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;
191: PetscInt i;
193: PetscFunctionBegin;
194: if (n == 1 && bs[0] == 1) {
195: patch->sectionSF = sf[0];
196: PetscCall(PetscObjectReference((PetscObject)patch->sectionSF));
197: } else {
198: PetscInt allRoots = 0, allLeaves = 0;
199: PetscInt leafOffset = 0;
200: PetscInt *ilocal = NULL;
201: PetscSFNode *iremote = NULL;
202: PetscInt *remoteOffsets = NULL;
203: PetscInt index = 0;
204: PetscHMapI rankToIndex;
205: PetscInt numRanks = 0;
206: PetscSFNode *remote = NULL;
207: PetscSF rankSF;
208: PetscInt *ranks = NULL;
209: PetscInt *offsets = NULL;
210: MPI_Datatype contig;
211: PetscHSetI ranksUniq;
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 (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 (i = 0; i < n; ++i) {
229: const PetscMPIInt *ranks = NULL;
230: PetscInt nranks, j;
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 (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 (i = 0; i < numRanks; ++i) {
244: remote[i].rank = 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 (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: PetscCallMPI(MPI_Type_contiguous(n, MPIU_INT, &contig));
266: PetscCallMPI(MPI_Type_commit(&contig));
268: PetscCall(PetscSFBcastBegin(rankSF, contig, offsets, remoteOffsets, MPI_REPLACE));
269: PetscCall(PetscSFBcastEnd(rankSF, contig, offsets, remoteOffsets, MPI_REPLACE));
270: PetscCallMPI(MPI_Type_free(&contig));
271: PetscCall(PetscFree(offsets));
272: PetscCall(PetscSFDestroy(&rankSF));
273: /* Now remoteOffsets contains the offsets on the remote
274: processes who communicate with me. So now we can
275: concatenate the list of SFs into a single one. */
276: index = 0;
277: for (i = 0; i < n; ++i) {
278: const PetscSFNode *remote = NULL;
279: const PetscInt *local = NULL;
280: PetscInt nroots, nleaves, j;
282: PetscCall(PetscSFGetGraph(sf[i], &nroots, &nleaves, &local, &remote));
283: for (j = 0; j < nleaves; ++j) {
284: PetscInt rank = remote[j].rank;
285: PetscInt idx, rootOffset, k;
287: PetscCall(PetscHMapIGet(rankToIndex, rank, &idx));
288: PetscCheck(idx != -1, PETSC_COMM_SELF, PETSC_ERR_ARG_WRONGSTATE, "Didn't find rank, huh?");
289: /* Offset on given rank for ith subspace */
290: rootOffset = remoteOffsets[n * idx + i];
291: for (k = 0; k < bs[i]; ++k) {
292: ilocal[index] = (local ? local[j] : j) * bs[i] + k + leafOffset;
293: iremote[index].rank = remote[j].rank;
294: iremote[index].index = remote[j].index * bs[i] + k + rootOffset;
295: ++index;
296: }
297: }
298: leafOffset += nleaves * bs[i];
299: }
300: PetscCall(PetscHMapIDestroy(&rankToIndex));
301: PetscCall(PetscFree(remoteOffsets));
302: PetscCall(PetscSFCreate(PetscObjectComm((PetscObject)pc), &patch->sectionSF));
303: PetscCall(PetscSFSetGraph(patch->sectionSF, allRoots, allLeaves, ilocal, PETSC_OWN_POINTER, iremote, PETSC_OWN_POINTER));
304: }
305: PetscFunctionReturn(PETSC_SUCCESS);
306: }
308: /* TODO: Docs */
309: static PetscErrorCode PCPatchGetIgnoreDim(PC pc, PetscInt *dim)
310: {
311: PC_PATCH *patch = (PC_PATCH *)pc->data;
313: PetscFunctionBegin;
314: *dim = patch->ignoredim;
315: PetscFunctionReturn(PETSC_SUCCESS);
316: }
318: /* TODO: Docs */
319: PetscErrorCode PCPatchSetSaveOperators(PC pc, PetscBool flg)
320: {
321: PC_PATCH *patch = (PC_PATCH *)pc->data;
323: PetscFunctionBegin;
324: patch->save_operators = flg;
325: PetscFunctionReturn(PETSC_SUCCESS);
326: }
328: /* TODO: Docs */
329: PetscErrorCode PCPatchGetSaveOperators(PC pc, PetscBool *flg)
330: {
331: PC_PATCH *patch = (PC_PATCH *)pc->data;
333: PetscFunctionBegin;
334: *flg = patch->save_operators;
335: PetscFunctionReturn(PETSC_SUCCESS);
336: }
338: /* TODO: Docs */
339: PetscErrorCode PCPatchSetPrecomputeElementTensors(PC pc, PetscBool flg)
340: {
341: PC_PATCH *patch = (PC_PATCH *)pc->data;
343: PetscFunctionBegin;
344: patch->precomputeElementTensors = flg;
345: PetscFunctionReturn(PETSC_SUCCESS);
346: }
348: /* TODO: Docs */
349: PetscErrorCode PCPatchGetPrecomputeElementTensors(PC pc, PetscBool *flg)
350: {
351: PC_PATCH *patch = (PC_PATCH *)pc->data;
353: PetscFunctionBegin;
354: *flg = patch->precomputeElementTensors;
355: PetscFunctionReturn(PETSC_SUCCESS);
356: }
358: /* TODO: Docs */
359: PetscErrorCode PCPatchSetPartitionOfUnity(PC pc, PetscBool flg)
360: {
361: PC_PATCH *patch = (PC_PATCH *)pc->data;
363: PetscFunctionBegin;
364: patch->partition_of_unity = flg;
365: PetscFunctionReturn(PETSC_SUCCESS);
366: }
368: /* TODO: Docs */
369: PetscErrorCode PCPatchGetPartitionOfUnity(PC pc, PetscBool *flg)
370: {
371: PC_PATCH *patch = (PC_PATCH *)pc->data;
373: PetscFunctionBegin;
374: *flg = patch->partition_of_unity;
375: PetscFunctionReturn(PETSC_SUCCESS);
376: }
378: /* TODO: Docs */
379: static PetscErrorCode PCPatchSetLocalComposition(PC pc, PCCompositeType type)
380: {
381: PC_PATCH *patch = (PC_PATCH *)pc->data;
383: PetscFunctionBegin;
384: PetscCheck(type == PC_COMPOSITE_ADDITIVE || type == PC_COMPOSITE_MULTIPLICATIVE, PetscObjectComm((PetscObject)pc), PETSC_ERR_SUP, "Only supports additive or multiplicative as the local type");
385: patch->local_composition_type = type;
386: PetscFunctionReturn(PETSC_SUCCESS);
387: }
389: /* TODO: Docs */
390: PetscErrorCode PCPatchSetSubMatType(PC pc, MatType sub_mat_type)
391: {
392: PC_PATCH *patch = (PC_PATCH *)pc->data;
394: PetscFunctionBegin;
395: if (patch->sub_mat_type) PetscCall(PetscFree(patch->sub_mat_type));
396: PetscCall(PetscStrallocpy(sub_mat_type, (char **)&patch->sub_mat_type));
397: PetscFunctionReturn(PETSC_SUCCESS);
398: }
400: /* TODO: Docs */
401: PetscErrorCode PCPatchGetSubMatType(PC pc, MatType *sub_mat_type)
402: {
403: PC_PATCH *patch = (PC_PATCH *)pc->data;
405: PetscFunctionBegin;
406: *sub_mat_type = patch->sub_mat_type;
407: PetscFunctionReturn(PETSC_SUCCESS);
408: }
410: /* TODO: Docs */
411: PetscErrorCode PCPatchSetCellNumbering(PC pc, PetscSection cellNumbering)
412: {
413: PC_PATCH *patch = (PC_PATCH *)pc->data;
415: PetscFunctionBegin;
416: patch->cellNumbering = cellNumbering;
417: PetscCall(PetscObjectReference((PetscObject)cellNumbering));
418: PetscFunctionReturn(PETSC_SUCCESS);
419: }
421: /* TODO: Docs */
422: PetscErrorCode PCPatchGetCellNumbering(PC pc, PetscSection *cellNumbering)
423: {
424: PC_PATCH *patch = (PC_PATCH *)pc->data;
426: PetscFunctionBegin;
427: *cellNumbering = patch->cellNumbering;
428: PetscFunctionReturn(PETSC_SUCCESS);
429: }
431: /* TODO: Docs */
432: PetscErrorCode PCPatchSetConstructType(PC pc, PCPatchConstructType ctype, PetscErrorCode (*func)(PC, PetscInt *, IS **, IS *, void *), void *ctx)
433: {
434: PC_PATCH *patch = (PC_PATCH *)pc->data;
436: PetscFunctionBegin;
437: patch->ctype = ctype;
438: switch (ctype) {
439: case PC_PATCH_STAR:
440: patch->user_patches = PETSC_FALSE;
441: patch->patchconstructop = PCPatchConstruct_Star;
442: break;
443: case PC_PATCH_VANKA:
444: patch->user_patches = PETSC_FALSE;
445: patch->patchconstructop = PCPatchConstruct_Vanka;
446: break;
447: case PC_PATCH_PARDECOMP:
448: patch->user_patches = PETSC_FALSE;
449: patch->patchconstructop = PCPatchConstruct_Pardecomp;
450: break;
451: case PC_PATCH_USER:
452: case PC_PATCH_PYTHON:
453: patch->user_patches = PETSC_TRUE;
454: patch->patchconstructop = PCPatchConstruct_User;
455: if (func) {
456: patch->userpatchconstructionop = func;
457: patch->userpatchconstructctx = ctx;
458: }
459: break;
460: default:
461: SETERRQ(PetscObjectComm((PetscObject)pc), PETSC_ERR_USER, "Unknown patch construction type %" PetscInt_FMT, (PetscInt)patch->ctype);
462: }
463: PetscFunctionReturn(PETSC_SUCCESS);
464: }
466: /* TODO: Docs */
467: PetscErrorCode PCPatchGetConstructType(PC pc, PCPatchConstructType *ctype, PetscErrorCode (**func)(PC, PetscInt *, IS **, IS *, void *), void **ctx)
468: {
469: PC_PATCH *patch = (PC_PATCH *)pc->data;
471: PetscFunctionBegin;
472: *ctype = patch->ctype;
473: switch (patch->ctype) {
474: case PC_PATCH_STAR:
475: case PC_PATCH_VANKA:
476: case PC_PATCH_PARDECOMP:
477: break;
478: case PC_PATCH_USER:
479: case PC_PATCH_PYTHON:
480: *func = patch->userpatchconstructionop;
481: *ctx = patch->userpatchconstructctx;
482: break;
483: default:
484: SETERRQ(PetscObjectComm((PetscObject)pc), PETSC_ERR_USER, "Unknown patch construction type %" PetscInt_FMT, (PetscInt)patch->ctype);
485: }
486: PetscFunctionReturn(PETSC_SUCCESS);
487: }
489: /* TODO: Docs */
490: 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)
491: {
492: PC_PATCH *patch = (PC_PATCH *)pc->data;
493: DM dm, plex;
494: PetscSF *sfs;
495: PetscInt cStart, cEnd, i, j;
497: PetscFunctionBegin;
498: PetscCall(PCGetDM(pc, &dm));
499: PetscCall(DMConvert(dm, DMPLEX, &plex));
500: dm = plex;
501: PetscCall(DMPlexGetHeightStratum(dm, 0, &cStart, &cEnd));
502: PetscCall(PetscMalloc1(nsubspaces, &sfs));
503: PetscCall(PetscMalloc1(nsubspaces, &patch->dofSection));
504: PetscCall(PetscMalloc1(nsubspaces, &patch->bs));
505: PetscCall(PetscMalloc1(nsubspaces, &patch->nodesPerCell));
506: PetscCall(PetscMalloc1(nsubspaces, &patch->cellNodeMap));
507: PetscCall(PetscMalloc1(nsubspaces + 1, &patch->subspaceOffsets));
509: patch->nsubspaces = nsubspaces;
510: patch->totalDofsPerCell = 0;
511: for (i = 0; i < nsubspaces; ++i) {
512: PetscCall(DMGetLocalSection(dms[i], &patch->dofSection[i]));
513: PetscCall(PetscObjectReference((PetscObject)patch->dofSection[i]));
514: PetscCall(DMGetSectionSF(dms[i], &sfs[i]));
515: patch->bs[i] = bs[i];
516: patch->nodesPerCell[i] = nodesPerCell[i];
517: patch->totalDofsPerCell += nodesPerCell[i] * bs[i];
518: PetscCall(PetscMalloc1((cEnd - cStart) * nodesPerCell[i], &patch->cellNodeMap[i]));
519: for (j = 0; j < (cEnd - cStart) * nodesPerCell[i]; ++j) patch->cellNodeMap[i][j] = cellNodeMap[i][j];
520: patch->subspaceOffsets[i] = subspaceOffsets[i];
521: }
522: PetscCall(PCPatchCreateDefaultSF_Private(pc, nsubspaces, sfs, patch->bs));
523: PetscCall(PetscFree(sfs));
525: patch->subspaceOffsets[nsubspaces] = subspaceOffsets[nsubspaces];
526: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numGhostBcs, ghostBcNodes, PETSC_COPY_VALUES, &patch->ghostBcNodes));
527: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numGlobalBcs, globalBcNodes, PETSC_COPY_VALUES, &patch->globalBcNodes));
528: PetscCall(DMDestroy(&dm));
529: PetscFunctionReturn(PETSC_SUCCESS);
530: }
532: /* TODO: Docs */
533: static PetscErrorCode PCPatchSetDiscretisationInfoCombined(PC pc, DM dm, PetscInt *nodesPerCell, const PetscInt **cellNodeMap, PetscInt numGhostBcs, const PetscInt *ghostBcNodes, PetscInt numGlobalBcs, const PetscInt *globalBcNodes)
534: {
535: PC_PATCH *patch = (PC_PATCH *)pc->data;
536: PetscInt cStart, cEnd, i, j;
538: PetscFunctionBegin;
539: patch->combined = PETSC_TRUE;
540: PetscCall(DMPlexGetHeightStratum(dm, 0, &cStart, &cEnd));
541: PetscCall(DMGetNumFields(dm, &patch->nsubspaces));
542: PetscCall(PetscCalloc1(patch->nsubspaces, &patch->dofSection));
543: PetscCall(PetscMalloc1(patch->nsubspaces, &patch->bs));
544: PetscCall(PetscMalloc1(patch->nsubspaces, &patch->nodesPerCell));
545: PetscCall(PetscMalloc1(patch->nsubspaces, &patch->cellNodeMap));
546: PetscCall(PetscCalloc1(patch->nsubspaces + 1, &patch->subspaceOffsets));
547: PetscCall(DMGetLocalSection(dm, &patch->dofSection[0]));
548: PetscCall(PetscObjectReference((PetscObject)patch->dofSection[0]));
549: PetscCall(PetscSectionGetStorageSize(patch->dofSection[0], &patch->subspaceOffsets[patch->nsubspaces]));
550: patch->totalDofsPerCell = 0;
551: for (i = 0; i < patch->nsubspaces; ++i) {
552: patch->bs[i] = 1;
553: patch->nodesPerCell[i] = nodesPerCell[i];
554: patch->totalDofsPerCell += nodesPerCell[i];
555: PetscCall(PetscMalloc1((cEnd - cStart) * nodesPerCell[i], &patch->cellNodeMap[i]));
556: for (j = 0; j < (cEnd - cStart) * nodesPerCell[i]; ++j) patch->cellNodeMap[i][j] = cellNodeMap[i][j];
557: }
558: PetscCall(DMGetSectionSF(dm, &patch->sectionSF));
559: PetscCall(PetscObjectReference((PetscObject)patch->sectionSF));
560: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numGhostBcs, ghostBcNodes, PETSC_COPY_VALUES, &patch->ghostBcNodes));
561: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numGlobalBcs, globalBcNodes, PETSC_COPY_VALUES, &patch->globalBcNodes));
562: PetscFunctionReturn(PETSC_SUCCESS);
563: }
565: /*@C
566: PCPatchSetComputeFunction - Set the callback function used to compute patch residuals
568: Logically Collective
570: Input Parameters:
571: + pc - The `PC`
572: . func - The callback function
573: - ctx - The user context
575: Calling sequence of `func`:
576: + pc - The `PC`
577: . point - The point
578: . x - The input solution (not used in linear problems)
579: . f - The patch residual vector
580: . cellIS - An array of the cell numbers
581: . n - The size of `dofsArray`
582: . dofsArray - The dofmap for the dofs to be solved for
583: . dofsArrayWithAll - The dofmap for all dofs on the patch
584: - ctx - The user context
586: Level: advanced
588: Note:
589: The entries of `f` (the output residual vector) have been set to zero before the call.
591: .seealso: [](ch_ksp), `PCPatchSetComputeOperator()`, `PCPatchGetComputeOperator()`, `PCPatchSetDiscretisationInfo()`, `PCPatchSetComputeFunctionInteriorFacets()`
592: @*/
593: 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)
594: {
595: PC_PATCH *patch = (PC_PATCH *)pc->data;
597: PetscFunctionBegin;
598: patch->usercomputef = func;
599: patch->usercomputefctx = ctx;
600: PetscFunctionReturn(PETSC_SUCCESS);
601: }
603: /*@C
604: PCPatchSetComputeFunctionInteriorFacets - Set the callback function used to compute facet integrals for patch residuals
606: Logically Collective
608: Input Parameters:
609: + pc - The `PC`
610: . func - The callback function
611: - ctx - The user context
613: Calling sequence of `func`:
614: + pc - The `PC`
615: . point - The point
616: . x - The input solution (not used in linear problems)
617: . f - The patch residual vector
618: . facetIS - An array of the facet numbers
619: . n - The size of `dofsArray`
620: . dofsArray - The dofmap for the dofs to be solved for
621: . dofsArrayWithAll - The dofmap for all dofs on the patch
622: - ctx - The user context
624: Level: advanced
626: Note:
627: The entries of `f` (the output residual vector) have been set to zero before the call.
629: .seealso: [](ch_ksp), `PCPatchSetComputeOperator()`, `PCPatchGetComputeOperator()`, `PCPatchSetDiscretisationInfo()`, `PCPatchSetComputeFunction()`
630: @*/
631: 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)
632: {
633: PC_PATCH *patch = (PC_PATCH *)pc->data;
635: PetscFunctionBegin;
636: patch->usercomputefintfacet = func;
637: patch->usercomputefintfacetctx = ctx;
638: PetscFunctionReturn(PETSC_SUCCESS);
639: }
641: /*@C
642: PCPatchSetComputeOperator - Set the callback function used to compute patch matrices
644: Logically Collective
646: Input Parameters:
647: + pc - The `PC`
648: . func - The callback function
649: - ctx - The user context
651: Calling sequence of `func`:
652: + pc - The `PC`
653: . point - The point
654: . x - The input solution (not used in linear problems)
655: . mat - The patch matrix
656: . facetIS - An array of the cell numbers
657: . n - The size of `dofsArray`
658: . dofsArray - The dofmap for the dofs to be solved for
659: . dofsArrayWithAll - The dofmap for all dofs on the patch
660: - ctx - The user context
662: Level: advanced
664: Note:
665: The matrix entries have been set to zero before the call.
667: .seealso: [](ch_ksp), `PCPatchGetComputeOperator()`, `PCPatchSetComputeFunction()`, `PCPatchSetDiscretisationInfo()`
668: @*/
669: 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)
670: {
671: PC_PATCH *patch = (PC_PATCH *)pc->data;
673: PetscFunctionBegin;
674: patch->usercomputeop = func;
675: patch->usercomputeopctx = ctx;
676: PetscFunctionReturn(PETSC_SUCCESS);
677: }
679: /*@C
680: PCPatchSetComputeOperatorInteriorFacets - Set the callback function used to compute facet integrals for patch matrices
682: Logically Collective
684: Input Parameters:
685: + pc - The `PC`
686: . func - The callback function
687: - ctx - The user context
689: Calling sequence of `func`:
690: + pc - The `PC`
691: . point - The point
692: . x - The input solution (not used in linear problems)
693: . mat - The patch matrix
694: . facetIS - An array of the facet numbers
695: . n - The size of `dofsArray`
696: . dofsArray - The dofmap for the dofs to be solved for
697: . dofsArrayWithAll - The dofmap for all dofs on the patch
698: - ctx - The user context
700: Level: advanced
702: Note:
703: The matrix entries have been set to zero before the call.
705: .seealso: [](ch_ksp), `PCPatchGetComputeOperator()`, `PCPatchSetComputeFunction()`, `PCPatchSetDiscretisationInfo()`
706: @*/
707: 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)
708: {
709: PC_PATCH *patch = (PC_PATCH *)pc->data;
711: PetscFunctionBegin;
712: patch->usercomputeopintfacet = func;
713: patch->usercomputeopintfacetctx = ctx;
714: PetscFunctionReturn(PETSC_SUCCESS);
715: }
717: /* On entry, ht contains the topological entities whose dofs we are responsible for solving for;
718: on exit, cht contains all the topological entities we need to compute their residuals.
719: In full generality this should incorporate knowledge of the sparsity pattern of the matrix;
720: here we assume a standard FE sparsity pattern.*/
721: /* TODO: Use DMPlexGetAdjacency() */
722: static PetscErrorCode PCPatchCompleteCellPatch(PC pc, PetscHSetI ht, PetscHSetI cht)
723: {
724: DM dm, plex;
725: PC_PATCH *patch = (PC_PATCH *)pc->data;
726: PetscHashIter hi;
727: PetscInt point;
728: PetscInt *star = NULL, *closure = NULL;
729: PetscInt ignoredim, iStart = 0, iEnd = -1, starSize, closureSize, si, ci;
730: PetscInt *fStar = NULL, *fClosure = NULL;
731: PetscInt fBegin, fEnd, fsi, fci, fStarSize, fClosureSize;
733: PetscFunctionBegin;
734: PetscCall(PCGetDM(pc, &dm));
735: PetscCall(DMConvert(dm, DMPLEX, &plex));
736: dm = plex;
737: PetscCall(DMPlexGetHeightStratum(dm, 1, &fBegin, &fEnd));
738: PetscCall(PCPatchGetIgnoreDim(pc, &ignoredim));
739: if (ignoredim >= 0) PetscCall(DMPlexGetDepthStratum(dm, ignoredim, &iStart, &iEnd));
740: PetscCall(PetscHSetIClear(cht));
741: PetscHashIterBegin(ht, hi);
742: while (!PetscHashIterAtEnd(ht, hi)) {
743: PetscHashIterGetKey(ht, hi, point);
744: PetscHashIterNext(ht, hi);
746: /* Loop over all the cells that this point connects to */
747: PetscCall(DMPlexGetTransitiveClosure(dm, point, PETSC_FALSE, &starSize, &star));
748: for (si = 0; si < starSize * 2; si += 2) {
749: const PetscInt ownedpoint = star[si];
750: /* TODO Check for point in cht before running through closure again */
751: /* now loop over all entities in the closure of that cell */
752: PetscCall(DMPlexGetTransitiveClosure(dm, ownedpoint, PETSC_TRUE, &closureSize, &closure));
753: for (ci = 0; ci < closureSize * 2; ci += 2) {
754: const PetscInt seenpoint = closure[ci];
755: if (ignoredim >= 0 && seenpoint >= iStart && seenpoint < iEnd) continue;
756: PetscCall(PetscHSetIAdd(cht, seenpoint));
757: /* Facet integrals couple dofs across facets, so in that case for each of
758: the facets we need to add all dofs on the other side of the facet to
759: the seen dofs. */
760: if (patch->usercomputeopintfacet) {
761: if (fBegin <= seenpoint && seenpoint < fEnd) {
762: PetscCall(DMPlexGetTransitiveClosure(dm, seenpoint, PETSC_FALSE, &fStarSize, &fStar));
763: for (fsi = 0; fsi < fStarSize * 2; fsi += 2) {
764: PetscCall(DMPlexGetTransitiveClosure(dm, fStar[fsi], PETSC_TRUE, &fClosureSize, &fClosure));
765: for (fci = 0; fci < fClosureSize * 2; fci += 2) PetscCall(PetscHSetIAdd(cht, fClosure[fci]));
766: PetscCall(DMPlexRestoreTransitiveClosure(dm, fStar[fsi], PETSC_TRUE, NULL, &fClosure));
767: }
768: PetscCall(DMPlexRestoreTransitiveClosure(dm, seenpoint, PETSC_FALSE, NULL, &fStar));
769: }
770: }
771: }
772: PetscCall(DMPlexRestoreTransitiveClosure(dm, ownedpoint, PETSC_TRUE, NULL, &closure));
773: }
774: PetscCall(DMPlexRestoreTransitiveClosure(dm, point, PETSC_FALSE, NULL, &star));
775: }
776: PetscCall(DMDestroy(&dm));
777: PetscFunctionReturn(PETSC_SUCCESS);
778: }
780: static PetscErrorCode PCPatchGetGlobalDofs(PC pc, PetscSection dofSection[], PetscInt f, PetscBool combined, PetscInt p, PetscInt *dof, PetscInt *off)
781: {
782: PetscFunctionBegin;
783: if (combined) {
784: if (f < 0) {
785: if (dof) PetscCall(PetscSectionGetDof(dofSection[0], p, dof));
786: if (off) PetscCall(PetscSectionGetOffset(dofSection[0], p, off));
787: } else {
788: if (dof) PetscCall(PetscSectionGetFieldDof(dofSection[0], p, f, dof));
789: if (off) PetscCall(PetscSectionGetFieldOffset(dofSection[0], p, f, off));
790: }
791: } else {
792: if (f < 0) {
793: PC_PATCH *patch = (PC_PATCH *)pc->data;
794: PetscInt fdof, g;
796: if (dof) {
797: *dof = 0;
798: for (g = 0; g < patch->nsubspaces; ++g) {
799: PetscCall(PetscSectionGetDof(dofSection[g], p, &fdof));
800: *dof += fdof;
801: }
802: }
803: if (off) {
804: *off = 0;
805: for (g = 0; g < patch->nsubspaces; ++g) {
806: PetscCall(PetscSectionGetOffset(dofSection[g], p, &fdof));
807: *off += fdof;
808: }
809: }
810: } else {
811: if (dof) PetscCall(PetscSectionGetDof(dofSection[f], p, dof));
812: if (off) PetscCall(PetscSectionGetOffset(dofSection[f], p, off));
813: }
814: }
815: PetscFunctionReturn(PETSC_SUCCESS);
816: }
818: /* Given a hash table with a set of topological entities (pts), compute the degrees of
819: freedom in global concatenated numbering on those entities.
820: For Vanka smoothing, this needs to do something special: ignore dofs of the
821: constraint subspace on entities that aren't the base entity we're building the patch
822: around. */
823: static PetscErrorCode PCPatchGetPointDofs(PC pc, PetscHSetI pts, PetscHSetI dofs, PetscInt base, PetscHSetI *subspaces_to_exclude)
824: {
825: PC_PATCH *patch = (PC_PATCH *)pc->data;
826: PetscHashIter hi;
827: PetscInt ldof, loff;
828: PetscInt k, p;
830: PetscFunctionBegin;
831: PetscCall(PetscHSetIClear(dofs));
832: for (k = 0; k < patch->nsubspaces; ++k) {
833: PetscInt subspaceOffset = patch->subspaceOffsets[k];
834: PetscInt bs = patch->bs[k];
835: PetscInt j, l;
837: if (subspaces_to_exclude != NULL) {
838: PetscBool should_exclude_k = PETSC_FALSE;
839: PetscCall(PetscHSetIHas(*subspaces_to_exclude, k, &should_exclude_k));
840: if (should_exclude_k) {
841: /* only get this subspace dofs at the base entity, not any others */
842: PetscCall(PCPatchGetGlobalDofs(pc, patch->dofSection, k, patch->combined, base, &ldof, &loff));
843: if (0 == ldof) continue;
844: for (j = loff; j < ldof + loff; ++j) {
845: for (l = 0; l < bs; ++l) {
846: PetscInt dof = bs * j + l + subspaceOffset;
847: PetscCall(PetscHSetIAdd(dofs, dof));
848: }
849: }
850: continue; /* skip the other dofs of this subspace */
851: }
852: }
854: PetscHashIterBegin(pts, hi);
855: while (!PetscHashIterAtEnd(pts, hi)) {
856: PetscHashIterGetKey(pts, hi, p);
857: PetscHashIterNext(pts, hi);
858: PetscCall(PCPatchGetGlobalDofs(pc, patch->dofSection, k, patch->combined, p, &ldof, &loff));
859: if (0 == ldof) continue;
860: for (j = loff; j < ldof + loff; ++j) {
861: for (l = 0; l < bs; ++l) {
862: PetscInt dof = bs * j + l + subspaceOffset;
863: PetscCall(PetscHSetIAdd(dofs, dof));
864: }
865: }
866: }
867: }
868: PetscFunctionReturn(PETSC_SUCCESS);
869: }
871: /* Given two hash tables A and B, compute the keys in B that are not in A, and put them in C */
872: static PetscErrorCode PCPatchComputeSetDifference_Private(PetscHSetI A, PetscHSetI B, PetscHSetI C)
873: {
874: PetscHashIter hi;
875: PetscInt key;
876: PetscBool flg;
878: PetscFunctionBegin;
879: PetscCall(PetscHSetIClear(C));
880: PetscHashIterBegin(B, hi);
881: while (!PetscHashIterAtEnd(B, hi)) {
882: PetscHashIterGetKey(B, hi, key);
883: PetscHashIterNext(B, hi);
884: PetscCall(PetscHSetIHas(A, key, &flg));
885: if (!flg) PetscCall(PetscHSetIAdd(C, key));
886: }
887: PetscFunctionReturn(PETSC_SUCCESS);
888: }
890: // PetscClangLinter pragma disable: -fdoc-sowing-chars
891: /*
892: PCPatchCreateCellPatches - create patches.
894: Input Parameter:
895: . dm - The DMPlex object defining the mesh
897: Output Parameters:
898: + cellCounts - Section with counts of cells around each vertex
899: . cells - IS of the cell point indices of cells in each patch
900: . pointCounts - Section with counts of cells around each vertex
901: - point - IS of the cell point indices of cells in each patch
902: */
903: static PetscErrorCode PCPatchCreateCellPatches(PC pc)
904: {
905: PC_PATCH *patch = (PC_PATCH *)pc->data;
906: DMLabel ghost = NULL;
907: DM dm, plex;
908: PetscHSetI ht = NULL, cht = NULL;
909: PetscSection cellCounts, pointCounts, intFacetCounts, extFacetCounts;
910: PetscInt *cellsArray, *pointsArray, *intFacetsArray, *extFacetsArray, *intFacetsToPatchCell;
911: PetscInt numCells, numPoints, numIntFacets, numExtFacets;
912: const PetscInt *leaves;
913: PetscInt nleaves, pStart, pEnd, cStart, cEnd, vStart, vEnd, fStart, fEnd, v;
914: PetscBool isFiredrake;
916: PetscFunctionBegin;
917: /* Used to keep track of the cells in the patch. */
918: PetscCall(PetscHSetICreate(&ht));
919: PetscCall(PetscHSetICreate(&cht));
921: PetscCall(PCGetDM(pc, &dm));
922: PetscCheck(dm, PetscObjectComm((PetscObject)pc), PETSC_ERR_ARG_WRONGSTATE, "DM not yet set on patch PC");
923: PetscCall(DMConvert(dm, DMPLEX, &plex));
924: dm = plex;
925: PetscCall(DMPlexGetChart(dm, &pStart, &pEnd));
926: PetscCall(DMPlexGetHeightStratum(dm, 0, &cStart, &cEnd));
928: if (patch->user_patches) {
929: PetscCall(patch->userpatchconstructionop(pc, &patch->npatch, &patch->userIS, &patch->iterationSet, patch->userpatchconstructctx));
930: vStart = 0;
931: vEnd = patch->npatch;
932: } else if (patch->ctype == PC_PATCH_PARDECOMP) {
933: vStart = 0;
934: vEnd = 1;
935: } else if (patch->codim < 0) {
936: if (patch->dim < 0) PetscCall(DMPlexGetDepthStratum(dm, 0, &vStart, &vEnd));
937: else PetscCall(DMPlexGetDepthStratum(dm, patch->dim, &vStart, &vEnd));
938: } else PetscCall(DMPlexGetHeightStratum(dm, patch->codim, &vStart, &vEnd));
939: patch->npatch = vEnd - vStart;
941: /* These labels mark the owned points. We only create patches around points that this process owns. */
942: PetscCall(DMHasLabel(dm, "pyop2_ghost", &isFiredrake));
943: if (isFiredrake) {
944: PetscCall(DMGetLabel(dm, "pyop2_ghost", &ghost));
945: PetscCall(DMLabelCreateIndex(ghost, pStart, pEnd));
946: } else {
947: PetscSF sf;
949: PetscCall(DMGetPointSF(dm, &sf));
950: PetscCall(PetscSFGetGraph(sf, NULL, &nleaves, &leaves, NULL));
951: nleaves = PetscMax(nleaves, 0);
952: }
954: PetscCall(PetscSectionCreate(PETSC_COMM_SELF, &patch->cellCounts));
955: PetscCall(PetscObjectSetName((PetscObject)patch->cellCounts, "Patch Cell Layout"));
956: cellCounts = patch->cellCounts;
957: PetscCall(PetscSectionSetChart(cellCounts, vStart, vEnd));
958: PetscCall(PetscSectionCreate(PETSC_COMM_SELF, &patch->pointCounts));
959: PetscCall(PetscObjectSetName((PetscObject)patch->pointCounts, "Patch Point Layout"));
960: pointCounts = patch->pointCounts;
961: PetscCall(PetscSectionSetChart(pointCounts, vStart, vEnd));
962: PetscCall(PetscSectionCreate(PETSC_COMM_SELF, &patch->extFacetCounts));
963: PetscCall(PetscObjectSetName((PetscObject)patch->extFacetCounts, "Patch Exterior Facet Layout"));
964: extFacetCounts = patch->extFacetCounts;
965: PetscCall(PetscSectionSetChart(extFacetCounts, vStart, vEnd));
966: PetscCall(PetscSectionCreate(PETSC_COMM_SELF, &patch->intFacetCounts));
967: PetscCall(PetscObjectSetName((PetscObject)patch->intFacetCounts, "Patch Interior Facet Layout"));
968: intFacetCounts = patch->intFacetCounts;
969: PetscCall(PetscSectionSetChart(intFacetCounts, vStart, vEnd));
970: /* Count cells and points in the patch surrounding each entity */
971: PetscCall(DMPlexGetHeightStratum(dm, 1, &fStart, &fEnd));
972: for (v = vStart; v < vEnd; ++v) {
973: PetscHashIter hi;
974: PetscInt chtSize, loc = -1;
975: PetscBool flg;
977: if (!patch->user_patches && patch->ctype != PC_PATCH_PARDECOMP) {
978: if (ghost) PetscCall(DMLabelHasPoint(ghost, v, &flg));
979: else {
980: PetscCall(PetscFindInt(v, nleaves, leaves, &loc));
981: flg = loc >= 0 ? PETSC_TRUE : PETSC_FALSE;
982: }
983: /* Not an owned entity, don't make a cell patch. */
984: if (flg) continue;
985: }
987: PetscCall(patch->patchconstructop((void *)patch, dm, v, ht));
988: PetscCall(PCPatchCompleteCellPatch(pc, ht, cht));
989: PetscCall(PetscHSetIGetSize(cht, &chtSize));
990: /* empty patch, continue */
991: if (chtSize == 0) continue;
993: /* safe because size(cht) > 0 from above */
994: PetscHashIterBegin(cht, hi);
995: while (!PetscHashIterAtEnd(cht, hi)) {
996: PetscInt point, pdof;
998: PetscHashIterGetKey(cht, hi, point);
999: if (fStart <= point && point < fEnd) {
1000: const PetscInt *support;
1001: PetscInt supportSize, p;
1002: PetscBool interior = PETSC_TRUE;
1003: PetscCall(DMPlexGetSupport(dm, point, &support));
1004: PetscCall(DMPlexGetSupportSize(dm, point, &supportSize));
1005: if (supportSize == 1) {
1006: interior = PETSC_FALSE;
1007: } else {
1008: for (p = 0; p < supportSize; p++) {
1009: PetscBool found;
1010: /* FIXME: can I do this while iterating over cht? */
1011: PetscCall(PetscHSetIHas(cht, support[p], &found));
1012: if (!found) {
1013: interior = PETSC_FALSE;
1014: break;
1015: }
1016: }
1017: }
1018: if (interior) {
1019: PetscCall(PetscSectionAddDof(intFacetCounts, v, 1));
1020: } else {
1021: PetscCall(PetscSectionAddDof(extFacetCounts, v, 1));
1022: }
1023: }
1024: PetscCall(PCPatchGetGlobalDofs(pc, patch->dofSection, -1, patch->combined, point, &pdof, NULL));
1025: if (pdof) PetscCall(PetscSectionAddDof(pointCounts, v, 1));
1026: if (point >= cStart && point < cEnd) PetscCall(PetscSectionAddDof(cellCounts, v, 1));
1027: PetscHashIterNext(cht, hi);
1028: }
1029: }
1030: if (isFiredrake) PetscCall(DMLabelDestroyIndex(ghost));
1032: PetscCall(PetscSectionSetUp(cellCounts));
1033: PetscCall(PetscSectionGetStorageSize(cellCounts, &numCells));
1034: PetscCall(PetscMalloc1(numCells, &cellsArray));
1035: PetscCall(PetscSectionSetUp(pointCounts));
1036: PetscCall(PetscSectionGetStorageSize(pointCounts, &numPoints));
1037: PetscCall(PetscMalloc1(numPoints, &pointsArray));
1039: PetscCall(PetscSectionSetUp(intFacetCounts));
1040: PetscCall(PetscSectionSetUp(extFacetCounts));
1041: PetscCall(PetscSectionGetStorageSize(intFacetCounts, &numIntFacets));
1042: PetscCall(PetscSectionGetStorageSize(extFacetCounts, &numExtFacets));
1043: PetscCall(PetscMalloc1(numIntFacets, &intFacetsArray));
1044: PetscCall(PetscMalloc1(numIntFacets * 2, &intFacetsToPatchCell));
1045: PetscCall(PetscMalloc1(numExtFacets, &extFacetsArray));
1047: /* Now that we know how much space we need, run through again and actually remember the cells. */
1048: for (v = vStart; v < vEnd; v++) {
1049: PetscHashIter hi;
1050: PetscInt dof, off, cdof, coff, efdof, efoff, ifdof, ifoff, pdof, n = 0, cn = 0, ifn = 0, efn = 0;
1052: PetscCall(PetscSectionGetDof(pointCounts, v, &dof));
1053: PetscCall(PetscSectionGetOffset(pointCounts, v, &off));
1054: PetscCall(PetscSectionGetDof(cellCounts, v, &cdof));
1055: PetscCall(PetscSectionGetOffset(cellCounts, v, &coff));
1056: PetscCall(PetscSectionGetDof(intFacetCounts, v, &ifdof));
1057: PetscCall(PetscSectionGetOffset(intFacetCounts, v, &ifoff));
1058: PetscCall(PetscSectionGetDof(extFacetCounts, v, &efdof));
1059: PetscCall(PetscSectionGetOffset(extFacetCounts, v, &efoff));
1060: if (dof <= 0) continue;
1061: PetscCall(patch->patchconstructop((void *)patch, dm, v, ht));
1062: PetscCall(PCPatchCompleteCellPatch(pc, ht, cht));
1063: PetscHashIterBegin(cht, hi);
1064: while (!PetscHashIterAtEnd(cht, hi)) {
1065: PetscInt point;
1067: PetscHashIterGetKey(cht, hi, point);
1068: if (fStart <= point && point < fEnd) {
1069: const PetscInt *support;
1070: PetscInt supportSize, p;
1071: PetscBool interior = PETSC_TRUE;
1072: PetscCall(DMPlexGetSupport(dm, point, &support));
1073: PetscCall(DMPlexGetSupportSize(dm, point, &supportSize));
1074: if (supportSize == 1) {
1075: interior = PETSC_FALSE;
1076: } else {
1077: for (p = 0; p < supportSize; p++) {
1078: PetscBool found;
1079: /* FIXME: can I do this while iterating over cht? */
1080: PetscCall(PetscHSetIHas(cht, support[p], &found));
1081: if (!found) {
1082: interior = PETSC_FALSE;
1083: break;
1084: }
1085: }
1086: }
1087: if (interior) {
1088: intFacetsToPatchCell[2 * (ifoff + ifn)] = support[0];
1089: intFacetsToPatchCell[2 * (ifoff + ifn) + 1] = support[1];
1090: intFacetsArray[ifoff + ifn++] = point;
1091: } else {
1092: extFacetsArray[efoff + efn++] = point;
1093: }
1094: }
1095: PetscCall(PCPatchGetGlobalDofs(pc, patch->dofSection, -1, patch->combined, point, &pdof, NULL));
1096: if (pdof) pointsArray[off + n++] = point;
1097: if (point >= cStart && point < cEnd) cellsArray[coff + cn++] = point;
1098: PetscHashIterNext(cht, hi);
1099: }
1100: 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);
1101: 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);
1102: 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);
1103: 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);
1105: for (ifn = 0; ifn < ifdof; ifn++) {
1106: PetscInt cell0 = intFacetsToPatchCell[2 * (ifoff + ifn)];
1107: PetscInt cell1 = intFacetsToPatchCell[2 * (ifoff + ifn) + 1];
1108: PetscBool found0 = PETSC_FALSE, found1 = PETSC_FALSE;
1109: for (n = 0; n < cdof; n++) {
1110: if (!found0 && cell0 == cellsArray[coff + n]) {
1111: intFacetsToPatchCell[2 * (ifoff + ifn)] = n;
1112: found0 = PETSC_TRUE;
1113: }
1114: if (!found1 && cell1 == cellsArray[coff + n]) {
1115: intFacetsToPatchCell[2 * (ifoff + ifn) + 1] = n;
1116: found1 = PETSC_TRUE;
1117: }
1118: if (found0 && found1) break;
1119: }
1120: PetscCheck(found0 && found1, PETSC_COMM_SELF, PETSC_ERR_ARG_SIZ, "Didn't manage to find local point numbers for facet support");
1121: }
1122: }
1123: PetscCall(PetscHSetIDestroy(&ht));
1124: PetscCall(PetscHSetIDestroy(&cht));
1126: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numCells, cellsArray, PETSC_OWN_POINTER, &patch->cells));
1127: PetscCall(PetscObjectSetName((PetscObject)patch->cells, "Patch Cells"));
1128: if (patch->viewCells) {
1129: PetscCall(ObjectView((PetscObject)patch->cellCounts, patch->viewerCells, patch->formatCells));
1130: PetscCall(ObjectView((PetscObject)patch->cells, patch->viewerCells, patch->formatCells));
1131: }
1132: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numIntFacets, intFacetsArray, PETSC_OWN_POINTER, &patch->intFacets));
1133: PetscCall(PetscObjectSetName((PetscObject)patch->intFacets, "Patch Interior Facets"));
1134: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, 2 * numIntFacets, intFacetsToPatchCell, PETSC_OWN_POINTER, &patch->intFacetsToPatchCell));
1135: PetscCall(PetscObjectSetName((PetscObject)patch->intFacetsToPatchCell, "Patch Interior Facets local support"));
1136: if (patch->viewIntFacets) {
1137: PetscCall(ObjectView((PetscObject)patch->intFacetCounts, patch->viewerIntFacets, patch->formatIntFacets));
1138: PetscCall(ObjectView((PetscObject)patch->intFacets, patch->viewerIntFacets, patch->formatIntFacets));
1139: PetscCall(ObjectView((PetscObject)patch->intFacetsToPatchCell, patch->viewerIntFacets, patch->formatIntFacets));
1140: }
1141: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numExtFacets, extFacetsArray, PETSC_OWN_POINTER, &patch->extFacets));
1142: PetscCall(PetscObjectSetName((PetscObject)patch->extFacets, "Patch Exterior Facets"));
1143: if (patch->viewExtFacets) {
1144: PetscCall(ObjectView((PetscObject)patch->extFacetCounts, patch->viewerExtFacets, patch->formatExtFacets));
1145: PetscCall(ObjectView((PetscObject)patch->extFacets, patch->viewerExtFacets, patch->formatExtFacets));
1146: }
1147: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numPoints, pointsArray, PETSC_OWN_POINTER, &patch->points));
1148: PetscCall(PetscObjectSetName((PetscObject)patch->points, "Patch Points"));
1149: if (patch->viewPoints) {
1150: PetscCall(ObjectView((PetscObject)patch->pointCounts, patch->viewerPoints, patch->formatPoints));
1151: PetscCall(ObjectView((PetscObject)patch->points, patch->viewerPoints, patch->formatPoints));
1152: }
1153: PetscCall(DMDestroy(&dm));
1154: PetscFunctionReturn(PETSC_SUCCESS);
1155: }
1157: /*
1158: PCPatchCreateCellPatchDiscretisationInfo - Build the dof maps for cell patches
1160: Input Parameters:
1161: + dm - The DMPlex object defining the mesh
1162: . cellCounts - Section with counts of cells around each vertex
1163: . cells - IS of the cell point indices of cells in each patch
1164: . cellNumbering - Section mapping plex cell points to Firedrake cell indices.
1165: . nodesPerCell - number of nodes per cell.
1166: - cellNodeMap - map from cells to node indices (nodesPerCell * numCells)
1168: Output Parameters:
1169: + dofs - IS of local dof numbers of each cell in the patch, where local is a patch local numbering
1170: . gtolCounts - Section with counts of dofs per cell patch
1171: - gtol - IS mapping from global dofs to local dofs for each patch.
1172: */
1173: static PetscErrorCode PCPatchCreateCellPatchDiscretisationInfo(PC pc)
1174: {
1175: PC_PATCH *patch = (PC_PATCH *)pc->data;
1176: PetscSection cellCounts = patch->cellCounts;
1177: PetscSection pointCounts = patch->pointCounts;
1178: PetscSection gtolCounts, gtolCountsWithArtificial = NULL, gtolCountsWithAll = NULL;
1179: IS cells = patch->cells;
1180: IS points = patch->points;
1181: PetscSection cellNumbering = patch->cellNumbering;
1182: PetscInt Nf = patch->nsubspaces;
1183: PetscInt numCells, numPoints;
1184: PetscInt numDofs;
1185: PetscInt numGlobalDofs, numGlobalDofsWithArtificial, numGlobalDofsWithAll;
1186: PetscInt totalDofsPerCell = patch->totalDofsPerCell;
1187: PetscInt vStart, vEnd, v;
1188: const PetscInt *cellsArray, *pointsArray;
1189: PetscInt *newCellsArray = NULL;
1190: PetscInt *dofsArray = NULL;
1191: PetscInt *dofsArrayWithArtificial = NULL;
1192: PetscInt *dofsArrayWithAll = NULL;
1193: PetscInt *offsArray = NULL;
1194: PetscInt *offsArrayWithArtificial = NULL;
1195: PetscInt *offsArrayWithAll = NULL;
1196: PetscInt *asmArray = NULL;
1197: PetscInt *asmArrayWithArtificial = NULL;
1198: PetscInt *asmArrayWithAll = NULL;
1199: PetscInt *globalDofsArray = NULL;
1200: PetscInt *globalDofsArrayWithArtificial = NULL;
1201: PetscInt *globalDofsArrayWithAll = NULL;
1202: PetscInt globalIndex = 0;
1203: PetscInt key = 0;
1204: PetscInt asmKey = 0;
1205: DM dm = NULL, plex;
1206: const PetscInt *bcNodes = NULL;
1207: PetscHMapI ht;
1208: PetscHMapI htWithArtificial;
1209: PetscHMapI htWithAll;
1210: PetscHSetI globalBcs;
1211: PetscInt numBcs;
1212: PetscHSetI ownedpts, seenpts, owneddofs, seendofs, artificialbcs;
1213: PetscInt pStart, pEnd, p, i;
1214: char option[PETSC_MAX_PATH_LEN];
1215: PetscBool isNonlinear;
1217: PetscFunctionBegin;
1218: PetscCall(PCGetDM(pc, &dm));
1219: PetscCall(DMConvert(dm, DMPLEX, &plex));
1220: dm = plex;
1221: /* dofcounts section is cellcounts section * dofPerCell */
1222: PetscCall(PetscSectionGetStorageSize(cellCounts, &numCells));
1223: PetscCall(PetscSectionGetStorageSize(patch->pointCounts, &numPoints));
1224: numDofs = numCells * totalDofsPerCell;
1225: PetscCall(PetscMalloc1(numDofs, &dofsArray));
1226: PetscCall(PetscMalloc1(numPoints * Nf, &offsArray));
1227: PetscCall(PetscMalloc1(numDofs, &asmArray));
1228: PetscCall(PetscMalloc1(numCells, &newCellsArray));
1229: PetscCall(PetscSectionGetChart(cellCounts, &vStart, &vEnd));
1230: PetscCall(PetscSectionCreate(PETSC_COMM_SELF, &patch->gtolCounts));
1231: gtolCounts = patch->gtolCounts;
1232: PetscCall(PetscSectionSetChart(gtolCounts, vStart, vEnd));
1233: PetscCall(PetscObjectSetName((PetscObject)patch->gtolCounts, "Patch Global Index Section"));
1235: if (patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) {
1236: PetscCall(PetscMalloc1(numPoints * Nf, &offsArrayWithArtificial));
1237: PetscCall(PetscMalloc1(numDofs, &asmArrayWithArtificial));
1238: PetscCall(PetscMalloc1(numDofs, &dofsArrayWithArtificial));
1239: PetscCall(PetscSectionCreate(PETSC_COMM_SELF, &patch->gtolCountsWithArtificial));
1240: gtolCountsWithArtificial = patch->gtolCountsWithArtificial;
1241: PetscCall(PetscSectionSetChart(gtolCountsWithArtificial, vStart, vEnd));
1242: PetscCall(PetscObjectSetName((PetscObject)patch->gtolCountsWithArtificial, "Patch Global Index Section Including Artificial BCs"));
1243: }
1245: isNonlinear = patch->isNonlinear;
1246: if (isNonlinear) {
1247: PetscCall(PetscMalloc1(numPoints * Nf, &offsArrayWithAll));
1248: PetscCall(PetscMalloc1(numDofs, &asmArrayWithAll));
1249: PetscCall(PetscMalloc1(numDofs, &dofsArrayWithAll));
1250: PetscCall(PetscSectionCreate(PETSC_COMM_SELF, &patch->gtolCountsWithAll));
1251: gtolCountsWithAll = patch->gtolCountsWithAll;
1252: PetscCall(PetscSectionSetChart(gtolCountsWithAll, vStart, vEnd));
1253: PetscCall(PetscObjectSetName((PetscObject)patch->gtolCountsWithAll, "Patch Global Index Section Including All BCs"));
1254: }
1256: /* Outside the patch loop, get the dofs that are globally-enforced Dirichlet
1257: conditions */
1258: PetscCall(PetscHSetICreate(&globalBcs));
1259: PetscCall(ISGetIndices(patch->ghostBcNodes, &bcNodes));
1260: PetscCall(ISGetSize(patch->ghostBcNodes, &numBcs));
1261: for (i = 0; i < numBcs; ++i) { PetscCall(PetscHSetIAdd(globalBcs, bcNodes[i])); /* these are already in concatenated numbering */ }
1262: PetscCall(ISRestoreIndices(patch->ghostBcNodes, &bcNodes));
1263: PetscCall(ISDestroy(&patch->ghostBcNodes)); /* memory optimisation */
1265: /* Hash tables for artificial BC construction */
1266: PetscCall(PetscHSetICreate(&ownedpts));
1267: PetscCall(PetscHSetICreate(&seenpts));
1268: PetscCall(PetscHSetICreate(&owneddofs));
1269: PetscCall(PetscHSetICreate(&seendofs));
1270: PetscCall(PetscHSetICreate(&artificialbcs));
1272: PetscCall(ISGetIndices(cells, &cellsArray));
1273: PetscCall(ISGetIndices(points, &pointsArray));
1274: PetscCall(PetscHMapICreate(&ht));
1275: PetscCall(PetscHMapICreate(&htWithArtificial));
1276: PetscCall(PetscHMapICreate(&htWithAll));
1277: for (v = vStart; v < vEnd; ++v) {
1278: PetscInt localIndex = 0;
1279: PetscInt localIndexWithArtificial = 0;
1280: PetscInt localIndexWithAll = 0;
1281: PetscInt dof, off, i, j, k, l;
1283: PetscCall(PetscHMapIClear(ht));
1284: PetscCall(PetscHMapIClear(htWithArtificial));
1285: PetscCall(PetscHMapIClear(htWithAll));
1286: PetscCall(PetscSectionGetDof(cellCounts, v, &dof));
1287: PetscCall(PetscSectionGetOffset(cellCounts, v, &off));
1288: if (dof <= 0) continue;
1290: /* Calculate the global numbers of the artificial BC dofs here first */
1291: PetscCall(patch->patchconstructop((void *)patch, dm, v, ownedpts));
1292: PetscCall(PCPatchCompleteCellPatch(pc, ownedpts, seenpts));
1293: PetscCall(PCPatchGetPointDofs(pc, ownedpts, owneddofs, v, &patch->subspaces_to_exclude));
1294: PetscCall(PCPatchGetPointDofs(pc, seenpts, seendofs, v, NULL));
1295: PetscCall(PCPatchComputeSetDifference_Private(owneddofs, seendofs, artificialbcs));
1296: if (patch->viewPatches) {
1297: PetscHSetI globalbcdofs;
1298: PetscHashIter hi;
1299: MPI_Comm comm = PetscObjectComm((PetscObject)pc);
1301: PetscCall(PetscHSetICreate(&globalbcdofs));
1302: PetscCall(PetscSynchronizedPrintf(comm, "Patch %" PetscInt_FMT ": owned dofs:\n", v));
1303: PetscHashIterBegin(owneddofs, hi);
1304: while (!PetscHashIterAtEnd(owneddofs, hi)) {
1305: PetscInt globalDof;
1307: PetscHashIterGetKey(owneddofs, hi, globalDof);
1308: PetscHashIterNext(owneddofs, hi);
1309: PetscCall(PetscSynchronizedPrintf(comm, "%" PetscInt_FMT " ", globalDof));
1310: }
1311: PetscCall(PetscSynchronizedPrintf(comm, "\n"));
1312: PetscCall(PetscSynchronizedPrintf(comm, "Patch %" PetscInt_FMT ": seen dofs:\n", v));
1313: PetscHashIterBegin(seendofs, hi);
1314: while (!PetscHashIterAtEnd(seendofs, hi)) {
1315: PetscInt globalDof;
1316: PetscBool flg;
1318: PetscHashIterGetKey(seendofs, hi, globalDof);
1319: PetscHashIterNext(seendofs, hi);
1320: PetscCall(PetscSynchronizedPrintf(comm, "%" PetscInt_FMT " ", globalDof));
1322: PetscCall(PetscHSetIHas(globalBcs, globalDof, &flg));
1323: if (flg) PetscCall(PetscHSetIAdd(globalbcdofs, globalDof));
1324: }
1325: PetscCall(PetscSynchronizedPrintf(comm, "\n"));
1326: PetscCall(PetscSynchronizedPrintf(comm, "Patch %" PetscInt_FMT ": global BCs:\n", v));
1327: PetscCall(PetscHSetIGetSize(globalbcdofs, &numBcs));
1328: if (numBcs > 0) {
1329: PetscHashIterBegin(globalbcdofs, hi);
1330: while (!PetscHashIterAtEnd(globalbcdofs, hi)) {
1331: PetscInt globalDof;
1332: PetscHashIterGetKey(globalbcdofs, hi, globalDof);
1333: PetscHashIterNext(globalbcdofs, hi);
1334: PetscCall(PetscSynchronizedPrintf(comm, "%" PetscInt_FMT " ", globalDof));
1335: }
1336: }
1337: PetscCall(PetscSynchronizedPrintf(comm, "\n"));
1338: PetscCall(PetscSynchronizedPrintf(comm, "Patch %" PetscInt_FMT ": artificial BCs:\n", v));
1339: PetscCall(PetscHSetIGetSize(artificialbcs, &numBcs));
1340: if (numBcs > 0) {
1341: PetscHashIterBegin(artificialbcs, hi);
1342: while (!PetscHashIterAtEnd(artificialbcs, hi)) {
1343: PetscInt globalDof;
1344: PetscHashIterGetKey(artificialbcs, hi, globalDof);
1345: PetscHashIterNext(artificialbcs, hi);
1346: PetscCall(PetscSynchronizedPrintf(comm, "%" PetscInt_FMT " ", globalDof));
1347: }
1348: }
1349: PetscCall(PetscSynchronizedPrintf(comm, "\n\n"));
1350: PetscCall(PetscHSetIDestroy(&globalbcdofs));
1351: }
1352: for (k = 0; k < patch->nsubspaces; ++k) {
1353: const PetscInt *cellNodeMap = patch->cellNodeMap[k];
1354: PetscInt nodesPerCell = patch->nodesPerCell[k];
1355: PetscInt subspaceOffset = patch->subspaceOffsets[k];
1356: PetscInt bs = patch->bs[k];
1358: for (i = off; i < off + dof; ++i) {
1359: /* Walk over the cells in this patch. */
1360: const PetscInt c = cellsArray[i];
1361: PetscInt cell = c;
1363: /* TODO Change this to an IS */
1364: if (cellNumbering) {
1365: PetscCall(PetscSectionGetDof(cellNumbering, c, &cell));
1366: PetscCheck(cell > 0, PetscObjectComm((PetscObject)pc), PETSC_ERR_ARG_OUTOFRANGE, "Cell %" PetscInt_FMT " doesn't appear in cell numbering map", c);
1367: PetscCall(PetscSectionGetOffset(cellNumbering, c, &cell));
1368: }
1369: newCellsArray[i] = cell;
1370: for (j = 0; j < nodesPerCell; ++j) {
1371: /* For each global dof, map it into contiguous local storage. */
1372: const PetscInt globalDof = cellNodeMap[cell * nodesPerCell + j] * bs + subspaceOffset;
1373: /* finally, loop over block size */
1374: for (l = 0; l < bs; ++l) {
1375: PetscInt localDof;
1376: PetscBool isGlobalBcDof, isArtificialBcDof;
1378: /* first, check if this is either a globally enforced or locally enforced BC dof */
1379: PetscCall(PetscHSetIHas(globalBcs, globalDof + l, &isGlobalBcDof));
1380: PetscCall(PetscHSetIHas(artificialbcs, globalDof + l, &isArtificialBcDof));
1382: /* if it's either, don't ever give it a local dof number */
1383: if (isGlobalBcDof || isArtificialBcDof) {
1384: dofsArray[globalIndex] = -1; /* don't use this in assembly in this patch */
1385: } else {
1386: PetscCall(PetscHMapIGet(ht, globalDof + l, &localDof));
1387: if (localDof == -1) {
1388: localDof = localIndex++;
1389: PetscCall(PetscHMapISet(ht, globalDof + l, localDof));
1390: }
1391: PetscCheck(globalIndex < numDofs, PETSC_COMM_WORLD, PETSC_ERR_ARG_OUTOFRANGE, "Found more dofs %" PetscInt_FMT " than expected %" PetscInt_FMT, globalIndex + 1, numDofs);
1392: /* And store. */
1393: dofsArray[globalIndex] = localDof;
1394: }
1396: if (patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) {
1397: if (isGlobalBcDof) {
1398: dofsArrayWithArtificial[globalIndex] = -1; /* don't use this in assembly in this patch */
1399: } else {
1400: PetscCall(PetscHMapIGet(htWithArtificial, globalDof + l, &localDof));
1401: if (localDof == -1) {
1402: localDof = localIndexWithArtificial++;
1403: PetscCall(PetscHMapISet(htWithArtificial, 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: dofsArrayWithArtificial[globalIndex] = localDof;
1408: }
1409: }
1411: if (isNonlinear) {
1412: /* Build the dofmap for the function space with _all_ dofs,
1413: including those in any kind of boundary condition */
1414: PetscCall(PetscHMapIGet(htWithAll, globalDof + l, &localDof));
1415: if (localDof == -1) {
1416: localDof = localIndexWithAll++;
1417: PetscCall(PetscHMapISet(htWithAll, 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: dofsArrayWithAll[globalIndex] = localDof;
1422: }
1423: globalIndex++;
1424: }
1425: }
1426: }
1427: }
1428: /* How many local dofs in this patch? */
1429: if (patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) {
1430: PetscCall(PetscHMapIGetSize(htWithArtificial, &dof));
1431: PetscCall(PetscSectionSetDof(gtolCountsWithArtificial, v, dof));
1432: }
1433: if (isNonlinear) {
1434: PetscCall(PetscHMapIGetSize(htWithAll, &dof));
1435: PetscCall(PetscSectionSetDof(gtolCountsWithAll, v, dof));
1436: }
1437: PetscCall(PetscHMapIGetSize(ht, &dof));
1438: PetscCall(PetscSectionSetDof(gtolCounts, v, dof));
1439: }
1441: PetscCall(DMDestroy(&dm));
1442: 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);
1443: PetscCall(PetscSectionSetUp(gtolCounts));
1444: PetscCall(PetscSectionGetStorageSize(gtolCounts, &numGlobalDofs));
1445: PetscCall(PetscMalloc1(numGlobalDofs, &globalDofsArray));
1447: if (patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) {
1448: PetscCall(PetscSectionSetUp(gtolCountsWithArtificial));
1449: PetscCall(PetscSectionGetStorageSize(gtolCountsWithArtificial, &numGlobalDofsWithArtificial));
1450: PetscCall(PetscMalloc1(numGlobalDofsWithArtificial, &globalDofsArrayWithArtificial));
1451: }
1452: if (isNonlinear) {
1453: PetscCall(PetscSectionSetUp(gtolCountsWithAll));
1454: PetscCall(PetscSectionGetStorageSize(gtolCountsWithAll, &numGlobalDofsWithAll));
1455: PetscCall(PetscMalloc1(numGlobalDofsWithAll, &globalDofsArrayWithAll));
1456: }
1457: /* Now populate the global to local map. This could be merged into the above loop if we were willing to deal with reallocs. */
1458: for (v = vStart; v < vEnd; ++v) {
1459: PetscHashIter hi;
1460: PetscInt dof, off, Np, ooff, i, j, k, l;
1462: PetscCall(PetscHMapIClear(ht));
1463: PetscCall(PetscHMapIClear(htWithArtificial));
1464: PetscCall(PetscHMapIClear(htWithAll));
1465: PetscCall(PetscSectionGetDof(cellCounts, v, &dof));
1466: PetscCall(PetscSectionGetOffset(cellCounts, v, &off));
1467: PetscCall(PetscSectionGetDof(pointCounts, v, &Np));
1468: PetscCall(PetscSectionGetOffset(pointCounts, v, &ooff));
1469: if (dof <= 0) continue;
1471: for (k = 0; k < patch->nsubspaces; ++k) {
1472: const PetscInt *cellNodeMap = patch->cellNodeMap[k];
1473: PetscInt nodesPerCell = patch->nodesPerCell[k];
1474: PetscInt subspaceOffset = patch->subspaceOffsets[k];
1475: PetscInt bs = patch->bs[k];
1476: PetscInt goff;
1478: for (i = off; i < off + dof; ++i) {
1479: /* Reconstruct mapping of global-to-local on this patch. */
1480: const PetscInt c = cellsArray[i];
1481: PetscInt cell = c;
1483: if (cellNumbering) PetscCall(PetscSectionGetOffset(cellNumbering, c, &cell));
1484: for (j = 0; j < nodesPerCell; ++j) {
1485: for (l = 0; l < bs; ++l) {
1486: const PetscInt globalDof = cellNodeMap[cell * nodesPerCell + j] * bs + l + subspaceOffset;
1487: const PetscInt localDof = dofsArray[key];
1488: if (localDof >= 0) PetscCall(PetscHMapISet(ht, globalDof, localDof));
1489: if (patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) {
1490: const PetscInt localDofWithArtificial = dofsArrayWithArtificial[key];
1491: if (localDofWithArtificial >= 0) PetscCall(PetscHMapISet(htWithArtificial, globalDof, localDofWithArtificial));
1492: }
1493: if (isNonlinear) {
1494: const PetscInt localDofWithAll = dofsArrayWithAll[key];
1495: if (localDofWithAll >= 0) PetscCall(PetscHMapISet(htWithAll, globalDof, localDofWithAll));
1496: }
1497: key++;
1498: }
1499: }
1500: }
1502: /* Shove it in the output data structure. */
1503: PetscCall(PetscSectionGetOffset(gtolCounts, v, &goff));
1504: PetscHashIterBegin(ht, hi);
1505: while (!PetscHashIterAtEnd(ht, hi)) {
1506: PetscInt globalDof, localDof;
1508: PetscHashIterGetKey(ht, hi, globalDof);
1509: PetscHashIterGetVal(ht, hi, localDof);
1510: if (globalDof >= 0) globalDofsArray[goff + localDof] = globalDof;
1511: PetscHashIterNext(ht, hi);
1512: }
1514: if (patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) {
1515: PetscCall(PetscSectionGetOffset(gtolCountsWithArtificial, v, &goff));
1516: PetscHashIterBegin(htWithArtificial, hi);
1517: while (!PetscHashIterAtEnd(htWithArtificial, hi)) {
1518: PetscInt globalDof, localDof;
1519: PetscHashIterGetKey(htWithArtificial, hi, globalDof);
1520: PetscHashIterGetVal(htWithArtificial, hi, localDof);
1521: if (globalDof >= 0) globalDofsArrayWithArtificial[goff + localDof] = globalDof;
1522: PetscHashIterNext(htWithArtificial, hi);
1523: }
1524: }
1525: if (isNonlinear) {
1526: PetscCall(PetscSectionGetOffset(gtolCountsWithAll, v, &goff));
1527: PetscHashIterBegin(htWithAll, hi);
1528: while (!PetscHashIterAtEnd(htWithAll, hi)) {
1529: PetscInt globalDof, localDof;
1530: PetscHashIterGetKey(htWithAll, hi, globalDof);
1531: PetscHashIterGetVal(htWithAll, hi, localDof);
1532: if (globalDof >= 0) globalDofsArrayWithAll[goff + localDof] = globalDof;
1533: PetscHashIterNext(htWithAll, hi);
1534: }
1535: }
1537: for (p = 0; p < Np; ++p) {
1538: const PetscInt point = pointsArray[ooff + p];
1539: PetscInt globalDof, localDof;
1541: PetscCall(PCPatchGetGlobalDofs(pc, patch->dofSection, k, patch->combined, point, NULL, &globalDof));
1542: PetscCall(PetscHMapIGet(ht, globalDof, &localDof));
1543: offsArray[(ooff + p) * Nf + k] = localDof;
1544: if (patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) {
1545: PetscCall(PetscHMapIGet(htWithArtificial, globalDof, &localDof));
1546: offsArrayWithArtificial[(ooff + p) * Nf + k] = localDof;
1547: }
1548: if (isNonlinear) {
1549: PetscCall(PetscHMapIGet(htWithAll, globalDof, &localDof));
1550: offsArrayWithAll[(ooff + p) * Nf + k] = localDof;
1551: }
1552: }
1553: }
1555: PetscCall(PetscHSetIDestroy(&globalBcs));
1556: PetscCall(PetscHSetIDestroy(&ownedpts));
1557: PetscCall(PetscHSetIDestroy(&seenpts));
1558: PetscCall(PetscHSetIDestroy(&owneddofs));
1559: PetscCall(PetscHSetIDestroy(&seendofs));
1560: PetscCall(PetscHSetIDestroy(&artificialbcs));
1562: /* At this point, we have a hash table ht built that maps globalDof -> localDof.
1563: We need to create the dof table laid out cellwise first, then by subspace,
1564: as the assembler assembles cell-wise and we need to stuff the different
1565: contributions of the different function spaces to the right places. So we loop
1566: over cells, then over subspaces. */
1567: if (patch->nsubspaces > 1) { /* for nsubspaces = 1, data we need is already in dofsArray */
1568: for (i = off; i < off + dof; ++i) {
1569: const PetscInt c = cellsArray[i];
1570: PetscInt cell = c;
1572: if (cellNumbering) PetscCall(PetscSectionGetOffset(cellNumbering, c, &cell));
1573: for (k = 0; k < patch->nsubspaces; ++k) {
1574: const PetscInt *cellNodeMap = patch->cellNodeMap[k];
1575: PetscInt nodesPerCell = patch->nodesPerCell[k];
1576: PetscInt subspaceOffset = patch->subspaceOffsets[k];
1577: PetscInt bs = patch->bs[k];
1579: for (j = 0; j < nodesPerCell; ++j) {
1580: for (l = 0; l < bs; ++l) {
1581: const PetscInt globalDof = cellNodeMap[cell * nodesPerCell + j] * bs + l + subspaceOffset;
1582: PetscInt localDof;
1584: PetscCall(PetscHMapIGet(ht, globalDof, &localDof));
1585: /* If it's not in the hash table, i.e. is a BC dof,
1586: then the PetscHSetIMap above gives -1, which matches
1587: exactly the convention for PETSc's matrix assembly to
1588: ignore the dof. So we don't need to do anything here */
1589: asmArray[asmKey] = localDof;
1590: if (patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) {
1591: PetscCall(PetscHMapIGet(htWithArtificial, globalDof, &localDof));
1592: asmArrayWithArtificial[asmKey] = localDof;
1593: }
1594: if (isNonlinear) {
1595: PetscCall(PetscHMapIGet(htWithAll, globalDof, &localDof));
1596: asmArrayWithAll[asmKey] = localDof;
1597: }
1598: asmKey++;
1599: }
1600: }
1601: }
1602: }
1603: }
1604: }
1605: if (1 == patch->nsubspaces) {
1606: PetscCall(PetscArraycpy(asmArray, dofsArray, numDofs));
1607: if (patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) PetscCall(PetscArraycpy(asmArrayWithArtificial, dofsArrayWithArtificial, numDofs));
1608: if (isNonlinear) PetscCall(PetscArraycpy(asmArrayWithAll, dofsArrayWithAll, numDofs));
1609: }
1611: PetscCall(PetscHMapIDestroy(&ht));
1612: PetscCall(PetscHMapIDestroy(&htWithArtificial));
1613: PetscCall(PetscHMapIDestroy(&htWithAll));
1614: PetscCall(ISRestoreIndices(cells, &cellsArray));
1615: PetscCall(ISRestoreIndices(points, &pointsArray));
1616: PetscCall(PetscFree(dofsArray));
1617: if (patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) PetscCall(PetscFree(dofsArrayWithArtificial));
1618: if (isNonlinear) PetscCall(PetscFree(dofsArrayWithAll));
1619: /* Create placeholder section for map from points to patch dofs */
1620: PetscCall(PetscSectionCreate(PETSC_COMM_SELF, &patch->patchSection));
1621: PetscCall(PetscSectionSetNumFields(patch->patchSection, patch->nsubspaces));
1622: if (patch->combined) {
1623: PetscInt numFields;
1624: PetscCall(PetscSectionGetNumFields(patch->dofSection[0], &numFields));
1625: 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);
1626: PetscCall(PetscSectionGetChart(patch->dofSection[0], &pStart, &pEnd));
1627: PetscCall(PetscSectionSetChart(patch->patchSection, pStart, pEnd));
1628: for (p = pStart; p < pEnd; ++p) {
1629: PetscInt dof, fdof, f;
1631: PetscCall(PetscSectionGetDof(patch->dofSection[0], p, &dof));
1632: PetscCall(PetscSectionSetDof(patch->patchSection, p, dof));
1633: for (f = 0; f < patch->nsubspaces; ++f) {
1634: PetscCall(PetscSectionGetFieldDof(patch->dofSection[0], p, f, &fdof));
1635: PetscCall(PetscSectionSetFieldDof(patch->patchSection, p, f, fdof));
1636: }
1637: }
1638: } else {
1639: PetscInt pStartf, pEndf, f;
1640: pStart = PETSC_MAX_INT;
1641: pEnd = PETSC_MIN_INT;
1642: for (f = 0; f < patch->nsubspaces; ++f) {
1643: PetscCall(PetscSectionGetChart(patch->dofSection[f], &pStartf, &pEndf));
1644: pStart = PetscMin(pStart, pStartf);
1645: pEnd = PetscMax(pEnd, pEndf);
1646: }
1647: PetscCall(PetscSectionSetChart(patch->patchSection, pStart, pEnd));
1648: for (f = 0; f < patch->nsubspaces; ++f) {
1649: PetscCall(PetscSectionGetChart(patch->dofSection[f], &pStartf, &pEndf));
1650: for (p = pStartf; p < pEndf; ++p) {
1651: PetscInt fdof;
1652: PetscCall(PetscSectionGetDof(patch->dofSection[f], p, &fdof));
1653: PetscCall(PetscSectionAddDof(patch->patchSection, p, fdof));
1654: PetscCall(PetscSectionSetFieldDof(patch->patchSection, p, f, fdof));
1655: }
1656: }
1657: }
1658: PetscCall(PetscSectionSetUp(patch->patchSection));
1659: PetscCall(PetscSectionSetUseFieldOffsets(patch->patchSection, PETSC_TRUE));
1660: /* Replace cell indices with firedrake-numbered ones. */
1661: PetscCall(ISGeneralSetIndices(cells, numCells, (const PetscInt *)newCellsArray, PETSC_OWN_POINTER));
1662: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numGlobalDofs, globalDofsArray, PETSC_OWN_POINTER, &patch->gtol));
1663: PetscCall(PetscObjectSetName((PetscObject)patch->gtol, "Global Indices"));
1664: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_g2l_view", patch->classname));
1665: PetscCall(PetscSectionViewFromOptions(patch->gtolCounts, (PetscObject)pc, option));
1666: PetscCall(ISViewFromOptions(patch->gtol, (PetscObject)pc, option));
1667: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numDofs, asmArray, PETSC_OWN_POINTER, &patch->dofs));
1668: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numPoints * Nf, offsArray, PETSC_OWN_POINTER, &patch->offs));
1669: if (patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) {
1670: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numGlobalDofsWithArtificial, globalDofsArrayWithArtificial, PETSC_OWN_POINTER, &patch->gtolWithArtificial));
1671: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numDofs, asmArrayWithArtificial, PETSC_OWN_POINTER, &patch->dofsWithArtificial));
1672: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numPoints * Nf, offsArrayWithArtificial, PETSC_OWN_POINTER, &patch->offsWithArtificial));
1673: }
1674: if (isNonlinear) {
1675: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numGlobalDofsWithAll, globalDofsArrayWithAll, PETSC_OWN_POINTER, &patch->gtolWithAll));
1676: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numDofs, asmArrayWithAll, PETSC_OWN_POINTER, &patch->dofsWithAll));
1677: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numPoints * Nf, offsArrayWithAll, PETSC_OWN_POINTER, &patch->offsWithAll));
1678: }
1679: PetscFunctionReturn(PETSC_SUCCESS);
1680: }
1682: static PetscErrorCode PCPatchCreateMatrix_Private(PC pc, PetscInt point, Mat *mat, PetscBool withArtificial)
1683: {
1684: PC_PATCH *patch = (PC_PATCH *)pc->data;
1685: PetscBool flg;
1686: PetscInt csize, rsize;
1687: const char *prefix = NULL;
1689: PetscFunctionBegin;
1690: if (withArtificial) {
1691: /* would be nice if we could create a rectangular matrix of size numDofsWithArtificial x numDofs here */
1692: PetscInt pStart;
1693: PetscCall(PetscSectionGetChart(patch->gtolCountsWithArtificial, &pStart, NULL));
1694: PetscCall(PetscSectionGetDof(patch->gtolCountsWithArtificial, point + pStart, &rsize));
1695: csize = rsize;
1696: } else {
1697: PetscInt pStart;
1698: PetscCall(PetscSectionGetChart(patch->gtolCounts, &pStart, NULL));
1699: PetscCall(PetscSectionGetDof(patch->gtolCounts, point + pStart, &rsize));
1700: csize = rsize;
1701: }
1703: PetscCall(MatCreate(PETSC_COMM_SELF, mat));
1704: PetscCall(PCGetOptionsPrefix(pc, &prefix));
1705: PetscCall(MatSetOptionsPrefix(*mat, prefix));
1706: PetscCall(MatAppendOptionsPrefix(*mat, "pc_patch_sub_"));
1707: if (patch->sub_mat_type) PetscCall(MatSetType(*mat, patch->sub_mat_type));
1708: else if (!patch->sub_mat_type) PetscCall(MatSetType(*mat, MATDENSE));
1709: PetscCall(MatSetSizes(*mat, rsize, csize, rsize, csize));
1710: PetscCall(PetscObjectTypeCompare((PetscObject)*mat, MATDENSE, &flg));
1711: if (!flg) PetscCall(PetscObjectTypeCompare((PetscObject)*mat, MATSEQDENSE, &flg));
1712: /* Sparse patch matrices */
1713: if (!flg) {
1714: PetscBT bt;
1715: PetscInt *dnnz = NULL;
1716: const PetscInt *dofsArray = NULL;
1717: PetscInt pStart, pEnd, ncell, offset, c, i, j;
1719: if (withArtificial) {
1720: PetscCall(ISGetIndices(patch->dofsWithArtificial, &dofsArray));
1721: } else {
1722: PetscCall(ISGetIndices(patch->dofs, &dofsArray));
1723: }
1724: PetscCall(PetscSectionGetChart(patch->cellCounts, &pStart, &pEnd));
1725: point += pStart;
1726: PetscCheck(point < pEnd, PETSC_COMM_SELF, PETSC_ERR_ARG_OUTOFRANGE, "Operator point %" PetscInt_FMT " not in [%" PetscInt_FMT ", %" PetscInt_FMT ")", point, pStart, pEnd);
1727: PetscCall(PetscSectionGetDof(patch->cellCounts, point, &ncell));
1728: PetscCall(PetscSectionGetOffset(patch->cellCounts, point, &offset));
1729: PetscCall(PetscLogEventBegin(PC_Patch_Prealloc, pc, 0, 0, 0));
1730: /* A PetscBT uses N^2 bits to store the sparsity pattern on a
1731: * patch. This is probably OK if the patches are not too big,
1732: * but uses too much memory. We therefore switch based on rsize. */
1733: if (rsize < 3000) { /* FIXME: I picked this switch value out of my hat */
1734: PetscScalar *zeroes;
1735: PetscInt rows;
1737: PetscCall(PetscCalloc1(rsize, &dnnz));
1738: PetscCall(PetscBTCreate(rsize * rsize, &bt));
1739: for (c = 0; c < ncell; ++c) {
1740: const PetscInt *idx = dofsArray + (offset + c) * patch->totalDofsPerCell;
1741: for (i = 0; i < patch->totalDofsPerCell; ++i) {
1742: const PetscInt row = idx[i];
1743: if (row < 0) continue;
1744: for (j = 0; j < patch->totalDofsPerCell; ++j) {
1745: const PetscInt col = idx[j];
1746: const PetscInt key = row * rsize + col;
1747: if (col < 0) continue;
1748: if (!PetscBTLookupSet(bt, key)) ++dnnz[row];
1749: }
1750: }
1751: }
1753: if (patch->usercomputeopintfacet) {
1754: const PetscInt *intFacetsArray = NULL;
1755: PetscInt i, numIntFacets, intFacetOffset;
1756: const PetscInt *facetCells = NULL;
1758: PetscCall(PetscSectionGetDof(patch->intFacetCounts, point, &numIntFacets));
1759: PetscCall(PetscSectionGetOffset(patch->intFacetCounts, point, &intFacetOffset));
1760: PetscCall(ISGetIndices(patch->intFacetsToPatchCell, &facetCells));
1761: PetscCall(ISGetIndices(patch->intFacets, &intFacetsArray));
1762: for (i = 0; i < numIntFacets; i++) {
1763: const PetscInt cell0 = facetCells[2 * (intFacetOffset + i) + 0];
1764: const PetscInt cell1 = facetCells[2 * (intFacetOffset + i) + 1];
1765: PetscInt celli, cellj;
1767: for (celli = 0; celli < patch->totalDofsPerCell; celli++) {
1768: const PetscInt row = dofsArray[(offset + cell0) * patch->totalDofsPerCell + celli];
1769: if (row < 0) continue;
1770: for (cellj = 0; cellj < patch->totalDofsPerCell; cellj++) {
1771: const PetscInt col = dofsArray[(offset + cell1) * patch->totalDofsPerCell + cellj];
1772: const PetscInt key = row * rsize + col;
1773: if (col < 0) continue;
1774: if (!PetscBTLookupSet(bt, key)) ++dnnz[row];
1775: }
1776: }
1778: for (celli = 0; celli < patch->totalDofsPerCell; celli++) {
1779: const PetscInt row = dofsArray[(offset + cell1) * patch->totalDofsPerCell + celli];
1780: if (row < 0) continue;
1781: for (cellj = 0; cellj < patch->totalDofsPerCell; cellj++) {
1782: const PetscInt col = dofsArray[(offset + cell0) * patch->totalDofsPerCell + cellj];
1783: const PetscInt key = row * rsize + col;
1784: if (col < 0) continue;
1785: if (!PetscBTLookupSet(bt, key)) ++dnnz[row];
1786: }
1787: }
1788: }
1789: }
1790: PetscCall(PetscBTDestroy(&bt));
1791: PetscCall(MatXAIJSetPreallocation(*mat, 1, dnnz, NULL, NULL, NULL));
1792: PetscCall(PetscFree(dnnz));
1794: PetscCall(PetscCalloc1(patch->totalDofsPerCell * patch->totalDofsPerCell, &zeroes));
1795: for (c = 0; c < ncell; ++c) {
1796: const PetscInt *idx = &dofsArray[(offset + c) * patch->totalDofsPerCell];
1797: PetscCall(MatSetValues(*mat, patch->totalDofsPerCell, idx, patch->totalDofsPerCell, idx, zeroes, INSERT_VALUES));
1798: }
1799: PetscCall(MatGetLocalSize(*mat, &rows, NULL));
1800: for (i = 0; i < rows; ++i) PetscCall(MatSetValues(*mat, 1, &i, 1, &i, zeroes, INSERT_VALUES));
1802: if (patch->usercomputeopintfacet) {
1803: const PetscInt *intFacetsArray = NULL;
1804: PetscInt i, numIntFacets, intFacetOffset;
1805: const PetscInt *facetCells = NULL;
1807: PetscCall(PetscSectionGetDof(patch->intFacetCounts, point, &numIntFacets));
1808: PetscCall(PetscSectionGetOffset(patch->intFacetCounts, point, &intFacetOffset));
1809: PetscCall(ISGetIndices(patch->intFacetsToPatchCell, &facetCells));
1810: PetscCall(ISGetIndices(patch->intFacets, &intFacetsArray));
1811: for (i = 0; i < numIntFacets; i++) {
1812: const PetscInt cell0 = facetCells[2 * (intFacetOffset + i) + 0];
1813: const PetscInt cell1 = facetCells[2 * (intFacetOffset + i) + 1];
1814: const PetscInt *cell0idx = &dofsArray[(offset + cell0) * patch->totalDofsPerCell];
1815: const PetscInt *cell1idx = &dofsArray[(offset + cell1) * patch->totalDofsPerCell];
1816: PetscCall(MatSetValues(*mat, patch->totalDofsPerCell, cell0idx, patch->totalDofsPerCell, cell1idx, zeroes, INSERT_VALUES));
1817: PetscCall(MatSetValues(*mat, patch->totalDofsPerCell, cell1idx, patch->totalDofsPerCell, cell0idx, zeroes, INSERT_VALUES));
1818: }
1819: }
1821: PetscCall(MatAssemblyBegin(*mat, MAT_FINAL_ASSEMBLY));
1822: PetscCall(MatAssemblyEnd(*mat, MAT_FINAL_ASSEMBLY));
1824: PetscCall(PetscFree(zeroes));
1826: } else { /* rsize too big, use MATPREALLOCATOR */
1827: Mat preallocator;
1828: PetscScalar *vals;
1830: PetscCall(PetscCalloc1(patch->totalDofsPerCell * patch->totalDofsPerCell, &vals));
1831: PetscCall(MatCreate(PETSC_COMM_SELF, &preallocator));
1832: PetscCall(MatSetType(preallocator, MATPREALLOCATOR));
1833: PetscCall(MatSetSizes(preallocator, rsize, rsize, rsize, rsize));
1834: PetscCall(MatSetUp(preallocator));
1836: for (c = 0; c < ncell; ++c) {
1837: const PetscInt *idx = dofsArray + (offset + c) * patch->totalDofsPerCell;
1838: PetscCall(MatSetValues(preallocator, patch->totalDofsPerCell, idx, patch->totalDofsPerCell, idx, vals, INSERT_VALUES));
1839: }
1841: if (patch->usercomputeopintfacet) {
1842: const PetscInt *intFacetsArray = NULL;
1843: PetscInt i, numIntFacets, intFacetOffset;
1844: const PetscInt *facetCells = NULL;
1846: PetscCall(PetscSectionGetDof(patch->intFacetCounts, point, &numIntFacets));
1847: PetscCall(PetscSectionGetOffset(patch->intFacetCounts, point, &intFacetOffset));
1848: PetscCall(ISGetIndices(patch->intFacetsToPatchCell, &facetCells));
1849: PetscCall(ISGetIndices(patch->intFacets, &intFacetsArray));
1850: for (i = 0; i < numIntFacets; i++) {
1851: const PetscInt cell0 = facetCells[2 * (intFacetOffset + i) + 0];
1852: const PetscInt cell1 = facetCells[2 * (intFacetOffset + i) + 1];
1853: const PetscInt *cell0idx = &dofsArray[(offset + cell0) * patch->totalDofsPerCell];
1854: const PetscInt *cell1idx = &dofsArray[(offset + cell1) * patch->totalDofsPerCell];
1855: PetscCall(MatSetValues(preallocator, patch->totalDofsPerCell, cell0idx, patch->totalDofsPerCell, cell1idx, vals, INSERT_VALUES));
1856: PetscCall(MatSetValues(preallocator, patch->totalDofsPerCell, cell1idx, patch->totalDofsPerCell, cell0idx, vals, INSERT_VALUES));
1857: }
1858: }
1860: PetscCall(PetscFree(vals));
1861: PetscCall(MatAssemblyBegin(preallocator, MAT_FINAL_ASSEMBLY));
1862: PetscCall(MatAssemblyEnd(preallocator, MAT_FINAL_ASSEMBLY));
1863: PetscCall(MatPreallocatorPreallocate(preallocator, PETSC_TRUE, *mat));
1864: PetscCall(MatDestroy(&preallocator));
1865: }
1866: PetscCall(PetscLogEventEnd(PC_Patch_Prealloc, pc, 0, 0, 0));
1867: if (withArtificial) {
1868: PetscCall(ISRestoreIndices(patch->dofsWithArtificial, &dofsArray));
1869: } else {
1870: PetscCall(ISRestoreIndices(patch->dofs, &dofsArray));
1871: }
1872: }
1873: PetscCall(MatSetUp(*mat));
1874: PetscFunctionReturn(PETSC_SUCCESS);
1875: }
1877: 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)
1878: {
1879: PC_PATCH *patch = (PC_PATCH *)pc->data;
1880: DM dm, plex;
1881: PetscSection s;
1882: const PetscInt *parray, *oarray;
1883: PetscInt Nf = patch->nsubspaces, Np, poff, p, f;
1885: PetscFunctionBegin;
1886: PetscCheck(!patch->precomputeElementTensors, PetscObjectComm((PetscObject)pc), PETSC_ERR_ARG_WRONGSTATE, "Precomputing element tensors not implemented with DMPlex compute operator");
1887: PetscCall(PCGetDM(pc, &dm));
1888: PetscCall(DMConvert(dm, DMPLEX, &plex));
1889: dm = plex;
1890: PetscCall(DMGetLocalSection(dm, &s));
1891: /* Set offset into patch */
1892: PetscCall(PetscSectionGetDof(patch->pointCounts, patchNum, &Np));
1893: PetscCall(PetscSectionGetOffset(patch->pointCounts, patchNum, &poff));
1894: PetscCall(ISGetIndices(patch->points, &parray));
1895: PetscCall(ISGetIndices(patch->offs, &oarray));
1896: for (f = 0; f < Nf; ++f) {
1897: for (p = 0; p < Np; ++p) {
1898: const PetscInt point = parray[poff + p];
1899: PetscInt dof;
1901: PetscCall(PetscSectionGetFieldDof(patch->patchSection, point, f, &dof));
1902: PetscCall(PetscSectionSetFieldOffset(patch->patchSection, point, f, oarray[(poff + p) * Nf + f]));
1903: if (patch->nsubspaces == 1) PetscCall(PetscSectionSetOffset(patch->patchSection, point, oarray[(poff + p) * Nf + f]));
1904: else PetscCall(PetscSectionSetOffset(patch->patchSection, point, -1));
1905: }
1906: }
1907: PetscCall(ISRestoreIndices(patch->points, &parray));
1908: PetscCall(ISRestoreIndices(patch->offs, &oarray));
1909: if (patch->viewSection) PetscCall(ObjectView((PetscObject)patch->patchSection, patch->viewerSection, patch->formatSection));
1910: PetscCall(DMPlexComputeResidual_Patch_Internal(dm, patch->patchSection, cellIS, 0.0, x, NULL, F, ctx));
1911: PetscCall(DMDestroy(&dm));
1912: PetscFunctionReturn(PETSC_SUCCESS);
1913: }
1915: PetscErrorCode PCPatchComputeFunction_Internal(PC pc, Vec x, Vec F, PetscInt point)
1916: {
1917: PC_PATCH *patch = (PC_PATCH *)pc->data;
1918: const PetscInt *dofsArray;
1919: const PetscInt *dofsArrayWithAll;
1920: const PetscInt *cellsArray;
1921: PetscInt ncell, offset, pStart, pEnd;
1923: PetscFunctionBegin;
1924: PetscCall(PetscLogEventBegin(PC_Patch_ComputeOp, pc, 0, 0, 0));
1925: PetscCheck(patch->usercomputeop, PETSC_COMM_SELF, PETSC_ERR_ARG_WRONGSTATE, "Must call PCPatchSetComputeOperator() to set callback");
1926: PetscCall(ISGetIndices(patch->dofs, &dofsArray));
1927: PetscCall(ISGetIndices(patch->dofsWithAll, &dofsArrayWithAll));
1928: PetscCall(ISGetIndices(patch->cells, &cellsArray));
1929: PetscCall(PetscSectionGetChart(patch->cellCounts, &pStart, &pEnd));
1931: point += pStart;
1932: PetscCheck(point < pEnd, PETSC_COMM_SELF, PETSC_ERR_ARG_OUTOFRANGE, "Operator point %" PetscInt_FMT " not in [%" PetscInt_FMT ", %" PetscInt_FMT ")", point, pStart, pEnd);
1934: PetscCall(PetscSectionGetDof(patch->cellCounts, point, &ncell));
1935: PetscCall(PetscSectionGetOffset(patch->cellCounts, point, &offset));
1936: if (ncell <= 0) {
1937: PetscCall(PetscLogEventEnd(PC_Patch_ComputeOp, pc, 0, 0, 0));
1938: PetscFunctionReturn(PETSC_SUCCESS);
1939: }
1940: PetscCall(VecSet(F, 0.0));
1941: /* Cannot reuse the same IS because the geometry info is being cached in it */
1942: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, ncell, cellsArray + offset, PETSC_USE_POINTER, &patch->cellIS));
1943: PetscCallBack("PCPatch callback", patch->usercomputef(pc, point, x, F, patch->cellIS, ncell * patch->totalDofsPerCell, dofsArray + offset * patch->totalDofsPerCell, dofsArrayWithAll + offset * patch->totalDofsPerCell, patch->usercomputefctx));
1944: PetscCall(ISDestroy(&patch->cellIS));
1945: PetscCall(ISRestoreIndices(patch->dofs, &dofsArray));
1946: PetscCall(ISRestoreIndices(patch->dofsWithAll, &dofsArrayWithAll));
1947: PetscCall(ISRestoreIndices(patch->cells, &cellsArray));
1948: if (patch->viewMatrix) {
1949: char name[PETSC_MAX_PATH_LEN];
1951: PetscCall(PetscSNPrintf(name, PETSC_MAX_PATH_LEN - 1, "Patch vector for Point %" PetscInt_FMT, point));
1952: PetscCall(PetscObjectSetName((PetscObject)F, name));
1953: PetscCall(ObjectView((PetscObject)F, patch->viewerMatrix, patch->formatMatrix));
1954: }
1955: PetscCall(PetscLogEventEnd(PC_Patch_ComputeOp, pc, 0, 0, 0));
1956: PetscFunctionReturn(PETSC_SUCCESS);
1957: }
1959: 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)
1960: {
1961: PC_PATCH *patch = (PC_PATCH *)pc->data;
1962: DM dm, plex;
1963: PetscSection s;
1964: const PetscInt *parray, *oarray;
1965: PetscInt Nf = patch->nsubspaces, Np, poff, p, f;
1967: PetscFunctionBegin;
1968: PetscCall(PCGetDM(pc, &dm));
1969: PetscCall(DMConvert(dm, DMPLEX, &plex));
1970: dm = plex;
1971: PetscCall(DMGetLocalSection(dm, &s));
1972: /* Set offset into patch */
1973: PetscCall(PetscSectionGetDof(patch->pointCounts, patchNum, &Np));
1974: PetscCall(PetscSectionGetOffset(patch->pointCounts, patchNum, &poff));
1975: PetscCall(ISGetIndices(patch->points, &parray));
1976: PetscCall(ISGetIndices(patch->offs, &oarray));
1977: for (f = 0; f < Nf; ++f) {
1978: for (p = 0; p < Np; ++p) {
1979: const PetscInt point = parray[poff + p];
1980: PetscInt dof;
1982: PetscCall(PetscSectionGetFieldDof(patch->patchSection, point, f, &dof));
1983: PetscCall(PetscSectionSetFieldOffset(patch->patchSection, point, f, oarray[(poff + p) * Nf + f]));
1984: if (patch->nsubspaces == 1) PetscCall(PetscSectionSetOffset(patch->patchSection, point, oarray[(poff + p) * Nf + f]));
1985: else PetscCall(PetscSectionSetOffset(patch->patchSection, point, -1));
1986: }
1987: }
1988: PetscCall(ISRestoreIndices(patch->points, &parray));
1989: PetscCall(ISRestoreIndices(patch->offs, &oarray));
1990: if (patch->viewSection) PetscCall(ObjectView((PetscObject)patch->patchSection, patch->viewerSection, patch->formatSection));
1991: /* TODO Shut off MatViewFromOptions() in MatAssemblyEnd() here */
1992: PetscCall(DMPlexComputeJacobian_Patch_Internal(dm, patch->patchSection, patch->patchSection, cellIS, 0.0, 0.0, x, NULL, J, J, ctx));
1993: PetscCall(DMDestroy(&dm));
1994: PetscFunctionReturn(PETSC_SUCCESS);
1995: }
1997: /* This function zeros mat on entry */
1998: PetscErrorCode PCPatchComputeOperator_Internal(PC pc, Vec x, Mat mat, PetscInt point, PetscBool withArtificial)
1999: {
2000: PC_PATCH *patch = (PC_PATCH *)pc->data;
2001: const PetscInt *dofsArray;
2002: const PetscInt *dofsArrayWithAll = NULL;
2003: const PetscInt *cellsArray;
2004: PetscInt ncell, offset, pStart, pEnd, numIntFacets, intFacetOffset;
2005: PetscBool isNonlinear;
2007: PetscFunctionBegin;
2008: PetscCall(PetscLogEventBegin(PC_Patch_ComputeOp, pc, 0, 0, 0));
2009: isNonlinear = patch->isNonlinear;
2010: PetscCheck(patch->usercomputeop, PETSC_COMM_SELF, PETSC_ERR_ARG_WRONGSTATE, "Must call PCPatchSetComputeOperator() to set callback");
2011: if (withArtificial) {
2012: PetscCall(ISGetIndices(patch->dofsWithArtificial, &dofsArray));
2013: } else {
2014: PetscCall(ISGetIndices(patch->dofs, &dofsArray));
2015: }
2016: if (isNonlinear) PetscCall(ISGetIndices(patch->dofsWithAll, &dofsArrayWithAll));
2017: PetscCall(ISGetIndices(patch->cells, &cellsArray));
2018: PetscCall(PetscSectionGetChart(patch->cellCounts, &pStart, &pEnd));
2020: point += pStart;
2021: PetscCheck(point < pEnd, PETSC_COMM_SELF, PETSC_ERR_ARG_OUTOFRANGE, "Operator point %" PetscInt_FMT " not in [%" PetscInt_FMT ", %" PetscInt_FMT ")", point, pStart, pEnd);
2023: PetscCall(PetscSectionGetDof(patch->cellCounts, point, &ncell));
2024: PetscCall(PetscSectionGetOffset(patch->cellCounts, point, &offset));
2025: if (ncell <= 0) {
2026: PetscCall(PetscLogEventEnd(PC_Patch_ComputeOp, pc, 0, 0, 0));
2027: PetscFunctionReturn(PETSC_SUCCESS);
2028: }
2029: PetscCall(MatZeroEntries(mat));
2030: if (patch->precomputeElementTensors) {
2031: PetscInt i;
2032: PetscInt ndof = patch->totalDofsPerCell;
2033: const PetscScalar *elementTensors;
2035: PetscCall(VecGetArrayRead(patch->cellMats, &elementTensors));
2036: for (i = 0; i < ncell; i++) {
2037: const PetscInt cell = cellsArray[i + offset];
2038: const PetscInt *idx = dofsArray + (offset + i) * ndof;
2039: const PetscScalar *v = elementTensors + patch->precomputedTensorLocations[cell] * ndof * ndof;
2040: PetscCall(MatSetValues(mat, ndof, idx, ndof, idx, v, ADD_VALUES));
2041: }
2042: PetscCall(VecRestoreArrayRead(patch->cellMats, &elementTensors));
2043: PetscCall(MatAssemblyBegin(mat, MAT_FINAL_ASSEMBLY));
2044: PetscCall(MatAssemblyEnd(mat, MAT_FINAL_ASSEMBLY));
2045: } else {
2046: /* Cannot reuse the same IS because the geometry info is being cached in it */
2047: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, ncell, cellsArray + offset, PETSC_USE_POINTER, &patch->cellIS));
2048: PetscCallBack("PCPatch callback",
2049: patch->usercomputeop(pc, point, x, mat, patch->cellIS, ncell * patch->totalDofsPerCell, dofsArray + offset * patch->totalDofsPerCell, dofsArrayWithAll ? dofsArrayWithAll + offset * patch->totalDofsPerCell : NULL, patch->usercomputeopctx));
2050: }
2051: if (patch->usercomputeopintfacet) {
2052: PetscCall(PetscSectionGetDof(patch->intFacetCounts, point, &numIntFacets));
2053: PetscCall(PetscSectionGetOffset(patch->intFacetCounts, point, &intFacetOffset));
2054: if (numIntFacets > 0) {
2055: /* For each interior facet, grab the two cells (in local numbering, and concatenate dof numberings for those cells) */
2056: PetscInt *facetDofs = NULL, *facetDofsWithAll = NULL;
2057: const PetscInt *intFacetsArray = NULL;
2058: PetscInt idx = 0;
2059: PetscInt i, c, d;
2060: PetscInt fStart;
2061: DM dm, plex;
2062: IS facetIS = NULL;
2063: const PetscInt *facetCells = NULL;
2065: PetscCall(ISGetIndices(patch->intFacetsToPatchCell, &facetCells));
2066: PetscCall(ISGetIndices(patch->intFacets, &intFacetsArray));
2067: PetscCall(PCGetDM(pc, &dm));
2068: PetscCall(DMConvert(dm, DMPLEX, &plex));
2069: dm = plex;
2070: PetscCall(DMPlexGetHeightStratum(dm, 1, &fStart, NULL));
2071: /* FIXME: Pull this malloc out. */
2072: PetscCall(PetscMalloc1(2 * patch->totalDofsPerCell * numIntFacets, &facetDofs));
2073: if (dofsArrayWithAll) PetscCall(PetscMalloc1(2 * patch->totalDofsPerCell * numIntFacets, &facetDofsWithAll));
2074: if (patch->precomputeElementTensors) {
2075: PetscInt nFacetDof = 2 * patch->totalDofsPerCell;
2076: const PetscScalar *elementTensors;
2078: PetscCall(VecGetArrayRead(patch->intFacetMats, &elementTensors));
2080: for (i = 0; i < numIntFacets; i++) {
2081: const PetscInt facet = intFacetsArray[i + intFacetOffset];
2082: const PetscScalar *v = elementTensors + patch->precomputedIntFacetTensorLocations[facet - fStart] * nFacetDof * nFacetDof;
2083: idx = 0;
2084: /*
2085: 0--1
2086: |\-|
2087: |+\|
2088: 2--3
2089: [0, 2, 3, 0, 1, 3]
2090: */
2091: for (c = 0; c < 2; c++) {
2092: const PetscInt cell = facetCells[2 * (intFacetOffset + i) + c];
2093: for (d = 0; d < patch->totalDofsPerCell; d++) {
2094: facetDofs[idx] = dofsArray[(offset + cell) * patch->totalDofsPerCell + d];
2095: idx++;
2096: }
2097: }
2098: PetscCall(MatSetValues(mat, nFacetDof, facetDofs, nFacetDof, facetDofs, v, ADD_VALUES));
2099: }
2100: PetscCall(VecRestoreArrayRead(patch->intFacetMats, &elementTensors));
2101: } else {
2102: /*
2103: 0--1
2104: |\-|
2105: |+\|
2106: 2--3
2107: [0, 2, 3, 0, 1, 3]
2108: */
2109: for (i = 0; i < numIntFacets; i++) {
2110: for (c = 0; c < 2; c++) {
2111: const PetscInt cell = facetCells[2 * (intFacetOffset + i) + c];
2112: for (d = 0; d < patch->totalDofsPerCell; d++) {
2113: facetDofs[idx] = dofsArray[(offset + cell) * patch->totalDofsPerCell + d];
2114: if (dofsArrayWithAll) facetDofsWithAll[idx] = dofsArrayWithAll[(offset + cell) * patch->totalDofsPerCell + d];
2115: idx++;
2116: }
2117: }
2118: }
2119: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numIntFacets, intFacetsArray + intFacetOffset, PETSC_USE_POINTER, &facetIS));
2120: PetscCall(patch->usercomputeopintfacet(pc, point, x, mat, facetIS, 2 * numIntFacets * patch->totalDofsPerCell, facetDofs, facetDofsWithAll, patch->usercomputeopintfacetctx));
2121: PetscCall(ISDestroy(&facetIS));
2122: }
2123: PetscCall(ISRestoreIndices(patch->intFacetsToPatchCell, &facetCells));
2124: PetscCall(ISRestoreIndices(patch->intFacets, &intFacetsArray));
2125: PetscCall(PetscFree(facetDofs));
2126: PetscCall(PetscFree(facetDofsWithAll));
2127: PetscCall(DMDestroy(&dm));
2128: }
2129: }
2131: PetscCall(MatAssemblyBegin(mat, MAT_FINAL_ASSEMBLY));
2132: PetscCall(MatAssemblyEnd(mat, MAT_FINAL_ASSEMBLY));
2134: if (!(withArtificial || isNonlinear) && patch->denseinverse) {
2135: MatFactorInfo info;
2136: PetscBool flg;
2137: PetscCall(PetscObjectTypeCompare((PetscObject)mat, MATSEQDENSE, &flg));
2138: PetscCheck(flg, PetscObjectComm((PetscObject)pc), PETSC_ERR_ARG_WRONGSTATE, "Invalid Mat type for dense inverse");
2139: PetscCall(MatFactorInfoInitialize(&info));
2140: PetscCall(MatLUFactor(mat, NULL, NULL, &info));
2141: PetscCall(MatSeqDenseInvertFactors_Private(mat));
2142: }
2143: PetscCall(ISDestroy(&patch->cellIS));
2144: if (withArtificial) {
2145: PetscCall(ISRestoreIndices(patch->dofsWithArtificial, &dofsArray));
2146: } else {
2147: PetscCall(ISRestoreIndices(patch->dofs, &dofsArray));
2148: }
2149: if (isNonlinear) PetscCall(ISRestoreIndices(patch->dofsWithAll, &dofsArrayWithAll));
2150: PetscCall(ISRestoreIndices(patch->cells, &cellsArray));
2151: if (patch->viewMatrix) {
2152: char name[PETSC_MAX_PATH_LEN];
2154: PetscCall(PetscSNPrintf(name, PETSC_MAX_PATH_LEN - 1, "Patch matrix for Point %" PetscInt_FMT, point));
2155: PetscCall(PetscObjectSetName((PetscObject)mat, name));
2156: PetscCall(ObjectView((PetscObject)mat, patch->viewerMatrix, patch->formatMatrix));
2157: }
2158: PetscCall(PetscLogEventEnd(PC_Patch_ComputeOp, pc, 0, 0, 0));
2159: PetscFunctionReturn(PETSC_SUCCESS);
2160: }
2162: static PetscErrorCode MatSetValues_PCPatch_Private(Mat mat, PetscInt m, const PetscInt idxm[], PetscInt n, const PetscInt idxn[], const PetscScalar *v, InsertMode addv)
2163: {
2164: Vec data;
2165: PetscScalar *array;
2166: PetscInt bs, nz, i, j, cell;
2168: PetscCall(MatShellGetContext(mat, &data));
2169: PetscCall(VecGetBlockSize(data, &bs));
2170: PetscCall(VecGetSize(data, &nz));
2171: PetscCall(VecGetArray(data, &array));
2172: PetscCheck(m == n, PetscObjectComm((PetscObject)mat), PETSC_ERR_ARG_WRONG, "Only for square insertion");
2173: cell = (PetscInt)(idxm[0] / bs); /* use the fact that this is called once per cell */
2174: for (i = 0; i < m; i++) {
2175: PetscCheck(idxm[i] == idxn[i], PetscObjectComm((PetscObject)mat), PETSC_ERR_ARG_WRONG, "Row and column indices must match!");
2176: for (j = 0; j < n; j++) {
2177: const PetscScalar v_ = v[i * bs + j];
2178: /* Indexing is special to the data structure we have! */
2179: if (addv == INSERT_VALUES) {
2180: array[cell * bs * bs + i * bs + j] = v_;
2181: } else {
2182: array[cell * bs * bs + i * bs + j] += v_;
2183: }
2184: }
2185: }
2186: PetscCall(VecRestoreArray(data, &array));
2187: PetscFunctionReturn(PETSC_SUCCESS);
2188: }
2190: static PetscErrorCode PCPatchPrecomputePatchTensors_Private(PC pc)
2191: {
2192: PC_PATCH *patch = (PC_PATCH *)pc->data;
2193: const PetscInt *cellsArray;
2194: PetscInt ncell, offset;
2195: const PetscInt *dofMapArray;
2196: PetscInt i, j;
2197: IS dofMap;
2198: IS cellIS;
2199: const PetscInt ndof = patch->totalDofsPerCell;
2200: Mat vecMat;
2201: PetscInt cStart, cEnd;
2202: DM dm, plex;
2204: PetscCall(ISGetSize(patch->cells, &ncell));
2205: if (!ncell) { /* No cells to assemble over -> skip */
2206: PetscFunctionReturn(PETSC_SUCCESS);
2207: }
2209: PetscCall(PetscLogEventBegin(PC_Patch_ComputeOp, pc, 0, 0, 0));
2211: PetscCall(PCGetDM(pc, &dm));
2212: PetscCall(DMConvert(dm, DMPLEX, &plex));
2213: dm = plex;
2214: if (!patch->allCells) {
2215: PetscHSetI cells;
2216: PetscHashIter hi;
2217: PetscInt pStart, pEnd;
2218: PetscInt *allCells = NULL;
2219: PetscCall(PetscHSetICreate(&cells));
2220: PetscCall(ISGetIndices(patch->cells, &cellsArray));
2221: PetscCall(PetscSectionGetChart(patch->cellCounts, &pStart, &pEnd));
2222: for (i = pStart; i < pEnd; i++) {
2223: PetscCall(PetscSectionGetDof(patch->cellCounts, i, &ncell));
2224: PetscCall(PetscSectionGetOffset(patch->cellCounts, i, &offset));
2225: if (ncell <= 0) continue;
2226: for (j = 0; j < ncell; j++) PetscCall(PetscHSetIAdd(cells, cellsArray[offset + j]));
2227: }
2228: PetscCall(ISRestoreIndices(patch->cells, &cellsArray));
2229: PetscCall(PetscHSetIGetSize(cells, &ncell));
2230: PetscCall(PetscMalloc1(ncell, &allCells));
2231: PetscCall(DMPlexGetHeightStratum(dm, 0, &cStart, &cEnd));
2232: PetscCall(PetscMalloc1(cEnd - cStart, &patch->precomputedTensorLocations));
2233: i = 0;
2234: PetscHashIterBegin(cells, hi);
2235: while (!PetscHashIterAtEnd(cells, hi)) {
2236: PetscHashIterGetKey(cells, hi, allCells[i]);
2237: patch->precomputedTensorLocations[allCells[i]] = i;
2238: PetscHashIterNext(cells, hi);
2239: i++;
2240: }
2241: PetscCall(PetscHSetIDestroy(&cells));
2242: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, ncell, allCells, PETSC_OWN_POINTER, &patch->allCells));
2243: }
2244: PetscCall(ISGetSize(patch->allCells, &ncell));
2245: if (!patch->cellMats) {
2246: PetscCall(VecCreateSeq(PETSC_COMM_SELF, ncell * ndof * ndof, &patch->cellMats));
2247: PetscCall(VecSetBlockSize(patch->cellMats, ndof));
2248: }
2249: PetscCall(VecSet(patch->cellMats, 0));
2251: PetscCall(MatCreateShell(PETSC_COMM_SELF, ncell * ndof, ncell * ndof, ncell * ndof, ncell * ndof, (void *)patch->cellMats, &vecMat));
2252: PetscCall(MatShellSetOperation(vecMat, MATOP_SET_VALUES, (void (*)(void)) & MatSetValues_PCPatch_Private));
2253: PetscCall(ISGetSize(patch->allCells, &ncell));
2254: PetscCall(ISCreateStride(PETSC_COMM_SELF, ndof * ncell, 0, 1, &dofMap));
2255: PetscCall(ISGetIndices(dofMap, &dofMapArray));
2256: PetscCall(ISGetIndices(patch->allCells, &cellsArray));
2257: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, ncell, cellsArray, PETSC_USE_POINTER, &cellIS));
2258: /* TODO: Fix for DMPlex compute op, this bypasses a lot of the machinery and just assembles every element tensor. */
2259: PetscCallBack("PCPatch callback", patch->usercomputeop(pc, -1, NULL, vecMat, cellIS, ndof * ncell, dofMapArray, NULL, patch->usercomputeopctx));
2260: PetscCall(ISDestroy(&cellIS));
2261: PetscCall(MatDestroy(&vecMat));
2262: PetscCall(ISRestoreIndices(patch->allCells, &cellsArray));
2263: PetscCall(ISRestoreIndices(dofMap, &dofMapArray));
2264: PetscCall(ISDestroy(&dofMap));
2266: if (patch->usercomputeopintfacet) {
2267: PetscInt nIntFacets;
2268: IS intFacetsIS;
2269: const PetscInt *intFacetsArray = NULL;
2270: if (!patch->allIntFacets) {
2271: PetscHSetI facets;
2272: PetscHashIter hi;
2273: PetscInt pStart, pEnd, fStart, fEnd;
2274: PetscInt *allIntFacets = NULL;
2275: PetscCall(PetscHSetICreate(&facets));
2276: PetscCall(ISGetIndices(patch->intFacets, &intFacetsArray));
2277: PetscCall(PetscSectionGetChart(patch->intFacetCounts, &pStart, &pEnd));
2278: PetscCall(DMPlexGetHeightStratum(dm, 1, &fStart, &fEnd));
2279: for (i = pStart; i < pEnd; i++) {
2280: PetscCall(PetscSectionGetDof(patch->intFacetCounts, i, &nIntFacets));
2281: PetscCall(PetscSectionGetOffset(patch->intFacetCounts, i, &offset));
2282: if (nIntFacets <= 0) continue;
2283: for (j = 0; j < nIntFacets; j++) PetscCall(PetscHSetIAdd(facets, intFacetsArray[offset + j]));
2284: }
2285: PetscCall(ISRestoreIndices(patch->intFacets, &intFacetsArray));
2286: PetscCall(PetscHSetIGetSize(facets, &nIntFacets));
2287: PetscCall(PetscMalloc1(nIntFacets, &allIntFacets));
2288: PetscCall(PetscMalloc1(fEnd - fStart, &patch->precomputedIntFacetTensorLocations));
2289: i = 0;
2290: PetscHashIterBegin(facets, hi);
2291: while (!PetscHashIterAtEnd(facets, hi)) {
2292: PetscHashIterGetKey(facets, hi, allIntFacets[i]);
2293: patch->precomputedIntFacetTensorLocations[allIntFacets[i] - fStart] = i;
2294: PetscHashIterNext(facets, hi);
2295: i++;
2296: }
2297: PetscCall(PetscHSetIDestroy(&facets));
2298: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, nIntFacets, allIntFacets, PETSC_OWN_POINTER, &patch->allIntFacets));
2299: }
2300: PetscCall(ISGetSize(patch->allIntFacets, &nIntFacets));
2301: if (!patch->intFacetMats) {
2302: PetscCall(VecCreateSeq(PETSC_COMM_SELF, nIntFacets * ndof * ndof * 4, &patch->intFacetMats));
2303: PetscCall(VecSetBlockSize(patch->intFacetMats, ndof * 2));
2304: }
2305: PetscCall(VecSet(patch->intFacetMats, 0));
2307: PetscCall(MatCreateShell(PETSC_COMM_SELF, nIntFacets * ndof * 2, nIntFacets * ndof * 2, nIntFacets * ndof * 2, nIntFacets * ndof * 2, (void *)patch->intFacetMats, &vecMat));
2308: PetscCall(MatShellSetOperation(vecMat, MATOP_SET_VALUES, (void (*)(void)) & MatSetValues_PCPatch_Private));
2309: PetscCall(ISCreateStride(PETSC_COMM_SELF, 2 * ndof * nIntFacets, 0, 1, &dofMap));
2310: PetscCall(ISGetIndices(dofMap, &dofMapArray));
2311: PetscCall(ISGetIndices(patch->allIntFacets, &intFacetsArray));
2312: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, nIntFacets, intFacetsArray, PETSC_USE_POINTER, &intFacetsIS));
2313: /* TODO: Fix for DMPlex compute op, this bypasses a lot of the machinery and just assembles every element tensor. */
2314: PetscCallBack("PCPatch callback (interior facets)", patch->usercomputeopintfacet(pc, -1, NULL, vecMat, intFacetsIS, 2 * ndof * nIntFacets, dofMapArray, NULL, patch->usercomputeopintfacetctx));
2315: PetscCall(ISDestroy(&intFacetsIS));
2316: PetscCall(MatDestroy(&vecMat));
2317: PetscCall(ISRestoreIndices(patch->allIntFacets, &intFacetsArray));
2318: PetscCall(ISRestoreIndices(dofMap, &dofMapArray));
2319: PetscCall(ISDestroy(&dofMap));
2320: }
2321: PetscCall(DMDestroy(&dm));
2322: PetscCall(PetscLogEventEnd(PC_Patch_ComputeOp, pc, 0, 0, 0));
2323: PetscFunctionReturn(PETSC_SUCCESS);
2324: }
2326: PetscErrorCode PCPatch_ScatterLocal_Private(PC pc, PetscInt p, Vec x, Vec y, InsertMode mode, ScatterMode scat, PatchScatterType scattertype)
2327: {
2328: PC_PATCH *patch = (PC_PATCH *)pc->data;
2329: const PetscScalar *xArray = NULL;
2330: PetscScalar *yArray = NULL;
2331: const PetscInt *gtolArray = NULL;
2332: PetscInt dof, offset, lidx;
2334: PetscFunctionBeginHot;
2335: PetscCall(VecGetArrayRead(x, &xArray));
2336: PetscCall(VecGetArray(y, &yArray));
2337: if (scattertype == SCATTER_WITHARTIFICIAL) {
2338: PetscCall(PetscSectionGetDof(patch->gtolCountsWithArtificial, p, &dof));
2339: PetscCall(PetscSectionGetOffset(patch->gtolCountsWithArtificial, p, &offset));
2340: PetscCall(ISGetIndices(patch->gtolWithArtificial, >olArray));
2341: } else if (scattertype == SCATTER_WITHALL) {
2342: PetscCall(PetscSectionGetDof(patch->gtolCountsWithAll, p, &dof));
2343: PetscCall(PetscSectionGetOffset(patch->gtolCountsWithAll, p, &offset));
2344: PetscCall(ISGetIndices(patch->gtolWithAll, >olArray));
2345: } else {
2346: PetscCall(PetscSectionGetDof(patch->gtolCounts, p, &dof));
2347: PetscCall(PetscSectionGetOffset(patch->gtolCounts, p, &offset));
2348: PetscCall(ISGetIndices(patch->gtol, >olArray));
2349: }
2350: PetscCheck(mode != INSERT_VALUES || scat == SCATTER_FORWARD, PETSC_COMM_SELF, PETSC_ERR_ARG_INCOMP, "Can't insert if not scattering forward");
2351: PetscCheck(mode != ADD_VALUES || scat == SCATTER_REVERSE, PETSC_COMM_SELF, PETSC_ERR_ARG_INCOMP, "Can't add if not scattering reverse");
2352: for (lidx = 0; lidx < dof; ++lidx) {
2353: const PetscInt gidx = gtolArray[offset + lidx];
2355: if (mode == INSERT_VALUES) yArray[lidx] = xArray[gidx]; /* Forward */
2356: else yArray[gidx] += xArray[lidx]; /* Reverse */
2357: }
2358: if (scattertype == SCATTER_WITHARTIFICIAL) {
2359: PetscCall(ISRestoreIndices(patch->gtolWithArtificial, >olArray));
2360: } else if (scattertype == SCATTER_WITHALL) {
2361: PetscCall(ISRestoreIndices(patch->gtolWithAll, >olArray));
2362: } else {
2363: PetscCall(ISRestoreIndices(patch->gtol, >olArray));
2364: }
2365: PetscCall(VecRestoreArrayRead(x, &xArray));
2366: PetscCall(VecRestoreArray(y, &yArray));
2367: PetscFunctionReturn(PETSC_SUCCESS);
2368: }
2370: static PetscErrorCode PCSetUp_PATCH_Linear(PC pc)
2371: {
2372: PC_PATCH *patch = (PC_PATCH *)pc->data;
2373: const char *prefix;
2374: PetscInt i;
2376: PetscFunctionBegin;
2377: if (!pc->setupcalled) {
2378: PetscCheck(patch->save_operators || !patch->denseinverse, PetscObjectComm((PetscObject)pc), PETSC_ERR_ARG_WRONGSTATE, "Can't have dense inverse without save operators");
2379: if (!patch->denseinverse) {
2380: PetscCall(PetscMalloc1(patch->npatch, &patch->solver));
2381: PetscCall(PCGetOptionsPrefix(pc, &prefix));
2382: for (i = 0; i < patch->npatch; ++i) {
2383: KSP ksp;
2384: PC subpc;
2386: PetscCall(KSPCreate(PETSC_COMM_SELF, &ksp));
2387: PetscCall(KSPSetNestLevel(ksp, pc->kspnestlevel));
2388: PetscCall(KSPSetErrorIfNotConverged(ksp, pc->erroriffailure));
2389: PetscCall(KSPSetOptionsPrefix(ksp, prefix));
2390: PetscCall(KSPAppendOptionsPrefix(ksp, "sub_"));
2391: PetscCall(PetscObjectIncrementTabLevel((PetscObject)ksp, (PetscObject)pc, 1));
2392: PetscCall(KSPGetPC(ksp, &subpc));
2393: PetscCall(PetscObjectIncrementTabLevel((PetscObject)subpc, (PetscObject)pc, 1));
2394: patch->solver[i] = (PetscObject)ksp;
2395: }
2396: }
2397: }
2398: if (patch->save_operators) {
2399: if (patch->precomputeElementTensors) PetscCall(PCPatchPrecomputePatchTensors_Private(pc));
2400: for (i = 0; i < patch->npatch; ++i) {
2401: PetscCall(PCPatchComputeOperator_Internal(pc, NULL, patch->mat[i], i, PETSC_FALSE));
2402: if (!patch->denseinverse) {
2403: PetscCall(KSPSetOperators((KSP)patch->solver[i], patch->mat[i], patch->mat[i]));
2404: } else if (patch->mat[i] && !patch->densesolve) {
2405: /* Setup matmult callback */
2406: PetscCall(MatGetOperation(patch->mat[i], MATOP_MULT, (void (**)(void)) & patch->densesolve));
2407: }
2408: }
2409: }
2410: if (patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) {
2411: for (i = 0; i < patch->npatch; ++i) {
2412: /* Instead of padding patch->patchUpdate with zeros to get */
2413: /* patch->patchUpdateWithArtificial and then multiplying with the matrix, */
2414: /* just get rid of the columns that correspond to the dofs with */
2415: /* artificial bcs. That's of course fairly inefficient, hopefully we */
2416: /* can just assemble the rectangular matrix in the first place. */
2417: Mat matSquare;
2418: IS rowis;
2419: PetscInt dof;
2421: PetscCall(MatGetSize(patch->mat[i], &dof, NULL));
2422: if (dof == 0) {
2423: patch->matWithArtificial[i] = NULL;
2424: continue;
2425: }
2427: PetscCall(PCPatchCreateMatrix_Private(pc, i, &matSquare, PETSC_TRUE));
2428: PetscCall(PCPatchComputeOperator_Internal(pc, NULL, matSquare, i, PETSC_TRUE));
2430: PetscCall(MatGetSize(matSquare, &dof, NULL));
2431: PetscCall(ISCreateStride(PETSC_COMM_SELF, dof, 0, 1, &rowis));
2432: if (pc->setupcalled) {
2433: PetscCall(MatCreateSubMatrix(matSquare, rowis, patch->dofMappingWithoutToWithArtificial[i], MAT_REUSE_MATRIX, &patch->matWithArtificial[i]));
2434: } else {
2435: PetscCall(MatCreateSubMatrix(matSquare, rowis, patch->dofMappingWithoutToWithArtificial[i], MAT_INITIAL_MATRIX, &patch->matWithArtificial[i]));
2436: }
2437: PetscCall(ISDestroy(&rowis));
2438: PetscCall(MatDestroy(&matSquare));
2439: }
2440: }
2441: PetscFunctionReturn(PETSC_SUCCESS);
2442: }
2444: static PetscErrorCode PCSetUp_PATCH(PC pc)
2445: {
2446: PC_PATCH *patch = (PC_PATCH *)pc->data;
2447: PetscInt i;
2448: PetscBool isNonlinear;
2449: PetscInt maxDof = -1, maxDofWithArtificial = -1;
2451: PetscFunctionBegin;
2452: if (!pc->setupcalled) {
2453: PetscInt pStart, pEnd, p;
2454: PetscInt localSize;
2456: PetscCall(PetscLogEventBegin(PC_Patch_CreatePatches, pc, 0, 0, 0));
2458: isNonlinear = patch->isNonlinear;
2459: if (!patch->nsubspaces) {
2460: DM dm, plex;
2461: PetscSection s;
2462: PetscInt cStart, cEnd, c, Nf, f, numGlobalBcs = 0, *globalBcs, *Nb, **cellDofs;
2464: PetscCall(PCGetDM(pc, &dm));
2465: PetscCheck(dm, PetscObjectComm((PetscObject)pc), PETSC_ERR_ARG_WRONG, "Must set DM for PCPATCH or call PCPatchSetDiscretisationInfo()");
2466: PetscCall(DMConvert(dm, DMPLEX, &plex));
2467: dm = plex;
2468: PetscCall(DMGetLocalSection(dm, &s));
2469: PetscCall(PetscSectionGetNumFields(s, &Nf));
2470: PetscCall(PetscSectionGetChart(s, &pStart, &pEnd));
2471: for (p = pStart; p < pEnd; ++p) {
2472: PetscInt cdof;
2473: PetscCall(PetscSectionGetConstraintDof(s, p, &cdof));
2474: numGlobalBcs += cdof;
2475: }
2476: PetscCall(DMPlexGetHeightStratum(dm, 0, &cStart, &cEnd));
2477: PetscCall(PetscMalloc3(Nf, &Nb, Nf, &cellDofs, numGlobalBcs, &globalBcs));
2478: for (f = 0; f < Nf; ++f) {
2479: PetscFE fe;
2480: PetscDualSpace sp;
2481: PetscInt cdoff = 0;
2483: PetscCall(DMGetField(dm, f, NULL, (PetscObject *)&fe));
2484: /* PetscCall(PetscFEGetNumComponents(fe, &Nc[f])); */
2485: PetscCall(PetscFEGetDualSpace(fe, &sp));
2486: PetscCall(PetscDualSpaceGetDimension(sp, &Nb[f]));
2488: PetscCall(PetscMalloc1((cEnd - cStart) * Nb[f], &cellDofs[f]));
2489: for (c = cStart; c < cEnd; ++c) {
2490: PetscInt *closure = NULL;
2491: PetscInt clSize = 0, cl;
2493: PetscCall(DMPlexGetTransitiveClosure(dm, c, PETSC_TRUE, &clSize, &closure));
2494: for (cl = 0; cl < clSize * 2; cl += 2) {
2495: const PetscInt p = closure[cl];
2496: PetscInt fdof, d, foff;
2498: PetscCall(PetscSectionGetFieldDof(s, p, f, &fdof));
2499: PetscCall(PetscSectionGetFieldOffset(s, p, f, &foff));
2500: for (d = 0; d < fdof; ++d, ++cdoff) cellDofs[f][cdoff] = foff + d;
2501: }
2502: PetscCall(DMPlexRestoreTransitiveClosure(dm, c, PETSC_TRUE, &clSize, &closure));
2503: }
2504: 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]);
2505: }
2506: numGlobalBcs = 0;
2507: for (p = pStart; p < pEnd; ++p) {
2508: const PetscInt *ind;
2509: PetscInt off, cdof, d;
2511: PetscCall(PetscSectionGetOffset(s, p, &off));
2512: PetscCall(PetscSectionGetConstraintDof(s, p, &cdof));
2513: PetscCall(PetscSectionGetConstraintIndices(s, p, &ind));
2514: for (d = 0; d < cdof; ++d) globalBcs[numGlobalBcs++] = off + ind[d];
2515: }
2517: PetscCall(PCPatchSetDiscretisationInfoCombined(pc, dm, Nb, (const PetscInt **)cellDofs, numGlobalBcs, globalBcs, numGlobalBcs, globalBcs));
2518: for (f = 0; f < Nf; ++f) PetscCall(PetscFree(cellDofs[f]));
2519: PetscCall(PetscFree3(Nb, cellDofs, globalBcs));
2520: PetscCall(PCPatchSetComputeFunction(pc, PCPatchComputeFunction_DMPlex_Private, NULL));
2521: PetscCall(PCPatchSetComputeOperator(pc, PCPatchComputeOperator_DMPlex_Private, NULL));
2522: PetscCall(DMDestroy(&dm));
2523: }
2525: localSize = patch->subspaceOffsets[patch->nsubspaces];
2526: PetscCall(VecCreateSeq(PETSC_COMM_SELF, localSize, &patch->localRHS));
2527: PetscCall(VecSetUp(patch->localRHS));
2528: PetscCall(VecDuplicate(patch->localRHS, &patch->localUpdate));
2529: PetscCall(PCPatchCreateCellPatches(pc));
2530: PetscCall(PCPatchCreateCellPatchDiscretisationInfo(pc));
2532: /* OK, now build the work vectors */
2533: PetscCall(PetscSectionGetChart(patch->gtolCounts, &pStart, &pEnd));
2535: if (patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) PetscCall(PetscMalloc1(patch->npatch, &patch->dofMappingWithoutToWithArtificial));
2536: if (isNonlinear) PetscCall(PetscMalloc1(patch->npatch, &patch->dofMappingWithoutToWithAll));
2537: for (p = pStart; p < pEnd; ++p) {
2538: PetscInt dof;
2540: PetscCall(PetscSectionGetDof(patch->gtolCounts, p, &dof));
2541: maxDof = PetscMax(maxDof, dof);
2542: if (patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) {
2543: const PetscInt *gtolArray, *gtolArrayWithArtificial = NULL;
2544: PetscInt numPatchDofs, offset;
2545: PetscInt numPatchDofsWithArtificial, offsetWithArtificial;
2546: PetscInt dofWithoutArtificialCounter = 0;
2547: PetscInt *patchWithoutArtificialToWithArtificialArray;
2549: PetscCall(PetscSectionGetDof(patch->gtolCountsWithArtificial, p, &dof));
2550: maxDofWithArtificial = PetscMax(maxDofWithArtificial, dof);
2552: /* Now build the mapping that for a dof in a patch WITHOUT dofs that have artificial bcs gives the */
2553: /* the index in the patch with all dofs */
2554: PetscCall(ISGetIndices(patch->gtol, >olArray));
2556: PetscCall(PetscSectionGetDof(patch->gtolCounts, p, &numPatchDofs));
2557: if (numPatchDofs == 0) {
2558: patch->dofMappingWithoutToWithArtificial[p - pStart] = NULL;
2559: continue;
2560: }
2562: PetscCall(PetscSectionGetOffset(patch->gtolCounts, p, &offset));
2563: PetscCall(ISGetIndices(patch->gtolWithArtificial, >olArrayWithArtificial));
2564: PetscCall(PetscSectionGetDof(patch->gtolCountsWithArtificial, p, &numPatchDofsWithArtificial));
2565: PetscCall(PetscSectionGetOffset(patch->gtolCountsWithArtificial, p, &offsetWithArtificial));
2567: PetscCall(PetscMalloc1(numPatchDofs, &patchWithoutArtificialToWithArtificialArray));
2568: for (i = 0; i < numPatchDofsWithArtificial; i++) {
2569: if (gtolArrayWithArtificial[i + offsetWithArtificial] == gtolArray[offset + dofWithoutArtificialCounter]) {
2570: patchWithoutArtificialToWithArtificialArray[dofWithoutArtificialCounter] = i;
2571: dofWithoutArtificialCounter++;
2572: if (dofWithoutArtificialCounter == numPatchDofs) break;
2573: }
2574: }
2575: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numPatchDofs, patchWithoutArtificialToWithArtificialArray, PETSC_OWN_POINTER, &patch->dofMappingWithoutToWithArtificial[p - pStart]));
2576: PetscCall(ISRestoreIndices(patch->gtol, >olArray));
2577: PetscCall(ISRestoreIndices(patch->gtolWithArtificial, >olArrayWithArtificial));
2578: }
2579: }
2580: for (p = pStart; p < pEnd; ++p) {
2581: if (isNonlinear) {
2582: const PetscInt *gtolArray, *gtolArrayWithAll = NULL;
2583: PetscInt numPatchDofs, offset;
2584: PetscInt numPatchDofsWithAll, offsetWithAll;
2585: PetscInt dofWithoutAllCounter = 0;
2586: PetscInt *patchWithoutAllToWithAllArray;
2588: /* Now build the mapping that for a dof in a patch WITHOUT dofs that have artificial bcs gives the */
2589: /* the index in the patch with all dofs */
2590: PetscCall(ISGetIndices(patch->gtol, >olArray));
2592: PetscCall(PetscSectionGetDof(patch->gtolCounts, p, &numPatchDofs));
2593: if (numPatchDofs == 0) {
2594: patch->dofMappingWithoutToWithAll[p - pStart] = NULL;
2595: continue;
2596: }
2598: PetscCall(PetscSectionGetOffset(patch->gtolCounts, p, &offset));
2599: PetscCall(ISGetIndices(patch->gtolWithAll, >olArrayWithAll));
2600: PetscCall(PetscSectionGetDof(patch->gtolCountsWithAll, p, &numPatchDofsWithAll));
2601: PetscCall(PetscSectionGetOffset(patch->gtolCountsWithAll, p, &offsetWithAll));
2603: PetscCall(PetscMalloc1(numPatchDofs, &patchWithoutAllToWithAllArray));
2605: for (i = 0; i < numPatchDofsWithAll; i++) {
2606: if (gtolArrayWithAll[i + offsetWithAll] == gtolArray[offset + dofWithoutAllCounter]) {
2607: patchWithoutAllToWithAllArray[dofWithoutAllCounter] = i;
2608: dofWithoutAllCounter++;
2609: if (dofWithoutAllCounter == numPatchDofs) break;
2610: }
2611: }
2612: PetscCall(ISCreateGeneral(PETSC_COMM_SELF, numPatchDofs, patchWithoutAllToWithAllArray, PETSC_OWN_POINTER, &patch->dofMappingWithoutToWithAll[p - pStart]));
2613: PetscCall(ISRestoreIndices(patch->gtol, >olArray));
2614: PetscCall(ISRestoreIndices(patch->gtolWithAll, >olArrayWithAll));
2615: }
2616: }
2617: if (patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) {
2618: PetscCall(VecCreateSeq(PETSC_COMM_SELF, maxDofWithArtificial, &patch->patchRHSWithArtificial));
2619: PetscCall(VecSetUp(patch->patchRHSWithArtificial));
2620: }
2621: PetscCall(VecCreateSeq(PETSC_COMM_SELF, maxDof, &patch->patchRHS));
2622: PetscCall(VecSetUp(patch->patchRHS));
2623: PetscCall(VecCreateSeq(PETSC_COMM_SELF, maxDof, &patch->patchUpdate));
2624: PetscCall(VecSetUp(patch->patchUpdate));
2625: if (patch->save_operators) {
2626: PetscCall(PetscMalloc1(patch->npatch, &patch->mat));
2627: for (i = 0; i < patch->npatch; ++i) PetscCall(PCPatchCreateMatrix_Private(pc, i, &patch->mat[i], PETSC_FALSE));
2628: }
2629: PetscCall(PetscLogEventEnd(PC_Patch_CreatePatches, pc, 0, 0, 0));
2631: /* If desired, calculate weights for dof multiplicity */
2632: if (patch->partition_of_unity) {
2633: PetscScalar *input = NULL;
2634: PetscScalar *output = NULL;
2635: Vec global;
2637: PetscCall(VecDuplicate(patch->localRHS, &patch->dof_weights));
2638: if (patch->local_composition_type == PC_COMPOSITE_ADDITIVE) {
2639: for (i = 0; i < patch->npatch; ++i) {
2640: PetscInt dof;
2642: PetscCall(PetscSectionGetDof(patch->gtolCounts, i + pStart, &dof));
2643: if (dof <= 0) continue;
2644: PetscCall(VecSet(patch->patchRHS, 1.0));
2645: PetscCall(PCPatch_ScatterLocal_Private(pc, i + pStart, patch->patchRHS, patch->dof_weights, ADD_VALUES, SCATTER_REVERSE, SCATTER_INTERIOR));
2646: }
2647: } else {
2648: /* multiplicative is actually only locally multiplicative and globally additive. need the pou where the mesh decomposition overlaps */
2649: PetscCall(VecSet(patch->dof_weights, 1.0));
2650: }
2652: PetscCall(VecDuplicate(patch->dof_weights, &global));
2653: PetscCall(VecSet(global, 0.));
2655: PetscCall(VecGetArray(patch->dof_weights, &input));
2656: PetscCall(VecGetArray(global, &output));
2657: PetscCall(PetscSFReduceBegin(patch->sectionSF, MPIU_SCALAR, input, output, MPI_SUM));
2658: PetscCall(PetscSFReduceEnd(patch->sectionSF, MPIU_SCALAR, input, output, MPI_SUM));
2659: PetscCall(VecRestoreArray(patch->dof_weights, &input));
2660: PetscCall(VecRestoreArray(global, &output));
2662: PetscCall(VecReciprocal(global));
2664: PetscCall(VecGetArray(patch->dof_weights, &output));
2665: PetscCall(VecGetArray(global, &input));
2666: PetscCall(PetscSFBcastBegin(patch->sectionSF, MPIU_SCALAR, input, output, MPI_REPLACE));
2667: PetscCall(PetscSFBcastEnd(patch->sectionSF, MPIU_SCALAR, input, output, MPI_REPLACE));
2668: PetscCall(VecRestoreArray(patch->dof_weights, &output));
2669: PetscCall(VecRestoreArray(global, &input));
2670: PetscCall(VecDestroy(&global));
2671: }
2672: if (patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE && patch->save_operators && !patch->isNonlinear) PetscCall(PetscMalloc1(patch->npatch, &patch->matWithArtificial));
2673: }
2674: PetscCall((*patch->setupsolver)(pc));
2675: PetscFunctionReturn(PETSC_SUCCESS);
2676: }
2678: static PetscErrorCode PCApply_PATCH_Linear(PC pc, PetscInt i, Vec x, Vec y)
2679: {
2680: PC_PATCH *patch = (PC_PATCH *)pc->data;
2681: KSP ksp;
2682: Mat op;
2683: PetscInt m, n;
2685: PetscFunctionBegin;
2686: if (patch->denseinverse) {
2687: PetscCall((*patch->densesolve)(patch->mat[i], x, y));
2688: PetscFunctionReturn(PETSC_SUCCESS);
2689: }
2690: ksp = (KSP)patch->solver[i];
2691: if (!patch->save_operators) {
2692: Mat mat;
2694: PetscCall(PCPatchCreateMatrix_Private(pc, i, &mat, PETSC_FALSE));
2695: /* Populate operator here. */
2696: PetscCall(PCPatchComputeOperator_Internal(pc, NULL, mat, i, PETSC_FALSE));
2697: PetscCall(KSPSetOperators(ksp, mat, mat));
2698: /* Drop reference so the KSPSetOperators below will blow it away. */
2699: PetscCall(MatDestroy(&mat));
2700: }
2701: PetscCall(PetscLogEventBegin(PC_Patch_Solve, pc, 0, 0, 0));
2702: if (!ksp->setfromoptionscalled) PetscCall(KSPSetFromOptions(ksp));
2703: /* Disgusting trick to reuse work vectors */
2704: PetscCall(KSPGetOperators(ksp, &op, NULL));
2705: PetscCall(MatGetLocalSize(op, &m, &n));
2706: x->map->n = m;
2707: y->map->n = n;
2708: x->map->N = m;
2709: y->map->N = n;
2710: PetscCall(KSPSolve(ksp, x, y));
2711: PetscCall(KSPCheckSolve(ksp, pc, y));
2712: PetscCall(PetscLogEventEnd(PC_Patch_Solve, pc, 0, 0, 0));
2713: if (!patch->save_operators) {
2714: PC pc;
2715: PetscCall(KSPSetOperators(ksp, NULL, NULL));
2716: PetscCall(KSPGetPC(ksp, &pc));
2717: /* Destroy PC context too, otherwise the factored matrix hangs around. */
2718: PetscCall(PCReset(pc));
2719: }
2720: PetscFunctionReturn(PETSC_SUCCESS);
2721: }
2723: static PetscErrorCode PCUpdateMultiplicative_PATCH_Linear(PC pc, PetscInt i, PetscInt pStart)
2724: {
2725: PC_PATCH *patch = (PC_PATCH *)pc->data;
2726: Mat multMat;
2727: PetscInt n, m;
2729: PetscFunctionBegin;
2730: if (patch->save_operators) {
2731: multMat = patch->matWithArtificial[i];
2732: } else {
2733: /*Very inefficient, hopefully we can just assemble the rectangular matrix in the first place.*/
2734: Mat matSquare;
2735: PetscInt dof;
2736: IS rowis;
2737: PetscCall(PCPatchCreateMatrix_Private(pc, i, &matSquare, PETSC_TRUE));
2738: PetscCall(PCPatchComputeOperator_Internal(pc, NULL, matSquare, i, PETSC_TRUE));
2739: PetscCall(MatGetSize(matSquare, &dof, NULL));
2740: PetscCall(ISCreateStride(PETSC_COMM_SELF, dof, 0, 1, &rowis));
2741: PetscCall(MatCreateSubMatrix(matSquare, rowis, patch->dofMappingWithoutToWithArtificial[i], MAT_INITIAL_MATRIX, &multMat));
2742: PetscCall(MatDestroy(&matSquare));
2743: PetscCall(ISDestroy(&rowis));
2744: }
2745: /* Disgusting trick to reuse work vectors */
2746: PetscCall(MatGetLocalSize(multMat, &m, &n));
2747: patch->patchUpdate->map->n = n;
2748: patch->patchRHSWithArtificial->map->n = m;
2749: patch->patchUpdate->map->N = n;
2750: patch->patchRHSWithArtificial->map->N = m;
2751: PetscCall(MatMult(multMat, patch->patchUpdate, patch->patchRHSWithArtificial));
2752: PetscCall(VecScale(patch->patchRHSWithArtificial, -1.0));
2753: PetscCall(PCPatch_ScatterLocal_Private(pc, i + pStart, patch->patchRHSWithArtificial, patch->localRHS, ADD_VALUES, SCATTER_REVERSE, SCATTER_WITHARTIFICIAL));
2754: if (!patch->save_operators) PetscCall(MatDestroy(&multMat));
2755: PetscFunctionReturn(PETSC_SUCCESS);
2756: }
2758: static PetscErrorCode PCApply_PATCH(PC pc, Vec x, Vec y)
2759: {
2760: PC_PATCH *patch = (PC_PATCH *)pc->data;
2761: const PetscScalar *globalRHS = NULL;
2762: PetscScalar *localRHS = NULL;
2763: PetscScalar *globalUpdate = NULL;
2764: const PetscInt *bcNodes = NULL;
2765: PetscInt nsweep = patch->symmetrise_sweep ? 2 : 1;
2766: PetscInt start[2] = {0, 0};
2767: PetscInt end[2] = {-1, -1};
2768: const PetscInt inc[2] = {1, -1};
2769: const PetscScalar *localUpdate;
2770: const PetscInt *iterationSet;
2771: PetscInt pStart, numBcs, n, sweep, bc, j;
2773: PetscFunctionBegin;
2774: PetscCall(PetscLogEventBegin(PC_Patch_Apply, pc, 0, 0, 0));
2775: PetscCall(PetscOptionsPushGetViewerOff(PETSC_TRUE));
2776: /* start, end, inc have 2 entries to manage a second backward sweep if we symmetrize */
2777: end[0] = patch->npatch;
2778: start[1] = patch->npatch - 1;
2779: if (patch->user_patches) {
2780: PetscCall(ISGetLocalSize(patch->iterationSet, &end[0]));
2781: start[1] = end[0] - 1;
2782: PetscCall(ISGetIndices(patch->iterationSet, &iterationSet));
2783: }
2784: /* Scatter from global space into overlapped local spaces */
2785: PetscCall(VecGetArrayRead(x, &globalRHS));
2786: PetscCall(VecGetArray(patch->localRHS, &localRHS));
2787: PetscCall(PetscSFBcastBegin(patch->sectionSF, MPIU_SCALAR, globalRHS, localRHS, MPI_REPLACE));
2788: PetscCall(PetscSFBcastEnd(patch->sectionSF, MPIU_SCALAR, globalRHS, localRHS, MPI_REPLACE));
2789: PetscCall(VecRestoreArrayRead(x, &globalRHS));
2790: PetscCall(VecRestoreArray(patch->localRHS, &localRHS));
2792: PetscCall(VecSet(patch->localUpdate, 0.0));
2793: PetscCall(PetscSectionGetChart(patch->gtolCounts, &pStart, NULL));
2794: PetscCall(PetscLogEventBegin(PC_Patch_Solve, pc, 0, 0, 0));
2795: for (sweep = 0; sweep < nsweep; sweep++) {
2796: for (j = start[sweep]; j * inc[sweep] < end[sweep] * inc[sweep]; j += inc[sweep]) {
2797: PetscInt i = patch->user_patches ? iterationSet[j] : j;
2798: PetscInt start, len;
2800: PetscCall(PetscSectionGetDof(patch->gtolCounts, i + pStart, &len));
2801: PetscCall(PetscSectionGetOffset(patch->gtolCounts, i + pStart, &start));
2802: /* TODO: Squash out these guys in the setup as well. */
2803: if (len <= 0) continue;
2804: /* TODO: Do we need different scatters for X and Y? */
2805: PetscCall(PCPatch_ScatterLocal_Private(pc, i + pStart, patch->localRHS, patch->patchRHS, INSERT_VALUES, SCATTER_FORWARD, SCATTER_INTERIOR));
2806: PetscCall((*patch->applysolver)(pc, i, patch->patchRHS, patch->patchUpdate));
2807: PetscCall(PCPatch_ScatterLocal_Private(pc, i + pStart, patch->patchUpdate, patch->localUpdate, ADD_VALUES, SCATTER_REVERSE, SCATTER_INTERIOR));
2808: if (patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) PetscCall((*patch->updatemultiplicative)(pc, i, pStart));
2809: }
2810: }
2811: PetscCall(PetscLogEventEnd(PC_Patch_Solve, pc, 0, 0, 0));
2812: if (patch->user_patches) PetscCall(ISRestoreIndices(patch->iterationSet, &iterationSet));
2813: /* XXX: should we do this on the global vector? */
2814: if (patch->partition_of_unity) PetscCall(VecPointwiseMult(patch->localUpdate, patch->localUpdate, patch->dof_weights));
2815: /* Now patch->localUpdate contains the solution of the patch solves, so we need to combine them all. */
2816: PetscCall(VecSet(y, 0.0));
2817: PetscCall(VecGetArray(y, &globalUpdate));
2818: PetscCall(VecGetArrayRead(patch->localUpdate, &localUpdate));
2819: PetscCall(PetscSFReduceBegin(patch->sectionSF, MPIU_SCALAR, localUpdate, globalUpdate, MPI_SUM));
2820: PetscCall(PetscSFReduceEnd(patch->sectionSF, MPIU_SCALAR, localUpdate, globalUpdate, MPI_SUM));
2821: PetscCall(VecRestoreArrayRead(patch->localUpdate, &localUpdate));
2823: /* Now we need to send the global BC values through */
2824: PetscCall(VecGetArrayRead(x, &globalRHS));
2825: PetscCall(ISGetSize(patch->globalBcNodes, &numBcs));
2826: PetscCall(ISGetIndices(patch->globalBcNodes, &bcNodes));
2827: PetscCall(VecGetLocalSize(x, &n));
2828: for (bc = 0; bc < numBcs; ++bc) {
2829: const PetscInt idx = bcNodes[bc];
2830: if (idx < n) globalUpdate[idx] = globalRHS[idx];
2831: }
2833: PetscCall(ISRestoreIndices(patch->globalBcNodes, &bcNodes));
2834: PetscCall(VecRestoreArrayRead(x, &globalRHS));
2835: PetscCall(VecRestoreArray(y, &globalUpdate));
2837: PetscCall(PetscOptionsPopGetViewerOff());
2838: PetscCall(PetscLogEventEnd(PC_Patch_Apply, pc, 0, 0, 0));
2839: PetscFunctionReturn(PETSC_SUCCESS);
2840: }
2842: static PetscErrorCode PCReset_PATCH_Linear(PC pc)
2843: {
2844: PC_PATCH *patch = (PC_PATCH *)pc->data;
2845: PetscInt i;
2847: PetscFunctionBegin;
2848: if (patch->solver) {
2849: for (i = 0; i < patch->npatch; ++i) PetscCall(KSPReset((KSP)patch->solver[i]));
2850: }
2851: PetscFunctionReturn(PETSC_SUCCESS);
2852: }
2854: static PetscErrorCode PCReset_PATCH(PC pc)
2855: {
2856: PC_PATCH *patch = (PC_PATCH *)pc->data;
2857: PetscInt i;
2859: PetscFunctionBegin;
2860: PetscCall(PetscSFDestroy(&patch->sectionSF));
2861: PetscCall(PetscSectionDestroy(&patch->cellCounts));
2862: PetscCall(PetscSectionDestroy(&patch->pointCounts));
2863: PetscCall(PetscSectionDestroy(&patch->cellNumbering));
2864: PetscCall(PetscSectionDestroy(&patch->gtolCounts));
2865: PetscCall(ISDestroy(&patch->gtol));
2866: PetscCall(ISDestroy(&patch->cells));
2867: PetscCall(ISDestroy(&patch->points));
2868: PetscCall(ISDestroy(&patch->dofs));
2869: PetscCall(ISDestroy(&patch->offs));
2870: PetscCall(PetscSectionDestroy(&patch->patchSection));
2871: PetscCall(ISDestroy(&patch->ghostBcNodes));
2872: PetscCall(ISDestroy(&patch->globalBcNodes));
2873: PetscCall(PetscSectionDestroy(&patch->gtolCountsWithArtificial));
2874: PetscCall(ISDestroy(&patch->gtolWithArtificial));
2875: PetscCall(ISDestroy(&patch->dofsWithArtificial));
2876: PetscCall(ISDestroy(&patch->offsWithArtificial));
2877: PetscCall(PetscSectionDestroy(&patch->gtolCountsWithAll));
2878: PetscCall(ISDestroy(&patch->gtolWithAll));
2879: PetscCall(ISDestroy(&patch->dofsWithAll));
2880: PetscCall(ISDestroy(&patch->offsWithAll));
2881: PetscCall(VecDestroy(&patch->cellMats));
2882: PetscCall(VecDestroy(&patch->intFacetMats));
2883: PetscCall(ISDestroy(&patch->allCells));
2884: PetscCall(ISDestroy(&patch->intFacets));
2885: PetscCall(ISDestroy(&patch->extFacets));
2886: PetscCall(ISDestroy(&patch->intFacetsToPatchCell));
2887: PetscCall(PetscSectionDestroy(&patch->intFacetCounts));
2888: PetscCall(PetscSectionDestroy(&patch->extFacetCounts));
2890: if (patch->dofSection)
2891: for (i = 0; i < patch->nsubspaces; i++) PetscCall(PetscSectionDestroy(&patch->dofSection[i]));
2892: PetscCall(PetscFree(patch->dofSection));
2893: PetscCall(PetscFree(patch->bs));
2894: PetscCall(PetscFree(patch->nodesPerCell));
2895: if (patch->cellNodeMap)
2896: for (i = 0; i < patch->nsubspaces; i++) PetscCall(PetscFree(patch->cellNodeMap[i]));
2897: PetscCall(PetscFree(patch->cellNodeMap));
2898: PetscCall(PetscFree(patch->subspaceOffsets));
2900: PetscCall((*patch->resetsolver)(pc));
2902: if (patch->subspaces_to_exclude) PetscCall(PetscHSetIDestroy(&patch->subspaces_to_exclude));
2904: PetscCall(VecDestroy(&patch->localRHS));
2905: PetscCall(VecDestroy(&patch->localUpdate));
2906: PetscCall(VecDestroy(&patch->patchRHS));
2907: PetscCall(VecDestroy(&patch->patchUpdate));
2908: PetscCall(VecDestroy(&patch->dof_weights));
2909: if (patch->patch_dof_weights) {
2910: for (i = 0; i < patch->npatch; ++i) PetscCall(VecDestroy(&patch->patch_dof_weights[i]));
2911: PetscCall(PetscFree(patch->patch_dof_weights));
2912: }
2913: if (patch->mat) {
2914: for (i = 0; i < patch->npatch; ++i) PetscCall(MatDestroy(&patch->mat[i]));
2915: PetscCall(PetscFree(patch->mat));
2916: }
2917: if (patch->matWithArtificial && !patch->isNonlinear) {
2918: for (i = 0; i < patch->npatch; ++i) PetscCall(MatDestroy(&patch->matWithArtificial[i]));
2919: PetscCall(PetscFree(patch->matWithArtificial));
2920: }
2921: PetscCall(VecDestroy(&patch->patchRHSWithArtificial));
2922: if (patch->dofMappingWithoutToWithArtificial) {
2923: for (i = 0; i < patch->npatch; ++i) PetscCall(ISDestroy(&patch->dofMappingWithoutToWithArtificial[i]));
2924: PetscCall(PetscFree(patch->dofMappingWithoutToWithArtificial));
2925: }
2926: if (patch->dofMappingWithoutToWithAll) {
2927: for (i = 0; i < patch->npatch; ++i) PetscCall(ISDestroy(&patch->dofMappingWithoutToWithAll[i]));
2928: PetscCall(PetscFree(patch->dofMappingWithoutToWithAll));
2929: }
2930: PetscCall(PetscFree(patch->sub_mat_type));
2931: if (patch->userIS) {
2932: for (i = 0; i < patch->npatch; ++i) PetscCall(ISDestroy(&patch->userIS[i]));
2933: PetscCall(PetscFree(patch->userIS));
2934: }
2935: PetscCall(PetscFree(patch->precomputedTensorLocations));
2936: PetscCall(PetscFree(patch->precomputedIntFacetTensorLocations));
2938: patch->bs = NULL;
2939: patch->cellNodeMap = NULL;
2940: patch->nsubspaces = 0;
2941: PetscCall(ISDestroy(&patch->iterationSet));
2943: PetscCall(PetscOptionsRestoreViewer(&patch->viewerCells));
2944: PetscCall(PetscOptionsRestoreViewer(&patch->viewerIntFacets));
2945: PetscCall(PetscOptionsRestoreViewer(&patch->viewerPoints));
2946: PetscCall(PetscOptionsRestoreViewer(&patch->viewerSection));
2947: PetscCall(PetscOptionsRestoreViewer(&patch->viewerMatrix));
2948: PetscFunctionReturn(PETSC_SUCCESS);
2949: }
2951: static PetscErrorCode PCDestroy_PATCH_Linear(PC pc)
2952: {
2953: PC_PATCH *patch = (PC_PATCH *)pc->data;
2954: PetscInt i;
2956: PetscFunctionBegin;
2957: if (patch->solver) {
2958: for (i = 0; i < patch->npatch; ++i) PetscCall(KSPDestroy((KSP *)&patch->solver[i]));
2959: PetscCall(PetscFree(patch->solver));
2960: }
2961: PetscFunctionReturn(PETSC_SUCCESS);
2962: }
2964: static PetscErrorCode PCDestroy_PATCH(PC pc)
2965: {
2966: PC_PATCH *patch = (PC_PATCH *)pc->data;
2968: PetscFunctionBegin;
2969: PetscCall(PCReset_PATCH(pc));
2970: PetscCall((*patch->destroysolver)(pc));
2971: PetscCall(PetscFree(pc->data));
2972: PetscFunctionReturn(PETSC_SUCCESS);
2973: }
2975: static PetscErrorCode PCSetFromOptions_PATCH(PC pc, PetscOptionItems *PetscOptionsObject)
2976: {
2977: PC_PATCH *patch = (PC_PATCH *)pc->data;
2978: PCPatchConstructType patchConstructionType = PC_PATCH_STAR;
2979: char sub_mat_type[PETSC_MAX_PATH_LEN];
2980: char option[PETSC_MAX_PATH_LEN];
2981: const char *prefix;
2982: PetscBool flg, dimflg, codimflg;
2983: MPI_Comm comm;
2984: PetscInt *ifields, nfields, k;
2985: PCCompositeType loctype = PC_COMPOSITE_ADDITIVE;
2987: PetscFunctionBegin;
2988: PetscCall(PetscObjectGetComm((PetscObject)pc, &comm));
2989: PetscCall(PetscObjectGetOptionsPrefix((PetscObject)pc, &prefix));
2990: PetscOptionsHeadBegin(PetscOptionsObject, "Patch solver options");
2992: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_save_operators", patch->classname));
2993: PetscCall(PetscOptionsBool(option, "Store all patch operators for lifetime of object?", "PCPatchSetSaveOperators", patch->save_operators, &patch->save_operators, &flg));
2995: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_precompute_element_tensors", patch->classname));
2996: PetscCall(PetscOptionsBool(option, "Compute each element tensor only once?", "PCPatchSetPrecomputeElementTensors", patch->precomputeElementTensors, &patch->precomputeElementTensors, &flg));
2997: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_partition_of_unity", patch->classname));
2998: PetscCall(PetscOptionsBool(option, "Weight contributions by dof multiplicity?", "PCPatchSetPartitionOfUnity", patch->partition_of_unity, &patch->partition_of_unity, &flg));
3000: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_local_type", patch->classname));
3001: PetscCall(PetscOptionsEnum(option, "Type of local solver composition (additive or multiplicative)", "PCPatchSetLocalComposition", PCCompositeTypes, (PetscEnum)loctype, (PetscEnum *)&loctype, &flg));
3002: if (flg) PetscCall(PCPatchSetLocalComposition(pc, loctype));
3003: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_dense_inverse", patch->classname));
3004: PetscCall(PetscOptionsBool(option, "Compute inverses of patch matrices and apply directly? Ignores KSP/PC settings on patch.", "PCPatchSetDenseInverse", patch->denseinverse, &patch->denseinverse, &flg));
3005: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_construct_dim", patch->classname));
3006: PetscCall(PetscOptionsInt(option, "What dimension of mesh point to construct patches by? (0 = vertices)", "PCPATCH", patch->dim, &patch->dim, &dimflg));
3007: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_construct_codim", patch->classname));
3008: PetscCall(PetscOptionsInt(option, "What co-dimension of mesh point to construct patches by? (0 = cells)", "PCPATCH", patch->codim, &patch->codim, &codimflg));
3009: PetscCheck(!dimflg || !codimflg, comm, PETSC_ERR_ARG_WRONG, "Can only set one of dimension or co-dimension");
3011: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_construct_type", patch->classname));
3012: PetscCall(PetscOptionsEnum(option, "How should the patches be constructed?", "PCPatchSetConstructType", PCPatchConstructTypes, (PetscEnum)patchConstructionType, (PetscEnum *)&patchConstructionType, &flg));
3013: if (flg) PetscCall(PCPatchSetConstructType(pc, patchConstructionType, NULL, NULL));
3015: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_vanka_dim", patch->classname));
3016: PetscCall(PetscOptionsInt(option, "Topological dimension of entities for Vanka to ignore", "PCPATCH", patch->vankadim, &patch->vankadim, &flg));
3018: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_ignore_dim", patch->classname));
3019: PetscCall(PetscOptionsInt(option, "Topological dimension of entities for completion to ignore", "PCPATCH", patch->ignoredim, &patch->ignoredim, &flg));
3021: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_pardecomp_overlap", patch->classname));
3022: PetscCall(PetscOptionsInt(option, "What overlap should we use in construct type pardecomp?", "PCPATCH", patch->pardecomp_overlap, &patch->pardecomp_overlap, &flg));
3024: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_sub_mat_type", patch->classname));
3025: PetscCall(PetscOptionsFList(option, "Matrix type for patch solves", "PCPatchSetSubMatType", MatList, NULL, sub_mat_type, PETSC_MAX_PATH_LEN, &flg));
3026: if (flg) PetscCall(PCPatchSetSubMatType(pc, sub_mat_type));
3028: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_symmetrise_sweep", patch->classname));
3029: PetscCall(PetscOptionsBool(option, "Go start->end, end->start?", "PCPATCH", patch->symmetrise_sweep, &patch->symmetrise_sweep, &flg));
3031: /* If the user has set the number of subspaces, use that for the buffer size,
3032: otherwise use a large number */
3033: if (patch->nsubspaces <= 0) {
3034: nfields = 128;
3035: } else {
3036: nfields = patch->nsubspaces;
3037: }
3038: PetscCall(PetscMalloc1(nfields, &ifields));
3039: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_exclude_subspaces", patch->classname));
3040: PetscCall(PetscOptionsGetIntArray(((PetscObject)pc)->options, ((PetscObject)pc)->prefix, option, ifields, &nfields, &flg));
3041: 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");
3042: if (flg) {
3043: PetscCall(PetscHSetIClear(patch->subspaces_to_exclude));
3044: for (k = 0; k < nfields; k++) PetscCall(PetscHSetIAdd(patch->subspaces_to_exclude, ifields[k]));
3045: }
3046: PetscCall(PetscFree(ifields));
3048: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_patches_view", patch->classname));
3049: PetscCall(PetscOptionsBool(option, "Print out information during patch construction", "PCPATCH", patch->viewPatches, &patch->viewPatches, &flg));
3050: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_cells_view", patch->classname));
3051: PetscCall(PetscOptionsGetViewer(comm, ((PetscObject)pc)->options, prefix, option, &patch->viewerCells, &patch->formatCells, &patch->viewCells));
3052: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_interior_facets_view", patch->classname));
3053: PetscCall(PetscOptionsGetViewer(comm, ((PetscObject)pc)->options, prefix, option, &patch->viewerIntFacets, &patch->formatIntFacets, &patch->viewIntFacets));
3054: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_exterior_facets_view", patch->classname));
3055: PetscCall(PetscOptionsGetViewer(comm, ((PetscObject)pc)->options, prefix, option, &patch->viewerExtFacets, &patch->formatExtFacets, &patch->viewExtFacets));
3056: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_points_view", patch->classname));
3057: PetscCall(PetscOptionsGetViewer(comm, ((PetscObject)pc)->options, prefix, option, &patch->viewerPoints, &patch->formatPoints, &patch->viewPoints));
3058: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_section_view", patch->classname));
3059: PetscCall(PetscOptionsGetViewer(comm, ((PetscObject)pc)->options, prefix, option, &patch->viewerSection, &patch->formatSection, &patch->viewSection));
3060: PetscCall(PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_mat_view", patch->classname));
3061: PetscCall(PetscOptionsGetViewer(comm, ((PetscObject)pc)->options, prefix, option, &patch->viewerMatrix, &patch->formatMatrix, &patch->viewMatrix));
3062: PetscOptionsHeadEnd();
3063: patch->optionsSet = PETSC_TRUE;
3064: PetscFunctionReturn(PETSC_SUCCESS);
3065: }
3067: static PetscErrorCode PCSetUpOnBlocks_PATCH(PC pc)
3068: {
3069: PC_PATCH *patch = (PC_PATCH *)pc->data;
3070: KSPConvergedReason reason;
3071: PetscInt i;
3073: PetscFunctionBegin;
3074: if (!patch->save_operators) {
3075: /* Can't do this here because the sub KSPs don't have an operator attached yet. */
3076: PetscFunctionReturn(PETSC_SUCCESS);
3077: }
3078: if (patch->denseinverse) {
3079: /* No solvers */
3080: PetscFunctionReturn(PETSC_SUCCESS);
3081: }
3082: for (i = 0; i < patch->npatch; ++i) {
3083: if (!((KSP)patch->solver[i])->setfromoptionscalled) PetscCall(KSPSetFromOptions((KSP)patch->solver[i]));
3084: PetscCall(KSPSetUp((KSP)patch->solver[i]));
3085: PetscCall(KSPGetConvergedReason((KSP)patch->solver[i], &reason));
3086: if (reason == KSP_DIVERGED_PC_FAILED) pc->failedreason = PC_SUBPC_ERROR;
3087: }
3088: PetscFunctionReturn(PETSC_SUCCESS);
3089: }
3091: static PetscErrorCode PCView_PATCH(PC pc, PetscViewer viewer)
3092: {
3093: PC_PATCH *patch = (PC_PATCH *)pc->data;
3094: PetscViewer sviewer;
3095: PetscBool isascii;
3096: PetscMPIInt rank;
3098: PetscFunctionBegin;
3099: /* TODO Redo tabbing with set tbas in new style */
3100: PetscCall(PetscObjectTypeCompare((PetscObject)viewer, PETSCVIEWERASCII, &isascii));
3101: if (!isascii) PetscFunctionReturn(PETSC_SUCCESS);
3102: PetscCallMPI(MPI_Comm_rank(PetscObjectComm((PetscObject)pc), &rank));
3103: PetscCall(PetscViewerASCIIPushTab(viewer));
3104: PetscCall(PetscViewerASCIIPrintf(viewer, "Subspace Correction preconditioner with %" PetscInt_FMT " patches\n", patch->npatch));
3105: if (patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) {
3106: PetscCall(PetscViewerASCIIPrintf(viewer, "Schwarz type: multiplicative\n"));
3107: } else {
3108: PetscCall(PetscViewerASCIIPrintf(viewer, "Schwarz type: additive\n"));
3109: }
3110: if (patch->partition_of_unity) PetscCall(PetscViewerASCIIPrintf(viewer, "Weighting by partition of unity\n"));
3111: else PetscCall(PetscViewerASCIIPrintf(viewer, "Not weighting by partition of unity\n"));
3112: if (patch->symmetrise_sweep) PetscCall(PetscViewerASCIIPrintf(viewer, "Symmetrising sweep (start->end, then end->start)\n"));
3113: else PetscCall(PetscViewerASCIIPrintf(viewer, "Not symmetrising sweep\n"));
3114: if (!patch->precomputeElementTensors) PetscCall(PetscViewerASCIIPrintf(viewer, "Not precomputing element tensors (overlapping cells rebuilt in every patch assembly)\n"));
3115: else PetscCall(PetscViewerASCIIPrintf(viewer, "Precomputing element tensors (each cell assembled only once)\n"));
3116: if (!patch->save_operators) PetscCall(PetscViewerASCIIPrintf(viewer, "Not saving patch operators (rebuilt every PCApply)\n"));
3117: else PetscCall(PetscViewerASCIIPrintf(viewer, "Saving patch operators (rebuilt every PCSetUp)\n"));
3118: if (patch->patchconstructop == PCPatchConstruct_Star) PetscCall(PetscViewerASCIIPrintf(viewer, "Patch construction operator: star\n"));
3119: else if (patch->patchconstructop == PCPatchConstruct_Vanka) PetscCall(PetscViewerASCIIPrintf(viewer, "Patch construction operator: Vanka\n"));
3120: else if (patch->patchconstructop == PCPatchConstruct_User) PetscCall(PetscViewerASCIIPrintf(viewer, "Patch construction operator: user-specified\n"));
3121: else PetscCall(PetscViewerASCIIPrintf(viewer, "Patch construction operator: unknown\n"));
3123: if (patch->denseinverse) {
3124: PetscCall(PetscViewerASCIIPrintf(viewer, "Explicitly forming dense inverse and applying patch solver via MatMult.\n"));
3125: } else {
3126: if (patch->isNonlinear) {
3127: PetscCall(PetscViewerASCIIPrintf(viewer, "SNES on patches (all same):\n"));
3128: } else {
3129: PetscCall(PetscViewerASCIIPrintf(viewer, "KSP on patches (all same):\n"));
3130: }
3131: if (patch->solver) {
3132: PetscCall(PetscViewerGetSubViewer(viewer, PETSC_COMM_SELF, &sviewer));
3133: if (rank == 0) {
3134: PetscCall(PetscViewerASCIIPushTab(sviewer));
3135: PetscCall(PetscObjectView(patch->solver[0], sviewer));
3136: PetscCall(PetscViewerASCIIPopTab(sviewer));
3137: }
3138: PetscCall(PetscViewerRestoreSubViewer(viewer, PETSC_COMM_SELF, &sviewer));
3139: } else {
3140: PetscCall(PetscViewerASCIIPushTab(viewer));
3141: PetscCall(PetscViewerASCIIPrintf(viewer, "Solver not yet set.\n"));
3142: PetscCall(PetscViewerASCIIPopTab(viewer));
3143: }
3144: }
3145: PetscCall(PetscViewerASCIIPopTab(viewer));
3146: PetscFunctionReturn(PETSC_SUCCESS);
3147: }
3149: /*MC
3150: PCPATCH - A `PC` object that encapsulates flexible definition of blocks for overlapping and non-overlapping
3151: small block additive preconditioners. Block definition is based on topology from
3152: a `DM` and equation numbering from a `PetscSection`.
3154: Options Database Keys:
3155: + -pc_patch_cells_view - Views the process local cell numbers for each patch
3156: . -pc_patch_points_view - Views the process local mesh point numbers for each patch
3157: . -pc_patch_g2l_view - Views the map between global dofs and patch local dofs for each patch
3158: . -pc_patch_patches_view - Views the global dofs associated with each patch and its boundary
3159: - -pc_patch_sub_mat_view - Views the matrix associated with each patch
3161: Level: intermediate
3163: .seealso: [](ch_ksp), `PCType`, `PCCreate()`, `PCSetType()`, `PCASM`, `PCJACOBI`, `PCPBJACOBI`, `PCVPBJACOBI`, `SNESPATCH`
3164: M*/
3165: PETSC_EXTERN PetscErrorCode PCCreate_Patch(PC pc)
3166: {
3167: PC_PATCH *patch;
3169: PetscFunctionBegin;
3170: PetscCall(PetscCitationsRegister(PCPatchCitation, &PCPatchcite));
3171: PetscCall(PetscNew(&patch));
3173: if (patch->subspaces_to_exclude) PetscCall(PetscHSetIDestroy(&patch->subspaces_to_exclude));
3174: PetscCall(PetscHSetICreate(&patch->subspaces_to_exclude));
3176: patch->classname = "pc";
3177: patch->isNonlinear = PETSC_FALSE;
3179: /* Set some defaults */
3180: patch->combined = PETSC_FALSE;
3181: patch->save_operators = PETSC_TRUE;
3182: patch->local_composition_type = PC_COMPOSITE_ADDITIVE;
3183: patch->precomputeElementTensors = PETSC_FALSE;
3184: patch->partition_of_unity = PETSC_FALSE;
3185: patch->codim = -1;
3186: patch->dim = -1;
3187: patch->vankadim = -1;
3188: patch->ignoredim = -1;
3189: patch->pardecomp_overlap = 0;
3190: patch->patchconstructop = PCPatchConstruct_Star;
3191: patch->symmetrise_sweep = PETSC_FALSE;
3192: patch->npatch = 0;
3193: patch->userIS = NULL;
3194: patch->optionsSet = PETSC_FALSE;
3195: patch->iterationSet = NULL;
3196: patch->user_patches = PETSC_FALSE;
3197: PetscCall(PetscStrallocpy(MATDENSE, (char **)&patch->sub_mat_type));
3198: patch->viewPatches = PETSC_FALSE;
3199: patch->viewCells = PETSC_FALSE;
3200: patch->viewPoints = PETSC_FALSE;
3201: patch->viewSection = PETSC_FALSE;
3202: patch->viewMatrix = PETSC_FALSE;
3203: patch->densesolve = NULL;
3204: patch->setupsolver = PCSetUp_PATCH_Linear;
3205: patch->applysolver = PCApply_PATCH_Linear;
3206: patch->resetsolver = PCReset_PATCH_Linear;
3207: patch->destroysolver = PCDestroy_PATCH_Linear;
3208: patch->updatemultiplicative = PCUpdateMultiplicative_PATCH_Linear;
3209: patch->dofMappingWithoutToWithArtificial = NULL;
3210: patch->dofMappingWithoutToWithAll = NULL;
3212: pc->data = (void *)patch;
3213: pc->ops->apply = PCApply_PATCH;
3214: pc->ops->applytranspose = NULL; /* PCApplyTranspose_PATCH; */
3215: pc->ops->setup = PCSetUp_PATCH;
3216: pc->ops->reset = PCReset_PATCH;
3217: pc->ops->destroy = PCDestroy_PATCH;
3218: pc->ops->setfromoptions = PCSetFromOptions_PATCH;
3219: pc->ops->setuponblocks = PCSetUpOnBlocks_PATCH;
3220: pc->ops->view = PCView_PATCH;
3221: pc->ops->applyrichardson = NULL;
3222: PetscFunctionReturn(PETSC_SUCCESS);
3223: }