSection dofSection[], PetscInt f, PetscBool combined, PetscInt p, PetscInt *dof, PetscInt *off)
795: {
796: PetscFunctionBegin;
797: if (combined) {
798: if (f < 0) {
799: if (dof) PetscCall(PetscSectionGetDof(dofSection[0], p, dof));
800: if (off) PetscCall(PetscSectionGetOffset(dofSection[0], p, off));
801: } else {
802: if (dof) PetscCall(PetscSectionGetFieldDof(dofSection[0], p, f, dof));
803: if (off) PetscCall(PetscSectionGetFieldOffset(dofSection[0], p, f, off));
804: }
805: } else {
806: if (f < 0) {
807: PC_PATCH *patch = (PC_PATCH *)pc->data;
808: PetscInt fdof, g;
810: if (dof) {
811: *dof = 0;
812: for (g = 0; g < patch->nsubspaces; ++g) {
813: PetscCall(PetscSectionGetDof(dofSection[g], p, &fdof));
814: *dof += fdof;
815: }
816: }
817: if (off) {
818: *off = 0;
819: for (g = 0; g < patch->nsubspaces; ++g) {
820: PetscCall(PetscSectionGetOffset(dofSection[g], p, &fdof));
821: *off += fdof;
822: }
823: }
824: } else {
825: if (dof) PetscCall(PetscSectionGetDof(dofSection[f], p, dof));
826: if (off) PetscCall(PetscSectionGetOffset(dofSection[f], p, off));
827: }
828: }
829: PetscFunctionReturn(PETSC_SUCCESS);
830: }
832: /* Given a hash table with a set of topological entities (pts), compute the degrees of
833: freedom in global concatenated numbering on those entities.
834: For Vanka smoothing, this needs to do something special: ignore dofs of the
835: constraint subspace on entities that aren't the base entity we're building the patch
836: around. */
837: static PetscErrorCode PCPatchGetPointDofs(PC pc, PetscHSetI pts, PetscHSetI dofs, PetscInt base, PetscHSetI *subspaces_to_exclude)
838: {
839: PC_PATCH *patch = (PC_PATCH *)pc->data;
840: PetscHashIter hi;
841: PetscInt ldof, loff;
842: PetscInt k, p;
844: PetscFunctionBegin;
845: PetscCall(PetscHSetIClear(dofs));
846: for (k = 0; k < patch->nsubspaces; ++k) {
847: PetscInt subspaceOffset = patch->subspaceOffsets[k];
848: PetscInt bs = patch->bs[k];
849: PetscInt j, l;
851: if (subspaces_to_exclude != NULL) {
852: PetscBool should_exclude_k = PETSC_FALSE;
853: PetscCall(PetscHSetIHas(*subspaces_to_exclude, k, &should_exclude_k));
854: if (should_exclude_k) {
855: /* only get this subspace dofs at the base entity, not any others */
856: PetscCall(PCPatchGetGlobalDofs(pc, patch->dofSection, k, patch->combined, base, &ldof, &loff));
857: if (0 == ldof) continue;
858: for (j = loff; j < ldof + loff; ++j) {
859: for (l = 0; l < bs; ++l) {
860: PetscInt dof = bs * j + l + subspaceOffset;
861: PetscCall(PetscHSetIAdd(dofs, dof));
862: }
863: }
864: continue; /* skip the other dofs of this subspace */
865: }
866: }
868: PetscHashIterBegin(pts, hi);
869: while (!PetscHashIterAtEnd(pts, hi)) {
870: PetscHashIterGetKey(pts, hi, p);
871: PetscHashIterNext(pts, hi);
872: PetscCall(PCPatchGetGlobalDofs(pc, patch->dofSection, k, patch->combined, p, &ldof, &loff));
873: if (0 == ldof) continue;
874: for (j = loff; j < ldof + loff; ++j) {
875: for (l = 0; l < bs; ++l) {
876: PetscInt dof = bs * j + l + subspaceOffset;
877: PetscCall(PetscHSetIAdd(dofs, dof));
878: }
879: }
880: }
881: }
882: PetscFunctionReturn(PETSC_SUCCESS);
883: }
885: /* Given two hash tables A and B, compute the keys in B that are not in A, and put them in C */
886: static PetscErrorCode PCPatchComputeSetDifference_Private(PetscHSetI A, PetscHSetI B, PetscHSetI C)
887: {
888: PetscHashIter hi;
889: PetscInt key;
890: PetscBool flg;
892: PetscFunctionBegin;
893: PetscCall(PetscHSetIClear(C));
894: PetscHashIterBegin(B, hi);
895: while (!PetscHashIterAtEnd(B, hi)) {
896: PetscHashIterGetKey(B, hi, key);
897: PetscHashIterNext(B, hi);
898: PetscCall(PetscHSetIHas(A, key, &flg));
899: if (!flg) PetscCall(PetscHSetIAdd(C, key));
900: }
901: PetscFunctionReturn(PETSC_SUCCESS);
902: }
904: // PetscClangLinter pragma disable: -fdoc-sowing-chars
905: /*
906: PCPatchCreateCellPatches - create patches.
908: Input Parameter:
909: . dm - The DMPlex object defining the mesh
911: Output Parameters:
912: + cellCounts - Section with counts of cells around each vertex
913: . cells - IS of the cell point indices of cells in each patch
914: . pointCounts - Section with counts of cells around each vertex
915: - point - IS of the cell point indices of cells in each patch
916: */
917: static PetscErrorCode PCPatchCreateCellPatches(PC pc)
918: {
919: PC_PATCH *patch = (PC_PATCH *)pc->data;
920: DMLabel ghost = NULL;
921: DM dm, plex;
922: PetscHSetI ht = NULL, cht = NULL;
923: PetscSection cellCounts, pointCounts, intFacetCounts, extFacetCounts;
924: PetscInt *cellsArray, *pointsArray, *intFacetsArray, *extFacetsArray, *intFacetsToPatchCell;
925: PetscInt numCells, numPoints, numIntFacets, numExtFacets;
926: const PetscInt *leaves;
927: PetscInt nleaves, pStart, pEnd, cStart, cEnd, vStart, vEnd, fStart, fEnd, v;
928: PetscBool isFiredrake;
930: PetscFunctionBegin;
931: /* Used to keep track of the cells in the patch. */
932: PetscCall(PetscHSetICreate(&ht));
933: PetscCall(PetscHSetICreate(&cht));
935: PetscCall(PCGetDM(pc, &dm));
936: PetscCheck(dm, PetscObjectComm((PetscObject)pc), PETSC_ERR_ARG_WRONGSTATE, "DM not yet set on patch PC");
937: PetscCall(DMConvert(dm, DMPLEX, &plex));
938: dm = plex;
939: PetscCall(DMPlexGetChart(dm, &pStart, &pEnd));
940: PetscCall(DMPlexGetHeightStratum(dm, 0, &cStart, &cEnd));
942: if (patch->user_patches) {
943: PetscCall(patch->userpatchconstructionop(pc, &patch->npatch, &patch->userIS, &patch->iterationSet, patch->userpatchconstructctx));
944: vStart = 0;
945: vEnd = patch->npatch;
946: } else if (patch->ctype == PC_PATCH_PARDECOMP) {
947: vStart = 0;
948: vEnd = 1;
949: } else if (patch->codim < 0) {
950: if (patch->dim < 0) PetscCall(DMPlexGetDepthStratum(dm, 0, &vStart, &vEnd));
951: else PetscCall(DMPlexGetDepthStratum(dm, patch->dim, &vStart, &vEnd));
952: } else PetscCall(DMPlexGetHeightStratum(dm, patch->codim, &vStart, &vEnd));
953: patch->npatch = vEnd - vStart;
955: /* These labels mark the owned points. We only create patches around points that this process owns. */
956: PetscCall(DMHasLabel(dm, "pyop2_ghost", &isFiredrake));
957: if (isFiredrake) {
958: PetscCall(DMGetLabel(dm, "pyop2_ghost", &ghost));
959: PetscCall(DMLabelCreateIndex(ghost, pStart, pEnd));
960: } else {
961: PetscSF sf;
963: PetscCall(DMGetPointSF(dm, &sf));
964: PetscCall(PetscSFGetGraph(sf, NULL, &nleaves, &leaves, NULL));
965: nleaves = PetscMax(nleaves, 0);
966: }
968: PetscCall(PetscSectionCreate(PETSC_COMM_SELF, &patch->cellCounts));
969: PetscCall(PetscObjectSetName((PetscObject)patch->cellCounts, "Patch Cell Layout"));
970: cellCounts = patch->cellCounts;
971: PetscCall(PetscSectionSetChart(cellCounts, vStart, vEnd));
972: PetscCall(PetscSectionCreate(PETSC_COMM_SELF, &patch->pointCounts));
973: PetscCall(PetscObjectSetName((PetscObject)patch->pointCounts, "Patch Point Layout"));
974: pointCounts = patch->pointCounts;
975: PetscCall(PetscSectionSetChart(pointCounts, vStart, vEnd));
976: PetscCall(PetscSectionCreate(PETSC_COMM_SELF, &patch->extFacetCounts));
977: PetscCall(PetscObjectSetName((PetscObject)patch->extFacetCounts, "Patch Exterior Facet Layout"));
978: extFacetCounts = patch->extFacetCounts;
979: PetscCall(PetscSectionSetChart(extFacetCounts, vStart, vEnd));
980: PetscCall(PetscSectionCreate(PETSC_COMM_SELF, &patch->intFacetCounts));
981: PetscCall(PetscObjectSetName((PetscObject)patch->intFacetCounts, "Patch Interior Facet Layout"));
982: intFacetCounts = patch->intFacetCounts;
983: PetscCall(PetscSectionSetChart(intFacetCounts, vStart, vEnd));
984: /* Count cells and points in the patch surrounding each entity */
985: PetscCall(DMPlexGetHeightStratum(dm, 1, &fStart, &fEnd));
986: for (v = vStart; v < vEnd; ++v) {
987: PetscHashIter hi;
988: PetscInt chtSize, loc = -1;
989: PetscBool flg;
991: if (!patch->user_patches && patch->ctype != PC_PATCH_PARDECOMP) {
992: if (ghost) PetscCall(DMLabelHasPoint(ghost, v, &flg));
993: else {
994: PetscCall(PetscFindInt(v, nleaves, leaves, &loc));
995: flg = loc >= 0 ? PETSC_TRUE : PETSC_FALSE;
996: }
997: /* Not an owned entity, don't make a cell patch. */
998: if (flg) continue;
999: }
1001: PetscCall(patch->patchconstructop((void *)patch, dm, v, ht));
1002: PetscCall(PCPatchCompleteCellPatch(pc, ht, cht));
1003: PetscCall(PetscHSetIGetSize(cht, &chtSize));
1004: /* empty patch, continue */
1005: if (chtSize == 0) continue;
1007: /* safe because size(cht) > 0 from above */
1008: PetscHashIterBegin(cht, hi);
1009: while (!PetscHashIterAtEnd(cht, hi)) {
1010: PetscInt point, pdof;
1012: PetscHashIterGetKey(cht, hi, point);
1013: if (fStart <= point && point < fEnd) {
1014: const PetscInt *support;
1015: PetscInt supportSize, p;
1016: PetscBool interior = PETSC_TRUE;
1017: PetscCall(DMPlexGetSupport(dm, point, &support));
1018: PetscCall(DMPlexGetSupportSize(dm, point, &supportSize));
1019: if (supportSize == 1) {
1020: interior = PETSC_FALSE;
1021: } else {
1022: for (p = 0; p < supportSize; p++) {
1023: PetscBool found;
1024: /* FIXME: can I do this while iterating over cht? */
1025: PetscCall(PetscHSetIHas(cht, support[p], &found));
1026: if (!found) {
1027: interior = PETSC_FALSE;
1028: break;
1029: }
1030: }
1031: }
1032: if (interior) {
1033: PetscCall(PetscSectionAddDof(intFacetCounts, v, 1));
1034: } else {
1035: PetscCall(PetscSectionAddDof(extFacetCounts, v, 1));
1036: }
1037: }
1038: PetscCall(PCPatchGetGlobalDofs(pc, patch->dofSection, -1, patch->combined, point, &pdof, NULL));
1039: if (pdof) PetscCall(PetscSectionAddDof(pointCounts, v, 1));
1040: if (point >= cStart && point < cEnd) PetscCall(PetscSectionAddDof(cellCounts, v, 1));
1041: PetscHashIterNext(cht, hi);
1042: }
1043: }
1044: if (isFiredrake) PetscCall(DMLabelDestroyIndex(ghost));
1046: PetscCall(PetscSectionSetUp(cellCounts));
1047: PetscCall(PetscSectionGetStorageSize(cellCounts, &numCells));
1048: PetscCall(PetscMalloc1(numCells, &cellsArray));
1049: PetscCall(PetscSectionSetUp(pointCounts));
1050: PetscCall(PetscSectionGetStorageSize(pointCounts, &numPoints));
1051: PetscCall(PetscMalloc1(numPoints, &pointsArray));
1053: PetscCall(PetscSectionSetUp(intFacetCounts));
1054: PetscCall(PetscSectionSetUp(extFacetCounts));
1055: PetscCall(PetscSectionGetStorageSize(intFacetCounts, &numIntFacets));
1056: PetscCall(PetscSectionGetStorageSize(extFacetCounts, &numExtFacets));
1057: PetscCall(PetscMalloc1(numIntFacets, &intFacetsArray));
1058: PetscCall(PetscMalloc1(numIntFacets * 2, &intFacetsToPatchCell));
1059: PetscCall(PetscMalloc1(numExtFacets, &extFacetsArray));
1061: /* Now that we know how much space we need, run through again and actually remember the cells. */
1062: for (v = vStart; v < vEnd; v++) {
1063: PetscHashIter hi;
1064: PetscInt dof, off, cdof, coff, efdof, efoff, ifdof, ifoff, pdof, n = 0, cn = 0, ifn = 0, efn = 0;
1066: PetscCall(PetscSectionGetDof(pointCounts, v, &dof));
1067: PetscCall(PetscSectionGetOffset(pointCounts, v, &off));
1068: PetscCall(PetscSectionGetDof(cellCounts, v, &cdof));
1069: PetscCall(PetscSectionGetOffset(cellCounts, v, &coff));
1070: PetscCall(PetscSectionGetDof(intFacetCounts, v, &ifdof));
1071: PetscCall(PetscSectionGetOffset(intFacetCounts, v, &ifoff));
1072: PetscCall(PetscSectionGetDof(extFacetCounts, v, &efdof));
1073: PetscCall(PetscSectionGetOffset(extFacetCounts, v, &efoff));
1074: if (dof <= 0) continue;
1075: PetscCall(patch->patchconstructop((void *)patch, dm, v, ht));
1076: PetscCall(PCPatchCompleteCellPatch(pc, ht, cht));
1077: PetscHashIterBegin(cht, hi);
1078: while (!PetscHashIterAtEnd(cht, hi)) {
1079: PetscInt point;
1081: PetscHashIterGetKey(cht, hi, point);
1082: if (fStart <= point && point < fEnd) {
1083: const PetscInt *support;
1084: PetscInt supportSize, p;
1085: PetscBool interior = PETSC_TRUE;
1086: PetscCall(DMPlexGetSupport(dm, point, &support));
1087: PetscCall(DMPlexGetSupportSize(dm, point, &supportSize));
1088: if (supportSize == 1) {
1089: interior = PETSC_FALSE;
1090: } else {
1091: for (p = 0; p < supportSize; p++) {
1092: PetscBool found;
1093: /* FIXME: can I do this while iterating over cht? */
1094: PetscCall(PetscHSetIHas(cht, support[p], &found));
1095: if (!found) {
1096: interior = PETSC_FALSE;
1097: break;
1098: }
1099: }
1100: }
1101: if (interior) {
1102: intFacetsToPatchCell[2 * (ifoff + ifn)] = support[0];
1103: intFacetsToPatchCell[2 * (ifoff + ifn) + 1] = support[1];
1104: intFacetsArray[ifoff + ifn++] = point;
1105: } else {
1106: extFacetsArray[efoff + efn++] = point;
1107: }
1108: }
1109: PetscCall(PCPatchGetGlobalDofs(pc, patch->dofSection, -1, patch->combined, point, &pdof, NULL));
1110: if (pdof) pointsArray[off + n++] = point;
1111: if (point >= cStart && point < cEnd) cellsArray[coff + cn++] = point;
1112: PetscHashIterNext(cht, hi);
1113: }
1114: PetscCheck(ifn == ifdof, PETSC_COMM_SELF, PETSC_ERR_ARG_SIZ, "Number of interior facets in patch %" PetscInt_FMT " is %" PetscInt_FMT ", but should be %" PetscInt_FMT, v, ifn, ifdof);
1115: PetscCheck(efn == efdof, PETSC_COMM_SELF, PETSC_ERR_ARG_SIZ, "Number of exterior facets in patch %" PetscInt_FMT " is %" PetscInt_FMT ", but should be %" PetscInt_FMT, v, efn, efdof);
1116: PetscCheck(cn == cdof, PETSC_COMM_SELF, PETSC_ERR_ARG_SIZ, "Number of cells in patch %" PetscInt_FMT " is %" PetscInt_FMT ", but should be %" PetscInt_FMT, v, cn, cdof);
1117: PetscCheck(n == dof, PETSC_COMM_SELF, PETSC_ERR_ARG_SIZ, "Number of points in patch %" PetscInt_FMT " is %" PetscInt_FMT ", but should be %" PetscInt_FMT, v, n, dof);
1119: for (ifn = 0; ifn < ifdof; ifn++) {
1120: PetscInt cell0 = intFacetsToPatchCell[2 * (ifoff + ifn)];
1121: PetscInt cell1 = intFacetsToPatchCell[2 * (ifoff + ifn) + 1];
1122: PetscBool found0 = PETSC_FALSE, found1 = PETSC_FALSE;
1123: for (n = 0; n < cdof; n++) {
1124: if (!found0 && cell0 == cellsArray[coff + n]) {
1125: intFacetsToPatchCell[2 * (ifoff + ifn)] = n;
1126: found0 = PETSC_TRUE;
1127: }
1128: if (!found1 && cell1 == cellsArray[coff + n]) {
1129: intFacetsToPatchCell[2 * (ifoff + ifn) + 1] = n;
1130: found1 = PETSC_TRUE;
1131: }
1132: if (found0 && found1) break;
1133: }
1134: PetscCheck(found0 && found1, PETSC_COMM_SELF, PETSC_ERR_ARG_SIZ, "Didn't manage to find local point numbers for facet support");
1135: }
1136: }
1137: PetscCall(PetscHSetIDestroy(&ht));
1138: PetscCall(PetscHSetIDestroy(&cht));
1140: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numCells, cellsArray, PETSC_OWN_POINTER, &patch->cells));
1141: PetscCall(PetscObjectSetName((PetscObject)patch->cells, "Patch Cells"));
1142: if (patch->viewCells) {
1143: PetscCall(ObjectView((PetscObject)patch->cellCounts, patch->viewerCells, patch->formatCells));
1144: PetscCall(ObjectView((PetscObject)patch->cells, patch->viewerCells, patch->formatCells));
1145: }
1146: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numIntFacets, intFacetsArray, PETSC_OWN_POINTER, &patch->intFacets));
1147: PetscCall(PetscObjectSetName((PetscObject)patch->intFacets, "Patch Interior Facets"));
1148: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, 2 * numIntFacets, intFacetsToPatchCell, PETSC_OWN_POINTER, &patch->intFacetsToPatchCell));
1149: PetscCall(PetscObjectSetName((PetscObject)patch->intFacetsToPatchCell, "Patch Interior Facets local support"));
1150: if (patch->viewIntFacets) {
1151: PetscCall(ObjectView((PetscObject)patch->intFacetCounts, patch->viewerIntFacets, patch->formatIntFacets));
1152: PetscCall(ObjectView((PetscObject)patch->intFacets, patch->viewerIntFacets, patch->formatIntFacets));
1153: PetscCall(ObjectView((PetscObject)patch->intFacetsToPatchCell, patch->viewerIntFacets, patch->formatIntFacets));
1154: }
1155: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numExtFacets, extFacetsArray, PETSC_OWN_POINTER, &patch->extFacets));
1156: PetscCall(PetscObjectSetName((PetscObject)patch->extFacets, "Patch Exterior Facets"));
1157: if (patch->viewExtFacets) {
1158: PetscCall(ObjectView((PetscObject)patch->extFacetCounts, patch->viewerExtFacets, patch->formatExtFacets));
1159: PetscCall(ObjectView((PetscObject)patch->extFacets, patch->viewerExtFacets, patch->formatExtFacets));
1160: }
1161: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numPoints, pointsArray, PETSC_OWN_POINTER, &patch->points));
1162: PetscCall(PetscObjectSetName((PetscObject)patch->points, "Patch Points"));
1163: if (patch->viewPoints) {
1164: PetscCall(ObjectView((PetscObject)patch->pointCounts, patch->viewerPoints, patch->formatPoints));
1165: PetscCall(ObjectView((PetscObject)patch->points, patch->viewerPoints, patch->formatPoints));
1166: }
1167: PetscCall(DMDestroy(&dm));
1168: PetscFunctionReturn(PETSC_SUCCESS);
1169: }
1171: /*
1172: PCPatchCreateCellPatchDiscretisationInfo - Build the dof maps for cell patches
1174: Input Parameters:
1175: + dm - The DMPlex object defining the mesh
1176: . cellCounts - Section with counts of cells around each vertex
1177: . cells - IS of the cell point indices of cells in each patch
1178: . cellNumbering - Section mapping plex cell points to Firedrake cell indices.
1179: . nodesPerCell - number of nodes per cell.
1180: - cellNodeMap - map from cells to node indices (nodesPerCell * numCells)
1182: Output Parameters:
1183: + dofs - IS of local dof numbers of each cell in the patch, where local is a patch local numbering
1184: . gtolCounts - Section with counts of dofs per cell patch
1185: - gtol - IS mapping from global dofs to local dofs for each patch.
1186: */
1187: static PetscErrorCode PCPatchCreateCellPatchDiscretisationInfo(PC pc)
1188: {
1189: PC_PATCH *patch = (PC_PATCH *)pc->data;
1190: PetscSection cellCounts = patch->cellCounts;
1191: PetscSection pointCounts = patch->pointCounts;
1192: PetscSection gtolCounts, gtolCountsWithArtificial = NULL, gtolCountsWithAll = NULL;
1193: IS cells = patch->cells;
1194: IS points = patch->points;
1195: PetscSection cellNumbering = patch->cellNumbering;
1196: PetscInt Nf = patch->nsubspaces;
1197: PetscInt numCells, numPoints;
1198: PetscInt numDofs;
1199: PetscInt numGlobalDofs, numGlobalDofsWithArtificial, numGlobalDofsWithAll;
1200: PetscInt totalDofsPerCell = patch->totalDofsPerCell;
1201: PetscInt vStart, vEnd, v;
1202: const PetscInt *cellsArray, *pointsArray;
1203: PetscInt *newCellsArray = NULL;
1204: PetscInt *dofsArray = NULL;
1205: PetscInt *dofsArrayWithArtificial = NULL;
1206: PetscInt *dofsArrayWithAll = NULL;
1207: PetscInt *offsArray = NULL;
1208: PetscInt *offsArrayWithArtificial = NULL;
1209: PetscInt *offsArrayWithAll = NULL;
1210: PetscInt *asmArray = NULL;
1211: PetscInt *asmArrayWithArtificial = NULL;
1212: PetscInt *asmArrayWithAll = NULL;
1213: PetscInt *globalDofsArray = NULL;
1214: PetscInt *globalDofsArrayWithArtificial = NULL;
1215: PetscInt *globalDofsArrayWithAll = NULL;
1216: PetscInt globalIndex = 0;
1217: PetscInt key = 0;
1218: PetscInt asmKey = 0;
1219: DM dm = NULL, plex;
1220: const PetscInt *bcNodes = NULL;
1221: PetscHMapI ht;
1222: PetscHMapI htWithArtificial;
1223: PetscHMapI htWithAll;
1224: PetscHSetI globalBcs;
1225: PetscInt numBcs;
1226: PetscHSetI ownedpts, seenpts, owneddofs, seendofs, artificialbcs;
1227: PetscInt pStart, pEnd, p, i;
1228: char option[PETSC_MAX_PATH_LEN];
1229: PetscBool isNonlinear;
1231: PetscFunctionBegin;
1232: PetscCall(PCGetDM(pc, &dm));
1233: PetscCall(DMConvert(dm, DMPLEX, &plex));
1234: dm = plex;
1235: /* dofcounts section is cellcounts section * dofPerCell */
1236: PetscCall(PetscSectionGetStorageSize(cellCounts, &numCells));
1237: PetscCall(PetscSectionGetStorageSize(patch->pointCounts, &numPoints));
1238: numDofs = numCells * totalDofsPerCell;
1239: PetscCall(PetscMalloc1(numDofs, &dofsArray));
1240: PetscCall(PetscMalloc1(numPoints * Nf, &offsArray));
1241: PetscCall(PetscMalloc1(numDofs, &asmArray));
1242: PetscCall(PetscMalloc1(numCells, &newCellsArray));
1243: PetscCall(PetscSectionGetChart(cellCounts, &vStart, &vEnd));
1244: PetscCall(PetscSectionCreate(PETSC_COMM_SELF, &patch->gtolCounts));
1245: gtolCounts = patch->gtolCounts;
1246: PetscCall(PetscSectionSetChart(gtolCounts, vStart, vEnd));
1247: PetscCall(PetscObjectSetName((PetscObject)patch->gtolCounts, "Patch Global Index Section"));
1249: if (patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) {
1250: PetscCall(PetscMalloc1(numPoints * Nf, &offsArrayWithArtificial));
1251: PetscCall(PetscMalloc1(numDofs, &asmArrayWithArtificial));
1252: PetscCall(PetscMalloc1(numDofs, &dofsArrayWithArtificial));
1253: PetscCall(PetscSectionCreate(PETSC_COMM_SELF, &patch->gtolCountsWithArtificial));
1254: gtolCountsWithArtificial = patch->gtolCountsWithArtificial;
1255: PetscCall(PetscSectionSetChart(gtolCountsWithArtificial, vStart, vEnd));
1256: PetscCall(PetscObjectSetName((PetscObject)patch->gtolCountsWithArtificial, "Patch Global Index Section Including Artificial BCs"));
1257: }
1259: isNonlinear = patch->isNonlinear;
1260: if (isNonlinear) {
1261: PetscCall(PetscMalloc1(numPoints * Nf, &offsArrayWithAll));
1262: PetscCall(PetscMalloc1(numDofs, &asmArrayWithAll));
1263: PetscCall(PetscMalloc1(numDofs, &dofsArrayWithAll));
1264: PetscCall(PetscSectionCreate(PETSC_COMM_SELF, &patch->gtolCountsWithAll));
1265: gtolCountsWithAll = patch->gtolCountsWithAll;
1266: PetscCall(PetscSectionSetChart(gtolCountsWithAll, vStart, vEnd));
1267: PetscCall(PetscObjectSetName((PetscObject)patch->gtolCountsWithAll, "Patch Global Index Section Including All BCs"));
1268: }
1270: /* Outside the patch loop, get the dofs that are globally-enforced Dirichlet
1271: conditions */
1272: PetscCall(PetscHSetICreate(&globalBcs));
1273: PetscCall(ISGetIndices(patch->ghostBcNodes, &bcNodes));
1274: PetscCall(ISGetSize(patch->ghostBcNodes, &numBcs));
1275: for (i = 0; i < numBcs; ++i) { PetscCall(PetscHSetIAdd(globalBcs, bcNodes[i])); /* these are already in concatenated numbering */ }
1276: PetscCall(ISRestoreIndices(patch->ghostBcNodes, &bcNodes));
1277: PetscCall(ISDestroy(&patch->ghostBcNodes)); /* memory optimisation */
1279: /* Hash tables for artificial BC construction */
1280: PetscCall(PetscHSetICreate(&ownedpts));
1281: PetscCall(PetscHSetICreate(&seenpts));
1282: PetscCall(PetscHSetICreate(&owneddofs));
1283: PetscCall(PetscHSetICreate(&seendofs));
1284: PetscCall(PetscHSetICreate(&artificialbcs));
1286: PetscCall(ISGetIndices(cells, &cellsArray));
1287: PetscCall(ISGetIndices(points, &pointsArray));
1288: PetscCall(PetscHMapICreate(&ht));
1289: PetscCall(PetscHMapICreate(&htWithArtificial));
1290: PetscCall(PetscHMapICreate(&htWithAll));
1291: for (v = vStart; v < vEnd; ++v) {
1292: PetscInt localIndex = 0;
1293: PetscInt localIndexWithArtificial = 0;
1294: PetscInt localIndexWithAll = 0;
1295: PetscInt dof, off, i, j, k, l;
1297: PetscCall(PetscHMapIClear(ht));
1298: PetscCall(PetscHMapIClear(htWithArtificial));
1299: PetscCall(PetscHMapIClear(htWithAll));
1300: PetscCall(PetscSectionGetDof(cellCounts, v, &dof));
1301: PetscCall(PetscSectionGetOffset(cellCounts, v, &off));
1302: if (dof <= 0) continue;
1304: /* Calculate the global numbers of the artificial BC dofs here first */
1305: PetscCall(patch->patchconstructop((void *)patch, dm, v, ownedpts));
1306: PetscCall(PCPatchCompleteCellPatch(pc, ownedpts, seenpts));
1307: PetscCall(PCPatchGetPointDofs(pc, ownedpts, owneddofs, v, &patch->subspaces_to_exclude));
1308: PetscCall(PCPatchGetPointDofs(pc, seenpts, seendofs, v, NULL));
1309: PetscCall(PCPatchComputeSetDifference_Private(owneddofs, seendofs, artificialbcs));
1310: if (patch->viewPatches) {
1311: PetscHSetI globalbcdofs;
1312: PetscHashIter hi;
1313: MPI_Comm comm = PetscObjectComm((PetscObject)pc);
1315: PetscCall(PetscHSetICreate(&globalbcdofs));
1316: PetscCall(PetscSynchronizedPrintf(comm, "Patch %" PetscInt_FMT ": owned dofs:\n", v));
1317: PetscHashIterBegin(owneddofs, hi);
1318: while (!PetscHashIterAtEnd(owneddofs, hi)) {
1319: PetscInt globalDof;
1321: PetscHashIterGetKey(owneddofs, hi, globalDof);
1322: PetscHashIterNext(owneddofs, hi);
1323: PetscCall(PetscSynchronizedPrintf(comm, "%" PetscInt_FMT " ", globalDof));
1324: }
1325: PetscCall(PetscSynchronizedPrintf(comm, "\n"));
1326: PetscCall(PetscSynchronizedPrintf(comm, "Patch %" PetscInt_FMT ": seen dofs:\n", v));
1327: PetscHashIterBegin(seendofs, hi);
1328: while (!PetscHashIterAtEnd(seendofs, hi)) {
1329: PetscInt globalDof;
1330: PetscBool flg;
1332: PetscHashIterGetKey(seendofs, hi, globalDof);
1333: PetscHashIterNext(seendofs, hi);
1334: PetscCall(PetscSynchronizedPrintf(comm, "%" PetscInt_FMT " ", globalDof));
1336: PetscCall(PetscHSetIHas(globalBcs, globalDof, &flg));
1337: if (flg) PetscCall(PetscHSetIAdd(globalbcdofs, globalDof));
1338: }
1339: PetscCall(PetscSynchronizedPrintf(comm, "\n"));
1340: PetscCall(PetscSynchronizedPrintf(comm, "Patch %" PetscInt_FMT ": global BCs:\n", v));
1341: PetscCall(PetscHSetIGetSize(globalbcdofs, &numBcs));
1342: if (numBcs > 0) {
1343: PetscHashIterBegin(globalbcdofs, hi);
1344: while (!PetscHashIterAtEnd(globalbcdofs, hi)) {
1345: PetscInt globalDof;
1346: PetscHashIterGetKey(globalbcdofs, hi, globalDof);
1347: PetscHashIterNext(globalbcdofs, hi);
1348: PetscCall(PetscSynchronizedPrintf(comm, "%" PetscInt_FMT " ", globalDof));
1349: }
1350: }
1351: PetscCall(PetscSynchronizedPrintf(comm, "\n"));
1352: PetscCall(PetscSynchronizedPrintf(comm, "Patch %" PetscInt_FMT ": artificial BCs:\n", v));
1353: PetscCall(PetscHSetIGetSize(artificialbcs, &numBcs));
1354: if (numBcs > 0) {
1355: PetscHashIterBegin(artificialbcs, hi);
1356: while (!PetscHashIterAtEnd(artificialbcs, hi)) {
1357: PetscInt globalDof;
1358: PetscHashIterGetKey(artificialbcs, hi, globalDof);
1359: PetscHashIterNext(artificialbcs, hi);
1360: PetscCall(PetscSynchronizedPrintf(comm, "%" PetscInt_FMT " ", globalDof));
1361: }
1362: }
1363: PetscCall(PetscSynchronizedPrintf(comm, "\n\n"));
1364: PetscCall(PetscHSetIDestroy(&globalbcdofs));
1365: }
1366: for (k = 0; k < patch->nsubspaces; ++k) {
1367: const PetscInt *cellNodeMap = patch->cellNodeMap[k];
1368: PetscInt nodesPerCell = patch->nodesPerCell[k];
1369: PetscInt subspaceOffset = patch->subspaceOffsets[k];
1370: PetscInt bs = patch->bs[k];
1372: for (i = off; i < off + dof; ++i) {
1373: /* Walk over the cells in this patch. */
1374: const PetscInt c = cellsArray[i];
1375: PetscInt cell = c;
1377: /* TODO Change this to an IS */
1378: if (cellNumbering) {
1379: PetscCall(PetscSectionGetDof(cellNumbering, c, &cell));
1380: PetscCheck(cell > 0, PetscObjectComm((PetscObject)pc), PETSC_ERR_ARG_OUTOFRANGE, "Cell %" PetscInt_FMT " doesn't appear in cell numbering map", c);
1381: PetscCall(PetscSectionGetOffset(cellNumbering, c, &cell));
1382: }
1383: newCellsArray[i] = cell;
1384: for (j = 0; j < nodesPerCell; ++j) {
1385: /* For each global dof, map it into contiguous local storage. */
1386: const PetscInt globalDof = cellNodeMap[cell * nodesPerCell + j] * bs + subspaceOffset;
1387: /* finally, loop over block size */
1388: for (l = 0; l < bs; ++l) {
1389: PetscInt localDof;
1390: PetscBool isGlobalBcDof, isArtificialBcDof;
1392: /* first, check if this is either a globally enforced or locally enforced BC dof */
1393: PetscCall(PetscHSetIHas(globalBcs, globalDof + l, &isGlobalBcDof));
1394: PetscCall(PetscHSetIHas(artificialbcs, globalDof + l, &isArtificialBcDof));
1396: /* if it's either, don't ever give it a local dof number */
1397: if (isGlobalBcDof || isArtificialBcDof) {
1398: dofsArray[globalIndex] = -1; /* don't use this in assembly in this patch */
1399: } else {
1400: PetscCall(PetscHMapIGet(ht, globalDof + l, &localDof));
1401: if (localDof == -1) {
1402: localDof = localIndex++;
1403: PetscCall(PetscHMapISet(ht, globalDof + l, localDof));
1404: }
1405: PetscCheck(globalIndex < numDofs, PETSC_COMM_WORLD, PETSC_ERR_ARG_OUTOFRANGE, "Found more dofs %" PetscInt_FMT " than expected %" PetscInt_FMT, globalIndex + 1, numDofs);
1406: /* And store. */
1407: dofsArray[globalIndex] = localDof;
1408: }
1410: if (patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) {
1411: if (isGlobalBcDof) {
1412: dofsArrayWithArtificial[globalIndex] = -1; /* don't use this in assembly in this patch */
1413: } else {
1414: PetscCall(PetscHMapIGet(htWithArtificial, globalDof + l, &localDof));
1415: if (localDof == -1) {
1416: localDof = localIndexWithArtificial++;
1417: PetscCall(PetscHMapISet(htWithArtificial, globalDof + l, localDof));
1418: }
1419: PetscCheck(globalIndex < numDofs, PETSC_COMM_WORLD, PETSC_ERR_ARG_OUTOFRANGE, "Found more dofs %" PetscInt_FMT " than expected %" PetscInt_FMT, globalIndex + 1, numDofs);
1420: /* And store.*/
1421: dofsArrayWithArtificial[globalIndex] = localDof;
1422: }
1423: }
1425: if (isNonlinear) {
1426: /* Build the dofmap for the function space with _all_ dofs,
1427: including those in any kind of boundary condition */
1428: PetscCall(PetscHMapIGet(htWithAll, globalDof + l, &localDof));
1429: if (localDof == -1) {
1430: localDof = localIndexWithAll++;
1431: PetscCall(PetscHMapISet(htWithAll, globalDof + l, localDof));
1432: }
1433: PetscCheck(globalIndex < numDofs, PETSC_COMM_WORLD, PETSC_ERR_ARG_OUTOFRANGE, "Found more dofs %" PetscInt_FMT " than expected %" PetscInt_FMT, globalIndex + 1, numDofs);
1434: /* And store.*/
1435: dofsArrayWithAll[globalIndex] = localDof;
1436: }
1437: globalIndex++;
1438: }
1439: }
1440: }
1441: }
1442: /* How many local dofs in this patch? */
1443: if (patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) {
1444: PetscCall(PetscHMapIGetSize(htWithArtificial, &dof));
1445: PetscCall(PetscSectionSetDof(gtolCountsWithArtificial, v, dof));
1446: }
1447: if (isNonlinear) {
1448: PetscCall(PetscHMapIGetSize(htWithAll, &dof));
1449: PetscCall(PetscSectionSetDof(gtolCountsWithAll, v, dof));
1450: }
1451: PetscCall(PetscHMapIGetSize(ht, &dof));
1452: PetscCall(PetscSectionSetDof(gtolCounts, v, dof));
1453: }
1455: PetscCall(DMDestroy(&dm));
1456: PetscCheck(globalIndex == numDofs, PETSC_COMM_SELF, PETSC_ERR_ARG_OUTOFRANGE, "Expected number of dofs (%" PetscInt_FMT ") doesn't match found number (%" PetscInt_FMT ")", numDofs, globalIndex);
1457: PetscCall(PetscSectionSetUp(gtolCounts));
1458: PetscCall(PetscSectionGetStorageSize(gtolCounts, &numGlobalDofs));
1459: PetscCall(PetscMalloc1(numGlobalDofs, &globalDofsArray));
1461: if (patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) {
1462: PetscCall(PetscSectionSetUp(gtolCountsWithArtificial));
1463: PetscCall(PetscSectionGetStorageSize(gtolCountsWithArtificial, &numGlobalDofsWithArtificial));
1464: PetscCall(PetscMalloc1(numGlobalDofsWithArtificial, &globalDofsArrayWithArtificial));
1465: }
1466: if (isNonlinear) {
1467: PetscCall(PetscSectionSetUp(gtolCountsWithAll));
1468: PetscCall(PetscSectionGetStorageSize(gtolCountsWithAll, &numGlobalDofsWithAll));
1469: PetscCall(PetscMalloc1(numGlobalDofsWithAll, &globalDofsArrayWithAll));
1470: }
1471: /* Now populate the global to local map. This could be merged into the above loop if we were willing to deal with reallocs. */
1472: for (v = vStart; v < vEnd; ++v) {
1473: PetscHashIter hi;
1474: PetscInt dof, off, Np, ooff, i, j, k, l;
1476: PetscCall(PetscHMapIClear(ht));
1477: PetscCall(PetscHMapIClear(htWithArtificial));
1478: PetscCall(PetscHMapIClear(htWithAll));
1479: PetscCall(PetscSectionGetDof(cellCounts, v, &dof));
1480: PetscCall(PetscSectionGetOffset(cellCounts, v, &off));
1481: PetscCall(PetscSectionGetDof(pointCounts, v, &Np));
1482: PetscCall(PetscSectionGetOffset(pointCounts, v, &ooff));
1483: if (dof <= 0) continue;
1485: for (k = 0; k < patch->nsubspaces; ++k) {
1486: const PetscInt *cellNodeMap = patch->cellNodeMap[k];
1487: PetscInt nodesPerCell = patch->nodesPerCell[k];
1488: PetscInt subspaceOffset = patch->subspaceOffsets[k];
1489: PetscInt bs = patch->bs[k];
1490: PetscInt goff;
1492: for (i = off; i < off + dof; ++i) {
1493: /* Reconstruct mapping of global-to-local on this patch. */
1494: const PetscInt c = cellsArray[i];
1495: PetscInt cell = c;
1497: if (cellNumbering) PetscCall(PetscSectionGetOffset(cellNumbering, c, &cell));
1498: for (j = 0; j < nodesPerCell; ++j) {
1499: for (l = 0; l < bs; ++l) {
1500: const PetscInt globalDof = cellNodeMap[cell * nodesPerCell + j] * bs + l + subspaceOffset;
1501: const PetscInt localDof = dofsArray[key];
1502: if (localDof >= 0) PetscCall(PetscHMapISet(ht, globalDof, localDof));
1503: if (patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) {
1504: const PetscInt localDofWithArtificial = dofsArrayWithArtificial[key];
1505: if (localDofWithArtificial >= 0) PetscCall(PetscHMapISet(htWithArtificial, globalDof, localDofWithArtificial));
1506: }
1507: if (isNonlinear) {
1508: const PetscInt localDofWithAll = dofsArrayWithAll[key];
1509: if (localDofWithAll >= 0) PetscCall(PetscHMapISet(htWithAll, globalDof, localDofWithAll));
1510: }
1511: key++;
1512: }
1513: }
1514: }
1516: /* Shove it in the output data structure. */
1517: PetscCall(PetscSectionGetOffset(gtolCounts, v, &goff));
1518: PetscHashIterBegin(ht, hi);
1519: while (!PetscHashIterAtEnd(ht, hi)) {
1520: PetscInt globalDof, localDof;
1522: PetscHashIterGetKey(ht, hi, globalDof);
1523: PetscHashIterGetVal(ht, hi, localDof);
1524: if (globalDof >= 0) globalDofsArray[goff + localDof] = globalDof;
1525: PetscHashIterNext(ht, hi);
1526: }
1528: if (patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) {
1529: PetscCall(PetscSectionGetOffset(gtolCountsWithArtificial, v, &goff));
1530: PetscHashIterBegin(htWithArtificial, hi);
1531: while (!PetscHashIterAtEnd(htWithArtificial, hi)) {
1532: PetscInt globalDof, localDof;
1533: PetscHashIterGetKey(htWithArtificial, hi, globalDof);
1534: PetscHashIterGetVal(htWithArtificial, hi, localDof);
1535: if (globalDof >= 0) globalDofsArrayWithArtificial[goff + localDof] = globalDof;
1536: PetscHashIterNext(htWithArtificial, hi);
1537: }
1538: }
1539: if (isNonlinear) {
1540: PetscCall(PetscSectionGetOffset(gtolCountsWithAll, v, &goff));
1541: PetscHashIterBegin(htWithAll, hi);
1542: while (!PetscHashIterAtEnd(htWithAll, hi)) {
1543: PetscInt globalDof, localDof;
1544: PetscHashIterGetKey(htWithAll, hi, globalDof);
1545: PetscHashIterGetVal(htWithAll, hi, localDof);
1546: if (globalDof >= 0) globalDofsArrayWithAll[goff + localDof] = globalDof;
1547: PetscHashIterNext(htWithAll, hi);
1548: }
1549: }
1551: for (p = 0; p < Np; ++p) {
1552: const PetscInt point = pointsArray[ooff + p];
1553: PetscInt globalDof, localDof;
1555: PetscCall(PCPatchGetGlobalDofs(pc, patch->dofSection, k, patch->combined, point, NULL, &globalDof));
1556: PetscCall(PetscHMapIGet(ht, globalDof, &localDof));
1557: offsArray[(ooff + p) * Nf + k] = localDof;
1558: if (patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) {
1559: PetscCall(PetscHMapIGet(htWithArtificial, globalDof, &localDof));
1560: offsArrayWithArtificial[(ooff + p) * Nf + k] = localDof;
1561: }
1562: if (isNonlinear) {
1563: PetscCall(PetscHMapIGet(htWithAll, globalDof, &localDof));
1564: offsArrayWithAll[(ooff + p) * Nf + k] = localDof;
1565: }
1566: }
1567: }
1569: PetscCall(PetscHSetIDestroy(&globalBcs));
1570: PetscCall(PetscHSetIDestroy(&ownedpts));
1571: PetscCall(PetscHSetIDestroy(&seenpts));
1572: PetscCall(PetscHSetIDestroy(&owneddofs));
1573: PetscCall(PetscHSetIDestroy(&seendofs));
1574: PetscCall(PetscHSetIDestroy(&artificialbcs));
1576: /* At this point, we have a hash table ht built that maps globalDof -> localDof.
1577: We need to create the dof table laid out cellwise first, then by subspace,
1578: as the assembler assembles cell-wise and we need to stuff the different
1579: contributions of the different function spaces to the right places. So we loop
1580: over cells, then over subspaces. */
1581: if (patch->nsubspaces > 1) { /* for nsubspaces = 1, data we need is already in dofsArray */
1582: for (i = off; i < off + dof; ++i) {
1583: const PetscInt c = cellsArray[i];
1584: PetscInt cell = c;
1586: if (cellNumbering) PetscCall(PetscSectionGetOffset(cellNumbering, c, &cell));
1587: for (k = 0; k < patch->nsubspaces; ++k) {
1588: const PetscInt *cellNodeMap = patch->cellNodeMap[k];
1589: PetscInt nodesPerCell = patch->nodesPerCell[k];
1590: PetscInt subspaceOffset = patch->subspaceOffsets[k];
1591: PetscInt bs = patch->bs[k];
1593: for (j = 0; j < nodesPerCell; ++j) {
1594: for (l = 0; l < bs; ++l) {
1595: const PetscInt globalDof = cellNodeMap[cell * nodesPerCell + j] * bs + l + subspaceOffset;
1596: PetscInt localDof;
1598: PetscCall(PetscHMapIGet(ht, globalDof, &localDof));
1599: /* If it's not in the hash table, i.e. is a BC dof,
1600: then the PetscHSetIMap above gives -1, which matches
1601: exactly the convention for PETSc's matrix assembly to
1602: ignore the dof. So we don't need to do anything here */
1603: asmArray[asmKey] = localDof;
1604: if (patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) {
1605: PetscCall(PetscHMapIGet(htWithArtificial, globalDof, &localDof));
1606: asmArrayWithArtificial[asmKey] = localDof;
1607: }
1608: if (isNonlinear) {
1609: PetscCall(PetscHMapIGet(htWithAll, globalDof, &localDof));
1610: asmArrayWithAll[asmKey] = localDof;
1611: }
1612: asmKey++;
1613: }
1614: }
1615: }
1616: }
1617: }
1618: }
1619: if (1 == patch->nsubspaces) {
1620: PetscCall(PetscArraycpy(asmArray, dofsArray, numDofs));
1621: if (patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) PetscCall(PetscArraycpy(asmArrayWithArtificial, dofsArrayWithArtificial, numDofs));
1622: if (isNonlinear) PetscCall(PetscArraycpy(asmArrayWithAll, dofsArrayWithAll, numDofs));
1623: }
1625: PetscCall(PetscHMapIDestroy(&ht));
1626: PetscCall(PetscHMapIDestroy(&htWithArtificial));
1627: PetscCall(PetscHMapIDestroy(&htWithAll));
1628: PetscCall(ISRestoreIndices(cells, &cellsArray));
1629: PetscCall(ISRestoreIndices(points, &pointsArray));
1630: PetscCall(PetscFree(dofsArray));
1631: if (patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) PetscCall(PetscFree(dofsArrayWithArtificial));
1632: if (isNonlinear) PetscCall(PetscFree(dofsArrayWithAll));
1633: /* Create placeholder section for map from points to patch dofs */
1634: PetscCall(PetscSectionCreate(PETSC_COMM_SELF, &patch->patchSection));
1635: PetscCall(PetscSectionSetNumFields(patch->patchSection, patch->nsubspaces));
1636: if (patch->combined) {
1637: PetscInt numFields;
1638: PetscCall(PetscSectionGetNumFields(patch->dofSection[0], &numFields));
1639: PetscCheck(numFields == patch->nsubspaces, PetscObjectComm((PetscObject)pc), PETSC_ERR_ARG_WRONG, "Mismatch between number of section fields %" PetscInt_FMT " and number of subspaces %" PetscInt_FMT, numFields, patch->nsubspaces);
1640: PetscCall(PetscSectionGetChart(patch->dofSection[0], &pStart, &pEnd));
1641: PetscCall(PetscSectionSetChart(patch->patchSection, pStart, pEnd));
1642: for (p = pStart; p < pEnd; ++p) {
1643: PetscInt dof, fdof, f;
1645: PetscCall(PetscSectionGetDof(patch->dofSection[0], p, &dof));
1646: PetscCall(PetscSectionSetDof(patch->patchSection, p, dof));
1647: for (f = 0; f < patch->nsubspaces; ++f) {
1648: PetscCall(PetscSectionGetFieldDof(patch->dofSection[0], p, f, &fdof));
1649: PetscCall(PetscSectionSetFieldDof(patch->patchSection, p, f, fdof));
1650: }
1651: }
1652: } else {
1653: PetscInt pStartf, pEndf, f;
1654: pStart = PETSC_INT_MAX;
1655: pEnd = PETSC_INT_MIN;
1656: for (f = 0; f < patch->nsubspaces; ++f) {
1657: PetscCall(PetscSectionGetChart(patch->dofSection[f], &pStartf, &pEndf));
1658: pStart = PetscMin(pStart, pStartf);
1659: pEnd = PetscMax(pEnd, pEndf);
1660: }
1661: PetscCall(PetscSectionSetChart(patch->patchSection, pStart, pEnd));
1662: for (f = 0; f < patch->nsubspaces; ++f) {
1663: PetscCall(PetscSectionGetChart(patch->dofSection[f], &pStartf, &pEndf));
1664: for (p = pStartf; p < pEndf; ++p) {
1665: PetscInt fdof;
1666: PetscCall(PetscSectionGetDof(patch->dofSection[f], p, &fdof));
1667: PetscCall(PetscSectionAddDof(patch->patchSection, p, fdof));
1668: PetscCall(PetscSectionSetFieldDof(patch->patchSection, p, f, fdof));
1669: }
1670: }
1671: }
1672: PetscCall(PetscSectionSetUp(patch->patchSection));
1673: PetscCall(PetscSectionSetUseFieldOffsets(patch->patchSection, PETSC_TRUE));
1674: /* Replace cell indices with firedrake-numbered ones. */
1675: PetscCall(ISGeneralSetIndices(cells, numCells, (const PetscInt *)newCellsArray, PETSC_OWN_POINTER));
1676: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numGlobalDofs, globalDofsArray, PETSC_OWN_POINTER, &patch->gtol));
1677: PetscCall(PetscObjectSetName((PetscObject)patch->gtol, "Global Indices"));
1678: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_g2l_view", patch->classname));
1679: PetscCall(PetscSectionViewFromOptions(patch->gtolCounts, (PetscObject)pc, option));
1680: PetscCall(ISViewFromOptions(patch->gtol, (PetscObject)pc, option));
1681: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numDofs, asmArray, PETSC_OWN_POINTER, &patch->dofs));
1682: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numPoints * Nf, offsArray, PETSC_OWN_POINTER, &patch->offs));
1683: if (patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) {
1684: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numGlobalDofsWithArtificial, globalDofsArrayWithArtificial, PETSC_OWN_POINTER, &patch->gtolWithArtificial));
1685: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numDofs, asmArrayWithArtificial, PETSC_OWN_POINTER, &patch->dofsWithArtificial));
1686: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numPoints * Nf, offsArrayWithArtificial, PETSC_OWN_POINTER, &patch->offsWithArtificial));
1687: }
1688: if (isNonlinear) {
1689: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numGlobalDofsWithAll, globalDofsArrayWithAll, PETSC_OWN_POINTER, &patch->gtolWithAll));
1690: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numDofs, asmArrayWithAll, PETSC_OWN_POINTER, &patch->dofsWithAll));
1691: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numPoints * Nf, offsArrayWithAll, PETSC_OWN_POINTER, &patch->offsWithAll));
1692: }
1693: PetscFunctionReturn(PETSC_SUCCESS);
1694: }
1696: static PetscErrorCode PCPatchCreateMatrix_Private(PC pc, PetscInt point, Mat *mat, PetscBool withArtificial)
1697: {
1698: PC_PATCH *patch = (PC_PATCH *)pc->data;
1699: PetscBool flg;
1700: PetscInt csize, rsize;
1701: const char *prefix = NULL;
1703: PetscFunctionBegin;
1704: if (withArtificial) {
1705: /* would be nice if we could create a rectangular matrix of size numDofsWithArtificial x numDofs here */
1706: PetscInt pStart;
1707: PetscCall(PetscSectionGetChart(patch->gtolCountsWithArtificial, &pStart, NULL));
1708: PetscCall(PetscSectionGetDof(patch->gtolCountsWithArtificial, point + pStart, &rsize));
1709: csize = rsize;
1710: } else {
1711: PetscInt pStart;
1712: PetscCall(PetscSectionGetChart(patch->gtolCounts, &pStart, NULL));
1713: PetscCall(PetscSectionGetDof(patch->gtolCounts, point + pStart, &rsize));
1714: csize = rsize;
1715: }
1717: PetscCall(MatCreate(PETSC_COMM_SELF, mat));
1718: PetscCall(PCGetOptionsPrefix(pc, &prefix));
1719: PetscCall(MatSetOptionsPrefix(*mat, prefix));
1720: PetscCall(MatAppendOptionsPrefix(*mat, "pc_patch_sub_"));
1721: if (patch->sub_mat_type) PetscCall(MatSetType(*mat, patch->sub_mat_type));
1722: else if (!patch->sub_mat_type) PetscCall(MatSetType(*mat, MATDENSE));
1723: PetscCall(MatSetSizes(*mat, rsize, csize, rsize, csize));
1724: PetscCall(PetscObjectTypeCompare((PetscObject)*mat, MATDENSE, &flg));
1725: if (!flg) PetscCall(PetscObjectTypeCompare((PetscObject)*mat, MATSEQDENSE, &flg));
1726: /* Sparse patch matrices */
1727: if (!flg) {
1728: PetscBT bt;
1729: PetscInt *dnnz = NULL;
1730: const PetscInt *dofsArray = NULL;
1731: PetscInt pStart, pEnd, ncell, offset, c, i, j;
1733: if (withArtificial) {
1734: PetscCall(ISGetIndices(patch->dofsWithArtificial, &dofsArray));
1735: } else {
1736: PetscCall(ISGetIndices(patch->dofs, &dofsArray));
1737: }
1738: PetscCall(PetscSectionGetChart(patch->cellCounts, &pStart, &pEnd));
1739: point += pStart;
1740: PetscCheck(point < pEnd, PETSC_COMM_SELF, PETSC_ERR_ARG_OUTOFRANGE, "Operator point %" PetscInt_FMT " not in [%" PetscInt_FMT ", %" PetscInt_FMT ")", point, pStart, pEnd);
1741: PetscCall(PetscSectionGetDof(patch->cellCounts, point, &ncell));
1742: PetscCall(PetscSectionGetOffset(patch->cellCounts, point, &offset));
1743: PetscCall(PetscLogEventBegin(PC_Patch_Prealloc, pc, 0, 0, 0));
1744: /* A PetscBT uses N^2 bits to store the sparsity pattern on a
1745: * patch. This is probably OK if the patches are not too big,
1746: * but uses too much memory. We therefore switch based on rsize. */
1747: if (rsize < 3000) { /* FIXME: I picked this switch value out of my hat */
1748: PetscScalar *zeroes;
1749: PetscInt rows;
1751: PetscCall(PetscCalloc1(rsize, &dnnz));
1752: PetscCall(PetscBTCreate(rsize * rsize, &bt));
1753: for (c = 0; c < ncell; ++c) {
1754: const PetscInt *idx = dofsArray + (offset + c) * patch->totalDofsPerCell;
1755: for (i = 0; i < patch->totalDofsPerCell; ++i) {
1756: const PetscInt row = idx[i];
1757: if (row < 0) continue;
1758: for (j = 0; j < patch->totalDofsPerCell; ++j) {
1759: const PetscInt col = idx[j];
1760: const PetscInt key = row * rsize + col;
1761: if (col < 0) continue;
1762: if (!PetscBTLookupSet(bt, key)) ++dnnz[row];
1763: }
1764: }
1765: }
1767: if (patch->usercomputeopintfacet) {
1768: const PetscInt *intFacetsArray = NULL;
1769: PetscInt i, numIntFacets, intFacetOffset;
1770: const PetscInt *facetCells = NULL;
1772: PetscCall(PetscSectionGetDof(patch->intFacetCounts, point, &numIntFacets));
1773: PetscCall(PetscSectionGetOffset(patch->intFacetCounts, point, &intFacetOffset));
1774: PetscCall(ISGetIndices(patch->intFacetsToPatchCell, &facetCells));
1775: PetscCall(ISGetIndices(patch->intFacets, &intFacetsArray));
1776: for (i = 0; i < numIntFacets; i++) {
1777: const PetscInt cell0 = facetCells[2 * (intFacetOffset + i) + 0];
1778: const PetscInt cell1 = facetCells[2 * (intFacetOffset + i) + 1];
1779: PetscInt celli, cellj;
1781: for (celli = 0; celli < patch->totalDofsPerCell; celli++) {
1782: const PetscInt row = dofsArray[(offset + cell0) * patch->totalDofsPerCell + celli];
1783: if (row < 0) continue;
1784: for (cellj = 0; cellj < patch->totalDofsPerCell; cellj++) {
1785: const PetscInt col = dofsArray[(offset + cell1) * patch->totalDofsPerCell + cellj];
1786: const PetscInt key = row * rsize + col;
1787: if (col < 0) continue;
1788: if (!PetscBTLookupSet(bt, key)) ++dnnz[row];
1789: }
1790: }
1792: for (celli = 0; celli < patch->totalDofsPerCell; celli++) {
1793: const PetscInt row = dofsArray[(offset + cell1) * patch->totalDofsPerCell + celli];
1794: if (row < 0) continue;
1795: for (cellj = 0; cellj < patch->totalDofsPerCell; cellj++) {
1796: const PetscInt col = dofsArray[(offset + cell0) * patch->totalDofsPerCell + cellj];
1797: const PetscInt key = row * rsize + col;
1798: if (col < 0) continue;
1799: if (!PetscBTLookupSet(bt, key)) ++dnnz[row];
1800: }
1801: }
1802: }
1803: }
1804: PetscCall(PetscBTDestroy(&bt));
1805: PetscCall(MatXAIJSetPreallocation(*mat, 1, dnnz, NULL, NULL, NULL));
1806: PetscCall(PetscFree(dnnz));
1808: PetscCall(PetscCalloc1(patch->totalDofsPerCell * patch->totalDofsPerCell, &zeroes));
1809: for (c = 0; c < ncell; ++c) {
1810: const PetscInt *idx = &dofsArray[(offset + c) * patch->totalDofsPerCell];
1811: PetscCall(MatSetValues(*mat, patch->totalDofsPerCell, idx, patch->totalDofsPerCell, idx, zeroes, INSERT_VALUES));
1812: }
1813: PetscCall(MatGetLocalSize(*mat, &rows, NULL));
1814: for (i = 0; i < rows; ++i) PetscCall(MatSetValues(*mat, 1, &i, 1, &i, zeroes, INSERT_VALUES));
1816: if (patch->usercomputeopintfacet) {
1817: const PetscInt *intFacetsArray = NULL;
1818: PetscInt i, numIntFacets, intFacetOffset;
1819: const PetscInt *facetCells = NULL;
1821: PetscCall(PetscSectionGetDof(patch->intFacetCounts, point, &numIntFacets));
1822: PetscCall(PetscSectionGetOffset(patch->intFacetCounts, point, &intFacetOffset));
1823: PetscCall(ISGetIndices(patch->intFacetsToPatchCell, &facetCells));
1824: PetscCall(ISGetIndices(patch->intFacets, &intFacetsArray));
1825: for (i = 0; i < numIntFacets; i++) {
1826: const PetscInt cell0 = facetCells[2 * (intFacetOffset + i) + 0];
1827: const PetscInt cell1 = facetCells[2 * (intFacetOffset + i) + 1];
1828: const PetscInt *cell0idx = &dofsArray[(offset + cell0) * patch->totalDofsPerCell];
1829: const PetscInt *cell1idx = &dofsArray[(offset + cell1) * patch->totalDofsPerCell];
1830: PetscCall(MatSetValues(*mat, patch->totalDofsPerCell, cell0idx, patch->totalDofsPerCell, cell1idx, zeroes, INSERT_VALUES));
1831: PetscCall(MatSetValues(*mat, patch->totalDofsPerCell, cell1idx, patch->totalDofsPerCell, cell0idx, zeroes, INSERT_VALUES));
1832: }
1833: }
1835: PetscCall(MatAssemblyBegin(*mat, MAT_FINAL_ASSEMBLY));
1836: PetscCall(MatAssemblyEnd(*mat, MAT_FINAL_ASSEMBLY));
1838: PetscCall(PetscFree(zeroes));
1840: } else { /* rsize too big, use MATPREALLOCATOR */
1841: Mat preallocator;
1842: PetscScalar *vals;
1844: PetscCall(PetscCalloc1(patch->totalDofsPerCell * patch->totalDofsPerCell, &vals));
1845: PetscCall(MatCreate(PETSC_COMM_SELF, &preallocator));
1846: PetscCall(MatSetType(preallocator, MATPREALLOCATOR));
1847: PetscCall(MatSetSizes(preallocator, rsize, rsize, rsize, rsize));
1848: PetscCall(MatSetUp(preallocator));
1850: for (c = 0; c < ncell; ++c) {
1851: const PetscInt *idx = dofsArray + (offset + c) * patch->totalDofsPerCell;
1852: PetscCall(MatSetValues(preallocator, patch->totalDofsPerCell, idx, patch->totalDofsPerCell, idx, vals, INSERT_VALUES));
1853: }
1855: if (patch->usercomputeopintfacet) {
1856: const PetscInt *intFacetsArray = NULL;
1857: PetscInt i, numIntFacets, intFacetOffset;
1858: const PetscInt *facetCells = NULL;
1860: PetscCall(PetscSectionGetDof(patch->intFacetCounts, point, &numIntFacets));
1861: PetscCall(PetscSectionGetOffset(patch->intFacetCounts, point, &intFacetOffset));
1862: PetscCall(ISGetIndices(patch->intFacetsToPatchCell, &facetCells));
1863: PetscCall(ISGetIndices(patch->intFacets, &intFacetsArray));
1864: for (i = 0; i < numIntFacets; i++) {
1865: const PetscInt cell0 = facetCells[2 * (intFacetOffset + i) + 0];
1866: const PetscInt cell1 = facetCells[2 * (intFacetOffset + i) + 1];
1867: const PetscInt *cell0idx = &dofsArray[(offset + cell0) * patch->totalDofsPerCell];
1868: const PetscInt *cell1idx = &dofsArray[(offset + cell1) * patch->totalDofsPerCell];
1869: PetscCall(MatSetValues(preallocator, patch->totalDofsPerCell, cell0idx, patch->totalDofsPerCell, cell1idx, vals, INSERT_VALUES));
1870: PetscCall(MatSetValues(preallocator, patch->totalDofsPerCell, cell1idx, patch->totalDofsPerCell, cell0idx, vals, INSERT_VALUES));
1871: }
1872: }
1874: PetscCall(PetscFree(vals));
1875: PetscCall(MatAssemblyBegin(preallocator, MAT_FINAL_ASSEMBLY));
1876: PetscCall(MatAssemblyEnd(preallocator, MAT_FINAL_ASSEMBLY));
1877: PetscCall(MatPreallocatorPreallocate(preallocator, PETSC_TRUE, *mat));
1878: PetscCall(MatDestroy(&preallocator));
1879: }
1880: PetscCall(PetscLogEventEnd(PC_Patch_Prealloc, pc, 0, 0, 0));
1881: if (withArtificial) {
1882: PetscCall(ISRestoreIndices(patch->dofsWithArtificial, &dofsArray));
1883: } else {
1884: PetscCall(ISRestoreIndices(patch->dofs, &dofsArray));
1885: }
1886: }
1887: PetscCall(MatSetUp(*mat));
1888: PetscFunctionReturn(PETSC_SUCCESS);
1889: }
1891: static PetscErrorCode PCPatchComputeFunction_DMPlex_Private(PC pc, PetscInt patchNum, Vec x, Vec F, IS cellIS, PetscInt n, const PetscInt *l2p, const PetscInt *l2pWithAll, void *ctx)
1892: {
1893: PC_PATCH *patch = (PC_PATCH *)pc->data;
1894: DM dm, plex;
1895: PetscSection s;
1896: const PetscInt *parray, *oarray;
1897: PetscInt Nf = patch->nsubspaces, Np, poff, p, f;
1899: PetscFunctionBegin;
1900: PetscCheck(!patch->precomputeElementTensors, PetscObjectComm((PetscObject)pc), PETSC_ERR_ARG_WRONGSTATE, "Precomputing element tensors not implemented with DMPlex compute operator");
1901: PetscCall(PCGetDM(pc, &dm));
1902: PetscCall(DMConvert(dm, DMPLEX, &plex));
1903: dm = plex;
1904: PetscCall(DMGetLocalSection(dm, &s));
1905: /* Set offset into patch */
1906: PetscCall(PetscSectionGetDof(patch->pointCounts, patchNum, &Np));
1907: PetscCall(PetscSectionGetOffset(patch->pointCounts, patchNum, &poff));
1908: PetscCall(ISGetIndices(patch->points, &parray));
1909: PetscCall(ISGetIndices(patch->offs, &oarray));
1910: for (f = 0; f < Nf; ++f) {
1911: for (p = 0; p < Np; ++p) {
1912: const PetscInt point = parray[poff + p];
1913: PetscInt dof;
1915: PetscCall(PetscSectionGetFieldDof(patch->patchSection, point, f, &dof));
1916: PetscCall(PetscSectionSetFieldOffset(patch->patchSection, point, f, oarray[(poff + p) * Nf + f]));
1917: if (patch->nsubspaces == 1) PetscCall(PetscSectionSetOffset(patch->patchSection, point, oarray[(poff + p) * Nf + f]));
1918: else PetscCall(PetscSectionSetOffset(patch->patchSection, point, -1));
1919: }
1920: }
1921: PetscCall(ISRestoreIndices(patch->points, &parray));
1922: PetscCall(ISRestoreIndices(patch->offs, &oarray));
1923: if (patch->viewSection) PetscCall(ObjectView((PetscObject)patch->patchSection, patch->viewerSection, patch->formatSection));
1924: PetscCall(DMPlexComputeResidual_Patch_Internal(dm, patch->patchSection, cellIS, 0.0, x, NULL, F, ctx));
1925: PetscCall(DMDestroy(&dm));
1926: PetscFunctionReturn(PETSC_SUCCESS);
1927: }
1929: PetscErrorCode PCPatchComputeFunction_Internal(PC pc, Vec x, Vec F, PetscInt point)
1930: {
1931: PC_PATCH *patch = (PC_PATCH *)pc->data;
1932: const PetscInt *dofsArray;
1933: const PetscInt *dofsArrayWithAll;
1934: const PetscInt *cellsArray;
1935: PetscInt ncell, offset, pStart, pEnd;
1937: PetscFunctionBegin;
1938: PetscCall(PetscLogEventBegin(PC_Patch_ComputeOp, pc, 0, 0, 0));
1939: PetscCheck(patch->usercomputeop, PETSC_COMM_SELF, PETSC_ERR_ARG_WRONGSTATE, "Must call PCPatchSetComputeOperator() to set callback");
1940: PetscCall(ISGetIndices(patch->dofs, &dofsArray));
1941: PetscCall(ISGetIndices(patch->dofsWithAll, &dofsArrayWithAll));
1942: PetscCall(ISGetIndices(patch->cells, &cellsArray));
1943: PetscCall(PetscSectionGetChart(patch->cellCounts, &pStart, &pEnd));
1945: point += pStart;
1946: PetscCheck(point < pEnd, PETSC_COMM_SELF, PETSC_ERR_ARG_OUTOFRANGE, "Operator point %" PetscInt_FMT " not in [%" PetscInt_FMT ", %" PetscInt_FMT ")", point, pStart, pEnd);
1948: PetscCall(PetscSectionGetDof(patch->cellCounts, point, &ncell));
1949: PetscCall(PetscSectionGetOffset(patch->cellCounts, point, &offset));
1950: if (ncell <= 0) {
1951: PetscCall(PetscLogEventEnd(PC_Patch_ComputeOp, pc, 0, 0, 0));
1952: PetscFunctionReturn(PETSC_SUCCESS);
1953: }
1954: PetscCall(VecSet(F, 0.0));
1955: /* Cannot reuse the same IS because the geometry info is being cached in it */
1956: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, ncell, cellsArray + offset, PETSC_USE_POINTER, &patch->cellIS));
1957: PetscCallBack("PCPatch callback", patch->usercomputef(pc, point, x, F, patch->cellIS, ncell * patch->totalDofsPerCell, dofsArray + offset * patch->totalDofsPerCell, dofsArrayWithAll + offset * patch->totalDofsPerCell, patch->usercomputefctx));
1958: PetscCall(ISDestroy(&patch->cellIS));
1959: PetscCall(ISRestoreIndices(patch->dofs, &dofsArray));
1960: PetscCall(ISRestoreIndices(patch->dofsWithAll, &dofsArrayWithAll));
1961: PetscCall(ISRestoreIndices(patch->cells, &cellsArray));
1962: if (patch->viewMatrix) {
1963: char name[PETSC_MAX_PATH_LEN];
1965: PetscCall(PetscSNPrintf(name, PETSC_MAX_PATH_LEN - 1, "Patch vector for Point %" PetscInt_FMT, point));
1966: PetscCall(PetscObjectSetName((PetscObject)F, name));
1967: PetscCall(ObjectView((PetscObject)F, patch->viewerMatrix, patch->formatMatrix));
1968: }
1969: PetscCall(PetscLogEventEnd(PC_Patch_ComputeOp, pc, 0, 0, 0));
1970: PetscFunctionReturn(PETSC_SUCCESS);
1971: }
1973: static PetscErrorCode PCPatchComputeOperator_DMPlex_Private(PC pc, PetscInt patchNum, Vec x, Mat J, IS cellIS, PetscInt n, const PetscInt *l2p, const PetscInt *l2pWithAll, void *ctx)
1974: {
1975: PC_PATCH *patch = (PC_PATCH *)pc->data;
1976: DM dm, plex;
1977: PetscSection s;
1978: const PetscInt *parray, *oarray;
1979: PetscInt Nf = patch->nsubspaces, Np, poff, p, f;
1981: PetscFunctionBegin;
1982: PetscCall(PCGetDM(pc, &dm));
1983: PetscCall(DMConvert(dm, DMPLEX, &plex));
1984: dm = plex;
1985: PetscCall(DMGetLocalSection(dm, &s));
1986: /* Set offset into patch */
1987: PetscCall(PetscSectionGetDof(patch->pointCounts, patchNum, &Np));
1988: PetscCall(PetscSectionGetOffset(patch->pointCounts, patchNum, &poff));
1989: PetscCall(ISGetIndices(patch->points, &parray));
1990: PetscCall(ISGetIndices(patch->offs, &oarray));
1991: for (f = 0; f < Nf; ++f) {
1992: for (p = 0; p < Np; ++p) {
1993: const PetscInt point = parray[poff + p];
1994: PetscInt dof;
1996: PetscCall(PetscSectionGetFieldDof(patch->patchSection, point, f, &dof));
1997: PetscCall(PetscSectionSetFieldOffset(patch->patchSection, point, f, oarray[(poff + p) * Nf + f]));
1998: if (patch->nsubspaces == 1) PetscCall(PetscSectionSetOffset(patch->patchSection, point, oarray[(poff + p) * Nf + f]));
1999: else PetscCall(PetscSectionSetOffset(patch->patchSection, point, -1));
2000: }
2001: }
2002: PetscCall(ISRestoreIndices(patch->points, &parray));
2003: PetscCall(ISRestoreIndices(patch->offs, &oarray));
2004: if (patch->viewSection) PetscCall(ObjectView((PetscObject)patch->patchSection, patch->viewerSection, patch->formatSection));
2005: /* TODO Shut off MatViewFromOptions() in MatAssemblyEnd() here */
2006: PetscCall(DMPlexComputeJacobian_Patch_Internal(dm, patch->patchSection, patch->patchSection, cellIS, 0.0, 0.0, x, NULL, J, J, ctx));
2007: PetscCall(DMDestroy(&dm));
2008: PetscFunctionReturn(PETSC_SUCCESS);
2009: }
2011: /* This function zeros mat on entry */
2012: PetscErrorCode PCPatchComputeOperator_Internal(PC pc, Vec x, Mat mat, PetscInt point, PetscBool withArtificial)
2013: {
2014: PC_PATCH *patch = (PC_PATCH *)pc->data;
2015: const PetscInt *dofsArray;
2016: const PetscInt *dofsArrayWithAll = NULL;
2017: const PetscInt *cellsArray;
2018: PetscInt ncell, offset, pStart, pEnd, numIntFacets, intFacetOffset;
2019: PetscBool isNonlinear;
2021: PetscFunctionBegin;
2022: PetscCall(PetscLogEventBegin(PC_Patch_ComputeOp, pc, 0, 0, 0));
2023: isNonlinear = patch->isNonlinear;
2024: PetscCheck(patch->usercomputeop, PETSC_COMM_SELF, PETSC_ERR_ARG_WRONGSTATE, "Must call PCPatchSetComputeOperator() to set callback");
2025: if (withArtificial) {
2026: PetscCall(ISGetIndices(patch->dofsWithArtificial, &dofsArray));
2027: } else {
2028: PetscCall(ISGetIndices(patch->dofs, &dofsArray));
2029: }
2030: if (isNonlinear) PetscCall(ISGetIndices(patch->dofsWithAll, &dofsArrayWithAll));
2031: PetscCall(ISGetIndices(patch->cells, &cellsArray));
2032: PetscCall(PetscSectionGetChart(patch->cellCounts, &pStart, &pEnd));
2034: point += pStart;
2035: PetscCheck(point < pEnd, PETSC_COMM_SELF, PETSC_ERR_ARG_OUTOFRANGE, "Operator point %" PetscInt_FMT " not in [%" PetscInt_FMT ", %" PetscInt_FMT ")", point, pStart, pEnd);
2037: PetscCall(PetscSectionGetDof(patch->cellCounts, point, &ncell));
2038: PetscCall(PetscSectionGetOffset(patch->cellCounts, point, &offset));
2039: if (ncell <= 0) {
2040: PetscCall(PetscLogEventEnd(PC_Patch_ComputeOp, pc, 0, 0, 0));
2041: PetscFunctionReturn(PETSC_SUCCESS);
2042: }
2043: PetscCall(MatZeroEntries(mat));
2044: if (patch->precomputeElementTensors) {
2045: PetscInt i;
2046: PetscInt ndof = patch->totalDofsPerCell;
2047: const PetscScalar *elementTensors;
2049: PetscCall(VecGetArrayRead(patch->cellMats, &elementTensors));
2050: for (i = 0; i < ncell; i++) {
2051: const PetscInt cell = cellsArray[i + offset];
2052: const PetscInt *idx = dofsArray + (offset + i) * ndof;
2053: const PetscScalar *v = elementTensors + patch->precomputedTensorLocations[cell] * ndof * ndof;
2054: PetscCall(MatSetValues(mat, ndof, idx, ndof, idx, v, ADD_VALUES));
2055: }
2056: PetscCall(VecRestoreArrayRead(patch->cellMats, &elementTensors));
2057: PetscCall(MatAssemblyBegin(mat, MAT_FINAL_ASSEMBLY));
2058: PetscCall(MatAssemblyEnd(mat, MAT_FINAL_ASSEMBLY));
2059: } else {
2060: /* Cannot reuse the same IS because the geometry info is being cached in it */
2061: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, ncell, cellsArray + offset, PETSC_USE_POINTER, &patch->cellIS));
2062: PetscCallBack("PCPatch callback",
2063: patch->usercomputeop(pc, point, x, mat, patch->cellIS, ncell * patch->totalDofsPerCell, dofsArray + offset * patch->totalDofsPerCell, PetscSafePointerPlusOffset(dofsArrayWithAll, offset * patch->totalDofsPerCell), patch->usercomputeopctx));
2064: }
2065: if (patch->usercomputeopintfacet) {
2066: PetscCall(PetscSectionGetDof(patch->intFacetCounts, point, &numIntFacets));
2067: PetscCall(PetscSectionGetOffset(patch->intFacetCounts, point, &intFacetOffset));
2068: if (numIntFacets > 0) {
2069: /* For each interior facet, grab the two cells (in local numbering, and concatenate dof numberings for those cells) */
2070: PetscInt *facetDofs = NULL, *facetDofsWithAll = NULL;
2071: const PetscInt *intFacetsArray = NULL;
2072: PetscInt idx = 0;
2073: PetscInt i, c, d;
2074: PetscInt fStart;
2075: DM dm, plex;
2076: IS facetIS = NULL;
2077: const PetscInt *facetCells = NULL;
2079: PetscCall(ISGetIndices(patch->intFacetsToPatchCell, &facetCells));
2080: PetscCall(ISGetIndices(patch->intFacets, &intFacetsArray));
2081: PetscCall(PCGetDM(pc, &dm));
2082: PetscCall(DMConvert(dm, DMPLEX, &plex));
2083: dm = plex;
2084: PetscCall(DMPlexGetHeightStratum(dm, 1, &fStart, NULL));
2085: /* FIXME: Pull this malloc out. */
2086: PetscCall(PetscMalloc1(2 * patch->totalDofsPerCell * numIntFacets, &facetDofs));
2087: if (dofsArrayWithAll) PetscCall(PetscMalloc1(2 * patch->totalDofsPerCell * numIntFacets, &facetDofsWithAll));
2088: if (patch->precomputeElementTensors) {
2089: PetscInt nFacetDof = 2 * patch->totalDofsPerCell;
2090: const PetscScalar *elementTensors;
2092: PetscCall(VecGetArrayRead(patch->intFacetMats, &elementTensors));
2094: for (i = 0; i < numIntFacets; i++) {
2095: const PetscInt facet = intFacetsArray[i + intFacetOffset];
2096: const PetscScalar *v = elementTensors + patch->precomputedIntFacetTensorLocations[facet - fStart] * nFacetDof * nFacetDof;
2097: idx = 0;
2098: /*
2099: 0--1
2100: |\-|
2101: |+\|
2102: 2--3
2103: [0, 2, 3, 0, 1, 3]
2104: */
2105: for (c = 0; c < 2; c++) {
2106: const PetscInt cell = facetCells[2 * (intFacetOffset + i) + c];
2107: for (d = 0; d < patch->totalDofsPerCell; d++) {
2108: facetDofs[idx] = dofsArray[(offset + cell) * patch->totalDofsPerCell + d];
2109: idx++;
2110: }
2111: }
2112: PetscCall(MatSetValues(mat, nFacetDof, facetDofs, nFacetDof, facetDofs, v, ADD_VALUES));
2113: }
2114: PetscCall(VecRestoreArrayRead(patch->intFacetMats, &elementTensors));
2115: } else {
2116: /*
2117: 0--1
2118: |\-|
2119: |+\|
2120: 2--3
2121: [0, 2, 3, 0, 1, 3]
2122: */
2123: for (i = 0; i < numIntFacets; i++) {
2124: for (c = 0; c < 2; c++) {
2125: const PetscInt cell = facetCells[2 * (intFacetOffset + i) + c];
2126: for (d = 0; d < patch->totalDofsPerCell; d++) {
2127: facetDofs[idx] = dofsArray[(offset + cell) * patch->totalDofsPerCell + d];
2128: if (dofsArrayWithAll) facetDofsWithAll[idx] = dofsArrayWithAll[(offset + cell) * patch->totalDofsPerCell + d];
2129: idx++;
2130: }
2131: }
2132: }
2133: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numIntFacets, intFacetsArray + intFacetOffset, PETSC_USE_POINTER, &facetIS));
2134: PetscCall(patch->usercomputeopintfacet(pc, point, x, mat, facetIS, 2 * numIntFacets * patch->totalDofsPerCell, facetDofs, facetDofsWithAll, patch->usercomputeopintfacetctx));
2135: PetscCall(ISDestroy(&facetIS));
2136: }
2137: PetscCall(ISRestoreIndices(patch->intFacetsToPatchCell, &facetCells));
2138: PetscCall(ISRestoreIndices(patch->intFacets, &intFacetsArray));
2139: PetscCall(PetscFree(facetDofs));
2140: PetscCall(PetscFree(facetDofsWithAll));
2141: PetscCall(DMDestroy(&dm));
2142: }
2143: }
2145: PetscCall(MatAssemblyBegin(mat, MAT_FINAL_ASSEMBLY));
2146: PetscCall(MatAssemblyEnd(mat, MAT_FINAL_ASSEMBLY));
2148: if (!(withArtificial || isNonlinear) && patch->denseinverse) {
2149: MatFactorInfo info;
2150: PetscBool flg;
2151: PetscCall(PetscObjectTypeCompare((PetscObject)mat, MATSEQDENSE, &flg));
2152: PetscCheck(flg, PetscObjectComm((PetscObject)pc), PETSC_ERR_ARG_WRONGSTATE, "Invalid Mat type for dense inverse");
2153: PetscCall(MatFactorInfoInitialize(&info));
2154: PetscCall(MatLUFactor(mat, NULL, NULL, &info));
2155: PetscCall(MatSeqDenseInvertFactors_Private(mat));
2156: }
2157: PetscCall(ISDestroy(&patch->cellIS));
2158: if (withArtificial) {
2159: PetscCall(ISRestoreIndices(patch->dofsWithArtificial, &dofsArray));
2160: } else {
2161: PetscCall(ISRestoreIndices(patch->dofs, &dofsArray));
2162: }
2163: if (isNonlinear) PetscCall(ISRestoreIndices(patch->dofsWithAll, &dofsArrayWithAll));
2164: PetscCall(ISRestoreIndices(patch->cells, &cellsArray));
2165: if (patch->viewMatrix) {
2166: char name[PETSC_MAX_PATH_LEN];
2168: PetscCall(PetscSNPrintf(name, PETSC_MAX_PATH_LEN - 1, "Patch matrix for Point %" PetscInt_FMT, point));
2169: PetscCall(PetscObjectSetName((PetscObject)mat, name));
2170: PetscCall(ObjectView((PetscObject)mat, patch->viewerMatrix, patch->formatMatrix));
2171: }
2172: PetscCall(PetscLogEventEnd(PC_Patch_ComputeOp, pc, 0, 0, 0));
2173: PetscFunctionReturn(PETSC_SUCCESS);
2174: }
2176: static PetscErrorCode MatSetValues_PCPatch_Private(Mat mat, PetscInt m, const PetscInt idxm[], PetscInt n, const PetscInt idxn[], const PetscScalar *v, InsertMode addv)
2177: {
2178: Vec data;
2179: PetscScalar *array;
2180: PetscInt bs, nz, i, j, cell;
2182: PetscCall(MatShellGetContext(mat, &data));
2183: PetscCall(VecGetBlockSize(data, &bs));
2184: PetscCall(VecGetSize(data, &nz));
2185: PetscCall(VecGetArray(data, &array));
2186: PetscCheck(m == n, PetscObjectComm((PetscObject)mat), PETSC_ERR_ARG_WRONG, "Only for square insertion");
2187: cell = (PetscInt)(idxm[0] / bs); /* use the fact that this is called once per cell */
2188: for (i = 0; i < m; i++) {
2189: PetscCheck(idxm[i] == idxn[i], PetscObjectComm((PetscObject)mat), PETSC_ERR_ARG_WRONG, "Row and column indices must match!");
2190: for (j = 0; j < n; j++) {
2191: const PetscScalar v_ = v[i * bs + j];
2192: /* Indexing is special to the data structure we have! */
2193: if (addv == INSERT_VALUES) {
2194: array[cell * bs * bs + i * bs + j] = v_;
2195: } else {
2196: array[cell * bs * bs + i * bs + j] += v_;
2197: }
2198: }
2199: }
2200: PetscCall(VecRestoreArray(data, &array));
2201: PetscFunctionReturn(PETSC_SUCCESS);
2202: }
2204: static PetscErrorCode PCPatchPrecomputePatchTensors_Private(PC pc)
2205: {
2206: PC_PATCH *patch = (PC_PATCH *)pc->data;
2207: const PetscInt *cellsArray;
2208: PetscInt ncell, offset;
2209: const PetscInt *dofMapArray;
2210: PetscInt i, j;
2211: IS dofMap;
2212: IS cellIS;
2213: const PetscInt ndof = patch->totalDofsPerCell;
2214: Mat vecMat;
2215: PetscInt cStart, cEnd;
2216: DM dm, plex;
2218: PetscCall(ISGetSize(patch->cells, &ncell));
2219: if (!ncell) { /* No cells to assemble over -> skip */
2220: PetscFunctionReturn(PETSC_SUCCESS);
2221: }
2223: PetscCall(PetscLogEventBegin(PC_Patch_ComputeOp, pc, 0, 0, 0));
2225: PetscCall(PCGetDM(pc, &dm));
2226: PetscCall(DMConvert(dm, DMPLEX, &plex));
2227: dm = plex;
2228: if (!patch->allCells) {
2229: PetscHSetI cells;
2230: PetscHashIter hi;
2231: PetscInt pStart, pEnd;
2232: PetscInt *allCells = NULL;
2233: PetscCall(PetscHSetICreate(&cells));
2234: PetscCall(ISGetIndices(patch->cells, &cellsArray));
2235: PetscCall(PetscSectionGetChart(patch->cellCounts, &pStart, &pEnd));
2236: for (i = pStart; i < pEnd; i++) {
2237: PetscCall(PetscSectionGetDof(patch->cellCounts, i, &ncell));
2238: PetscCall(PetscSectionGetOffset(patch->cellCounts, i, &offset));
2239: if (ncell <= 0) continue;
2240: for (j = 0; j < ncell; j++) PetscCall(PetscHSetIAdd(cells, cellsArray[offset + j]));
2241: }
2242: PetscCall(ISRestoreIndices(patch->cells, &cellsArray));
2243: PetscCall(PetscHSetIGetSize(cells, &ncell));
2244: PetscCall(PetscMalloc1(ncell, &allCells));
2245: PetscCall(DMPlexGetHeightStratum(dm, 0, &cStart, &cEnd));
2246: PetscCall(PetscMalloc1(cEnd - cStart, &patch->precomputedTensorLocations));
2247: i = 0;
2248: PetscHashIterBegin(cells, hi);
2249: while (!PetscHashIterAtEnd(cells, hi)) {
2250: PetscHashIterGetKey(cells, hi, allCells[i]);
2251: patch->precomputedTensorLocations[allCells[i]] = i;
2252: PetscHashIterNext(cells, hi);
2253: i++;
2254: }
2255: PetscCall(PetscHSetIDestroy(&cells));
2256: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, ncell, allCells, PETSC_OWN_POINTER, &patch->allCells));
2257: }
2258: PetscCall(ISGetSize(patch->allCells, &ncell));
2259: if (!patch->cellMats) {
2260: PetscCall(VecCreateSeq(PETSC_COMM_SELF, ncell * ndof * ndof, &patch->cellMats));
2261: PetscCall(VecSetBlockSize(patch->cellMats, ndof));
2262: }
2263: PetscCall(VecSet(patch->cellMats, 0));
2265: PetscCall(MatCreateShell(PETSC_COMM_SELF, ncell * ndof, ncell * ndof, ncell * ndof, ncell * ndof, (void *)patch->cellMats, &vecMat));
2266: PetscCall(MatShellSetOperation(vecMat, MATOP_SET_VALUES, (void (*)(void))&MatSetValues_PCPatch_Private));
2267: PetscCall(ISGetSize(patch->allCells, &ncell));
2268: PetscCall(ISCreateStride(PETSC_COMM_SELF, ndof * ncell, 0, 1, &dofMap));
2269: PetscCall(ISGetIndices(dofMap, &dofMapArray));
2270: PetscCall(ISGetIndices(patch->allCells, &cellsArray));
2271: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, ncell, cellsArray, PETSC_USE_POINTER, &cellIS));
2272: /* TODO: Fix for DMPlex compute op, this bypasses a lot of the machinery and just assembles every element tensor. */
2273: PetscCallBack("PCPatch callback", patch->usercomputeop(pc, -1, NULL, vecMat, cellIS, ndof * ncell, dofMapArray, NULL, patch->usercomputeopctx));
2274: PetscCall(ISDestroy(&cellIS));
2275: PetscCall(MatDestroy(&vecMat));
2276: PetscCall(ISRestoreIndices(patch->allCells, &cellsArray));
2277: PetscCall(ISRestoreIndices(dofMap, &dofMapArray));
2278: PetscCall(ISDestroy(&dofMap));
2280: if (patch->usercomputeopintfacet) {
2281: PetscInt nIntFacets;
2282: IS intFacetsIS;
2283: const PetscInt *intFacetsArray = NULL;
2284: if (!patch->allIntFacets) {
2285: PetscHSetI facets;
2286: PetscHashIter hi;
2287: PetscInt pStart, pEnd, fStart, fEnd;
2288: PetscInt *allIntFacets = NULL;
2289: PetscCall(PetscHSetICreate(&facets));
2290: PetscCall(ISGetIndices(patch->intFacets, &intFacetsArray));
2291: PetscCall(PetscSectionGetChart(patch->intFacetCounts, &pStart, &pEnd));
2292: PetscCall(DMPlexGetHeightStratum(dm, 1, &fStart, &fEnd));
2293: for (i = pStart; i < pEnd; i++) {
2294: PetscCall(PetscSectionGetDof(patch->intFacetCounts, i, &nIntFacets));
2295: PetscCall(PetscSectionGetOffset(patch->intFacetCounts, i, &offset));
2296: if (nIntFacets <= 0) continue;
2297: for (j = 0; j < nIntFacets; j++) PetscCall(PetscHSetIAdd(facets, intFacetsArray[offset + j]));
2298: }
2299: PetscCall(ISRestoreIndices(patch->intFacets, &intFacetsArray));
2300: PetscCall(PetscHSetIGetSize(facets, &nIntFacets));
2301: PetscCall(PetscMalloc1(nIntFacets, &allIntFacets));
2302: PetscCall(PetscMalloc1(fEnd - fStart, &patch->precomputedIntFacetTensorLocations));
2303: i = 0;
2304: PetscHashIterBegin(facets, hi);
2305: while (!PetscHashIterAtEnd(facets, hi)) {
2306: PetscHashIterGetKey(facets, hi, allIntFacets[i]);
2307: patch->precomputedIntFacetTensorLocations[allIntFacets[i] - fStart] = i;
2308: PetscHashIterNext(facets, hi);
2309: i++;
2310: }
2311: PetscCall(PetscHSetIDestroy(&facets));
2312: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, nIntFacets, allIntFacets, PETSC_OWN_POINTER, &patch->allIntFacets));
2313: }
2314: PetscCall(ISGetSize(patch->allIntFacets, &nIntFacets));
2315: if (!patch->intFacetMats) {
2316: PetscCall(VecCreateSeq(PETSC_COMM_SELF, nIntFacets * ndof * ndof * 4, &patch->intFacetMats));
2317: PetscCall(VecSetBlockSize(patch->intFacetMats, ndof * 2));
2318: }
2319: PetscCall(VecSet(patch->intFacetMats, 0));
2321: PetscCall(MatCreateShell(PETSC_COMM_SELF, nIntFacets * ndof * 2, nIntFacets * ndof * 2, nIntFacets * ndof * 2, nIntFacets * ndof * 2, (void *)patch->intFacetMats, &vecMat));
2322: PetscCall(MatShellSetOperation(vecMat, MATOP_SET_VALUES, (void (*)(void))&MatSetValues_PCPatch_Private));
2323: PetscCall(ISCreateStride(PETSC_COMM_SELF, 2 * ndof * nIntFacets, 0, 1, &dofMap));
2324: PetscCall(ISGetIndices(dofMap, &dofMapArray));
2325: PetscCall(ISGetIndices(patch->allIntFacets, &intFacetsArray));
2326: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, nIntFacets, intFacetsArray, PETSC_USE_POINTER, &intFacetsIS));
2327: /* TODO: Fix for DMPlex compute op, this bypasses a lot of the machinery and just assembles every element tensor. */
2328: PetscCallBack("PCPatch callback (interior facets)", patch->usercomputeopintfacet(pc, -1, NULL, vecMat, intFacetsIS, 2 * ndof * nIntFacets, dofMapArray, NULL, patch->usercomputeopintfacetctx));
2329: PetscCall(ISDestroy(&intFacetsIS));
2330: PetscCall(MatDestroy(&vecMat));
2331: PetscCall(ISRestoreIndices(patch->allIntFacets, &intFacetsArray));
2332: PetscCall(ISRestoreIndices(dofMap, &dofMapArray));
2333: PetscCall(ISDestroy(&dofMap));
2334: }
2335: PetscCall(DMDestroy(&dm));
2336: PetscCall(PetscLogEventEnd(PC_Patch_ComputeOp, pc, 0, 0, 0));
2337: PetscFunctionReturn(PETSC_SUCCESS);
2338: }
2340: PetscErrorCode PCPatch_ScatterLocal_Private(PC pc, PetscInt p, Vec x, Vec y, InsertMode mode, ScatterMode scat, PatchScatterType scattertype)
2341: {
2342: PC_PATCH *patch = (PC_PATCH *)pc->data;
2343: const PetscScalar *xArray = NULL;
2344: PetscScalar *yArray = NULL;
2345: const PetscInt *gtolArray = NULL;
2346: PetscInt dof, offset, lidx;
2348: PetscFunctionBeginHot;
2349: PetscCall(VecGetArrayRead(x, &xArray));
2350: PetscCall(VecGetArray(y, &yArray));
2351: if (scattertype == SCATTER_WITHARTIFICIAL) {
2352: PetscCall(PetscSectionGetDof(patch->gtolCountsWithArtificial, p, &dof));
2353: PetscCall(PetscSectionGetOffset(patch->gtolCountsWithArtificial, p, &offset));
2354: PetscCall(ISGetIndices(patch->gtolWithArtificial, >olArray));
2355: } else if (scattertype == SCATTER_WITHALL) {
2356: PetscCall(PetscSectionGetDof(patch->gtolCountsWithAll, p, &dof));
2357: PetscCall(PetscSectionGetOffset(patch->gtolCountsWithAll, p, &offset));
2358: PetscCall(ISGetIndices(patch->gtolWithAll, >olArray));
2359: } else {
2360: PetscCall(PetscSectionGetDof(patch->gtolCounts, p, &dof));
2361: PetscCall(PetscSectionGetOffset(patch->gtolCounts, p, &offset));
2362: PetscCall(ISGetIndices(patch->gtol, >olArray));
2363: }
2364: PetscCheck(mode != INSERT_VALUES || scat == SCATTER_FORWARD, PETSC_COMM_SELF, PETSC_ERR_ARG_INCOMP, "Can't insert if not scattering forward");
2365: PetscCheck(mode != ADD_VALUES || scat == SCATTER_REVERSE, PETSC_COMM_SELF, PETSC_ERR_ARG_INCOMP, "Can't add if not scattering reverse");
2366: for (lidx = 0; lidx < dof; ++lidx) {
2367: const PetscInt gidx = gtolArray[offset + lidx];
2369: if (mode == INSERT_VALUES) yArray[lidx] = xArray[gidx]; /* Forward */
2370: else yArray[gidx] += xArray[lidx]; /* Reverse */
2371: }
2372: if (scattertype == SCATTER_WITHARTIFICIAL) {
2373: PetscCall(ISRestoreIndices(patch->gtolWithArtificial, >olArray));
2374: } else if (scattertype == SCATTER_WITHALL) {
2375: PetscCall(ISRestoreIndices(patch->gtolWithAll, >olArray));
2376: } else {
2377: PetscCall(ISRestoreIndices(patch->gtol, >olArray));
2378: }
2379: PetscCall(VecRestoreArrayRead(x, &xArray));
2380: PetscCall(VecRestoreArray(y, &yArray));
2381: PetscFunctionReturn(PETSC_SUCCESS);
2382: }
2384: static PetscErrorCode PCSetUp_PATCH_Linear(PC pc)
2385: {
2386: PC_PATCH *patch = (PC_PATCH *)pc->data;
2387: const char *prefix;
2388: PetscInt i;
2390: PetscFunctionBegin;
2391: if (!pc->setupcalled) {
2392: PetscCheck(patch->save_operators || !patch->denseinverse, PetscObjectComm((PetscObject)pc), PETSC_ERR_ARG_WRONGSTATE, "Can't have dense inverse without save operators");
2393: if (!patch->denseinverse) {
2394: PetscCall(PetscMalloc1(patch->npatch, &patch->solver));
2395: PetscCall(PCGetOptionsPrefix(pc, &prefix));
2396: for (i = 0; i < patch->npatch; ++i) {
2397: KSP ksp;
2398: PC subpc;
2400: PetscCall(KSPCreate(PETSC_COMM_SELF, &ksp));
2401: PetscCall(KSPSetNestLevel(ksp, pc->kspnestlevel));
2402: PetscCall(KSPSetErrorIfNotConverged(ksp, pc->erroriffailure));
2403: PetscCall(KSPSetOptionsPrefix(ksp, prefix));
2404: PetscCall(KSPAppendOptionsPrefix(ksp, "sub_"));
2405: PetscCall(PetscObjectIncrementTabLevel((PetscObject)ksp, (PetscObject)pc, 1));
2406: PetscCall(KSPGetPC(ksp, &subpc));
2407: PetscCall(PetscObjectIncrementTabLevel((PetscObject)subpc, (PetscObject)pc, 1));
2408: patch->solver[i] = (PetscObject)ksp;
2409: }
2410: }
2411: }
2412: if (patch->save_operators) {
2413: if (patch->precomputeElementTensors) PetscCall(PCPatchPrecomputePatchTensors_Private(pc));
2414: for (i = 0; i < patch->npatch; ++i) {
2415: PetscCall(PCPatchComputeOperator_Internal(pc, NULL, patch->mat[i], i, PETSC_FALSE));
2416: if (!patch->denseinverse) {
2417: PetscCall(KSPSetOperators((KSP)patch->solver[i], patch->mat[i], patch->mat[i]));
2418: } else if (patch->mat[i] && !patch->densesolve) {
2419: /* Setup matmult callback */
2420: PetscCall(MatGetOperation(patch->mat[i], MATOP_MULT, (void (**)(void))&patch->densesolve));
2421: }
2422: }
2423: }
2424: if (patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) {
2425: for (i = 0; i < patch->npatch; ++i) {
2426: /* Instead of padding patch->patchUpdate with zeros to get */
2427: /* patch->patchUpdateWithArtificial and then multiplying with the matrix, */
2428: /* just get rid of the columns that correspond to the dofs with */
2429: /* artificial bcs. That's of course fairly inefficient, hopefully we */
2430: /* can just assemble the rectangular matrix in the first place. */
2431: Mat matSquare;
2432: IS rowis;
2433: PetscInt dof;
2435: PetscCall(MatGetSize(patch->mat[i], &dof, NULL));
2436: if (dof == 0) {
2437: patch->matWithArtificial[i] = NULL;
2438: continue;
2439: }
2441: PetscCall(PCPatchCreateMatrix_Private(pc, i, &matSquare, PETSC_TRUE));
2442: PetscCall(PCPatchComputeOperator_Internal(pc, NULL, matSquare, i, PETSC_TRUE));
2444: PetscCall(MatGetSize(matSquare, &dof, NULL));
2445: PetscCall(ISCreateStride(PETSC_COMM_SELF, dof, 0, 1, &rowis));
2446: if (pc->setupcalled) {
2447: PetscCall(MatCreateSubMatrix(matSquare, rowis, patch->dofMappingWithoutToWithArtificial[i], MAT_REUSE_MATRIX, &patch->matWithArtificial[i]));
2448: } else {
2449: PetscCall(MatCreateSubMatrix(matSquare, rowis, patch->dofMappingWithoutToWithArtificial[i], MAT_INITIAL_MATRIX, &patch->matWithArtificial[i]));
2450: }
2451: PetscCall(ISDestroy(&rowis));
2452: PetscCall(MatDestroy(&matSquare));
2453: }
2454: }
2455: PetscFunctionReturn(PETSC_SUCCESS);
2456: }
2458: static PetscErrorCode PCSetUp_PATCH(PC pc)
2459: {
2460: PC_PATCH *patch = (PC_PATCH *)pc->data;
2461: PetscInt i;
2462: PetscBool isNonlinear;
2463: PetscInt maxDof = -1, maxDofWithArtificial = -1;
2465: PetscFunctionBegin;
2466: if (!pc->setupcalled) {
2467: PetscInt pStart, pEnd, p;
2468: PetscInt localSize;
2470: PetscCall(PetscLogEventBegin(PC_Patch_CreatePatches, pc, 0, 0, 0));
2472: isNonlinear = patch->isNonlinear;
2473: if (!patch->nsubspaces) {
2474: DM dm, plex;
2475: PetscSection s;
2476: PetscInt cStart, cEnd, c, Nf, f, numGlobalBcs = 0, *globalBcs, *Nb, **cellDofs;
2478: PetscCall(PCGetDM(pc, &dm));
2479: PetscCheck(dm, PetscObjectComm((PetscObject)pc), PETSC_ERR_ARG_WRONG, "Must set DM for PCPATCH or call PCPatchSetDiscretisationInfo()");
2480: PetscCall(DMConvert(dm, DMPLEX, &plex));
2481: dm = plex;
2482: PetscCall(DMGetLocalSection(dm, &s));
2483: PetscCall(PetscSectionGetNumFields(s, &Nf));
2484: PetscCall(PetscSectionGetChart(s, &pStart, &pEnd));
2485: for (p = pStart; p < pEnd; ++p) {
2486: PetscInt cdof;
2487: PetscCall(PetscSectionGetConstraintDof(s, p, &cdof));
2488: numGlobalBcs += cdof;
2489: }
2490: PetscCall(DMPlexGetHeightStratum(dm, 0, &cStart, &cEnd));
2491: PetscCall(PetscMalloc3(Nf, &Nb, Nf, &cellDofs, numGlobalBcs, &globalBcs));
2492: for (f = 0; f < Nf; ++f) {
2493: PetscFE fe;
2494: PetscDualSpace sp;
2495: PetscInt cdoff = 0;
2497: PetscCall(DMGetField(dm, f, NULL, (PetscObject *)&fe));
2498: /* PetscCall(PetscFEGetNumComponents(fe, &Nc[f])); */
2499: PetscCall(PetscFEGetDualSpace(fe, &sp));
2500: PetscCall(PetscDualSpaceGetDimension(sp, &Nb[f]));
2502: PetscCall(PetscMalloc1((cEnd - cStart) * Nb[f], &cellDofs[f]));
2503: for (c = cStart; c < cEnd; ++c) {
2504: PetscInt *closure = NULL;
2505: PetscInt clSize = 0, cl;
2507: PetscCall(DMPlexGetTransitiveClosure(dm, c, PETSC_TRUE, &clSize, &closure));
2508: for (cl = 0; cl < clSize * 2; cl += 2) {
2509: const PetscInt p = closure[cl];
2510: PetscInt fdof, d, foff;
2512: PetscCall(PetscSectionGetFieldDof(s, p, f, &fdof));
2513: PetscCall(PetscSectionGetFieldOffset(s, p, f, &foff));
2514: for (d = 0; d < fdof; ++d, ++cdoff) cellDofs[f][cdoff] = foff + d;
2515: }
2516: PetscCall(DMPlexRestoreTransitiveClosure(dm, c, PETSC_TRUE, &clSize, &closure));
2517: }
2518: PetscCheck(cdoff == (cEnd - cStart) * Nb[f], PetscObjectComm((PetscObject)pc), PETSC_ERR_ARG_SIZ, "Total number of cellDofs %" PetscInt_FMT " for field %" PetscInt_FMT " should be Nc (%" PetscInt_FMT ") * cellDof (%" PetscInt_FMT ")", cdoff, f, cEnd - cStart, Nb[f]);
2519: }
2520: numGlobalBcs = 0;
2521: for (p = pStart; p < pEnd; ++p) {
2522: const PetscInt *ind;
2523: PetscInt off, cdof, d;
2525: PetscCall(PetscSectionGetOffset(s, p, &off));
2526: PetscCall(PetscSectionGetConstraintDof(s, p, &cdof));
2527: PetscCall(PetscSectionGetConstraintIndices(s, p, &ind));
2528: for (d = 0; d < cdof; ++d) globalBcs[numGlobalBcs++] = off + ind[d];
2529: }
2531: PetscCall(PCPatchSetDiscretisationInfoCombined(pc, dm, Nb, (const PetscInt **)cellDofs, numGlobalBcs, globalBcs, numGlobalBcs, globalBcs));
2532: for (f = 0; f < Nf; ++f) PetscCall(PetscFree(cellDofs[f]));
2533: PetscCall(PetscFree3(Nb, cellDofs, globalBcs));
2534: PetscCall(PCPatchSetComputeFunction(pc, PCPatchComputeFunction_DMPlex_Private, NULL));
2535: PetscCall(PCPatchSetComputeOperator(pc, PCPatchComputeOperator_DMPlex_Private, NULL));
2536: PetscCall(DMDestroy(&dm));
2537: }
2539: localSize = patch->subspaceOffsets[patch->nsubspaces];
2540: PetscCall(VecCreateSeq(PETSC_COMM_SELF, localSize, &patch->localRHS));
2541: PetscCall(VecSetUp(patch->localRHS));
2542: PetscCall(VecDuplicate(patch->localRHS, &patch->localUpdate));
2543: PetscCall(PCPatchCreateCellPatches(pc));
2544: PetscCall(PCPatchCreateCellPatchDiscretisationInfo(pc));
2546: /* OK, now build the work vectors */
2547: PetscCall(PetscSectionGetChart(patch->gtolCounts, &pStart, &pEnd));
2549: if (patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) PetscCall(PetscMalloc1(patch->npatch, &patch->dofMappingWithoutToWithArtificial));
2550: if (isNonlinear) PetscCall(PetscMalloc1(patch->npatch, &patch->dofMappingWithoutToWithAll));
2551: for (p = pStart; p < pEnd; ++p) {
2552: PetscInt dof;
2554: PetscCall(PetscSectionGetDof(patch->gtolCounts, p, &dof));
2555: maxDof = PetscMax(maxDof, dof);
2556: if (patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) {
2557: const PetscInt *gtolArray, *gtolArrayWithArtificial = NULL;
2558: PetscInt numPatchDofs, offset;
2559: PetscInt numPatchDofsWithArtificial, offsetWithArtificial;
2560: PetscInt dofWithoutArtificialCounter = 0;
2561: PetscInt *patchWithoutArtificialToWithArtificialArray;
2563: PetscCall(PetscSectionGetDof(patch->gtolCountsWithArtificial, p, &dof));
2564: maxDofWithArtificial = PetscMax(maxDofWithArtificial, dof);
2566: /* Now build the mapping that for a dof in a patch WITHOUT dofs that have artificial bcs gives the */
2567: /* the index in the patch with all dofs */
2568: PetscCall(ISGetIndices(patch->gtol, >olArray));
2570: PetscCall(PetscSectionGetDof(patch->gtolCounts, p, &numPatchDofs));
2571: if (numPatchDofs == 0) {
2572: patch->dofMappingWithoutToWithArtificial[p - pStart] = NULL;
2573: continue;
2574: }
2576: PetscCall(PetscSectionGetOffset(patch->gtolCounts, p, &offset));
2577: PetscCall(ISGetIndices(patch->gtolWithArtificial, >olArrayWithArtificial));
2578: PetscCall(PetscSectionGetDof(patch->gtolCountsWithArtificial, p, &numPatchDofsWithArtificial));
2579: PetscCall(PetscSectionGetOffset(patch->gtolCountsWithArtificial, p, &offsetWithArtificial));
2581: PetscCall(PetscMalloc1(numPatchDofs, &patchWithoutArtificialToWithArtificialArray));
2582: for (i = 0; i < numPatchDofsWithArtificial; i++) {
2583: if (gtolArrayWithArtificial[i + offsetWithArtificial] == gtolArray[offset + dofWithoutArtificialCounter]) {
2584: patchWithoutArtificialToWithArtificialArray[dofWithoutArtificialCounter] = i;
2585: dofWithoutArtificialCounter++;
2586: if (dofWithoutArtificialCounter == numPatchDofs) break;
2587: }
2588: }
2589: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numPatchDofs, patchWithoutArtificialToWithArtificialArray, PETSC_OWN_POINTER, &patch->dofMappingWithoutToWithArtificial[p - pStart]));
2590: PetscCall(ISRestoreIndices(patch->gtol, >olArray));
2591: PetscCall(ISRestoreIndices(patch->gtolWithArtificial, >olArrayWithArtificial));
2592: }
2593: }
2594: for (p = pStart; p < pEnd; ++p) {
2595: if (isNonlinear) {
2596: const PetscInt *gtolArray, *gtolArrayWithAll = NULL;
2597: PetscInt numPatchDofs, offset;
2598: PetscInt numPatchDofsWithAll, offsetWithAll;
2599: PetscInt dofWithoutAllCounter = 0;
2600: PetscInt *patchWithoutAllToWithAllArray;
2602: /* Now build the mapping that for a dof in a patch WITHOUT dofs that have artificial bcs gives the */
2603: /* the index in the patch with all dofs */
2604: PetscCall(ISGetIndices(patch->gtol, >olArray));
2606: PetscCall(PetscSectionGetDof(patch->gtolCounts, p, &numPatchDofs));
2607: if (numPatchDofs == 0) {
2608: patch->dofMappingWithoutToWithAll[p - pStart] = NULL;
2609: continue;
2610: }
2612: PetscCall(PetscSectionGetOffset(patch->gtolCounts, p, &offset));
2613: PetscCall(ISGetIndices(patch->gtolWithAll, >olArrayWithAll));
2614: PetscCall(PetscSectionGetDof(patch->gtolCountsWithAll, p, &numPatchDofsWithAll));
2615: PetscCall(PetscSectionGetOffset(patch->gtolCountsWithAll, p, &offsetWithAll));
2617: PetscCall(PetscMalloc1(numPatchDofs, &patchWithoutAllToWithAllArray));
2619: for (i = 0; i < numPatchDofsWithAll; i++) {
2620: if (gtolArrayWithAll[i + offsetWithAll] == gtolArray[offset + dofWithoutAllCounter]) {
2621: patchWithoutAllToWithAllArray[dofWithoutAllCounter] = i;
2622: dofWithoutAllCounter++;
2623: if (dofWithoutAllCounter == numPatchDofs) break;
2624: }
2625: }
2626: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numPatchDofs, patchWithoutAllToWithAllArray, PETSC_OWN_POINTER, &patch->dofMappingWithoutToWithAll[p - pStart]));
2627: PetscCall(ISRestoreIndices(patch->gtol, >olArray));
2628: PetscCall(ISRestoreIndices(patch->gtolWithAll, >olArrayWithAll));
2629: }
2630: }
2631: if (patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) {
2632: PetscCall(VecCreateSeq(PETSC_COMM_SELF, maxDofWithArtificial, &patch->patchRHSWithArtificial));
2633: PetscCall(VecSetUp(patch->patchRHSWithArtificial));
2634: }
2635: PetscCall(VecCreateSeq(PETSC_COMM_SELF, maxDof, &patch->patchRHS));
2636: PetscCall(VecSetUp(patch->patchRHS));
2637: PetscCall(VecCreateSeq(PETSC_COMM_SELF, maxDof, &patch->patchUpdate));
2638: PetscCall(VecSetUp(patch->patchUpdate));
2639: if (patch->save_operators) {
2640: PetscCall(PetscMalloc1(patch->npatch, &patch->mat));
2641: for (i = 0; i < patch->npatch; ++i) PetscCall(PCPatchCreateMatrix_Private(pc, i, &patch->mat[i], PETSC_FALSE));
2642: }
2643: PetscCall(PetscLogEventEnd(PC_Patch_CreatePatches, pc, 0, 0, 0));
2645: /* If desired, calculate weights for dof multiplicity */
2646: if (patch->partition_of_unity) {
2647: PetscScalar *input = NULL;
2648: PetscScalar *output = NULL;
2649: Vec global;
2651: PetscCall(VecDuplicate(patch->localRHS, &patch->dof_weights));
2652: if (patch->local_composition_type == PC_COMPOSITE_ADDITIVE) {
2653: for (i = 0; i < patch->npatch; ++i) {
2654: PetscInt dof;
2656: PetscCall(PetscSectionGetDof(patch->gtolCounts, i + pStart, &dof));
2657: if (dof <= 0) continue;
2658: PetscCall(VecSet(patch->patchRHS, 1.0));
2659: PetscCall(PCPatch_ScatterLocal_Private(pc, i + pStart, patch->patchRHS, patch->dof_weights, ADD_VALUES, SCATTER_REVERSE, SCATTER_INTERIOR));
2660: }
2661: } else {
2662: /* multiplicative is actually only locally multiplicative and globally additive. need the pou where the mesh decomposition overlaps */
2663: PetscCall(VecSet(patch->dof_weights, 1.0));
2664: }
2666: PetscCall(VecDuplicate(patch->dof_weights, &global));
2667: PetscCall(VecSet(global, 0.));
2669: PetscCall(VecGetArray(patch->dof_weights, &input));
2670: PetscCall(VecGetArray(global, &output));
2671: PetscCall(PetscSFReduceBegin(patch->sectionSF, MPIU_SCALAR, input, output, MPI_SUM));
2672: PetscCall(PetscSFReduceEnd(patch->sectionSF, MPIU_SCALAR, input, output, MPI_SUM));
2673: PetscCall(VecRestoreArray(patch->dof_weights, &input));
2674: PetscCall(VecRestoreArray(global, &output));
2676: PetscCall(VecReciprocal(global));
2678: PetscCall(VecGetArray(patch->dof_weights, &output));
2679: PetscCall(VecGetArray(global, &input));
2680: PetscCall(PetscSFBcastBegin(patch->sectionSF, MPIU_SCALAR, input, output, MPI_REPLACE));
2681: PetscCall(PetscSFBcastEnd(patch->sectionSF, MPIU_SCALAR, input, output, MPI_REPLACE));
2682: PetscCall(VecRestoreArray(patch->dof_weights, &output));
2683: PetscCall(VecRestoreArray(global, &input));
2684: PetscCall(VecDestroy(&global));
2685: }
2686: if (patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE && patch->save_operators && !patch->isNonlinear) PetscCall(PetscMalloc1(patch->npatch, &patch->matWithArtificial));
2687: }
2688: PetscCall((*patch->setupsolver)(pc));
2689: PetscFunctionReturn(PETSC_SUCCESS);
2690: }
2692: static PetscErrorCode PCApply_PATCH_Linear(PC pc, PetscInt i, Vec x, Vec y)
2693: {
2694: PC_PATCH *patch = (PC_PATCH *)pc->data;
2695: KSP ksp;
2696: Mat op;
2697: PetscInt m, n;
2699: PetscFunctionBegin;
2700: if (patch->denseinverse) {
2701: PetscCall((*patch->densesolve)(patch->mat[i], x, y));
2702: PetscFunctionReturn(PETSC_SUCCESS);
2703: }
2704: ksp = (KSP)patch->solver[i];
2705: if (!patch->save_operators) {
2706: Mat mat;
2708: PetscCall(PCPatchCreateMatrix_Private(pc, i, &mat, PETSC_FALSE));
2709: /* Populate operator here. */
2710: PetscCall(PCPatchComputeOperator_Internal(pc, NULL, mat, i, PETSC_FALSE));
2711: PetscCall(KSPSetOperators(ksp, mat, mat));
2712: /* Drop reference so the KSPSetOperators below will blow it away. */
2713: PetscCall(MatDestroy(&mat));
2714: }
2715: PetscCall(PetscLogEventBegin(PC_Patch_Solve, pc, 0, 0, 0));
2716: if (!ksp->setfromoptionscalled) PetscCall(KSPSetFromOptions(ksp));
2717: /* Disgusting trick to reuse work vectors */
2718: PetscCall(KSPGetOperators(ksp, &op, NULL));
2719: PetscCall(MatGetLocalSize(op, &m, &n));
2720: x->map->n = m;
2721: y->map->n = n;
2722: x->map->N = m;
2723: y->map->N = n;
2724: PetscCall(KSPSolve(ksp, x, y));
2725: PetscCall(KSPCheckSolve(ksp, pc, y));
2726: PetscCall(PetscLogEventEnd(PC_Patch_Solve, pc, 0, 0, 0));
2727: if (!patch->save_operators) {
2728: PC pc;
2729: PetscCall(KSPSetOperators(ksp, NULL, NULL));
2730: PetscCall(KSPGetPC(ksp, &pc));
2731: /* Destroy PC context too, otherwise the factored matrix hangs around. */
2732: PetscCall(PCReset(pc));
2733: }
2734: PetscFunctionReturn(PETSC_SUCCESS);
2735: }
2737: static PetscErrorCode PCUpdateMultiplicative_PATCH_Linear(PC pc, PetscInt i, PetscInt pStart)
2738: {
2739: PC_PATCH *patch = (PC_PATCH *)pc->data;
2740: Mat multMat;
2741: PetscInt n, m;
2743: PetscFunctionBegin;
2744: if (patch->save_operators) {
2745: multMat = patch->matWithArtificial[i];
2746: } else {
2747: /*Very inefficient, hopefully we can just assemble the rectangular matrix in the first place.*/
2748: Mat matSquare;
2749: PetscInt dof;
2750: IS rowis;
2751: PetscCall(PCPatchCreateMatrix_Private(pc, i, &matSquare, PETSC_TRUE));
2752: PetscCall(PCPatchComputeOperator_Internal(pc, NULL, matSquare, i, PETSC_TRUE));
2753: PetscCall(MatGetSize(matSquare, &dof, NULL));
2754: PetscCall(ISCreateStride(PETSC_COMM_SELF, dof, 0, 1, &rowis));
2755: PetscCall(MatCreateSubMatrix(matSquare, rowis, patch->dofMappingWithoutToWithArtificial[i], MAT_INITIAL_MATRIX, &multMat));
2756: PetscCall(MatDestroy(&matSquare));
2757: PetscCall(ISDestroy(&rowis));
2758: }
2759: /* Disgusting trick to reuse work vectors */
2760: PetscCall(MatGetLocalSize(multMat, &m, &n));
2761: patch->patchUpdate->map->n = n;
2762: patch->patchRHSWithArtificial->map->n = m;
2763: patch->patchUpdate->map->N = n;
2764: patch->patchRHSWithArtificial->map->N = m;
2765: PetscCall(MatMult(multMat, patch->patchUpdate, patch->patchRHSWithArtificial));
2766: PetscCall(VecScale(patch->patchRHSWithArtificial, -1.0));
2767: PetscCall(PCPatch_ScatterLocal_Private(pc, i + pStart, patch->patchRHSWithArtificial, patch->localRHS, ADD_VALUES, SCATTER_REVERSE, SCATTER_WITHARTIFICIAL));
2768: if (!patch->save_operators) PetscCall(MatDestroy(&multMat));
2769: PetscFunctionReturn(PETSC_SUCCESS);
2770: }
2772: static PetscErrorCode PCApply_PATCH(PC pc, Vec x, Vec y)
2773: {
2774: PC_PATCH *patch = (PC_PATCH *)pc->data;
2775: const PetscScalar *globalRHS = NULL;
2776: PetscScalar *localRHS = NULL;
2777: PetscScalar *globalUpdate = NULL;
2778: const PetscInt *bcNodes = NULL;
2779: PetscInt nsweep = patch->symmetrise_sweep ? 2 : 1;
2780: PetscInt start[2] = {0, 0};
2781: PetscInt end[2] = {-1, -1};
2782: const PetscInt inc[2] = {1, -1};
2783: const PetscScalar *localUpdate;
2784: const PetscInt *iterationSet;
2785: PetscInt pStart, numBcs, n, sweep, bc, j;
2787: PetscFunctionBegin;
2788: PetscCall(PetscLogEventBegin(PC_Patch_Apply, pc, 0, 0, 0));
2789: PetscCall(PetscOptionsPushCreateViewerOff(PETSC_TRUE));
2790: /* start, end, inc have 2 entries to manage a second backward sweep if we symmetrize */
2791: end[0] = patch->npatch;
2792: start[1] = patch->npatch - 1;
2793: if (patch->user_patches) {
2794: PetscCall(ISGetLocalSize(patch->iterationSet, &end[0]));
2795: start[1] = end[0] - 1;
2796: PetscCall(ISGetIndices(patch->iterationSet, &iterationSet));
2797: }
2798: /* Scatter from global space into overlapped local spaces */
2799: PetscCall(VecGetArrayRead(x, &globalRHS));
2800: PetscCall(VecGetArray(patch->localRHS, &localRHS));
2801: PetscCall(PetscSFBcastBegin(patch->sectionSF, MPIU_SCALAR, globalRHS, localRHS, MPI_REPLACE));
2802: PetscCall(PetscSFBcastEnd(patch->sectionSF, MPIU_SCALAR, globalRHS, localRHS, MPI_REPLACE));
2803: PetscCall(VecRestoreArrayRead(x, &globalRHS));
2804: PetscCall(VecRestoreArray(patch->localRHS, &localRHS));
2806: PetscCall(VecSet(patch->localUpdate, 0.0));
2807: PetscCall(PetscSectionGetChart(patch->gtolCounts, &pStart, NULL));
2808: PetscCall(PetscLogEventBegin(PC_Patch_Solve, pc, 0, 0, 0));
2809: for (sweep = 0; sweep < nsweep; sweep++) {
2810: for (j = start[sweep]; j * inc[sweep] < end[sweep] * inc[sweep]; j += inc[sweep]) {
2811: PetscInt i = patch->user_patches ? iterationSet[j] : j;
2812: PetscInt start, len;
2814: PetscCall(PetscSectionGetDof(patch->gtolCounts, i + pStart, &len));
2815: PetscCall(PetscSectionGetOffset(patch->gtolCounts, i + pStart, &start));
2816: /* TODO: Squash out these guys in the setup as well. */
2817: if (len <= 0) continue;
2818: /* TODO: Do we need different scatters for X and Y? */
2819: PetscCall(PCPatch_ScatterLocal_Private(pc, i + pStart, patch->localRHS, patch->patchRHS, INSERT_VALUES, SCATTER_FORWARD, SCATTER_INTERIOR));
2820: PetscCall((*patch->applysolver)(pc, i, patch->patchRHS, patch->patchUpdate));
2821: PetscCall(PCPatch_ScatterLocal_Private(pc, i + pStart, patch->patchUpdate, patch->localUpdate, ADD_VALUES, SCATTER_REVERSE, SCATTER_INTERIOR));
2822: if (patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) PetscCall((*patch->updatemultiplicative)(pc, i, pStart));
2823: }
2824: }
2825: PetscCall(PetscLogEventEnd(PC_Patch_Solve, pc, 0, 0, 0));
2826: if (patch->user_patches) PetscCall(ISRestoreIndices(patch->iterationSet, &iterationSet));
2827: /* XXX: should we do this on the global vector? */
2828: if (patch->partition_of_unity) PetscCall(VecPointwiseMult(patch->localUpdate, patch->localUpdate, patch->dof_weights));
2829: /* Now patch->localUpdate contains the solution of the patch solves, so we need to combine them all. */
2830: PetscCall(VecSet(y, 0.0));
2831: PetscCall(VecGetArray(y, &globalUpdate));
2832: PetscCall(VecGetArrayRead(patch->localUpdate, &localUpdate));
2833: PetscCall(PetscSFReduceBegin(patch->sectionSF, MPIU_SCALAR, localUpdate, globalUpdate, MPI_SUM));
2834: PetscCall(PetscSFReduceEnd(patch->sectionSF, MPIU_SCALAR, localUpdate, globalUpdate, MPI_SUM));
2835: PetscCall(VecRestoreArrayRead(patch->localUpdate, &localUpdate));
2837: /* Now we need to send the global BC values through */
2838: PetscCall(VecGetArrayRead(x, &globalRHS));
2839: PetscCall(ISGetSize(patch->globalBcNodes, &numBcs));
2840: PetscCall(ISGetIndices(patch->globalBcNodes, &bcNodes));
2841: PetscCall(VecGetLocalSize(x, &n));
2842: for (bc = 0; bc < numBcs; ++bc) {
2843: const PetscInt idx = bcNodes[bc];
2844: if (idx < n) globalUpdate[idx] = globalRHS[idx];
2845: }
2847: PetscCall(ISRestoreIndices(patch->globalBcNodes, &bcNodes));
2848: PetscCall(VecRestoreArrayRead(x, &globalRHS));
2849: PetscCall(VecRestoreArray(y, &globalUpdate));
2851: PetscCall(PetscOptionsPopCreateViewerOff());
2852: PetscCall(PetscLogEventEnd(PC_Patch_Apply, pc, 0, 0, 0));
2853: PetscFunctionReturn(PETSC_SUCCESS);
2854: }
2856: static PetscErrorCode PCReset_PATCH_Linear(PC pc)
2857: {
2858: PC_PATCH *patch = (PC_PATCH *)pc->data;
2859: PetscInt i;
2861: PetscFunctionBegin;
2862: if (patch->solver) {
2863: for (i = 0; i < patch->npatch; ++i) PetscCall(KSPReset((KSP)patch->solver[i]));
2864: }
2865: PetscFunctionReturn(PETSC_SUCCESS);
2866: }
2868: static PetscErrorCode PCReset_PATCH(PC pc)
2869: {
2870: PC_PATCH *patch = (PC_PATCH *)pc->data;
2871: PetscInt i;
2873: PetscFunctionBegin;
2874: PetscCall(PetscSFDestroy(&patch->sectionSF));
2875: PetscCall(PetscSectionDestroy(&patch->cellCounts));
2876: PetscCall(PetscSectionDestroy(&patch->pointCounts));
2877: PetscCall(PetscSectionDestroy(&patch->cellNumbering));
2878: PetscCall(PetscSectionDestroy(&patch->gtolCounts));
2879: PetscCall(ISDestroy(&patch->gtol));
2880: PetscCall(ISDestroy(&patch->cells));
2881: PetscCall(ISDestroy(&patch->points));
2882: PetscCall(ISDestroy(&patch->dofs));
2883: PetscCall(ISDestroy(&patch->offs));
2884: PetscCall(PetscSectionDestroy(&patch->patchSection));
2885: PetscCall(ISDestroy(&patch->ghostBcNodes));
2886: PetscCall(ISDestroy(&patch->globalBcNodes));
2887: PetscCall(PetscSectionDestroy(&patch->gtolCountsWithArtificial));
2888: PetscCall(ISDestroy(&patch->gtolWithArtificial));
2889: PetscCall(ISDestroy(&patch->dofsWithArtificial));
2890: PetscCall(ISDestroy(&patch->offsWithArtificial));
2891: PetscCall(PetscSectionDestroy(&patch->gtolCountsWithAll));
2892: PetscCall(ISDestroy(&patch->gtolWithAll));
2893: PetscCall(ISDestroy(&patch->dofsWithAll));
2894: PetscCall(ISDestroy(&patch->offsWithAll));
2895: PetscCall(VecDestroy(&patch->cellMats));
2896: PetscCall(VecDestroy(&patch->intFacetMats));
2897: PetscCall(ISDestroy(&patch->allCells));
2898: PetscCall(ISDestroy(&patch->intFacets));
2899: PetscCall(ISDestroy(&patch->extFacets));
2900: PetscCall(ISDestroy(&patch->intFacetsToPatchCell));
2901: PetscCall(PetscSectionDestroy(&patch->intFacetCounts));
2902: PetscCall(PetscSectionDestroy(&patch->extFacetCounts));
2904: if (patch->dofSection)
2905: for (i = 0; i < patch->nsubspaces; i++) PetscCall(PetscSectionDestroy(&patch->dofSection[i]));
2906: PetscCall(PetscFree(patch->dofSection));
2907: PetscCall(PetscFree(patch->bs));
2908: PetscCall(PetscFree(patch->nodesPerCell));
2909: if (patch->cellNodeMap)
2910: for (i = 0; i < patch->nsubspaces; i++) PetscCall(PetscFree(patch->cellNodeMap[i]));
2911: PetscCall(PetscFree(patch->cellNodeMap));
2912: PetscCall(PetscFree(patch->subspaceOffsets));
2914: PetscCall((*patch->resetsolver)(pc));
2916: if (patch->subspaces_to_exclude) PetscCall(PetscHSetIDestroy(&patch->subspaces_to_exclude));
2918: PetscCall(VecDestroy(&patch->localRHS));
2919: PetscCall(VecDestroy(&patch->localUpdate));
2920: PetscCall(VecDestroy(&patch->patchRHS));
2921: PetscCall(VecDestroy(&patch->patchUpdate));
2922: PetscCall(VecDestroy(&patch->dof_weights));
2923: if (patch->patch_dof_weights) {
2924: for (i = 0; i < patch->npatch; ++i) PetscCall(VecDestroy(&patch->patch_dof_weights[i]));
2925: PetscCall(PetscFree(patch->patch_dof_weights));
2926: }
2927: if (patch->mat) {
2928: for (i = 0; i < patch->npatch; ++i) PetscCall(MatDestroy(&patch->mat[i]));
2929: PetscCall(PetscFree(patch->mat));
2930: }
2931: if (patch->matWithArtificial && !patch->isNonlinear) {
2932: for (i = 0; i < patch->npatch; ++i) PetscCall(MatDestroy(&patch->matWithArtificial[i]));
2933: PetscCall(PetscFree(patch->matWithArtificial));
2934: }
2935: PetscCall(VecDestroy(&patch->patchRHSWithArtificial));
2936: if (patch->dofMappingWithoutToWithArtificial) {
2937: for (i = 0; i < patch->npatch; ++i) PetscCall(ISDestroy(&patch->dofMappingWithoutToWithArtificial[i]));
2938: PetscCall(PetscFree(patch->dofMappingWithoutToWithArtificial));
2939: }
2940: if (patch->dofMappingWithoutToWithAll) {
2941: for (i = 0; i < patch->npatch; ++i) PetscCall(ISDestroy(&patch->dofMappingWithoutToWithAll[i]));
2942: PetscCall(PetscFree(patch->dofMappingWithoutToWithAll));
2943: }
2944: PetscCall(PetscFree(patch->sub_mat_type));
2945: if (patch->userIS) {
2946: for (i = 0; i < patch->npatch; ++i) PetscCall(ISDestroy(&patch->userIS[i]));
2947: PetscCall(PetscFree(patch->userIS));
2948: }
2949: PetscCall(PetscFree(patch->precomputedTensorLocations));
2950: PetscCall(PetscFree(patch->precomputedIntFacetTensorLocations));
2952: patch->bs = NULL;
2953: patch->cellNodeMap = NULL;
2954: patch->nsubspaces = 0;
2955: PetscCall(ISDestroy(&patch->iterationSet));
2957: PetscCall(PetscViewerDestroy(&patch->viewerCells));
2958: PetscCall(PetscViewerDestroy(&patch->viewerIntFacets));
2959: PetscCall(PetscViewerDestroy(&patch->viewerPoints));
2960: PetscCall(PetscViewerDestroy(&patch->viewerSection));
2961: PetscCall(PetscViewerDestroy(&patch->viewerMatrix));
2962: PetscFunctionReturn(PETSC_SUCCESS);
2963: }
2965: static PetscErrorCode PCDestroy_PATCH_Linear(PC pc)
2966: {
2967: PC_PATCH *patch = (PC_PATCH *)pc->data;
2968: PetscInt i;
2970: PetscFunctionBegin;
2971: if (patch->solver) {
2972: for (i = 0; i < patch->npatch; ++i) PetscCall(KSPDestroy((KSP *)&patch->solver[i]));
2973: PetscCall(PetscFree(patch->solver));
2974: }
2975: PetscFunctionReturn(PETSC_SUCCESS);
2976: }
2978: static PetscErrorCode PCDestroy_PATCH(PC pc)
2979: {
2980: PC_PATCH *patch = (PC_PATCH *)pc->data;
2982: PetscFunctionBegin;
2983: PetscCall(PCReset_PATCH(pc));
2984: PetscCall((*patch->destroysolver)(pc));
2985: PetscCall(PetscFree(pc->data));
2986: PetscFunctionReturn(PETSC_SUCCESS);
2987: }
2989: static PetscErrorCode PCSetFromOptions_PATCH(PC pc, PetscOptionItems *PetscOptionsObject)
2990: {
2991: PC_PATCH *patch = (PC_PATCH *)pc->data;
2992: PCPatchConstructType patchConstructionType = PC_PATCH_STAR;
2993: char sub_mat_type[PETSC_MAX_PATH_LEN];
2994: char option[PETSC_MAX_PATH_LEN];
2995: const char *prefix;
2996: PetscBool flg, dimflg, codimflg;
2997: MPI_Comm comm;
2998: PetscInt *ifields, nfields, k;
2999: PCCompositeType loctype = PC_COMPOSITE_ADDITIVE;
3001: PetscFunctionBegin;
3002: PetscCall(PetscObjectGetComm((PetscObject)pc, &comm));
3003: PetscCall(PetscObjectGetOptionsPrefix((PetscObject)pc, &prefix));
3004: PetscOptionsHeadBegin(PetscOptionsObject, "Patch solver options");
3006: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_save_operators", patch->classname));
3007: PetscCall(PetscOptionsBool(option, "Store all patch operators for lifetime of object?", "PCPatchSetSaveOperators", patch->save_operators, &patch->save_operators, &flg));
3009: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_precompute_element_tensors", patch->classname));
3010: PetscCall(PetscOptionsBool(option, "Compute each element tensor only once?", "PCPatchSetPrecomputeElementTensors", patch->precomputeElementTensors, &patch->precomputeElementTensors, &flg));
3011: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_partition_of_unity", patch->classname));
3012: PetscCall(PetscOptionsBool(option, "Weight contributions by dof multiplicity?", "PCPatchSetPartitionOfUnity", patch->partition_of_unity, &patch->partition_of_unity, &flg));
3014: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_local_type", patch->classname));
3015: PetscCall(PetscOptionsEnum(option, "Type of local solver composition (additive or multiplicative)", "PCPatchSetLocalComposition", PCCompositeTypes, (PetscEnum)loctype, (PetscEnum *)&loctype, &flg));
3016: if (flg) PetscCall(PCPatchSetLocalComposition(pc, loctype));
3017: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_dense_inverse", patch->classname));
3018: PetscCall(PetscOptionsBool(option, "Compute inverses of patch matrices and apply directly? Ignores KSP/PC settings on patch.", "PCPatchSetDenseInverse", patch->denseinverse, &patch->denseinverse, &flg));
3019: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_construct_dim", patch->classname));
3020: PetscCall(PetscOptionsInt(option, "What dimension of mesh point to construct patches by? (0 = vertices)", "PCPATCH", patch->dim, &patch->dim, &dimflg));
3021: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_construct_codim", patch->classname));
3022: PetscCall(PetscOptionsInt(option, "What co-dimension of mesh point to construct patches by? (0 = cells)", "PCPATCH", patch->codim, &patch->codim, &codimflg));
3023: PetscCheck(!dimflg || !codimflg, comm, PETSC_ERR_ARG_WRONG, "Can only set one of dimension or co-dimension");
3025: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_construct_type", patch->classname));
3026: PetscCall(PetscOptionsEnum(option, "How should the patches be constructed?", "PCPatchSetConstructType", PCPatchConstructTypes, (PetscEnum)patchConstructionType, (PetscEnum *)&patchConstructionType, &flg));
3027: if (flg) PetscCall(PCPatchSetConstructType(pc, patchConstructionType, NULL, NULL));
3029: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_vanka_dim", patch->classname));
3030: PetscCall(PetscOptionsInt(option, "Topological dimension of entities for Vanka to ignore", "PCPATCH", patch->vankadim, &patch->vankadim, &flg));
3032: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_ignore_dim", patch->classname));
3033: PetscCall(PetscOptionsInt(option, "Topological dimension of entities for completion to ignore", "PCPATCH", patch->ignoredim, &patch->ignoredim, &flg));
3035: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_pardecomp_overlap", patch->classname));
3036: PetscCall(PetscOptionsInt(option, "What overlap should we use in construct type pardecomp?", "PCPATCH", patch->pardecomp_overlap, &patch->pardecomp_overlap, &flg));
3038: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_sub_mat_type", patch->classname));
3039: PetscCall(PetscOptionsFList(option, "Matrix type for patch solves", "PCPatchSetSubMatType", MatList, NULL, sub_mat_type, PETSC_MAX_PATH_LEN, &flg));
3040: if (flg) PetscCall(PCPatchSetSubMatType(pc, sub_mat_type));
3042: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_symmetrise_sweep", patch->classname));
3043: PetscCall(PetscOptionsBool(option, "Go start->end, end->start?", "PCPATCH", patch->symmetrise_sweep, &patch->symmetrise_sweep, &flg));
3045: /* If the user has set the number of subspaces, use that for the buffer size,
3046: otherwise use a large number */
3047: if (patch->nsubspaces <= 0) {
3048: nfields = 128;
3049: } else {
3050: nfields = patch->nsubspaces;
3051: }
3052: PetscCall(PetscMalloc1(nfields, &ifields));
3053: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_exclude_subspaces", patch->classname));
3054: PetscCall(PetscOptionsGetIntArray(((PetscObject)pc)->options, ((PetscObject)pc)->prefix, option, ifields, &nfields, &flg));
3055: PetscCheck(!flg || !(patchConstructionType == PC_PATCH_USER), comm, PETSC_ERR_ARG_INCOMP, "We cannot support excluding a subspace with user patches because we do not index patches with a mesh point");
3056: if (flg) {
3057: PetscCall(PetscHSetIClear(patch->subspaces_to_exclude));
3058: for (k = 0; k < nfields; k++) PetscCall(PetscHSetIAdd(patch->subspaces_to_exclude, ifields[k]));
3059: }
3060: PetscCall(PetscFree(ifields));
3062: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_patches_view", patch->classname));
3063: PetscCall(PetscOptionsBool(option, "Print out information during patch construction", "PCPATCH", patch->viewPatches, &patch->viewPatches, &flg));
3064: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_cells_view", patch->classname));
3065: PetscCall(PetscOptionsCreateViewer(comm, ((PetscObject)pc)->options, prefix, option, &patch->viewerCells, &patch->formatCells, &patch->viewCells));
3066: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_interior_facets_view", patch->classname));
3067: PetscCall(PetscOptionsCreateViewer(comm, ((PetscObject)pc)->options, prefix, option, &patch->viewerIntFacets, &patch->formatIntFacets, &patch->viewIntFacets));
3068: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_exterior_facets_view", patch->classname));
3069: PetscCall(PetscOptionsCreateViewer(comm, ((PetscObject)pc)->options, prefix, option, &patch->viewerExtFacets, &patch->formatExtFacets, &patch->viewExtFacets));
3070: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_points_view", patch->classname));
3071: PetscCall(PetscOptionsCreateViewer(comm, ((PetscObject)pc)->options, prefix, option, &patch->viewerPoints, &patch->formatPoints, &patch->viewPoints));
3072: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_section_view", patch->classname));
3073: PetscCall(PetscOptionsCreateViewer(comm, ((PetscObject)pc)->options, prefix, option, &patch->viewerSection, &patch->formatSection, &patch->viewSection));
3074: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_mat_view", patch->classname));
3075: PetscCall(PetscOptionsCreateViewer(comm, ((PetscObject)pc)->options, prefix, option, &patch->viewerMatrix, &patch->formatMatrix, &patch->viewMatrix));
3076: PetscOptionsHeadEnd();
3077: patch->optionsSet = PETSC_TRUE;
3078: PetscFunctionReturn(PETSC_SUCCESS);
3079: }
3081: static PetscErrorCode PCSetUpOnBlocks_PATCH(PC pc)
3082: {
3083: PC_PATCH *patch = (PC_PATCH *)pc->data;
3084: KSPConvergedReason reason;
3085: PetscInt i;
3087: PetscFunctionBegin;
3088: if (!patch->save_operators) {
3089: /* Can't do this here because the sub KSPs don't have an operator attached yet. */
3090: PetscFunctionReturn(PETSC_SUCCESS);
3091: }
3092: if (patch->denseinverse) {
3093: /* No solvers */
3094: PetscFunctionReturn(PETSC_SUCCESS);
3095: }
3096: for (i = 0; i < patch->npatch; ++i) {
3097: if (!((KSP)patch->solver[i])->setfromoptionscalled) PetscCall(KSPSetFromOptions((KSP)patch->solver[i]));
3098: PetscCall(KSPSetUp((KSP)patch->solver[i]));
3099: PetscCall(KSPGetConvergedReason((KSP)patch->solver[i], &reason));
3100: if (reason == KSP_DIVERGED_PC_FAILED) pc->failedreason = PC_SUBPC_ERROR;
3101: }
3102: PetscFunctionReturn(PETSC_SUCCESS);
3103: }
3105: static PetscErrorCode PCView_PATCH(PC pc, PetscViewer viewer)
3106: {
3107: PC_PATCH *patch = (PC_PATCH *)pc->data;
3108: PetscViewer sviewer;
3109: PetscBool isascii;
3110: PetscMPIInt rank;
3112: PetscFunctionBegin;
3113: /* TODO Redo tabbing with set tbas in new style */
3114: PetscCall(PetscObjectTypeCompare((PetscObject)viewer, PETSCVIEWERASCII, &isascii));
3115: if (!isascii) PetscFunctionReturn(PETSC_SUCCESS);
3116: PetscCallMPI(MPI_Comm_rank(PetscObjectComm((PetscObject)pc), &rank));
3117: PetscCall(PetscViewerASCIIPushTab(viewer));
3118: PetscCall(PetscViewerASCIIPrintf(viewer, "Subspace Correction preconditioner with %" PetscInt_FMT " patches\n", patch->npatch));
3119: if (patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) {
3120: PetscCall(PetscViewerASCIIPrintf(viewer, "Schwarz type: multiplicative\n"));
3121: } else {
3122: PetscCall(PetscViewerASCIIPrintf(viewer, "Schwarz type: additive\n"));
3123: }
3124: if (patch->partition_of_unity) PetscCall(PetscViewerASCIIPrintf(viewer, "Weighting by partition of unity\n"));
3125: else PetscCall(PetscViewerASCIIPrintf(viewer, "Not weighting by partition of unity\n"));
3126: if (patch->symmetrise_sweep) PetscCall(PetscViewerASCIIPrintf(viewer, "Symmetrising sweep (start->end, then end->start)\n"));
3127: else PetscCall(PetscViewerASCIIPrintf(viewer, "Not symmetrising sweep\n"));
3128: if (!patch->precomputeElementTensors) PetscCall(PetscViewerASCIIPrintf(viewer, "Not precomputing element tensors (overlapping cells rebuilt in every patch assembly)\n"));
3129: else PetscCall(PetscViewerASCIIPrintf(viewer, "Precomputing element tensors (each cell assembled only once)\n"));
3130: if (!patch->save_operators) PetscCall(PetscViewerASCIIPrintf(viewer, "Not saving patch operators (rebuilt every PCApply)\n"));
3131: else PetscCall(PetscViewerASCIIPrintf(viewer, "Saving patch operators (rebuilt every PCSetUp)\n"));
3132: if (patch->patchconstructop == PCPatchConstruct_Star) PetscCall(PetscViewerASCIIPrintf(viewer, "Patch construction operator: star\n"));
3133: else if (patch->patchconstructop == PCPatchConstruct_Vanka) PetscCall(PetscViewerASCIIPrintf(viewer, "Patch construction operator: Vanka\n"));
3134: else if (patch->patchconstructop == PCPatchConstruct_User) PetscCall(PetscViewerASCIIPrintf(viewer, "Patch construction operator: user-specified\n"));
3135: else PetscCall(PetscViewerASCIIPrintf(viewer, "Patch construction operator: unknown\n"));
3137: if (patch->denseinverse) {
3138: PetscCall(PetscViewerASCIIPrintf(viewer, "Explicitly forming dense inverse and applying patch solver via MatMult.\n"));
3139: } else {
3140: if (patch->isNonlinear) {
3141: PetscCall(PetscViewerASCIIPrintf(viewer, "SNES on patches (all same):\n"));
3142: } else {
3143: PetscCall(PetscViewerASCIIPrintf(viewer, "KSP on patches (all same):\n"));
3144: }
3145: if (patch->solver) {
3146: PetscCall(PetscViewerGetSubViewer(viewer, PETSC_COMM_SELF, &sviewer));
3147: if (rank == 0) {
3148: PetscCall(PetscViewerASCIIPushTab(sviewer));
3149: PetscCall(PetscObjectView(patch->solver[0], sviewer));
3150: PetscCall(PetscViewerASCIIPopTab(sviewer));
3151: }
3152: PetscCall(PetscViewerRestoreSubViewer(viewer, PETSC_COMM_SELF, &sviewer));
3153: } else {
3154: PetscCall(PetscViewerASCIIPushTab(viewer));
3155: PetscCall(PetscViewerASCIIPrintf(viewer, "Solver not yet set.\n"));
3156: PetscCall(PetscViewerASCIIPopTab(viewer));
3157: }
3158: }
3159: PetscCall(PetscViewerASCIIPopTab(viewer));
3160: PetscFunctionReturn(PETSC_SUCCESS);
3161: }
3163: /*MC
3164: PCPATCH - A `PC` object that encapsulates flexible definition of blocks for overlapping and non-overlapping
3165: small block additive preconditioners. Block definition is based on topology from
3166: a `DM` and equation numbering from a `PetscSection`.
3168: Options Database Keys:
3169: + -pc_patch_cells_view - Views the process local cell numbers for each patch
3170: . -pc_patch_points_view - Views the process local mesh point numbers for each patch
3171: . -pc_patch_g2l_view - Views the map between global dofs and patch local dofs for each patch
3172: . -pc_patch_patches_view - Views the global dofs associated with each patch and its boundary
3173: - -pc_patch_sub_mat_view - Views the matrix associated with each patch
3175: Level: intermediate
3177: .seealso: [](ch_ksp), `PCType`, `PCCreate()`, `PCSetType()`, `PCASM`, `PCJACOBI`, `PCPBJACOBI`, `PCVPBJACOBI`, `SNESPATCH`
3178: M*/
3179: PETSC_EXTERN PetscErrorCode PCCreate_Patch(PC pc)
3180: {
3181: PC_PATCH *patch;
3183: PetscFunctionBegin;
3184: PetscCall(PetscCitationsRegister(PCPatchCitation, &PCPatchcite));
3185: PetscCall(PetscNew(&patch));
3187: if (patch->subspaces_to_exclude) PetscCall(PetscHSetIDestroy(&patch->subspaces_to_exclude));
3188: PetscCall(PetscHSetICreate(&patch->subspaces_to_exclude));
3190: patch->classname = "pc";
3191: patch->isNonlinear = PETSC_FALSE;
3193: /* Set some defaults */
3194: patch->combined = PETSC_FALSE;
3195: patch->save_operators = PETSC_TRUE;
3196: patch->local_composition_type = PC_COMPOSITE_ADDITIVE;
3197: patch->precomputeElementTensors = PETSC_FALSE;
3198: patch->partition_of_unity = PETSC_FALSE;
3199: patch->codim = -1;
3200: patch->dim = -1;
3201: patch->vankadim = -1;
3202: patch->ignoredim = -1;
3203: patch->pardecomp_overlap = 0;
3204: patch->patchconstructop = PCPatchConstruct_Star;
3205: patch->symmetrise_sweep = PETSC_FALSE;
3206: patch->npatch = 0;
3207: patch->userIS = NULL;
3208: patch->optionsSet = PETSC_FALSE;
3209: patch->iterationSet = NULL;
3210: patch->user_patches = PETSC_FALSE;
3211: PetscCall(PetscStrallocpy(MATDENSE, (char **)&patch->sub_mat_type));
3212: patch->viewPatches = PETSC_FALSE;
3213: patch->viewCells = PETSC_FALSE;
3214: patch->viewPoints = PETSC_FALSE;
3215: patch->viewSection = PETSC_FALSE;
3216: patch->viewMatrix = PETSC_FALSE;
3217: patch->densesolve = NULL;
3218: patch->setupsolver = PCSetUp_PATCH_Linear;
3219: patch->applysolver = PCApply_PATCH_Linear;
3220: patch->resetsolver = PCReset_PATCH_Linear;
3221: patch->destroysolver = PCDestroy_PATCH_Linear;
3222: patch->updatemultiplicative = PCUpdateMultiplicative_PATCH_Linear;
3223: patch->dofMappingWithoutToWithArtificial = NULL;
3224: patch->dofMappingWithoutToWithAll = NULL;
3226: pc->data = (void *)patch;
3227: pc->ops->apply = PCApply_PATCH;
3228: pc->ops->applytranspose = NULL; /* PCApplyTranspose_PATCH; */
3229: pc->ops->setup = PCSetUp_PATCH;
3230: pc->ops->reset = PCReset_PATCH;
3231: pc->ops->destroy = PCDestroy_PATCH;
3232: pc->ops->setfromoptions = PCSetFromOptions_PATCH;
3233: pc->ops->setuponblocks = PCSetUpOnBlocks_PATCH;
3234: pc->ops->view = PCView_PATCH;
3235: pc->ops->applyrichardson = NULL;
3236: PetscFunctionReturn(PETSC_SUCCESS);
3237: }