1 #include <petsc/private/pcpatchimpl.h> /*I "petscpc.h" I*/ 2 #include <petsc/private/kspimpl.h> /* For ksp->setfromoptionscalled */ 3 #include <petsc/private/dmpleximpl.h> /* For DMPlexComputeJacobian_Patch_Internal() */ 4 #include <petscsf.h> 5 #include <petscbt.h> 6 #include <petscds.h> 7 8 PetscLogEvent PC_Patch_CreatePatches, PC_Patch_ComputeOp, PC_Patch_Solve, PC_Patch_Scatter, PC_Patch_Apply, PC_Patch_Prealloc; 9 10 PETSC_STATIC_INLINE PetscErrorCode ObjectView(PetscObject obj, PetscViewer viewer, PetscViewerFormat format) 11 { 12 PetscErrorCode ierr; 13 14 ierr = PetscViewerPushFormat(viewer, format);CHKERRQ(ierr); 15 ierr = PetscObjectView(obj, viewer);CHKERRQ(ierr); 16 ierr = PetscViewerPopFormat(viewer);CHKERRQ(ierr); 17 return(0); 18 } 19 20 static PetscErrorCode PCPatchConstruct_Star(void *vpatch, DM dm, PetscInt point, PetscHSetI ht) 21 { 22 PetscInt starSize; 23 PetscInt *star = NULL, si; 24 PetscErrorCode ierr; 25 26 PetscFunctionBegin; 27 PetscHSetIClear(ht); 28 /* To start with, add the point we care about */ 29 ierr = PetscHSetIAdd(ht, point);CHKERRQ(ierr); 30 /* Loop over all the points that this point connects to */ 31 ierr = DMPlexGetTransitiveClosure(dm, point, PETSC_FALSE, &starSize, &star);CHKERRQ(ierr); 32 for (si = 0; si < starSize*2; si += 2) {ierr = PetscHSetIAdd(ht, star[si]);CHKERRQ(ierr);} 33 ierr = DMPlexRestoreTransitiveClosure(dm, point, PETSC_FALSE, &starSize, &star);CHKERRQ(ierr); 34 PetscFunctionReturn(0); 35 } 36 37 static PetscErrorCode PCPatchConstruct_Vanka(void *vpatch, DM dm, PetscInt point, PetscHSetI ht) 38 { 39 PC_PATCH *patch = (PC_PATCH *) vpatch; 40 PetscInt starSize; 41 PetscInt *star = NULL; 42 PetscBool shouldIgnore = PETSC_FALSE; 43 PetscInt cStart, cEnd, iStart, iEnd, si; 44 PetscErrorCode ierr; 45 46 PetscFunctionBegin; 47 ierr = PetscHSetIClear(ht);CHKERRQ(ierr); 48 /* To start with, add the point we care about */ 49 ierr = PetscHSetIAdd(ht, point);CHKERRQ(ierr); 50 /* Should we ignore any points of a certain dimension? */ 51 if (patch->vankadim >= 0) { 52 shouldIgnore = PETSC_TRUE; 53 ierr = DMPlexGetDepthStratum(dm, patch->vankadim, &iStart, &iEnd);CHKERRQ(ierr); 54 } 55 ierr = DMPlexGetHeightStratum(dm, 0, &cStart, &cEnd);CHKERRQ(ierr); 56 /* Loop over all the cells that this point connects to */ 57 ierr = DMPlexGetTransitiveClosure(dm, point, PETSC_FALSE, &starSize, &star);CHKERRQ(ierr); 58 for (si = 0; si < starSize*2; si += 2) { 59 const PetscInt cell = star[si]; 60 PetscInt closureSize; 61 PetscInt *closure = NULL, ci; 62 63 if (cell < cStart || cell >= cEnd) continue; 64 /* now loop over all entities in the closure of that cell */ 65 ierr = DMPlexGetTransitiveClosure(dm, cell, PETSC_TRUE, &closureSize, &closure);CHKERRQ(ierr); 66 for (ci = 0; ci < closureSize*2; ci += 2) { 67 const PetscInt newpoint = closure[ci]; 68 69 /* We've been told to ignore entities of this type.*/ 70 if (shouldIgnore && newpoint >= iStart && newpoint < iEnd) continue; 71 ierr = PetscHSetIAdd(ht, newpoint);CHKERRQ(ierr); 72 } 73 ierr = DMPlexRestoreTransitiveClosure(dm, cell, PETSC_TRUE, &closureSize, &closure);CHKERRQ(ierr); 74 } 75 ierr = DMPlexRestoreTransitiveClosure(dm, point, PETSC_FALSE, &starSize, &star);CHKERRQ(ierr); 76 PetscFunctionReturn(0); 77 } 78 79 /* The user's already set the patches in patch->userIS. Build the hash tables */ 80 static PetscErrorCode PCPatchConstruct_User(void *vpatch, DM dm, PetscInt point, PetscHSetI ht) 81 { 82 PC_PATCH *patch = (PC_PATCH *) vpatch; 83 IS patchis = patch->userIS[point]; 84 PetscInt n; 85 const PetscInt *patchdata; 86 PetscInt pStart, pEnd, i; 87 PetscErrorCode ierr; 88 89 PetscFunctionBegin; 90 ierr = PetscHSetIClear(ht);CHKERRQ(ierr); 91 ierr = DMPlexGetChart(dm, &pStart, &pEnd);CHKERRQ(ierr); 92 ierr = ISGetLocalSize(patchis, &n);CHKERRQ(ierr); 93 ierr = ISGetIndices(patchis, &patchdata);CHKERRQ(ierr); 94 for (i = 0; i < n; ++i) { 95 const PetscInt ownedpoint = patchdata[i]; 96 97 if (ownedpoint < pStart || ownedpoint >= pEnd) { 98 SETERRQ3(PetscObjectComm((PetscObject) dm), PETSC_ERR_ARG_OUTOFRANGE, "Mesh point %D was not in [%D, %D)", ownedpoint, pStart, pEnd); 99 } 100 ierr = PetscHSetIAdd(ht, ownedpoint);CHKERRQ(ierr); 101 } 102 ierr = ISRestoreIndices(patchis, &patchdata);CHKERRQ(ierr); 103 PetscFunctionReturn(0); 104 } 105 106 static PetscErrorCode PCPatchCreateDefaultSF_Private(PC pc, PetscInt n, const PetscSF *sf, const PetscInt *bs) 107 { 108 PC_PATCH *patch = (PC_PATCH *) pc->data; 109 PetscInt i; 110 PetscErrorCode ierr; 111 112 PetscFunctionBegin; 113 if (n == 1 && bs[0] == 1) { 114 patch->defaultSF = sf[0]; 115 ierr = PetscObjectReference((PetscObject) patch->defaultSF);CHKERRQ(ierr); 116 } else { 117 PetscInt allRoots = 0, allLeaves = 0; 118 PetscInt leafOffset = 0; 119 PetscInt *ilocal = NULL; 120 PetscSFNode *iremote = NULL; 121 PetscInt *remoteOffsets = NULL; 122 PetscInt index = 0; 123 PetscHMapI rankToIndex; 124 PetscInt numRanks = 0; 125 PetscSFNode *remote = NULL; 126 PetscSF rankSF; 127 PetscInt *ranks = NULL; 128 PetscInt *offsets = NULL; 129 MPI_Datatype contig; 130 PetscHSetI ranksUniq; 131 132 /* First figure out how many dofs there are in the concatenated numbering. 133 * allRoots: number of owned global dofs; 134 * allLeaves: number of visible dofs (global + ghosted). 135 */ 136 for (i = 0; i < n; ++i) { 137 PetscInt nroots, nleaves; 138 139 ierr = PetscSFGetGraph(sf[i], &nroots, &nleaves, NULL, NULL);CHKERRQ(ierr); 140 allRoots += nroots * bs[i]; 141 allLeaves += nleaves * bs[i]; 142 } 143 ierr = PetscMalloc1(allLeaves, &ilocal);CHKERRQ(ierr); 144 ierr = PetscMalloc1(allLeaves, &iremote);CHKERRQ(ierr); 145 /* Now build an SF that just contains process connectivity. */ 146 ierr = PetscHSetICreate(&ranksUniq);CHKERRQ(ierr); 147 for (i = 0; i < n; ++i) { 148 const PetscMPIInt *ranks = NULL; 149 PetscInt nranks, j; 150 151 ierr = PetscSFSetUp(sf[i]);CHKERRQ(ierr); 152 ierr = PetscSFGetRanks(sf[i], &nranks, &ranks, NULL, NULL, NULL);CHKERRQ(ierr); 153 /* These are all the ranks who communicate with me. */ 154 for (j = 0; j < nranks; ++j) { 155 ierr = PetscHSetIAdd(ranksUniq, (PetscInt) ranks[j]);CHKERRQ(ierr); 156 } 157 } 158 ierr = PetscHSetIGetSize(ranksUniq, &numRanks);CHKERRQ(ierr); 159 ierr = PetscMalloc1(numRanks, &remote);CHKERRQ(ierr); 160 ierr = PetscMalloc1(numRanks, &ranks);CHKERRQ(ierr); 161 ierr = PetscHSetIGetElems(ranksUniq, &index, ranks);CHKERRQ(ierr); 162 163 ierr = PetscHMapICreate(&rankToIndex);CHKERRQ(ierr); 164 for (i = 0; i < numRanks; ++i) { 165 remote[i].rank = ranks[i]; 166 remote[i].index = 0; 167 ierr = PetscHMapISet(rankToIndex, ranks[i], i);CHKERRQ(ierr); 168 } 169 ierr = PetscFree(ranks);CHKERRQ(ierr); 170 ierr = PetscHSetIDestroy(&ranksUniq);CHKERRQ(ierr); 171 ierr = PetscSFCreate(PetscObjectComm((PetscObject) pc), &rankSF);CHKERRQ(ierr); 172 ierr = PetscSFSetGraph(rankSF, 1, numRanks, NULL, PETSC_OWN_POINTER, remote, PETSC_OWN_POINTER);CHKERRQ(ierr); 173 ierr = PetscSFSetUp(rankSF);CHKERRQ(ierr); 174 /* OK, use it to communicate the root offset on the remote 175 * processes for each subspace. */ 176 ierr = PetscMalloc1(n, &offsets);CHKERRQ(ierr); 177 ierr = PetscMalloc1(n*numRanks, &remoteOffsets);CHKERRQ(ierr); 178 179 offsets[0] = 0; 180 for (i = 1; i < n; ++i) { 181 PetscInt nroots; 182 183 ierr = PetscSFGetGraph(sf[i-1], &nroots, NULL, NULL, NULL);CHKERRQ(ierr); 184 offsets[i] = offsets[i-1] + nroots*bs[i-1]; 185 } 186 /* Offsets are the offsets on the current process of the 187 * global dof numbering for the subspaces. */ 188 ierr = MPI_Type_contiguous(n, MPIU_INT, &contig);CHKERRQ(ierr); 189 ierr = MPI_Type_commit(&contig);CHKERRQ(ierr); 190 191 ierr = PetscSFBcastBegin(rankSF, contig, offsets, remoteOffsets);CHKERRQ(ierr); 192 ierr = PetscSFBcastEnd(rankSF, contig, offsets, remoteOffsets);CHKERRQ(ierr); 193 ierr = MPI_Type_free(&contig);CHKERRQ(ierr); 194 ierr = PetscFree(offsets);CHKERRQ(ierr); 195 ierr = PetscSFDestroy(&rankSF);CHKERRQ(ierr); 196 /* Now remoteOffsets contains the offsets on the remote 197 * processes who communicate with me. So now we can 198 * concatenate the list of SFs into a single one. */ 199 index = 0; 200 for (i = 0; i < n; ++i) { 201 const PetscSFNode *remote = NULL; 202 const PetscInt *local = NULL; 203 PetscInt nroots, nleaves, j; 204 205 ierr = PetscSFGetGraph(sf[i], &nroots, &nleaves, &local, &remote);CHKERRQ(ierr); 206 for (j = 0; j < nleaves; ++j) { 207 PetscInt rank = remote[j].rank; 208 PetscInt idx, rootOffset, k; 209 210 ierr = PetscHMapIGet(rankToIndex, rank, &idx);CHKERRQ(ierr); 211 if (idx == -1) SETERRQ(PETSC_COMM_SELF, PETSC_ERR_ARG_WRONGSTATE, "Didn't find rank, huh?"); 212 /* Offset on given rank for ith subspace */ 213 rootOffset = remoteOffsets[n*idx + i]; 214 for (k = 0; k < bs[i]; ++k) { 215 ilocal[index] = (local ? local[j] : j)*bs[i] + k + leafOffset; 216 iremote[index].rank = remote[j].rank; 217 iremote[index].index = remote[j].index*bs[i] + k + rootOffset; 218 ++index; 219 } 220 } 221 leafOffset += nleaves * bs[i]; 222 } 223 ierr = PetscHMapIDestroy(&rankToIndex);CHKERRQ(ierr); 224 ierr = PetscFree(remoteOffsets);CHKERRQ(ierr); 225 ierr = PetscSFCreate(PetscObjectComm((PetscObject)pc), &patch->defaultSF);CHKERRQ(ierr); 226 ierr = PetscSFSetGraph(patch->defaultSF, allRoots, allLeaves, ilocal, PETSC_OWN_POINTER, iremote, PETSC_OWN_POINTER);CHKERRQ(ierr); 227 } 228 PetscFunctionReturn(0); 229 } 230 231 /* TODO: Docs */ 232 PetscErrorCode PCPatchSetIgnoreDim(PC pc, PetscInt dim) 233 { 234 PC_PATCH *patch = (PC_PATCH *) pc->data; 235 PetscFunctionBegin; 236 patch->ignoredim = dim; 237 PetscFunctionReturn(0); 238 } 239 240 /* TODO: Docs */ 241 PetscErrorCode PCPatchGetIgnoreDim(PC pc, PetscInt *dim) 242 { 243 PC_PATCH *patch = (PC_PATCH *) pc->data; 244 PetscFunctionBegin; 245 *dim = patch->ignoredim; 246 PetscFunctionReturn(0); 247 } 248 249 /* TODO: Docs */ 250 PetscErrorCode PCPatchSetSaveOperators(PC pc, PetscBool flg) 251 { 252 PC_PATCH *patch = (PC_PATCH *) pc->data; 253 PetscFunctionBegin; 254 patch->save_operators = flg; 255 PetscFunctionReturn(0); 256 } 257 258 /* TODO: Docs */ 259 PetscErrorCode PCPatchGetSaveOperators(PC pc, PetscBool *flg) 260 { 261 PC_PATCH *patch = (PC_PATCH *) pc->data; 262 PetscFunctionBegin; 263 *flg = patch->save_operators; 264 PetscFunctionReturn(0); 265 } 266 267 /* TODO: Docs */ 268 PetscErrorCode PCPatchSetPartitionOfUnity(PC pc, PetscBool flg) 269 { 270 PC_PATCH *patch = (PC_PATCH *) pc->data; 271 PetscFunctionBegin; 272 patch->partition_of_unity = flg; 273 PetscFunctionReturn(0); 274 } 275 276 /* TODO: Docs */ 277 PetscErrorCode PCPatchGetPartitionOfUnity(PC pc, PetscBool *flg) 278 { 279 PC_PATCH *patch = (PC_PATCH *) pc->data; 280 PetscFunctionBegin; 281 *flg = patch->partition_of_unity; 282 PetscFunctionReturn(0); 283 } 284 285 /* TODO: Docs */ 286 PetscErrorCode PCPatchSetLocalComposition(PC pc, PCCompositeType type) 287 { 288 PC_PATCH *patch = (PC_PATCH *) pc->data; 289 PetscFunctionBegin; 290 if (type != PC_COMPOSITE_ADDITIVE && type != PC_COMPOSITE_MULTIPLICATIVE) SETERRQ(PetscObjectComm((PetscObject)pc),PETSC_ERR_SUP,"Only supports additive or multiplicative as the local type"); 291 patch->local_composition_type = type; 292 PetscFunctionReturn(0); 293 } 294 295 /* TODO: Docs */ 296 PetscErrorCode PCPatchGetLocalComposition(PC pc, PCCompositeType *type) 297 { 298 PC_PATCH *patch = (PC_PATCH *) pc->data; 299 PetscFunctionBegin; 300 *type = patch->local_composition_type; 301 PetscFunctionReturn(0); 302 } 303 304 /* TODO: Docs */ 305 PetscErrorCode PCPatchSetSubMatType(PC pc, MatType sub_mat_type) 306 { 307 PC_PATCH *patch = (PC_PATCH *) pc->data; 308 PetscErrorCode ierr; 309 310 PetscFunctionBegin; 311 if (patch->sub_mat_type) {ierr = PetscFree(patch->sub_mat_type);CHKERRQ(ierr);} 312 ierr = PetscStrallocpy(sub_mat_type, (char **) &patch->sub_mat_type);CHKERRQ(ierr); 313 PetscFunctionReturn(0); 314 } 315 316 /* TODO: Docs */ 317 PetscErrorCode PCPatchGetSubMatType(PC pc, MatType *sub_mat_type) 318 { 319 PC_PATCH *patch = (PC_PATCH *) pc->data; 320 PetscFunctionBegin; 321 *sub_mat_type = patch->sub_mat_type; 322 PetscFunctionReturn(0); 323 } 324 325 /* TODO: Docs */ 326 PetscErrorCode PCPatchSetCellNumbering(PC pc, PetscSection cellNumbering) 327 { 328 PC_PATCH *patch = (PC_PATCH *) pc->data; 329 PetscErrorCode ierr; 330 331 PetscFunctionBegin; 332 patch->cellNumbering = cellNumbering; 333 ierr = PetscObjectReference((PetscObject) cellNumbering);CHKERRQ(ierr); 334 PetscFunctionReturn(0); 335 } 336 337 /* TODO: Docs */ 338 PetscErrorCode PCPatchGetCellNumbering(PC pc, PetscSection *cellNumbering) 339 { 340 PC_PATCH *patch = (PC_PATCH *) pc->data; 341 PetscFunctionBegin; 342 *cellNumbering = patch->cellNumbering; 343 PetscFunctionReturn(0); 344 } 345 346 /* TODO: Docs */ 347 PetscErrorCode PCPatchSetConstructType(PC pc, PCPatchConstructType ctype, PetscErrorCode (*func)(PC, PetscInt *, IS **, IS *, void *), void *ctx) 348 { 349 PC_PATCH *patch = (PC_PATCH *) pc->data; 350 351 PetscFunctionBegin; 352 patch->ctype = ctype; 353 switch (ctype) { 354 case PC_PATCH_STAR: 355 patch->user_patches = PETSC_FALSE; 356 patch->patchconstructop = PCPatchConstruct_Star; 357 break; 358 case PC_PATCH_VANKA: 359 patch->user_patches = PETSC_FALSE; 360 patch->patchconstructop = PCPatchConstruct_Vanka; 361 break; 362 case PC_PATCH_USER: 363 case PC_PATCH_PYTHON: 364 patch->user_patches = PETSC_TRUE; 365 patch->patchconstructop = PCPatchConstruct_User; 366 if (func) { 367 patch->userpatchconstructionop = func; 368 patch->userpatchconstructctx = ctx; 369 } 370 break; 371 default: 372 SETERRQ1(PetscObjectComm((PetscObject) pc), PETSC_ERR_USER, "Unknown patch construction type %D", (PetscInt) patch->ctype); 373 } 374 PetscFunctionReturn(0); 375 } 376 377 /* TODO: Docs */ 378 PetscErrorCode PCPatchGetConstructType(PC pc, PCPatchConstructType *ctype, PetscErrorCode (**func)(PC, PetscInt *, IS **, IS *, void *), void **ctx) 379 { 380 PC_PATCH *patch = (PC_PATCH *) pc->data; 381 382 PetscFunctionBegin; 383 *ctype = patch->ctype; 384 switch (patch->ctype) { 385 case PC_PATCH_STAR: 386 case PC_PATCH_VANKA: 387 break; 388 case PC_PATCH_USER: 389 case PC_PATCH_PYTHON: 390 *func = patch->userpatchconstructionop; 391 *ctx = patch->userpatchconstructctx; 392 break; 393 default: 394 SETERRQ1(PetscObjectComm((PetscObject) pc), PETSC_ERR_USER, "Unknown patch construction type %D", (PetscInt) patch->ctype); 395 } 396 PetscFunctionReturn(0); 397 } 398 399 /* TODO: Docs */ 400 PetscErrorCode PCPatchSetDiscretisationInfo(PC pc, PetscInt nsubspaces, DM *dms, PetscInt *bs, PetscInt *nodesPerCell, const PetscInt **cellNodeMap, 401 const PetscInt *subspaceOffsets, PetscInt numGhostBcs, const PetscInt *ghostBcNodes, PetscInt numGlobalBcs, const PetscInt *globalBcNodes) 402 { 403 PC_PATCH *patch = (PC_PATCH *) pc->data; 404 DM dm; 405 PetscSF *sfs; 406 PetscInt cStart, cEnd, i, j; 407 PetscErrorCode ierr; 408 409 PetscFunctionBegin; 410 ierr = PCGetDM(pc, &dm);CHKERRQ(ierr); 411 ierr = DMPlexGetHeightStratum(dm, 0, &cStart, &cEnd);CHKERRQ(ierr); 412 ierr = PetscMalloc1(nsubspaces, &sfs);CHKERRQ(ierr); 413 ierr = PetscMalloc1(nsubspaces, &patch->dofSection);CHKERRQ(ierr); 414 ierr = PetscMalloc1(nsubspaces, &patch->bs);CHKERRQ(ierr); 415 ierr = PetscMalloc1(nsubspaces, &patch->nodesPerCell);CHKERRQ(ierr); 416 ierr = PetscMalloc1(nsubspaces, &patch->cellNodeMap);CHKERRQ(ierr); 417 ierr = PetscMalloc1(nsubspaces+1, &patch->subspaceOffsets);CHKERRQ(ierr); 418 419 patch->nsubspaces = nsubspaces; 420 patch->totalDofsPerCell = 0; 421 for (i = 0; i < nsubspaces; ++i) { 422 ierr = DMGetDefaultSection(dms[i], &patch->dofSection[i]);CHKERRQ(ierr); 423 ierr = PetscObjectReference((PetscObject) patch->dofSection[i]);CHKERRQ(ierr); 424 ierr = DMGetDefaultSF(dms[i], &sfs[i]);CHKERRQ(ierr); 425 patch->bs[i] = bs[i]; 426 patch->nodesPerCell[i] = nodesPerCell[i]; 427 patch->totalDofsPerCell += nodesPerCell[i]*bs[i]; 428 ierr = PetscMalloc1((cEnd-cStart)*nodesPerCell[i], &patch->cellNodeMap[i]);CHKERRQ(ierr); 429 for (j = 0; j < (cEnd-cStart)*nodesPerCell[i]; ++j) patch->cellNodeMap[i][j] = cellNodeMap[i][j]; 430 patch->subspaceOffsets[i] = subspaceOffsets[i]; 431 } 432 ierr = PCPatchCreateDefaultSF_Private(pc, nsubspaces, sfs, patch->bs);CHKERRQ(ierr); 433 ierr = PetscFree(sfs);CHKERRQ(ierr); 434 435 patch->subspaceOffsets[nsubspaces] = subspaceOffsets[nsubspaces]; 436 ierr = ISCreateGeneral(PETSC_COMM_SELF, numGhostBcs, ghostBcNodes, PETSC_COPY_VALUES, &patch->ghostBcNodes);CHKERRQ(ierr); 437 ierr = ISCreateGeneral(PETSC_COMM_SELF, numGlobalBcs, globalBcNodes, PETSC_COPY_VALUES, &patch->globalBcNodes);CHKERRQ(ierr); 438 PetscFunctionReturn(0); 439 } 440 441 /* TODO: Docs */ 442 PetscErrorCode PCPatchSetDiscretisationInfoCombined(PC pc, DM dm, PetscInt *nodesPerCell, const PetscInt **cellNodeMap, PetscInt numGhostBcs, const PetscInt *ghostBcNodes, PetscInt numGlobalBcs, const PetscInt *globalBcNodes) 443 { 444 PC_PATCH *patch = (PC_PATCH *) pc->data; 445 PetscInt cStart, cEnd, i, j; 446 PetscErrorCode ierr; 447 448 PetscFunctionBegin; 449 patch->combined = PETSC_TRUE; 450 ierr = DMPlexGetHeightStratum(dm, 0, &cStart, &cEnd);CHKERRQ(ierr); 451 ierr = DMGetNumFields(dm, &patch->nsubspaces);CHKERRQ(ierr); 452 ierr = PetscCalloc1(patch->nsubspaces, &patch->dofSection);CHKERRQ(ierr); 453 ierr = PetscMalloc1(patch->nsubspaces, &patch->bs);CHKERRQ(ierr); 454 ierr = PetscMalloc1(patch->nsubspaces, &patch->nodesPerCell);CHKERRQ(ierr); 455 ierr = PetscMalloc1(patch->nsubspaces, &patch->cellNodeMap);CHKERRQ(ierr); 456 ierr = PetscCalloc1(patch->nsubspaces+1, &patch->subspaceOffsets);CHKERRQ(ierr); 457 ierr = DMGetDefaultSection(dm, &patch->dofSection[0]);CHKERRQ(ierr); 458 ierr = PetscObjectReference((PetscObject) patch->dofSection[0]);CHKERRQ(ierr); 459 ierr = PetscSectionGetStorageSize(patch->dofSection[0], &patch->subspaceOffsets[patch->nsubspaces]);CHKERRQ(ierr); 460 patch->totalDofsPerCell = 0; 461 for (i = 0; i < patch->nsubspaces; ++i) { 462 patch->bs[i] = 1; 463 patch->nodesPerCell[i] = nodesPerCell[i]; 464 patch->totalDofsPerCell += nodesPerCell[i]; 465 ierr = PetscMalloc1((cEnd-cStart)*nodesPerCell[i], &patch->cellNodeMap[i]);CHKERRQ(ierr); 466 for (j = 0; j < (cEnd-cStart)*nodesPerCell[i]; ++j) patch->cellNodeMap[i][j] = cellNodeMap[i][j]; 467 } 468 ierr = DMGetDefaultSF(dm, &patch->defaultSF);CHKERRQ(ierr); 469 ierr = PetscObjectReference((PetscObject) patch->defaultSF);CHKERRQ(ierr); 470 ierr = ISCreateGeneral(PETSC_COMM_SELF, numGhostBcs, ghostBcNodes, PETSC_COPY_VALUES, &patch->ghostBcNodes);CHKERRQ(ierr); 471 ierr = ISCreateGeneral(PETSC_COMM_SELF, numGlobalBcs, globalBcNodes, PETSC_COPY_VALUES, &patch->globalBcNodes);CHKERRQ(ierr); 472 PetscFunctionReturn(0); 473 } 474 475 /*@C 476 477 PCPatchSetComputeFunction - Set the callback used to compute patch residuals 478 479 Input Parameters: 480 + pc - The PC 481 . func - The callback 482 - ctx - The user context 483 484 Level: advanced 485 486 Note: 487 The callback has signature: 488 + usercomputef(pc, point, x, f, cellIS, n, u, ctx) 489 + pc - The PC 490 + point - The point 491 + x - The input solution (not used in linear problems) 492 + f - The patch residual vector 493 + cellIS - An array of the cell numbers 494 + n - The size of g2l 495 + g2l - The global to local dof translation table 496 + ctx - The user context 497 and can assume that the matrix entries have been set to zero before the call. 498 499 .seealso: PCPatchSetComputeOperator(), PCPatchGetComputeOperator(), PCPatchSetDiscretisationInfo() 500 @*/ 501 PetscErrorCode PCPatchSetComputeFunction(PC pc, PetscErrorCode (*func)(PC, PetscInt, Vec, Vec, IS, PetscInt, const PetscInt *, void *), void *ctx) 502 { 503 PC_PATCH *patch = (PC_PATCH *) pc->data; 504 505 PetscFunctionBegin; 506 patch->usercomputef = func; 507 patch->usercomputefctx = ctx; 508 PetscFunctionReturn(0); 509 } 510 511 /*@C 512 513 PCPatchSetComputeOperator - Set the callback used to compute patch matrices 514 515 Input Parameters: 516 + pc - The PC 517 . func - The callback 518 - ctx - The user context 519 520 Level: advanced 521 522 Note: 523 The callback has signature: 524 + usercomputeop(pc, point, x, mat, cellIS, n, u, ctx) 525 + pc - The PC 526 + point - The point 527 + x - The input solution (not used in linear problems) 528 + mat - The patch matrix 529 + cellIS - An array of the cell numbers 530 + n - The size of g2l 531 + g2l - The global to local dof translation table 532 + ctx - The user context 533 and can assume that the matrix entries have been set to zero before the call. 534 535 .seealso: PCPatchGetComputeOperator(), PCPatchSetComputeFunction(), PCPatchSetDiscretisationInfo() 536 @*/ 537 PetscErrorCode PCPatchSetComputeOperator(PC pc, PetscErrorCode (*func)(PC, PetscInt, Vec, Mat, IS, PetscInt, const PetscInt *, void *), void *ctx) 538 { 539 PC_PATCH *patch = (PC_PATCH *) pc->data; 540 541 PetscFunctionBegin; 542 patch->usercomputeop = func; 543 patch->usercomputeopctx = ctx; 544 PetscFunctionReturn(0); 545 } 546 547 /* On entry, ht contains the topological entities whose dofs we are responsible for solving for; 548 on exit, cht contains all the topological entities we need to compute their residuals. 549 In full generality this should incorporate knowledge of the sparsity pattern of the matrix; 550 here we assume a standard FE sparsity pattern.*/ 551 /* TODO: Use DMPlexGetAdjacency() */ 552 static PetscErrorCode PCPatchCompleteCellPatch(PC pc, PetscHSetI ht, PetscHSetI cht) 553 { 554 DM dm; 555 PetscHashIter hi; 556 PetscInt point; 557 PetscInt *star = NULL, *closure = NULL; 558 PetscInt ignoredim, iStart = 0, iEnd = -1, starSize, closureSize, si, ci; 559 PetscErrorCode ierr; 560 561 PetscFunctionBegin; 562 ierr = PCGetDM(pc, &dm);CHKERRQ(ierr); 563 ierr = PCPatchGetIgnoreDim(pc, &ignoredim);CHKERRQ(ierr); 564 if (ignoredim >= 0) {ierr = DMPlexGetDepthStratum(dm, ignoredim, &iStart, &iEnd);CHKERRQ(ierr);} 565 ierr = PetscHSetIClear(cht);CHKERRQ(ierr); 566 PetscHashIterBegin(ht, hi); 567 while (!PetscHashIterAtEnd(ht, hi)) { 568 569 PetscHashIterGetKey(ht, hi, point); 570 PetscHashIterNext(ht, hi); 571 572 /* Loop over all the cells that this point connects to */ 573 ierr = DMPlexGetTransitiveClosure(dm, point, PETSC_FALSE, &starSize, &star);CHKERRQ(ierr); 574 for (si = 0; si < starSize*2; si += 2) { 575 const PetscInt ownedpoint = star[si]; 576 /* TODO Check for point in cht before running through closure again */ 577 /* now loop over all entities in the closure of that cell */ 578 ierr = DMPlexGetTransitiveClosure(dm, ownedpoint, PETSC_TRUE, &closureSize, &closure);CHKERRQ(ierr); 579 for (ci = 0; ci < closureSize*2; ci += 2) { 580 const PetscInt seenpoint = closure[ci]; 581 if (ignoredim >= 0 && seenpoint >= iStart && seenpoint < iEnd) continue; 582 ierr = PetscHSetIAdd(cht, seenpoint);CHKERRQ(ierr); 583 } 584 } 585 } 586 ierr = DMPlexRestoreTransitiveClosure(dm, 0, PETSC_TRUE, NULL, &closure);CHKERRQ(ierr); 587 ierr = DMPlexRestoreTransitiveClosure(dm, 0, PETSC_FALSE, NULL, &star);CHKERRQ(ierr); 588 PetscFunctionReturn(0); 589 } 590 591 static PetscErrorCode PCPatchGetGlobalDofs(PC pc, PetscSection dofSection[], PetscInt f, PetscBool combined, PetscInt p, PetscInt *dof, PetscInt *off) 592 { 593 PetscErrorCode ierr; 594 595 PetscFunctionBegin; 596 if (combined) { 597 if (f < 0) { 598 if (dof) {ierr = PetscSectionGetDof(dofSection[0], p, dof);CHKERRQ(ierr);} 599 if (off) {ierr = PetscSectionGetOffset(dofSection[0], p, off);CHKERRQ(ierr);} 600 } else { 601 if (dof) {ierr = PetscSectionGetFieldDof(dofSection[0], p, f, dof);CHKERRQ(ierr);} 602 if (off) {ierr = PetscSectionGetFieldOffset(dofSection[0], p, f, off);CHKERRQ(ierr);} 603 } 604 } else { 605 if (f < 0) { 606 PC_PATCH *patch = (PC_PATCH *) pc->data; 607 PetscInt fdof, g; 608 609 if (dof) { 610 *dof = 0; 611 for (g = 0; g < patch->nsubspaces; ++g) { 612 ierr = PetscSectionGetDof(dofSection[g], p, &fdof);CHKERRQ(ierr); 613 *dof += fdof; 614 } 615 } 616 if (off) { 617 *off = 0; 618 for (g = 0; g < patch->nsubspaces; ++g) { 619 ierr = PetscSectionGetOffset(dofSection[g], p, &fdof);CHKERRQ(ierr); 620 *off += fdof; 621 } 622 } 623 } else { 624 if (dof) {ierr = PetscSectionGetDof(dofSection[f], p, dof);CHKERRQ(ierr);} 625 if (off) {ierr = PetscSectionGetOffset(dofSection[f], p, off);CHKERRQ(ierr);} 626 } 627 } 628 PetscFunctionReturn(0); 629 } 630 631 /* Given a hash table with a set of topological entities (pts), compute the degrees of 632 freedom in global concatenated numbering on those entities. 633 For Vanka smoothing, this needs to do something special: ignore dofs of the 634 constraint subspace on entities that aren't the base entity we're building the patch 635 around. */ 636 static PetscErrorCode PCPatchGetPointDofs(PC pc, PetscHSetI pts, PetscHSetI dofs, PetscInt base, PetscHSetI* subspaces_to_exclude) 637 { 638 PC_PATCH *patch = (PC_PATCH *) pc->data; 639 PetscHashIter hi; 640 PetscInt ldof, loff; 641 PetscInt k, p; 642 PetscErrorCode ierr; 643 644 PetscFunctionBegin; 645 ierr = PetscHSetIClear(dofs);CHKERRQ(ierr); 646 for (k = 0; k < patch->nsubspaces; ++k) { 647 PetscInt subspaceOffset = patch->subspaceOffsets[k]; 648 PetscInt bs = patch->bs[k]; 649 PetscInt j, l; 650 651 if (subspaces_to_exclude != NULL) { 652 PetscBool should_exclude_k = PETSC_FALSE; 653 PetscHSetIHas(*subspaces_to_exclude, k, &should_exclude_k); 654 if (should_exclude_k) { 655 /* only get this subspace dofs at the base entity, not any others */ 656 ierr = PCPatchGetGlobalDofs(pc, patch->dofSection, k, patch->combined, base, &ldof, &loff);CHKERRQ(ierr); 657 if (0 == ldof) continue; 658 for (j = loff; j < ldof + loff; ++j) { 659 for (l = 0; l < bs; ++l) { 660 PetscInt dof = bs*j + l + subspaceOffset; 661 ierr = PetscHSetIAdd(dofs, dof);CHKERRQ(ierr); 662 } 663 } 664 continue; /* skip the other dofs of this subspace */ 665 } 666 } 667 668 PetscHashIterBegin(pts, hi); 669 while (!PetscHashIterAtEnd(pts, hi)) { 670 PetscHashIterGetKey(pts, hi, p); 671 PetscHashIterNext(pts, hi); 672 ierr = PCPatchGetGlobalDofs(pc, patch->dofSection, k, patch->combined, p, &ldof, &loff);CHKERRQ(ierr); 673 if (0 == ldof) continue; 674 for (j = loff; j < ldof + loff; ++j) { 675 for (l = 0; l < bs; ++l) { 676 PetscInt dof = bs*j + l + subspaceOffset; 677 ierr = PetscHSetIAdd(dofs, dof);CHKERRQ(ierr); 678 } 679 } 680 } 681 } 682 PetscFunctionReturn(0); 683 } 684 685 /* Given two hash tables A and B, compute the keys in B that are not in A, and put them in C */ 686 static PetscErrorCode PCPatchComputeSetDifference_Private(PetscHSetI A, PetscHSetI B, PetscHSetI C) 687 { 688 PetscHashIter hi; 689 PetscInt key; 690 PetscBool flg; 691 PetscErrorCode ierr; 692 693 PetscFunctionBegin; 694 ierr = PetscHSetIClear(C);CHKERRQ(ierr); 695 PetscHashIterBegin(B, hi); 696 while (!PetscHashIterAtEnd(B, hi)) { 697 PetscHashIterGetKey(B, hi, key); 698 PetscHashIterNext(B, hi); 699 ierr = PetscHSetIHas(A, key, &flg);CHKERRQ(ierr); 700 if (!flg) {ierr = PetscHSetIAdd(C, key);CHKERRQ(ierr);} 701 } 702 PetscFunctionReturn(0); 703 } 704 705 /* 706 * PCPatchCreateCellPatches - create patches. 707 * 708 * Input Parameters: 709 * + dm - The DMPlex object defining the mesh 710 * 711 * Output Parameters: 712 * + cellCounts - Section with counts of cells around each vertex 713 * . cells - IS of the cell point indices of cells in each patch 714 * . pointCounts - Section with counts of cells around each vertex 715 * - point - IS of the cell point indices of cells in each patch 716 */ 717 static PetscErrorCode PCPatchCreateCellPatches(PC pc) 718 { 719 PC_PATCH *patch = (PC_PATCH *) pc->data; 720 DMLabel ghost = NULL; 721 DM dm, plex; 722 PetscHSetI ht, cht; 723 PetscSection cellCounts, pointCounts; 724 PetscInt *cellsArray, *pointsArray; 725 PetscInt numCells, numPoints; 726 const PetscInt *leaves; 727 PetscInt nleaves, pStart, pEnd, cStart, cEnd, vStart, vEnd, v; 728 PetscBool isFiredrake; 729 PetscErrorCode ierr; 730 731 PetscFunctionBegin; 732 /* Used to keep track of the cells in the patch. */ 733 ierr = PetscHSetICreate(&ht);CHKERRQ(ierr); 734 ierr = PetscHSetICreate(&cht);CHKERRQ(ierr); 735 736 ierr = PCGetDM(pc, &dm);CHKERRQ(ierr); 737 if (!dm) SETERRQ(PetscObjectComm((PetscObject) pc), PETSC_ERR_ARG_WRONGSTATE, "DM not yet set on patch PC\n"); 738 ierr = DMConvert(dm, DMPLEX, &plex);CHKERRQ(ierr); 739 ierr = DMPlexGetChart(plex, &pStart, &pEnd);CHKERRQ(ierr); 740 ierr = DMPlexGetHeightStratum(plex, 0, &cStart, &cEnd);CHKERRQ(ierr); 741 742 if (patch->user_patches) { 743 ierr = patch->userpatchconstructionop(pc, &patch->npatch, &patch->userIS, &patch->iterationSet, patch->userpatchconstructctx);CHKERRQ(ierr); 744 vStart = 0; vEnd = patch->npatch; 745 } else if (patch->codim < 0) { 746 if (patch->dim < 0) {ierr = DMPlexGetDepthStratum(plex, 0, &vStart, &vEnd);CHKERRQ(ierr);} 747 else {ierr = DMPlexGetDepthStratum(plex, patch->dim, &vStart, &vEnd);CHKERRQ(ierr);} 748 } else {ierr = DMPlexGetHeightStratum(plex, patch->codim, &vStart, &vEnd);CHKERRQ(ierr);} 749 patch->npatch = vEnd - vStart; 750 751 /* These labels mark the owned points. We only create patches around points that this process owns. */ 752 ierr = DMHasLabel(dm, "pyop2_ghost", &isFiredrake);CHKERRQ(ierr); 753 if (isFiredrake) { 754 ierr = DMGetLabel(dm, "pyop2_ghost", &ghost);CHKERRQ(ierr); 755 ierr = DMLabelCreateIndex(ghost, pStart, pEnd);CHKERRQ(ierr); 756 } else { 757 PetscSF sf; 758 759 ierr = DMGetPointSF(dm, &sf);CHKERRQ(ierr); 760 ierr = PetscSFGetGraph(sf, NULL, &nleaves, &leaves, NULL);CHKERRQ(ierr); 761 nleaves = PetscMax(nleaves, 0); 762 } 763 764 ierr = PetscSectionCreate(PETSC_COMM_SELF, &patch->cellCounts);CHKERRQ(ierr); 765 ierr = PetscObjectSetName((PetscObject) patch->cellCounts, "Patch Cell Layout");CHKERRQ(ierr); 766 cellCounts = patch->cellCounts; 767 ierr = PetscSectionSetChart(cellCounts, vStart, vEnd);CHKERRQ(ierr); 768 ierr = PetscSectionCreate(PETSC_COMM_SELF, &patch->pointCounts);CHKERRQ(ierr); 769 ierr = PetscObjectSetName((PetscObject) patch->pointCounts, "Patch Point Layout");CHKERRQ(ierr); 770 pointCounts = patch->pointCounts; 771 ierr = PetscSectionSetChart(pointCounts, vStart, vEnd);CHKERRQ(ierr); 772 /* Count cells and points in the patch surrounding each entity */ 773 for (v = vStart; v < vEnd; ++v) { 774 PetscHashIter hi; 775 PetscInt chtSize, loc = -1; 776 PetscBool flg; 777 778 if (!patch->user_patches) { 779 if (ghost) {ierr = DMLabelHasPoint(ghost, v, &flg);CHKERRQ(ierr);} 780 else {ierr = PetscFindInt(v, nleaves, leaves, &loc);CHKERRQ(ierr); flg = loc >=0 ? PETSC_TRUE : PETSC_FALSE;} 781 /* Not an owned entity, don't make a cell patch. */ 782 if (flg) continue; 783 } 784 785 ierr = patch->patchconstructop((void *) patch, dm, v, ht);CHKERRQ(ierr); 786 ierr = PCPatchCompleteCellPatch(pc, ht, cht);CHKERRQ(ierr); 787 ierr = PetscHSetIGetSize(cht, &chtSize);CHKERRQ(ierr); 788 /* empty patch, continue */ 789 if (chtSize == 0) continue; 790 791 /* safe because size(cht) > 0 from above */ 792 PetscHashIterBegin(cht, hi); 793 while (!PetscHashIterAtEnd(cht, hi)) { 794 PetscInt point, pdof; 795 796 PetscHashIterGetKey(cht, hi, point); 797 ierr = PCPatchGetGlobalDofs(pc, patch->dofSection, -1, patch->combined, point, &pdof, NULL);CHKERRQ(ierr); 798 if (pdof) {ierr = PetscSectionAddDof(pointCounts, v, 1);CHKERRQ(ierr);} 799 if (point >= cStart && point < cEnd) {ierr = PetscSectionAddDof(cellCounts, v, 1);CHKERRQ(ierr);} 800 PetscHashIterNext(cht, hi); 801 } 802 } 803 if (isFiredrake) {ierr = DMLabelDestroyIndex(ghost);CHKERRQ(ierr);} 804 805 ierr = PetscSectionSetUp(cellCounts);CHKERRQ(ierr); 806 ierr = PetscSectionGetStorageSize(cellCounts, &numCells);CHKERRQ(ierr); 807 ierr = PetscMalloc1(numCells, &cellsArray);CHKERRQ(ierr); 808 ierr = PetscSectionSetUp(pointCounts);CHKERRQ(ierr); 809 ierr = PetscSectionGetStorageSize(pointCounts, &numPoints);CHKERRQ(ierr); 810 ierr = PetscMalloc1(numPoints, &pointsArray);CHKERRQ(ierr); 811 812 /* Now that we know how much space we need, run through again and actually remember the cells. */ 813 for (v = vStart; v < vEnd; v++ ) { 814 PetscHashIter hi; 815 PetscInt dof, off, cdof, coff, pdof, n = 0, cn = 0; 816 817 ierr = PetscSectionGetDof(pointCounts, v, &dof);CHKERRQ(ierr); 818 ierr = PetscSectionGetOffset(pointCounts, v, &off);CHKERRQ(ierr); 819 ierr = PetscSectionGetDof(cellCounts, v, &cdof);CHKERRQ(ierr); 820 ierr = PetscSectionGetOffset(cellCounts, v, &coff);CHKERRQ(ierr); 821 if (dof <= 0) continue; 822 ierr = patch->patchconstructop((void *) patch, dm, v, ht);CHKERRQ(ierr); 823 ierr = PCPatchCompleteCellPatch(pc, ht, cht);CHKERRQ(ierr); 824 PetscHashIterBegin(cht, hi); 825 while (!PetscHashIterAtEnd(cht, hi)) { 826 PetscInt point; 827 828 PetscHashIterGetKey(cht, hi, point); 829 ierr = PCPatchGetGlobalDofs(pc, patch->dofSection, -1, patch->combined, point, &pdof, NULL);CHKERRQ(ierr); 830 if (pdof) {pointsArray[off + n++] = point;} 831 if (point >= cStart && point < cEnd) {cellsArray[coff + cn++] = point;} 832 PetscHashIterNext(cht, hi); 833 } 834 if (cn != cdof) SETERRQ3(PETSC_COMM_SELF, PETSC_ERR_ARG_SIZ, "Number of cells in patch %D is %D, but should be %D", v, cn, cdof); 835 if (n != dof) SETERRQ3(PETSC_COMM_SELF, PETSC_ERR_ARG_SIZ, "Number of points in patch %D is %D, but should be %D", v, n, dof); 836 } 837 ierr = PetscHSetIDestroy(&ht);CHKERRQ(ierr); 838 ierr = PetscHSetIDestroy(&cht);CHKERRQ(ierr); 839 ierr = DMDestroy(&plex);CHKERRQ(ierr); 840 841 ierr = ISCreateGeneral(PETSC_COMM_SELF, numCells, cellsArray, PETSC_OWN_POINTER, &patch->cells);CHKERRQ(ierr); 842 ierr = PetscObjectSetName((PetscObject) patch->cells, "Patch Cells");CHKERRQ(ierr); 843 if (patch->viewCells) { 844 ierr = ObjectView((PetscObject) patch->cellCounts, patch->viewerCells, patch->formatCells);CHKERRQ(ierr); 845 ierr = ObjectView((PetscObject) patch->cells, patch->viewerCells, patch->formatCells);CHKERRQ(ierr); 846 } 847 ierr = ISCreateGeneral(PETSC_COMM_SELF, numPoints, pointsArray, PETSC_OWN_POINTER, &patch->points);CHKERRQ(ierr); 848 ierr = PetscObjectSetName((PetscObject) patch->points, "Patch Points");CHKERRQ(ierr); 849 if (patch->viewPoints) { 850 ierr = ObjectView((PetscObject) patch->pointCounts, patch->viewerPoints, patch->formatPoints);CHKERRQ(ierr); 851 ierr = ObjectView((PetscObject) patch->points, patch->viewerPoints, patch->formatPoints);CHKERRQ(ierr); 852 } 853 PetscFunctionReturn(0); 854 } 855 856 /* 857 * PCPatchCreateCellPatchDiscretisationInfo - Build the dof maps for cell patches 858 * 859 * Input Parameters: 860 * + dm - The DMPlex object defining the mesh 861 * . cellCounts - Section with counts of cells around each vertex 862 * . cells - IS of the cell point indices of cells in each patch 863 * . cellNumbering - Section mapping plex cell points to Firedrake cell indices. 864 * . nodesPerCell - number of nodes per cell. 865 * - cellNodeMap - map from cells to node indices (nodesPerCell * numCells) 866 * 867 * Output Parameters: 868 * + dofs - IS of local dof numbers of each cell in the patch, where local is a patch local numbering 869 * . gtolCounts - Section with counts of dofs per cell patch 870 * - gtol - IS mapping from global dofs to local dofs for each patch. 871 */ 872 static PetscErrorCode PCPatchCreateCellPatchDiscretisationInfo(PC pc) 873 { 874 PC_PATCH *patch = (PC_PATCH *) pc->data; 875 PetscSection cellCounts = patch->cellCounts; 876 PetscSection pointCounts = patch->pointCounts; 877 PetscSection gtolCounts, gtolCountsWithArtificial = NULL; 878 IS cells = patch->cells; 879 IS points = patch->points; 880 PetscSection cellNumbering = patch->cellNumbering; 881 PetscInt Nf = patch->nsubspaces; 882 PetscInt numCells, numPoints; 883 PetscInt numDofs; 884 PetscInt numGlobalDofs, numGlobalDofsWithArtificial; 885 PetscInt totalDofsPerCell = patch->totalDofsPerCell; 886 PetscInt vStart, vEnd, v; 887 const PetscInt *cellsArray, *pointsArray; 888 PetscInt *newCellsArray = NULL; 889 PetscInt *dofsArray = NULL; 890 PetscInt *dofsArrayWithArtificial = NULL; 891 PetscInt *offsArray = NULL; 892 PetscInt *offsArrayWithArtificial = NULL; 893 PetscInt *asmArray = NULL; 894 PetscInt *asmArrayWithArtificial = NULL; 895 PetscInt *globalDofsArray = NULL; 896 PetscInt *globalDofsArrayWithArtificial = NULL; 897 PetscInt globalIndex = 0; 898 PetscInt key = 0; 899 PetscInt asmKey = 0; 900 DM dm = NULL; 901 const PetscInt *bcNodes = NULL; 902 PetscHMapI ht; 903 PetscHMapI htWithArtificial; 904 PetscHSetI globalBcs; 905 PetscInt numBcs; 906 PetscHSetI ownedpts, seenpts, owneddofs, seendofs, artificialbcs; 907 PetscInt pStart, pEnd, p, i; 908 char option[PETSC_MAX_PATH_LEN]; 909 PetscErrorCode ierr; 910 911 PetscFunctionBegin; 912 913 ierr = PCGetDM(pc, &dm); CHKERRQ(ierr); 914 /* dofcounts section is cellcounts section * dofPerCell */ 915 ierr = PetscSectionGetStorageSize(cellCounts, &numCells);CHKERRQ(ierr); 916 ierr = PetscSectionGetStorageSize(patch->pointCounts, &numPoints);CHKERRQ(ierr); 917 numDofs = numCells * totalDofsPerCell; 918 ierr = PetscMalloc1(numDofs, &dofsArray);CHKERRQ(ierr); 919 ierr = PetscMalloc1(numPoints*Nf, &offsArray);CHKERRQ(ierr); 920 ierr = PetscMalloc1(numDofs, &asmArray);CHKERRQ(ierr); 921 ierr = PetscMalloc1(numCells, &newCellsArray);CHKERRQ(ierr); 922 ierr = PetscSectionGetChart(cellCounts, &vStart, &vEnd);CHKERRQ(ierr); 923 ierr = PetscSectionCreate(PETSC_COMM_SELF, &patch->gtolCounts);CHKERRQ(ierr); 924 gtolCounts = patch->gtolCounts; 925 ierr = PetscSectionSetChart(gtolCounts, vStart, vEnd);CHKERRQ(ierr); 926 ierr = PetscObjectSetName((PetscObject) patch->gtolCounts, "Patch Global Index Section");CHKERRQ(ierr); 927 928 if(patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) 929 { 930 ierr = PetscMalloc1(numPoints*Nf, &offsArrayWithArtificial);CHKERRQ(ierr); 931 ierr = PetscMalloc1(numDofs, &asmArrayWithArtificial);CHKERRQ(ierr); 932 ierr = PetscMalloc1(numDofs, &dofsArrayWithArtificial);CHKERRQ(ierr); 933 ierr = PetscSectionCreate(PETSC_COMM_SELF, &patch->gtolCountsWithArtificial);CHKERRQ(ierr); 934 gtolCountsWithArtificial = patch->gtolCountsWithArtificial; 935 ierr = PetscSectionSetChart(gtolCountsWithArtificial, vStart, vEnd);CHKERRQ(ierr); 936 ierr = PetscObjectSetName((PetscObject) patch->gtolCountsWithArtificial, "Patch Global Index Section Including Artificial BCs");CHKERRQ(ierr); 937 } 938 939 /* Outside the patch loop, get the dofs that are globally-enforced Dirichlet 940 conditions */ 941 ierr = PetscHSetICreate(&globalBcs);CHKERRQ(ierr); 942 ierr = ISGetIndices(patch->ghostBcNodes, &bcNodes); CHKERRQ(ierr); 943 ierr = ISGetSize(patch->ghostBcNodes, &numBcs); CHKERRQ(ierr); 944 for (i = 0; i < numBcs; ++i) { 945 ierr = PetscHSetIAdd(globalBcs, bcNodes[i]);CHKERRQ(ierr); /* these are already in concatenated numbering */ 946 } 947 ierr = ISRestoreIndices(patch->ghostBcNodes, &bcNodes); CHKERRQ(ierr); 948 ierr = ISDestroy(&patch->ghostBcNodes); CHKERRQ(ierr); /* memory optimisation */ 949 950 /* Hash tables for artificial BC construction */ 951 ierr = PetscHSetICreate(&ownedpts);CHKERRQ(ierr); 952 ierr = PetscHSetICreate(&seenpts);CHKERRQ(ierr); 953 ierr = PetscHSetICreate(&owneddofs);CHKERRQ(ierr); 954 ierr = PetscHSetICreate(&seendofs);CHKERRQ(ierr); 955 ierr = PetscHSetICreate(&artificialbcs);CHKERRQ(ierr); 956 957 ierr = ISGetIndices(cells, &cellsArray);CHKERRQ(ierr); 958 ierr = ISGetIndices(points, &pointsArray);CHKERRQ(ierr); 959 ierr = PetscHMapICreate(&ht);CHKERRQ(ierr); 960 ierr = PetscHMapICreate(&htWithArtificial);CHKERRQ(ierr); 961 for (v = vStart; v < vEnd; ++v) { 962 PetscInt localIndex = 0; 963 PetscInt localIndexWithArtificial = 0; 964 PetscInt dof, off, i, j, k, l; 965 966 ierr = PetscHMapIClear(ht);CHKERRQ(ierr); 967 ierr = PetscHMapIClear(htWithArtificial);CHKERRQ(ierr); 968 ierr = PetscSectionGetDof(cellCounts, v, &dof);CHKERRQ(ierr); 969 ierr = PetscSectionGetOffset(cellCounts, v, &off);CHKERRQ(ierr); 970 if (dof <= 0) continue; 971 972 /* Calculate the global numbers of the artificial BC dofs here first */ 973 ierr = patch->patchconstructop((void*)patch, dm, v, ownedpts); CHKERRQ(ierr); 974 ierr = PCPatchCompleteCellPatch(pc, ownedpts, seenpts); CHKERRQ(ierr); 975 ierr = PCPatchGetPointDofs(pc, ownedpts, owneddofs, v, &patch->subspaces_to_exclude); CHKERRQ(ierr); 976 ierr = PCPatchGetPointDofs(pc, seenpts, seendofs, v, NULL); CHKERRQ(ierr); 977 ierr = PCPatchComputeSetDifference_Private(owneddofs, seendofs, artificialbcs); CHKERRQ(ierr); 978 if (patch->viewPatches) { 979 PetscHSetI globalbcdofs; 980 PetscHashIter hi; 981 MPI_Comm comm = PetscObjectComm((PetscObject)pc); 982 983 ierr = PetscHSetICreate(&globalbcdofs);CHKERRQ(ierr); 984 ierr = PetscSynchronizedPrintf(comm, "Patch %d: owned dofs:\n", v); CHKERRQ(ierr); 985 PetscHashIterBegin(owneddofs, hi); 986 while (!PetscHashIterAtEnd(owneddofs, hi)) { 987 PetscInt globalDof; 988 989 PetscHashIterGetKey(owneddofs, hi, globalDof); 990 PetscHashIterNext(owneddofs, hi); 991 ierr = PetscSynchronizedPrintf(comm, "%d ", globalDof); CHKERRQ(ierr); 992 } 993 ierr = PetscSynchronizedPrintf(comm, "\n"); CHKERRQ(ierr); 994 ierr = PetscSynchronizedPrintf(comm, "Patch %d: seen dofs:\n", v); CHKERRQ(ierr); 995 PetscHashIterBegin(seendofs, hi); 996 while (!PetscHashIterAtEnd(seendofs, hi)) { 997 PetscInt globalDof; 998 PetscBool flg; 999 1000 PetscHashIterGetKey(seendofs, hi, globalDof); 1001 PetscHashIterNext(seendofs, hi); 1002 ierr = PetscSynchronizedPrintf(comm, "%d ", globalDof); CHKERRQ(ierr); 1003 1004 ierr = PetscHSetIHas(globalBcs, globalDof, &flg);CHKERRQ(ierr); 1005 if (flg) {ierr = PetscHSetIAdd(globalbcdofs, globalDof);CHKERRQ(ierr);} 1006 } 1007 ierr = PetscSynchronizedPrintf(comm, "\n"); CHKERRQ(ierr); 1008 ierr = PetscSynchronizedPrintf(comm, "Patch %d: global BCs:\n", v); CHKERRQ(ierr); 1009 ierr = PetscHSetIGetSize(globalbcdofs, &numBcs);CHKERRQ(ierr); 1010 if (numBcs > 0) { 1011 PetscHashIterBegin(globalbcdofs, hi); 1012 while (!PetscHashIterAtEnd(globalbcdofs, hi)) { 1013 PetscInt globalDof; 1014 PetscHashIterGetKey(globalbcdofs, hi, globalDof); 1015 PetscHashIterNext(globalbcdofs, hi); 1016 ierr = PetscSynchronizedPrintf(comm, "%d ", globalDof);CHKERRQ(ierr); 1017 } 1018 } 1019 ierr = PetscSynchronizedPrintf(comm, "\n");CHKERRQ(ierr); 1020 ierr = PetscSynchronizedPrintf(comm, "Patch %d: artificial BCs:\n", v);CHKERRQ(ierr); 1021 ierr = PetscHSetIGetSize(artificialbcs, &numBcs);CHKERRQ(ierr); 1022 if (numBcs > 0) { 1023 PetscHashIterBegin(artificialbcs, hi); 1024 while (!PetscHashIterAtEnd(artificialbcs, hi)) { 1025 PetscInt globalDof; 1026 PetscHashIterGetKey(artificialbcs, hi, globalDof); 1027 PetscHashIterNext(artificialbcs, hi); 1028 ierr = PetscSynchronizedPrintf(comm, "%d ", globalDof); CHKERRQ(ierr); 1029 } 1030 } 1031 ierr = PetscSynchronizedPrintf(comm, "\n\n"); CHKERRQ(ierr); 1032 ierr = PetscHSetIDestroy(&globalbcdofs);CHKERRQ(ierr); 1033 } 1034 for (k = 0; k < patch->nsubspaces; ++k) { 1035 const PetscInt *cellNodeMap = patch->cellNodeMap[k]; 1036 PetscInt nodesPerCell = patch->nodesPerCell[k]; 1037 PetscInt subspaceOffset = patch->subspaceOffsets[k]; 1038 PetscInt bs = patch->bs[k]; 1039 1040 for (i = off; i < off + dof; ++i) { 1041 /* Walk over the cells in this patch. */ 1042 const PetscInt c = cellsArray[i]; 1043 PetscInt cell = c; 1044 1045 /* TODO Change this to an IS */ 1046 if (cellNumbering) { 1047 ierr = PetscSectionGetDof(cellNumbering, c, &cell);CHKERRQ(ierr); 1048 if (cell <= 0) SETERRQ1(PetscObjectComm((PetscObject) pc), PETSC_ERR_ARG_OUTOFRANGE, "Cell %D doesn't appear in cell numbering map", c); 1049 ierr = PetscSectionGetOffset(cellNumbering, c, &cell);CHKERRQ(ierr); 1050 } 1051 newCellsArray[i] = cell; 1052 for (j = 0; j < nodesPerCell; ++j) { 1053 /* For each global dof, map it into contiguous local storage. */ 1054 const PetscInt globalDof = cellNodeMap[cell*nodesPerCell + j]*bs + subspaceOffset; 1055 /* finally, loop over block size */ 1056 for (l = 0; l < bs; ++l) { 1057 PetscInt localDof; 1058 PetscBool isGlobalBcDof, isArtificialBcDof; 1059 1060 /* first, check if this is either a globally enforced or locally enforced BC dof */ 1061 ierr = PetscHSetIHas(globalBcs, globalDof + l, &isGlobalBcDof);CHKERRQ(ierr); 1062 ierr = PetscHSetIHas(artificialbcs, globalDof + l, &isArtificialBcDof);CHKERRQ(ierr); 1063 1064 /* if it's either, don't ever give it a local dof number */ 1065 if (isGlobalBcDof || isArtificialBcDof) { 1066 dofsArray[globalIndex] = -1; /* don't use this in assembly in this patch */ 1067 } else { 1068 ierr = PetscHMapIGet(ht, globalDof + l, &localDof);CHKERRQ(ierr); 1069 if (localDof == -1) { 1070 localDof = localIndex++; 1071 ierr = PetscHMapISet(ht, globalDof + l, localDof);CHKERRQ(ierr); 1072 } 1073 if ( globalIndex >= numDofs ) SETERRQ2(PETSC_COMM_WORLD, PETSC_ERR_ARG_OUTOFRANGE, "Found more dofs %D than expected %D", globalIndex+1, numDofs); 1074 /* And store. */ 1075 dofsArray[globalIndex] = localDof; 1076 } 1077 1078 if(patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) { 1079 if (isGlobalBcDof) { 1080 dofsArrayWithArtificial[globalIndex] = -1; /* don't use this in assembly in this patch */ 1081 } else { 1082 ierr = PetscHMapIGet(htWithArtificial, globalDof + l, &localDof);CHKERRQ(ierr); 1083 if (localDof == -1) { 1084 localDof = localIndexWithArtificial++; 1085 ierr = PetscHMapISet(htWithArtificial, globalDof + l, localDof);CHKERRQ(ierr); 1086 } 1087 if ( globalIndex >= numDofs ) SETERRQ2(PETSC_COMM_WORLD, PETSC_ERR_ARG_OUTOFRANGE, "Found more dofs %D than expected %D", globalIndex+1, numDofs); 1088 /* And store.*/ 1089 dofsArrayWithArtificial[globalIndex] = localDof; 1090 } 1091 } 1092 globalIndex++; 1093 } 1094 } 1095 } 1096 } 1097 /*How many local dofs in this patch? */ 1098 if(patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) { 1099 ierr = PetscHMapIGetSize(htWithArtificial, &dof);CHKERRQ(ierr); 1100 ierr = PetscSectionSetDof(gtolCountsWithArtificial, v, dof);CHKERRQ(ierr); 1101 } 1102 ierr = PetscHMapIGetSize(ht, &dof);CHKERRQ(ierr); 1103 ierr = PetscSectionSetDof(gtolCounts, v, dof);CHKERRQ(ierr); 1104 } 1105 if (globalIndex != numDofs) SETERRQ2(PETSC_COMM_SELF, PETSC_ERR_ARG_OUTOFRANGE, "Expected number of dofs (%d) doesn't match found number (%d)", numDofs, globalIndex); 1106 ierr = PetscSectionSetUp(gtolCounts);CHKERRQ(ierr); 1107 ierr = PetscSectionGetStorageSize(gtolCounts, &numGlobalDofs);CHKERRQ(ierr); 1108 ierr = PetscMalloc1(numGlobalDofs, &globalDofsArray);CHKERRQ(ierr); 1109 1110 if(patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) { 1111 ierr = PetscSectionSetUp(gtolCountsWithArtificial);CHKERRQ(ierr); 1112 ierr = PetscSectionGetStorageSize(gtolCountsWithArtificial, &numGlobalDofsWithArtificial);CHKERRQ(ierr); 1113 ierr = PetscMalloc1(numGlobalDofsWithArtificial, &globalDofsArrayWithArtificial);CHKERRQ(ierr); 1114 } 1115 /* Now populate the global to local map. This could be merged into the above loop if we were willing to deal with reallocs. */ 1116 for (v = vStart; v < vEnd; ++v) { 1117 PetscHashIter hi; 1118 PetscInt dof, off, Np, ooff, i, j, k, l; 1119 1120 ierr = PetscHMapIClear(ht);CHKERRQ(ierr); 1121 ierr = PetscHMapIClear(htWithArtificial);CHKERRQ(ierr); 1122 ierr = PetscSectionGetDof(cellCounts, v, &dof);CHKERRQ(ierr); 1123 ierr = PetscSectionGetOffset(cellCounts, v, &off);CHKERRQ(ierr); 1124 ierr = PetscSectionGetDof(pointCounts, v, &Np);CHKERRQ(ierr); 1125 ierr = PetscSectionGetOffset(pointCounts, v, &ooff);CHKERRQ(ierr); 1126 if (dof <= 0) continue; 1127 1128 for (k = 0; k < patch->nsubspaces; ++k) { 1129 const PetscInt *cellNodeMap = patch->cellNodeMap[k]; 1130 PetscInt nodesPerCell = patch->nodesPerCell[k]; 1131 PetscInt subspaceOffset = patch->subspaceOffsets[k]; 1132 PetscInt bs = patch->bs[k]; 1133 PetscInt goff; 1134 1135 for (i = off; i < off + dof; ++i) { 1136 /* Reconstruct mapping of global-to-local on this patch. */ 1137 const PetscInt c = cellsArray[i]; 1138 PetscInt cell = c; 1139 1140 if (cellNumbering) {ierr = PetscSectionGetOffset(cellNumbering, c, &cell);CHKERRQ(ierr);} 1141 for (j = 0; j < nodesPerCell; ++j) { 1142 for (l = 0; l < bs; ++l) { 1143 const PetscInt globalDof = cellNodeMap[cell*nodesPerCell + j]*bs + l + subspaceOffset; 1144 const PetscInt localDof = dofsArray[key]; 1145 if (localDof >= 0) {ierr = PetscHMapISet(ht, globalDof, localDof);CHKERRQ(ierr);} 1146 if(patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) { 1147 const PetscInt localDofWithArtificial = dofsArrayWithArtificial[key]; 1148 if (localDofWithArtificial >= 0) { 1149 ierr = PetscHMapISet(htWithArtificial, globalDof, localDofWithArtificial);CHKERRQ(ierr); 1150 } 1151 } 1152 key++; 1153 } 1154 } 1155 } 1156 1157 /* Shove it in the output data structure. */ 1158 ierr = PetscSectionGetOffset(gtolCounts, v, &goff);CHKERRQ(ierr); 1159 PetscHashIterBegin(ht, hi); 1160 while (!PetscHashIterAtEnd(ht, hi)) { 1161 PetscInt globalDof, localDof; 1162 1163 PetscHashIterGetKey(ht, hi, globalDof); 1164 PetscHashIterGetVal(ht, hi, localDof); 1165 if (globalDof >= 0) globalDofsArray[goff + localDof] = globalDof; 1166 PetscHashIterNext(ht, hi); 1167 } 1168 1169 if(patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) { 1170 ierr = PetscSectionGetOffset(gtolCountsWithArtificial, v, &goff);CHKERRQ(ierr); 1171 PetscHashIterBegin(htWithArtificial, hi); 1172 while (!PetscHashIterAtEnd(htWithArtificial, hi)) { 1173 PetscInt globalDof, localDof; 1174 PetscHashIterGetKey(htWithArtificial, hi, globalDof); 1175 PetscHashIterGetVal(htWithArtificial, hi, localDof); 1176 if (globalDof >= 0) globalDofsArrayWithArtificial[goff + localDof] = globalDof; 1177 PetscHashIterNext(htWithArtificial, hi); 1178 } 1179 } 1180 1181 for (p = 0; p < Np; ++p) { 1182 const PetscInt point = pointsArray[ooff + p]; 1183 PetscInt globalDof, localDof; 1184 1185 ierr = PCPatchGetGlobalDofs(pc, patch->dofSection, k, patch->combined, point, NULL, &globalDof);CHKERRQ(ierr); 1186 ierr = PetscHMapIGet(ht, globalDof, &localDof);CHKERRQ(ierr); 1187 offsArray[(ooff + p)*Nf + k] = localDof; 1188 if(patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) { 1189 ierr = PetscHMapIGet(htWithArtificial, globalDof, &localDof);CHKERRQ(ierr); 1190 offsArrayWithArtificial[(ooff + p)*Nf + k] = localDof; 1191 } 1192 } 1193 } 1194 1195 ierr = PetscHSetIDestroy(&globalBcs);CHKERRQ(ierr); 1196 ierr = PetscHSetIDestroy(&ownedpts);CHKERRQ(ierr); 1197 ierr = PetscHSetIDestroy(&seenpts);CHKERRQ(ierr); 1198 ierr = PetscHSetIDestroy(&owneddofs);CHKERRQ(ierr); 1199 ierr = PetscHSetIDestroy(&seendofs);CHKERRQ(ierr); 1200 ierr = PetscHSetIDestroy(&artificialbcs);CHKERRQ(ierr); 1201 1202 /* At this point, we have a hash table ht built that maps globalDof -> localDof. 1203 We need to create the dof table laid out cellwise first, then by subspace, 1204 as the assembler assembles cell-wise and we need to stuff the different 1205 contributions of the different function spaces to the right places. So we loop 1206 over cells, then over subspaces. */ 1207 if (patch->nsubspaces > 1) { /* for nsubspaces = 1, data we need is already in dofsArray */ 1208 for (i = off; i < off + dof; ++i) { 1209 const PetscInt c = cellsArray[i]; 1210 PetscInt cell = c; 1211 1212 if (cellNumbering) {ierr = PetscSectionGetOffset(cellNumbering, c, &cell);CHKERRQ(ierr);} 1213 for (k = 0; k < patch->nsubspaces; ++k) { 1214 const PetscInt *cellNodeMap = patch->cellNodeMap[k]; 1215 PetscInt nodesPerCell = patch->nodesPerCell[k]; 1216 PetscInt subspaceOffset = patch->subspaceOffsets[k]; 1217 PetscInt bs = patch->bs[k]; 1218 1219 for (j = 0; j < nodesPerCell; ++j) { 1220 for (l = 0; l < bs; ++l) { 1221 const PetscInt globalDof = cellNodeMap[cell*nodesPerCell + j]*bs + l + subspaceOffset; 1222 PetscInt localDof; 1223 1224 ierr = PetscHMapIGet(ht, globalDof, &localDof);CHKERRQ(ierr); 1225 /* If it's not in the hash table, i.e. is a BC dof, 1226 then the PetscHSetIMap above gives -1, which matches 1227 exactly the convention for PETSc's matrix assembly to 1228 ignore the dof. So we don't need to do anything here */ 1229 asmArray[asmKey] = localDof; 1230 if(patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) { 1231 ierr = PetscHMapIGet(htWithArtificial, globalDof, &localDof);CHKERRQ(ierr); 1232 asmArrayWithArtificial[asmKey] = localDof; 1233 } 1234 asmKey++; 1235 } 1236 } 1237 } 1238 } 1239 } 1240 } 1241 if (1 == patch->nsubspaces) { 1242 ierr = PetscMemcpy(asmArray, dofsArray, numDofs * sizeof(PetscInt));CHKERRQ(ierr); 1243 if(patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) { 1244 ierr = PetscMemcpy(asmArrayWithArtificial, dofsArrayWithArtificial, numDofs * sizeof(PetscInt));CHKERRQ(ierr); 1245 } 1246 } 1247 1248 ierr = PetscHMapIDestroy(&ht);CHKERRQ(ierr); 1249 ierr = PetscHMapIDestroy(&htWithArtificial);CHKERRQ(ierr); 1250 ierr = ISRestoreIndices(cells, &cellsArray);CHKERRQ(ierr); 1251 ierr = ISRestoreIndices(points, &pointsArray);CHKERRQ(ierr); 1252 ierr = PetscFree(dofsArray);CHKERRQ(ierr); 1253 if(patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) { 1254 ierr = PetscFree(dofsArrayWithArtificial);CHKERRQ(ierr); 1255 } 1256 /* Create placeholder section for map from points to patch dofs */ 1257 ierr = PetscSectionCreate(PETSC_COMM_SELF, &patch->patchSection);CHKERRQ(ierr); 1258 ierr = PetscSectionSetNumFields(patch->patchSection, patch->nsubspaces);CHKERRQ(ierr); 1259 if (patch->combined) { 1260 PetscInt numFields; 1261 ierr = PetscSectionGetNumFields(patch->dofSection[0], &numFields);CHKERRQ(ierr); 1262 if (numFields != patch->nsubspaces) SETERRQ2(PetscObjectComm((PetscObject)pc), PETSC_ERR_ARG_WRONG, "Mismatch between number of section fields %D and number of subspaces %D", numFields, patch->nsubspaces); 1263 ierr = PetscSectionGetChart(patch->dofSection[0], &pStart, &pEnd);CHKERRQ(ierr); 1264 ierr = PetscSectionSetChart(patch->patchSection, pStart, pEnd);CHKERRQ(ierr); 1265 for (p = pStart; p < pEnd; ++p) { 1266 PetscInt dof, fdof, f; 1267 1268 ierr = PetscSectionGetDof(patch->dofSection[0], p, &dof);CHKERRQ(ierr); 1269 ierr = PetscSectionSetDof(patch->patchSection, p, dof);CHKERRQ(ierr); 1270 for (f = 0; f < patch->nsubspaces; ++f) { 1271 ierr = PetscSectionGetFieldDof(patch->dofSection[0], p, f, &fdof);CHKERRQ(ierr); 1272 ierr = PetscSectionSetFieldDof(patch->patchSection, p, f, fdof);CHKERRQ(ierr); 1273 } 1274 } 1275 } else { 1276 PetscInt pStartf, pEndf, f; 1277 pStart = PETSC_MAX_INT; 1278 pEnd = PETSC_MIN_INT; 1279 for (f = 0; f < patch->nsubspaces; ++f) { 1280 ierr = PetscSectionGetChart(patch->dofSection[f], &pStartf, &pEndf);CHKERRQ(ierr); 1281 pStart = PetscMin(pStart, pStartf); 1282 pEnd = PetscMax(pEnd, pEndf); 1283 } 1284 ierr = PetscSectionSetChart(patch->patchSection, pStart, pEnd);CHKERRQ(ierr); 1285 for (f = 0; f < patch->nsubspaces; ++f) { 1286 ierr = PetscSectionGetChart(patch->dofSection[f], &pStartf, &pEndf);CHKERRQ(ierr); 1287 for (p = pStartf; p < pEndf; ++p) { 1288 PetscInt fdof; 1289 ierr = PetscSectionGetDof(patch->dofSection[f], p, &fdof);CHKERRQ(ierr); 1290 ierr = PetscSectionAddDof(patch->patchSection, p, fdof);CHKERRQ(ierr); 1291 ierr = PetscSectionSetFieldDof(patch->patchSection, p, f, fdof);CHKERRQ(ierr); 1292 } 1293 } 1294 } 1295 ierr = PetscSectionSetUp(patch->patchSection);CHKERRQ(ierr); 1296 ierr = PetscSectionSetUseFieldOffsets(patch->patchSection, PETSC_TRUE);CHKERRQ(ierr); 1297 /* Replace cell indices with firedrake-numbered ones. */ 1298 ierr = ISGeneralSetIndices(cells, numCells, (const PetscInt *) newCellsArray, PETSC_OWN_POINTER);CHKERRQ(ierr); 1299 ierr = ISCreateGeneral(PETSC_COMM_SELF, numGlobalDofs, globalDofsArray, PETSC_OWN_POINTER, &patch->gtol);CHKERRQ(ierr); 1300 ierr = PetscObjectSetName((PetscObject) patch->gtol, "Global Indices");CHKERRQ(ierr); 1301 ierr = PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_g2l_view", patch->classname);CHKERRQ(ierr); 1302 ierr = PetscSectionViewFromOptions(patch->gtolCounts, (PetscObject) pc, option);CHKERRQ(ierr); 1303 ierr = ISViewFromOptions(patch->gtol, (PetscObject) pc, option);CHKERRQ(ierr); 1304 ierr = ISCreateGeneral(PETSC_COMM_SELF, numDofs, asmArray, PETSC_OWN_POINTER, &patch->dofs);CHKERRQ(ierr); 1305 ierr = ISCreateGeneral(PETSC_COMM_SELF, numPoints*Nf, offsArray, PETSC_OWN_POINTER, &patch->offs);CHKERRQ(ierr); 1306 if(patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) { 1307 ierr = ISCreateGeneral(PETSC_COMM_SELF, numGlobalDofsWithArtificial, globalDofsArrayWithArtificial, PETSC_OWN_POINTER, &patch->gtolWithArtificial);CHKERRQ(ierr); 1308 ierr = ISCreateGeneral(PETSC_COMM_SELF, numDofs, asmArrayWithArtificial, PETSC_OWN_POINTER, &patch->dofsWithArtificial);CHKERRQ(ierr); 1309 ierr = ISCreateGeneral(PETSC_COMM_SELF, numPoints*Nf, offsArrayWithArtificial, PETSC_OWN_POINTER, &patch->offsWithArtificial);CHKERRQ(ierr); 1310 } 1311 PetscFunctionReturn(0); 1312 } 1313 1314 static PetscErrorCode PCPatchZeroFillMatrix_Private(Mat mat, const PetscInt ncell, const PetscInt ndof, const PetscInt *dof) 1315 { 1316 PetscScalar *values = NULL; 1317 PetscInt rows, c, i; 1318 PetscErrorCode ierr; 1319 1320 PetscFunctionBegin; 1321 ierr = PetscCalloc1(ndof*ndof, &values);CHKERRQ(ierr); 1322 for (c = 0; c < ncell; ++c) { 1323 const PetscInt *idx = &dof[ndof*c]; 1324 ierr = MatSetValues(mat, ndof, idx, ndof, idx, values, INSERT_VALUES);CHKERRQ(ierr); 1325 } 1326 ierr = MatGetLocalSize(mat, &rows, NULL);CHKERRQ(ierr); 1327 for (i = 0; i < rows; ++i) { 1328 ierr = MatSetValues(mat, 1, &i, 1, &i, values, INSERT_VALUES);CHKERRQ(ierr); 1329 } 1330 ierr = MatAssemblyBegin(mat, MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 1331 ierr = MatAssemblyEnd(mat, MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 1332 ierr = PetscFree(values);CHKERRQ(ierr); 1333 PetscFunctionReturn(0); 1334 } 1335 1336 static PetscErrorCode PCPatchCreateMatrix_Private(PC pc, PetscInt point, Mat *mat, PetscBool withArtificial) 1337 { 1338 PC_PATCH *patch = (PC_PATCH *) pc->data; 1339 Vec x, y; 1340 PetscBool flg; 1341 PetscInt csize, rsize; 1342 const char *prefix = NULL; 1343 PetscErrorCode ierr; 1344 1345 PetscFunctionBegin; 1346 if(withArtificial) { 1347 /* would be nice if we could create a rectangular matrix of size numDofsWithArtificial x numDofs here */ 1348 x = patch->patchRHSWithArtificial[point]; 1349 y = patch->patchRHSWithArtificial[point]; 1350 } else { 1351 x = patch->patchRHS[point]; 1352 y = patch->patchUpdate[point]; 1353 } 1354 1355 ierr = VecGetSize(x, &csize);CHKERRQ(ierr); 1356 ierr = VecGetSize(y, &rsize);CHKERRQ(ierr); 1357 ierr = MatCreate(PETSC_COMM_SELF, mat);CHKERRQ(ierr); 1358 ierr = PCGetOptionsPrefix(pc, &prefix);CHKERRQ(ierr); 1359 ierr = MatSetOptionsPrefix(*mat, prefix);CHKERRQ(ierr); 1360 ierr = MatAppendOptionsPrefix(*mat, "pc_patch_sub_");CHKERRQ(ierr); 1361 if (patch->sub_mat_type) {ierr = MatSetType(*mat, patch->sub_mat_type);CHKERRQ(ierr);} 1362 else if (!patch->sub_mat_type) {ierr = MatSetType(*mat, MATDENSE);CHKERRQ(ierr);} 1363 ierr = MatSetSizes(*mat, rsize, csize, rsize, csize);CHKERRQ(ierr); 1364 ierr = PetscObjectTypeCompare((PetscObject) *mat, MATDENSE, &flg);CHKERRQ(ierr); 1365 if (!flg) {ierr = PetscObjectTypeCompare((PetscObject)*mat, MATSEQDENSE, &flg);CHKERRQ(ierr);} 1366 /* Sparse patch matrices */ 1367 if (!flg) { 1368 PetscBT bt; 1369 PetscInt *dnnz = NULL; 1370 const PetscInt *dofsArray = NULL; 1371 PetscInt pStart, pEnd, ncell, offset, c, i, j; 1372 1373 if(withArtificial) { 1374 ierr = ISGetIndices(patch->dofsWithArtificial, &dofsArray);CHKERRQ(ierr); 1375 } else { 1376 ierr = ISGetIndices(patch->dofs, &dofsArray);CHKERRQ(ierr); 1377 } 1378 ierr = PetscSectionGetChart(patch->cellCounts, &pStart, &pEnd);CHKERRQ(ierr); 1379 point += pStart; 1380 if (point >= pEnd) SETERRQ3(PETSC_COMM_SELF, PETSC_ERR_ARG_OUTOFRANGE, "Operator point %D not in [%D, %D)\n", point, pStart, pEnd);CHKERRQ(ierr); 1381 ierr = PetscSectionGetDof(patch->cellCounts, point, &ncell);CHKERRQ(ierr); 1382 ierr = PetscSectionGetOffset(patch->cellCounts, point, &offset);CHKERRQ(ierr); 1383 ierr = PetscCalloc1(rsize, &dnnz);CHKERRQ(ierr); 1384 ierr = PetscLogEventBegin(PC_Patch_Prealloc, pc, 0, 0, 0);CHKERRQ(ierr); 1385 /* XXX: This uses N^2 bits to store the sparsity pattern on a 1386 * patch. This is probably OK if the patches are not too big, 1387 * but could use quite a bit of memory for planes in 3D. 1388 * Should we switch based on the value of rsize to a 1389 * hash-table (slower, but more memory efficient) approach? */ 1390 ierr = PetscBTCreate(rsize*rsize, &bt);CHKERRQ(ierr); 1391 for (c = 0; c < ncell; ++c) { 1392 const PetscInt *idx = dofsArray + (offset + c)*patch->totalDofsPerCell; 1393 for (i = 0; i < patch->totalDofsPerCell; ++i) { 1394 const PetscInt row = idx[i]; 1395 if (row < 0) continue; 1396 for (j = 0; j < patch->totalDofsPerCell; ++j) { 1397 const PetscInt col = idx[j]; 1398 const PetscInt key = row*rsize + col; 1399 if (col < 0) continue; 1400 if (!PetscBTLookupSet(bt, key)) ++dnnz[row]; 1401 } 1402 } 1403 } 1404 ierr = PetscBTDestroy(&bt);CHKERRQ(ierr); 1405 ierr = MatXAIJSetPreallocation(*mat, 1, dnnz, NULL, NULL, NULL);CHKERRQ(ierr); 1406 ierr = PetscFree(dnnz);CHKERRQ(ierr); 1407 ierr = PCPatchZeroFillMatrix_Private(*mat, ncell, patch->totalDofsPerCell, &dofsArray[offset*patch->totalDofsPerCell]);CHKERRQ(ierr); 1408 ierr = PetscLogEventEnd(PC_Patch_Prealloc, pc, 0, 0, 0);CHKERRQ(ierr); 1409 if(withArtificial) { 1410 ierr = ISRestoreIndices(patch->dofsWithArtificial, &dofsArray);CHKERRQ(ierr); 1411 } else { 1412 ierr = ISRestoreIndices(patch->dofs, &dofsArray);CHKERRQ(ierr); 1413 } 1414 } 1415 ierr = MatSetUp(*mat);CHKERRQ(ierr); 1416 PetscFunctionReturn(0); 1417 } 1418 1419 static PetscErrorCode PCPatchComputeFunction_DMPlex_Private(PC pc, PetscInt patchNum, Vec x, Vec F, IS cellIS, PetscInt n, const PetscInt *l2p, void *ctx) 1420 { 1421 PC_PATCH *patch = (PC_PATCH *) pc->data; 1422 DM dm; 1423 PetscSection s; 1424 const PetscInt *parray, *oarray; 1425 PetscInt Nf = patch->nsubspaces, Np, poff, p, f; 1426 PetscErrorCode ierr; 1427 1428 PetscFunctionBegin; 1429 ierr = PCGetDM(pc, &dm);CHKERRQ(ierr); 1430 ierr = DMGetDefaultSection(dm, &s);CHKERRQ(ierr); 1431 /* Set offset into patch */ 1432 ierr = PetscSectionGetDof(patch->pointCounts, patchNum, &Np);CHKERRQ(ierr); 1433 ierr = PetscSectionGetOffset(patch->pointCounts, patchNum, &poff);CHKERRQ(ierr); 1434 ierr = ISGetIndices(patch->points, &parray);CHKERRQ(ierr); 1435 ierr = ISGetIndices(patch->offs, &oarray);CHKERRQ(ierr); 1436 for (f = 0; f < Nf; ++f) { 1437 for (p = 0; p < Np; ++p) { 1438 const PetscInt point = parray[poff+p]; 1439 PetscInt dof; 1440 1441 ierr = PetscSectionGetFieldDof(patch->patchSection, point, f, &dof);CHKERRQ(ierr); 1442 ierr = PetscSectionSetFieldOffset(patch->patchSection, point, f, oarray[(poff+p)*Nf+f]);CHKERRQ(ierr); 1443 if (patch->nsubspaces == 1) {ierr = PetscSectionSetOffset(patch->patchSection, point, oarray[(poff+p)*Nf+f]);CHKERRQ(ierr);} 1444 else {ierr = PetscSectionSetOffset(patch->patchSection, point, -1);CHKERRQ(ierr);} 1445 } 1446 } 1447 ierr = ISRestoreIndices(patch->points, &parray);CHKERRQ(ierr); 1448 ierr = ISRestoreIndices(patch->offs, &oarray);CHKERRQ(ierr); 1449 if (patch->viewSection) {ierr = ObjectView((PetscObject) patch->patchSection, patch->viewerSection, patch->formatSection);CHKERRQ(ierr);} 1450 ierr = DMPlexComputeResidual_Patch_Internal(pc->dm, patch->patchSection, cellIS, 0.0, x, NULL, F, ctx);CHKERRQ(ierr); 1451 PetscFunctionReturn(0); 1452 } 1453 1454 PetscErrorCode PCPatchComputeFunction_Internal(PC pc, Vec x, Vec F, PetscInt point) 1455 { 1456 PC_PATCH *patch = (PC_PATCH *) pc->data; 1457 const PetscInt *dofsArray; 1458 const PetscInt *cellsArray; 1459 PetscInt ncell, offset, pStart, pEnd; 1460 PetscErrorCode ierr; 1461 1462 PetscFunctionBegin; 1463 ierr = PetscLogEventBegin(PC_Patch_ComputeOp, pc, 0, 0, 0);CHKERRQ(ierr); 1464 if (!patch->usercomputeop) SETERRQ(PETSC_COMM_SELF, PETSC_ERR_ARG_WRONGSTATE, "Must call PCPatchSetComputeOperator() to set user callback\n"); 1465 ierr = ISGetIndices(patch->dofs, &dofsArray);CHKERRQ(ierr); 1466 ierr = ISGetIndices(patch->cells, &cellsArray);CHKERRQ(ierr); 1467 ierr = PetscSectionGetChart(patch->cellCounts, &pStart, &pEnd);CHKERRQ(ierr); 1468 1469 point += pStart; 1470 if (point >= pEnd) SETERRQ3(PETSC_COMM_SELF, PETSC_ERR_ARG_OUTOFRANGE, "Operator point %D not in [%D, %D)\n", point, pStart, pEnd);CHKERRQ(ierr); 1471 1472 ierr = PetscSectionGetDof(patch->cellCounts, point, &ncell);CHKERRQ(ierr); 1473 ierr = PetscSectionGetOffset(patch->cellCounts, point, &offset);CHKERRQ(ierr); 1474 if (ncell <= 0) { 1475 ierr = PetscLogEventEnd(PC_Patch_ComputeOp, pc, 0, 0, 0);CHKERRQ(ierr); 1476 PetscFunctionReturn(0); 1477 } 1478 PetscStackPush("PCPatch user callback"); 1479 /* Cannot reuse the same IS because the geometry info is being cached in it */ 1480 ierr = ISCreateGeneral(PETSC_COMM_SELF, ncell, cellsArray + offset, PETSC_USE_POINTER, &patch->cellIS);CHKERRQ(ierr); 1481 ierr = patch->usercomputef(pc, point, x, F, patch->cellIS, ncell*patch->totalDofsPerCell, dofsArray + offset*patch->totalDofsPerCell, patch->usercomputefctx);CHKERRQ(ierr); 1482 PetscStackPop; 1483 ierr = ISDestroy(&patch->cellIS);CHKERRQ(ierr); 1484 ierr = ISRestoreIndices(patch->dofs, &dofsArray);CHKERRQ(ierr); 1485 ierr = ISRestoreIndices(patch->cells, &cellsArray);CHKERRQ(ierr); 1486 if (patch->viewMatrix) { 1487 char name[PETSC_MAX_PATH_LEN]; 1488 1489 ierr = PetscSNPrintf(name, PETSC_MAX_PATH_LEN-1, "Patch vector for Point %D", point);CHKERRQ(ierr); 1490 ierr = PetscObjectSetName((PetscObject) F, name);CHKERRQ(ierr); 1491 ierr = ObjectView((PetscObject) F, patch->viewerMatrix, patch->formatMatrix);CHKERRQ(ierr); 1492 } 1493 ierr = PetscLogEventEnd(PC_Patch_ComputeOp, pc, 0, 0, 0);CHKERRQ(ierr); 1494 PetscFunctionReturn(0); 1495 } 1496 1497 static PetscErrorCode PCPatchComputeOperator_DMPlex_Private(PC pc, PetscInt patchNum, Vec x, Mat J, IS cellIS, PetscInt n, const PetscInt *l2p, void *ctx) 1498 { 1499 PC_PATCH *patch = (PC_PATCH *) pc->data; 1500 DM dm; 1501 PetscSection s; 1502 const PetscInt *parray, *oarray; 1503 PetscInt Nf = patch->nsubspaces, Np, poff, p, f; 1504 PetscErrorCode ierr; 1505 1506 PetscFunctionBegin; 1507 ierr = PCGetDM(pc, &dm);CHKERRQ(ierr); 1508 ierr = DMGetDefaultSection(dm, &s);CHKERRQ(ierr); 1509 /* Set offset into patch */ 1510 ierr = PetscSectionGetDof(patch->pointCounts, patchNum, &Np);CHKERRQ(ierr); 1511 ierr = PetscSectionGetOffset(patch->pointCounts, patchNum, &poff);CHKERRQ(ierr); 1512 ierr = ISGetIndices(patch->points, &parray);CHKERRQ(ierr); 1513 ierr = ISGetIndices(patch->offs, &oarray);CHKERRQ(ierr); 1514 for (f = 0; f < Nf; ++f) { 1515 for (p = 0; p < Np; ++p) { 1516 const PetscInt point = parray[poff+p]; 1517 PetscInt dof; 1518 1519 ierr = PetscSectionGetFieldDof(patch->patchSection, point, f, &dof);CHKERRQ(ierr); 1520 ierr = PetscSectionSetFieldOffset(patch->patchSection, point, f, oarray[(poff+p)*Nf+f]);CHKERRQ(ierr); 1521 if (patch->nsubspaces == 1) {ierr = PetscSectionSetOffset(patch->patchSection, point, oarray[(poff+p)*Nf+f]);CHKERRQ(ierr);} 1522 else {ierr = PetscSectionSetOffset(patch->patchSection, point, -1);CHKERRQ(ierr);} 1523 } 1524 } 1525 ierr = ISRestoreIndices(patch->points, &parray);CHKERRQ(ierr); 1526 ierr = ISRestoreIndices(patch->offs, &oarray);CHKERRQ(ierr); 1527 if (patch->viewSection) {ierr = ObjectView((PetscObject) patch->patchSection, patch->viewerSection, patch->formatSection);CHKERRQ(ierr);} 1528 /* TODO Shut off MatViewFromOptions() in MatAssemblyEnd() here */ 1529 ierr = DMPlexComputeJacobian_Patch_Internal(pc->dm, patch->patchSection, patch->patchSection, cellIS, 0.0, 0.0, x, NULL, J, J, ctx);CHKERRQ(ierr); 1530 PetscFunctionReturn(0); 1531 } 1532 1533 PetscErrorCode PCPatchComputeOperator_Internal(PC pc, Vec x, Mat mat, PetscInt point, PetscBool withArtificial) 1534 { 1535 PC_PATCH *patch = (PC_PATCH *) pc->data; 1536 const PetscInt *dofsArray; 1537 const PetscInt *cellsArray; 1538 PetscInt ncell, offset, pStart, pEnd; 1539 PetscErrorCode ierr; 1540 1541 PetscFunctionBegin; 1542 ierr = PetscLogEventBegin(PC_Patch_ComputeOp, pc, 0, 0, 0);CHKERRQ(ierr); 1543 if (!patch->usercomputeop) SETERRQ(PETSC_COMM_SELF, PETSC_ERR_ARG_WRONGSTATE, "Must call PCPatchSetComputeOperator() to set user callback\n"); 1544 if(withArtificial) { 1545 ierr = ISGetIndices(patch->dofsWithArtificial, &dofsArray);CHKERRQ(ierr); 1546 } else { 1547 ierr = ISGetIndices(patch->dofs, &dofsArray);CHKERRQ(ierr); 1548 } 1549 ierr = ISGetIndices(patch->cells, &cellsArray);CHKERRQ(ierr); 1550 ierr = PetscSectionGetChart(patch->cellCounts, &pStart, &pEnd);CHKERRQ(ierr); 1551 1552 point += pStart; 1553 if (point >= pEnd) SETERRQ3(PETSC_COMM_SELF, PETSC_ERR_ARG_OUTOFRANGE, "Operator point %D not in [%D, %D)\n", point, pStart, pEnd);CHKERRQ(ierr); 1554 1555 ierr = PetscSectionGetDof(patch->cellCounts, point, &ncell);CHKERRQ(ierr); 1556 ierr = PetscSectionGetOffset(patch->cellCounts, point, &offset);CHKERRQ(ierr); 1557 if (ncell <= 0) { 1558 ierr = PetscLogEventEnd(PC_Patch_ComputeOp, pc, 0, 0, 0);CHKERRQ(ierr); 1559 PetscFunctionReturn(0); 1560 } 1561 PetscStackPush("PCPatch user callback"); 1562 /* Cannot reuse the same IS because the geometry info is being cached in it */ 1563 ierr = ISCreateGeneral(PETSC_COMM_SELF, ncell, cellsArray + offset, PETSC_USE_POINTER, &patch->cellIS);CHKERRQ(ierr); 1564 ierr = patch->usercomputeop(pc, point, x, mat, patch->cellIS, ncell*patch->totalDofsPerCell, dofsArray + offset*patch->totalDofsPerCell, patch->usercomputeopctx);CHKERRQ(ierr); 1565 PetscStackPop; 1566 ierr = ISDestroy(&patch->cellIS);CHKERRQ(ierr); 1567 if(withArtificial) 1568 { 1569 ierr = ISRestoreIndices(patch->dofsWithArtificial, &dofsArray);CHKERRQ(ierr); 1570 } else { 1571 ierr = ISRestoreIndices(patch->dofs, &dofsArray);CHKERRQ(ierr); 1572 } 1573 ierr = ISRestoreIndices(patch->cells, &cellsArray);CHKERRQ(ierr); 1574 if (patch->viewMatrix) { 1575 char name[PETSC_MAX_PATH_LEN]; 1576 1577 ierr = PetscSNPrintf(name, PETSC_MAX_PATH_LEN-1, "Patch matrix for Point %D", point);CHKERRQ(ierr); 1578 ierr = PetscObjectSetName((PetscObject) mat, name);CHKERRQ(ierr); 1579 ierr = ObjectView((PetscObject) mat, patch->viewerMatrix, patch->formatMatrix);CHKERRQ(ierr); 1580 } 1581 ierr = PetscLogEventEnd(PC_Patch_ComputeOp, pc, 0, 0, 0);CHKERRQ(ierr); 1582 PetscFunctionReturn(0); 1583 } 1584 1585 PetscErrorCode PCPatch_ScatterLocal_Private(PC pc, PetscInt p, Vec x, Vec y, InsertMode mode, ScatterMode scat, PetscBool withArtificial) 1586 { 1587 PC_PATCH *patch = (PC_PATCH *) pc->data; 1588 const PetscScalar *xArray = NULL; 1589 PetscScalar *yArray = NULL; 1590 const PetscInt *gtolArray = NULL; 1591 PetscInt dof, offset, lidx; 1592 PetscErrorCode ierr; 1593 1594 PetscFunctionBeginHot; 1595 ierr = PetscLogEventBegin(PC_Patch_Scatter, pc, 0, 0, 0);CHKERRQ(ierr); 1596 ierr = VecGetArrayRead(x, &xArray);CHKERRQ(ierr); 1597 ierr = VecGetArray(y, &yArray);CHKERRQ(ierr); 1598 if(withArtificial) { 1599 ierr = PetscSectionGetDof(patch->gtolCountsWithArtificial, p, &dof);CHKERRQ(ierr); 1600 ierr = PetscSectionGetOffset(patch->gtolCountsWithArtificial, p, &offset);CHKERRQ(ierr); 1601 ierr = ISGetIndices(patch->gtolWithArtificial, >olArray);CHKERRQ(ierr); 1602 } else { 1603 ierr = PetscSectionGetDof(patch->gtolCounts, p, &dof);CHKERRQ(ierr); 1604 ierr = PetscSectionGetOffset(patch->gtolCounts, p, &offset);CHKERRQ(ierr); 1605 ierr = ISGetIndices(patch->gtol, >olArray);CHKERRQ(ierr); 1606 } 1607 if (mode == INSERT_VALUES && scat != SCATTER_FORWARD) SETERRQ(PETSC_COMM_SELF, PETSC_ERR_ARG_INCOMP, "Can't insert if not scattering forward\n"); 1608 if (mode == ADD_VALUES && scat != SCATTER_REVERSE) SETERRQ(PETSC_COMM_SELF, PETSC_ERR_ARG_INCOMP, "Can't add if not scattering reverse\n"); 1609 for (lidx = 0; lidx < dof; ++lidx) { 1610 const PetscInt gidx = gtolArray[offset+lidx]; 1611 1612 if (mode == INSERT_VALUES) yArray[lidx] = xArray[gidx]; /* Forward */ 1613 else yArray[gidx] += xArray[lidx]; /* Reverse */ 1614 } 1615 if(withArtificial) { 1616 ierr = ISRestoreIndices(patch->gtolWithArtificial, >olArray);CHKERRQ(ierr); 1617 } else { 1618 ierr = ISRestoreIndices(patch->gtol, >olArray);CHKERRQ(ierr); 1619 } 1620 ierr = VecRestoreArrayRead(x, &xArray);CHKERRQ(ierr); 1621 ierr = VecRestoreArray(y, &yArray);CHKERRQ(ierr); 1622 ierr = PetscLogEventEnd(PC_Patch_Scatter, pc, 0, 0, 0);CHKERRQ(ierr); 1623 PetscFunctionReturn(0); 1624 } 1625 1626 static PetscErrorCode PCSetUp_PATCH_Linear(PC pc) 1627 { 1628 PC_PATCH *patch = (PC_PATCH *) pc->data; 1629 const char *prefix; 1630 PetscInt i; 1631 PetscErrorCode ierr; 1632 1633 PetscFunctionBegin; 1634 if (!pc->setupcalled) { 1635 ierr = PetscMalloc1(patch->npatch, &patch->solver);CHKERRQ(ierr); 1636 ierr = PCGetOptionsPrefix(pc, &prefix);CHKERRQ(ierr); 1637 for (i = 0; i < patch->npatch; ++i) { 1638 KSP ksp; 1639 PC subpc; 1640 1641 ierr = KSPCreate(PETSC_COMM_SELF, &ksp);CHKERRQ(ierr); 1642 ierr = KSPSetOptionsPrefix(ksp, prefix);CHKERRQ(ierr); 1643 ierr = KSPAppendOptionsPrefix(ksp, "sub_");CHKERRQ(ierr); 1644 ierr = PetscObjectIncrementTabLevel((PetscObject) ksp, (PetscObject) pc, 1);CHKERRQ(ierr); 1645 ierr = KSPGetPC(ksp, &subpc);CHKERRQ(ierr); 1646 ierr = PetscObjectIncrementTabLevel((PetscObject) subpc, (PetscObject) pc, 1);CHKERRQ(ierr); 1647 ierr = PetscLogObjectParent((PetscObject) pc, (PetscObject) ksp);CHKERRQ(ierr); 1648 patch->solver[i] = (PetscObject) ksp; 1649 } 1650 } 1651 if (patch->save_operators) { 1652 for (i = 0; i < patch->npatch; ++i) { 1653 ierr = MatZeroEntries(patch->mat[i]);CHKERRQ(ierr); 1654 ierr = PCPatchComputeOperator_Internal(pc, NULL, patch->mat[i], i, PETSC_FALSE);CHKERRQ(ierr); 1655 ierr = KSPSetOperators((KSP) patch->solver[i], patch->mat[i], patch->mat[i]);CHKERRQ(ierr); 1656 } 1657 } 1658 if(patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) { 1659 for (i = 0; i < patch->npatch; ++i) { 1660 /* Instead of padding patch->patchUpdate with zeros to get */ 1661 /* patch->patchUpdateWithArtificial and then multiplying with the matrix, */ 1662 /* just get rid of the columns that correspond to the dofs with */ 1663 /* artificial bcs. That's of course fairly inefficient, hopefully we */ 1664 /* can just assemble the rectangular matrix in the first place. */ 1665 Mat matSquare; 1666 IS rowis; 1667 PetscInt dof; 1668 1669 ierr = MatGetSize(patch->mat[i], &dof, NULL);CHKERRQ(ierr); 1670 if (dof == 0) { 1671 patch->matWithArtificial[i] = NULL; 1672 continue; 1673 } 1674 1675 ierr = PCPatchCreateMatrix_Private(pc, i, &matSquare, PETSC_TRUE);CHKERRQ(ierr); 1676 ierr = MatZeroEntries(matSquare);CHKERRQ(ierr); 1677 ierr = PCPatchComputeOperator_Internal(pc, NULL, matSquare, i, PETSC_TRUE);CHKERRQ(ierr); 1678 1679 ierr = MatGetSize(matSquare, &dof, NULL);CHKERRQ(ierr); 1680 ierr = ISCreateStride(PETSC_COMM_SELF, dof, 0, 1, &rowis); CHKERRQ(ierr); 1681 if(pc->setupcalled) { 1682 ierr = MatCreateSubMatrix(matSquare, rowis, patch->dofMappingWithoutToWithArtificial[i], MAT_REUSE_MATRIX, &patch->matWithArtificial[i]); CHKERRQ(ierr); 1683 } else { 1684 ierr = MatCreateSubMatrix(matSquare, rowis, patch->dofMappingWithoutToWithArtificial[i], MAT_INITIAL_MATRIX, &patch->matWithArtificial[i]); CHKERRQ(ierr); 1685 } 1686 ierr = ISDestroy(&rowis); CHKERRQ(ierr); 1687 ierr = MatDestroy(&matSquare);CHKERRQ(ierr); 1688 } 1689 } 1690 PetscFunctionReturn(0); 1691 } 1692 1693 static PetscErrorCode PCSetUp_PATCH(PC pc) 1694 { 1695 PC_PATCH *patch = (PC_PATCH *) pc->data; 1696 PetscInt i; 1697 PetscErrorCode ierr; 1698 1699 PetscFunctionBegin; 1700 if (!pc->setupcalled) { 1701 PetscInt pStart, pEnd, p; 1702 PetscInt localSize; 1703 1704 ierr = PetscLogEventBegin(PC_Patch_CreatePatches, pc, 0, 0, 0);CHKERRQ(ierr); 1705 1706 if (!patch->nsubspaces) { 1707 DM dm; 1708 PetscDS prob; 1709 PetscSection s; 1710 PetscInt cStart, cEnd, c, Nf, f, numGlobalBcs = 0, *globalBcs, *Nb, totNb = 0, **cellDofs; 1711 1712 ierr = PCGetDM(pc, &dm);CHKERRQ(ierr); 1713 if (!dm) SETERRQ(PetscObjectComm((PetscObject) pc), PETSC_ERR_ARG_WRONG, "Must set DM for PCPATCH or call PCPatchSetDiscretisationInfo()"); 1714 ierr = DMGetDefaultSection(dm, &s);CHKERRQ(ierr); 1715 ierr = PetscSectionGetNumFields(s, &Nf);CHKERRQ(ierr); 1716 ierr = PetscSectionGetChart(s, &pStart, &pEnd);CHKERRQ(ierr); 1717 for (p = pStart; p < pEnd; ++p) { 1718 PetscInt cdof; 1719 ierr = PetscSectionGetConstraintDof(s, p, &cdof);CHKERRQ(ierr); 1720 numGlobalBcs += cdof; 1721 } 1722 ierr = DMPlexGetHeightStratum(dm, 0, &cStart, &cEnd);CHKERRQ(ierr); 1723 ierr = DMGetDS(dm, &prob);CHKERRQ(ierr); 1724 ierr = PetscMalloc3(Nf, &Nb, Nf, &cellDofs, numGlobalBcs, &globalBcs);CHKERRQ(ierr); 1725 for (f = 0; f < Nf; ++f) { 1726 PetscFE fe; 1727 PetscDualSpace sp; 1728 PetscInt cdoff = 0; 1729 1730 ierr = PetscDSGetDiscretization(prob, f, (PetscObject *) &fe);CHKERRQ(ierr); 1731 /* ierr = PetscFEGetNumComponents(fe, &Nc[f]);CHKERRQ(ierr); */ 1732 ierr = PetscFEGetDualSpace(fe, &sp);CHKERRQ(ierr); 1733 ierr = PetscDualSpaceGetDimension(sp, &Nb[f]);CHKERRQ(ierr); 1734 totNb += Nb[f]; 1735 1736 ierr = PetscMalloc1((cEnd-cStart)*Nb[f], &cellDofs[f]);CHKERRQ(ierr); 1737 for (c = cStart; c < cEnd; ++c) { 1738 PetscInt *closure = NULL; 1739 PetscInt clSize = 0, cl; 1740 1741 ierr = DMPlexGetTransitiveClosure(dm, c, PETSC_TRUE, &clSize, &closure);CHKERRQ(ierr); 1742 for (cl = 0; cl < clSize*2; cl += 2) { 1743 const PetscInt p = closure[cl]; 1744 PetscInt fdof, d, foff; 1745 1746 ierr = PetscSectionGetFieldDof(s, p, f, &fdof);CHKERRQ(ierr); 1747 ierr = PetscSectionGetFieldOffset(s, p, f, &foff);CHKERRQ(ierr); 1748 for (d = 0; d < fdof; ++d, ++cdoff) cellDofs[f][cdoff] = foff + d; 1749 } 1750 ierr = DMPlexRestoreTransitiveClosure(dm, c, PETSC_TRUE, &clSize, &closure);CHKERRQ(ierr); 1751 } 1752 if (cdoff != (cEnd-cStart)*Nb[f]) SETERRQ4(PetscObjectComm((PetscObject) pc), PETSC_ERR_ARG_SIZ, "Total number of cellDofs %D for field %D should be Nc (%D) * cellDof (%D)", cdoff, f, cEnd-cStart, Nb[f]); 1753 } 1754 numGlobalBcs = 0; 1755 for (p = pStart; p < pEnd; ++p) { 1756 const PetscInt *ind; 1757 PetscInt off, cdof, d; 1758 1759 ierr = PetscSectionGetOffset(s, p, &off);CHKERRQ(ierr); 1760 ierr = PetscSectionGetConstraintDof(s, p, &cdof);CHKERRQ(ierr); 1761 ierr = PetscSectionGetConstraintIndices(s, p, &ind);CHKERRQ(ierr); 1762 for (d = 0; d < cdof; ++d) globalBcs[numGlobalBcs++] = off + ind[d]; 1763 } 1764 1765 ierr = PCPatchSetDiscretisationInfoCombined(pc, dm, Nb, (const PetscInt **) cellDofs, numGlobalBcs, globalBcs, numGlobalBcs, globalBcs);CHKERRQ(ierr); 1766 for (f = 0; f < Nf; ++f) { 1767 ierr = PetscFree(cellDofs[f]);CHKERRQ(ierr); 1768 } 1769 ierr = PetscFree3(Nb, cellDofs, globalBcs);CHKERRQ(ierr); 1770 ierr = PCPatchSetComputeFunction(pc, PCPatchComputeFunction_DMPlex_Private, NULL);CHKERRQ(ierr); 1771 ierr = PCPatchSetComputeOperator(pc, PCPatchComputeOperator_DMPlex_Private, NULL);CHKERRQ(ierr); 1772 } 1773 1774 localSize = patch->subspaceOffsets[patch->nsubspaces]; 1775 ierr = VecCreateSeq(PETSC_COMM_SELF, localSize, &patch->localRHS);CHKERRQ(ierr); 1776 ierr = VecSetUp(patch->localRHS);CHKERRQ(ierr); 1777 ierr = VecDuplicate(patch->localRHS, &patch->localUpdate);CHKERRQ(ierr); 1778 ierr = PCPatchCreateCellPatches(pc);CHKERRQ(ierr); 1779 ierr = PCPatchCreateCellPatchDiscretisationInfo(pc);CHKERRQ(ierr); 1780 1781 /* OK, now build the work vectors */ 1782 ierr = PetscSectionGetChart(patch->gtolCounts, &pStart, &pEnd);CHKERRQ(ierr); 1783 ierr = PetscMalloc1(patch->npatch, &patch->patchRHS);CHKERRQ(ierr); 1784 ierr = PetscMalloc1(patch->npatch, &patch->patchUpdate);CHKERRQ(ierr); 1785 1786 if(patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) { 1787 ierr = PetscMalloc1(patch->npatch, &patch->patchRHSWithArtificial);CHKERRQ(ierr); 1788 ierr = PetscMalloc1(patch->npatch, &patch->dofMappingWithoutToWithArtificial);CHKERRQ(ierr); 1789 } 1790 for (p = pStart; p < pEnd; ++p) { 1791 PetscInt dof; 1792 1793 ierr = PetscSectionGetDof(patch->gtolCounts, p, &dof);CHKERRQ(ierr); 1794 ierr = VecCreateSeq(PETSC_COMM_SELF, dof, &patch->patchRHS[p-pStart]);CHKERRQ(ierr); 1795 ierr = VecSetUp(patch->patchRHS[p-pStart]);CHKERRQ(ierr); 1796 ierr = VecCreateSeq(PETSC_COMM_SELF, dof, &patch->patchUpdate[p-pStart]);CHKERRQ(ierr); 1797 ierr = VecSetUp(patch->patchUpdate[p-pStart]);CHKERRQ(ierr); 1798 if (patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) { 1799 const PetscInt *gtolArray, *gtolArrayWithArtificial = NULL; 1800 PetscInt numPatchDofs, offset; 1801 PetscInt numPatchDofsWithArtificial, offsetWithArtificial; 1802 PetscInt dofWithoutArtificialCounter = 0; 1803 PetscInt *patchWithoutArtificialToWithArtificialArray; 1804 1805 ierr = PetscSectionGetDof(patch->gtolCountsWithArtificial, p, &dof);CHKERRQ(ierr); 1806 ierr = VecCreateSeq(PETSC_COMM_SELF, dof, &patch->patchRHSWithArtificial[p-pStart]);CHKERRQ(ierr); 1807 ierr = VecSetUp(patch->patchRHSWithArtificial[p-pStart]);CHKERRQ(ierr); 1808 1809 /* Now build the mapping that for a dof in a patch WITHOUT dofs that have artificial bcs gives the */ 1810 /* the index in the patch with all dofs */ 1811 ierr = ISGetIndices(patch->gtol, >olArray);CHKERRQ(ierr); 1812 1813 ierr = PetscSectionGetDof(patch->gtolCounts, p, &numPatchDofs);CHKERRQ(ierr); 1814 1815 ierr = PetscSectionGetOffset(patch->gtolCounts, p, &offset);CHKERRQ(ierr); 1816 ierr = ISGetIndices(patch->gtolWithArtificial, >olArrayWithArtificial);CHKERRQ(ierr); 1817 ierr = PetscSectionGetDof(patch->gtolCountsWithArtificial, p, &numPatchDofsWithArtificial);CHKERRQ(ierr); 1818 ierr = PetscSectionGetOffset(patch->gtolCountsWithArtificial, p, &offsetWithArtificial);CHKERRQ(ierr); 1819 1820 ierr = PetscMalloc1(numPatchDofs, &patchWithoutArtificialToWithArtificialArray);CHKERRQ(ierr); 1821 1822 ierr = ISCreateGeneral(PETSC_COMM_SELF, numPatchDofs, patchWithoutArtificialToWithArtificialArray, PETSC_OWN_POINTER, &patch->dofMappingWithoutToWithArtificial[p-pStart]);CHKERRQ(ierr); 1823 if (numPatchDofs == 0) continue; 1824 for (i=0; i<numPatchDofsWithArtificial; i++) { 1825 if (gtolArrayWithArtificial[i+offsetWithArtificial] == gtolArray[offset+dofWithoutArtificialCounter]) { 1826 patchWithoutArtificialToWithArtificialArray[dofWithoutArtificialCounter] = i; 1827 dofWithoutArtificialCounter++; 1828 if (dofWithoutArtificialCounter == numPatchDofs) 1829 break; 1830 } 1831 } 1832 ierr = ISRestoreIndices(patch->gtol, >olArray);CHKERRQ(ierr); 1833 ierr = ISRestoreIndices(patch->gtolWithArtificial, >olArrayWithArtificial);CHKERRQ(ierr); 1834 } 1835 } 1836 if (patch->save_operators) { 1837 ierr = PetscMalloc1(patch->npatch, &patch->mat);CHKERRQ(ierr); 1838 for (i = 0; i < patch->npatch; ++i) { 1839 ierr = PCPatchCreateMatrix_Private(pc, i, &patch->mat[i], PETSC_FALSE);CHKERRQ(ierr); 1840 } 1841 } 1842 ierr = PetscLogEventEnd(PC_Patch_CreatePatches, pc, 0, 0, 0);CHKERRQ(ierr); 1843 1844 /* If desired, calculate weights for dof multiplicity */ 1845 if (patch->partition_of_unity) { 1846 PetscScalar *input = NULL; 1847 PetscScalar *output = NULL; 1848 Vec global; 1849 1850 ierr = VecDuplicate(patch->localRHS, &patch->dof_weights);CHKERRQ(ierr); 1851 if(patch->local_composition_type == PC_COMPOSITE_ADDITIVE) { 1852 for (i = 0; i < patch->npatch; ++i) { 1853 PetscInt dof; 1854 1855 ierr = PetscSectionGetDof(patch->gtolCounts, i+pStart, &dof);CHKERRQ(ierr); 1856 if (dof <= 0) continue; 1857 ierr = VecSet(patch->patchRHS[i], 1.0);CHKERRQ(ierr); 1858 ierr = PCPatch_ScatterLocal_Private(pc, i+pStart, patch->patchRHS[i], patch->dof_weights, ADD_VALUES, SCATTER_REVERSE, PETSC_FALSE);CHKERRQ(ierr); 1859 } 1860 } else { 1861 /* multiplicative is actually only locally multiplicative and globally additive. need the pou where the mesh decomposition overlaps */ 1862 ierr = VecSet(patch->dof_weights, 1.0);CHKERRQ(ierr); 1863 } 1864 1865 VecDuplicate(patch->dof_weights, &global); 1866 VecSet(global, 0.); 1867 1868 ierr = VecGetArray(patch->dof_weights, &input);CHKERRQ(ierr); 1869 ierr = VecGetArray(global, &output);CHKERRQ(ierr); 1870 ierr = PetscSFReduceBegin(patch->defaultSF, MPIU_SCALAR, input, output, MPI_SUM);CHKERRQ(ierr); 1871 ierr = PetscSFReduceEnd(patch->defaultSF, MPIU_SCALAR, input, output, MPI_SUM);CHKERRQ(ierr); 1872 ierr = VecRestoreArray(patch->dof_weights, &input);CHKERRQ(ierr); 1873 ierr = VecRestoreArray(global, &output);CHKERRQ(ierr); 1874 1875 ierr = VecReciprocal(global);CHKERRQ(ierr); 1876 1877 ierr = VecGetArray(patch->dof_weights, &output);CHKERRQ(ierr); 1878 ierr = VecGetArray(global, &input);CHKERRQ(ierr); 1879 ierr = PetscSFBcastBegin(patch->defaultSF, MPIU_SCALAR, input, output);CHKERRQ(ierr); 1880 ierr = PetscSFBcastEnd(patch->defaultSF, MPIU_SCALAR, input, output);CHKERRQ(ierr); 1881 ierr = VecRestoreArray(patch->dof_weights, &output);CHKERRQ(ierr); 1882 ierr = VecRestoreArray(global, &input);CHKERRQ(ierr); 1883 ierr = VecDestroy(&global);CHKERRQ(ierr); 1884 } 1885 if(patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE && patch->save_operators) { 1886 ierr = PetscMalloc1(patch->npatch, &patch->matWithArtificial);CHKERRQ(ierr); 1887 } 1888 } 1889 ierr = (*patch->setupsolver)(pc);CHKERRQ(ierr); 1890 PetscFunctionReturn(0); 1891 } 1892 1893 static PetscErrorCode PCApply_PATCH_Linear(PC pc, PetscInt i, Vec x, Vec y) 1894 { 1895 PC_PATCH *patch = (PC_PATCH *) pc->data; 1896 KSP ksp = (KSP) patch->solver[i]; 1897 PetscErrorCode ierr; 1898 1899 PetscFunctionBegin; 1900 if (!patch->save_operators) { 1901 Mat mat; 1902 1903 ierr = PCPatchCreateMatrix_Private(pc, i, &mat, PETSC_FALSE);CHKERRQ(ierr); 1904 /* Populate operator here. */ 1905 ierr = PCPatchComputeOperator_Internal(pc, NULL, mat, i, PETSC_FALSE);CHKERRQ(ierr); 1906 ierr = KSPSetOperators(ksp, mat, mat);CHKERRQ(ierr); 1907 /* Drop reference so the KSPSetOperators below will blow it away. */ 1908 ierr = MatDestroy(&mat);CHKERRQ(ierr); 1909 } 1910 ierr = PetscLogEventBegin(PC_Patch_Solve, pc, 0, 0, 0);CHKERRQ(ierr); 1911 if (!ksp->setfromoptionscalled) { 1912 ierr = KSPSetFromOptions(ksp);CHKERRQ(ierr); 1913 } 1914 ierr = KSPSolve(ksp, x, y);CHKERRQ(ierr); 1915 ierr = PetscLogEventEnd(PC_Patch_Solve, pc, 0, 0, 0);CHKERRQ(ierr); 1916 if (!patch->save_operators) { 1917 PC pc; 1918 ierr = KSPSetOperators(ksp, NULL, NULL);CHKERRQ(ierr); 1919 ierr = KSPGetPC(ksp, &pc);CHKERRQ(ierr); 1920 /* Destroy PC context too, otherwise the factored matrix hangs around. */ 1921 ierr = PCReset(pc);CHKERRQ(ierr); 1922 } 1923 PetscFunctionReturn(0); 1924 } 1925 1926 static PetscErrorCode PCApply_PATCH(PC pc, Vec x, Vec y) 1927 { 1928 PC_PATCH *patch = (PC_PATCH *) pc->data; 1929 const PetscScalar *globalRHS = NULL; 1930 PetscScalar *localRHS = NULL; 1931 PetscScalar *globalUpdate = NULL; 1932 const PetscInt *bcNodes = NULL; 1933 PetscInt nsweep = patch->symmetrise_sweep ? 2 : 1; 1934 PetscInt start[2] = {0, 0}; 1935 PetscInt end[2] = {-1, -1}; 1936 const PetscInt inc[2] = {1, -1}; 1937 const PetscScalar *localUpdate; 1938 const PetscInt *iterationSet; 1939 PetscInt pStart, numBcs, n, sweep, bc, j; 1940 PetscErrorCode ierr; 1941 1942 PetscFunctionBegin; 1943 ierr = PetscLogEventBegin(PC_Patch_Apply, pc, 0, 0, 0);CHKERRQ(ierr); 1944 ierr = PetscOptionsPushGetViewerOff(PETSC_TRUE);CHKERRQ(ierr); 1945 /* start, end, inc have 2 entries to manage a second backward sweep if we symmetrize */ 1946 end[0] = patch->npatch; 1947 start[1] = patch->npatch-1; 1948 if (patch->user_patches) { 1949 ierr = ISGetLocalSize(patch->iterationSet, &end[0]);CHKERRQ(ierr); 1950 start[1] = end[0] - 1; 1951 ierr = ISGetIndices(patch->iterationSet, &iterationSet);CHKERRQ(ierr); 1952 } 1953 /* Scatter from global space into overlapped local spaces */ 1954 ierr = VecGetArrayRead(x, &globalRHS);CHKERRQ(ierr); 1955 ierr = VecGetArray(patch->localRHS, &localRHS);CHKERRQ(ierr); 1956 ierr = PetscSFBcastBegin(patch->defaultSF, MPIU_SCALAR, globalRHS, localRHS);CHKERRQ(ierr); 1957 ierr = PetscSFBcastEnd(patch->defaultSF, MPIU_SCALAR, globalRHS, localRHS);CHKERRQ(ierr); 1958 ierr = VecRestoreArrayRead(x, &globalRHS);CHKERRQ(ierr); 1959 ierr = VecRestoreArray(patch->localRHS, &localRHS);CHKERRQ(ierr); 1960 1961 ierr = VecSet(patch->localUpdate, 0.0);CHKERRQ(ierr); 1962 ierr = PetscSectionGetChart(patch->gtolCounts, &pStart, NULL);CHKERRQ(ierr); 1963 for (sweep = 0; sweep < nsweep; sweep++) { 1964 for (j = start[sweep]; j*inc[sweep] < end[sweep]*inc[sweep]; j += inc[sweep]) { 1965 PetscInt i = patch->user_patches ? iterationSet[j] : j; 1966 PetscInt start, len; 1967 1968 ierr = PetscSectionGetDof(patch->gtolCounts, i+pStart, &len);CHKERRQ(ierr); 1969 ierr = PetscSectionGetOffset(patch->gtolCounts, i+pStart, &start);CHKERRQ(ierr); 1970 /* TODO: Squash out these guys in the setup as well. */ 1971 if (len <= 0) continue; 1972 /* TODO: Do we need different scatters for X and Y? */ 1973 ierr = PCPatch_ScatterLocal_Private(pc, i+pStart, patch->localRHS, patch->patchRHS[i], INSERT_VALUES, SCATTER_FORWARD, PETSC_FALSE);CHKERRQ(ierr); 1974 ierr = (*patch->applysolver)(pc, i, patch->patchRHS[i], patch->patchUpdate[i]);CHKERRQ(ierr); 1975 ierr = PCPatch_ScatterLocal_Private(pc, i+pStart, patch->patchUpdate[i], patch->localUpdate, ADD_VALUES, SCATTER_REVERSE, PETSC_FALSE);CHKERRQ(ierr); 1976 if(patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) { 1977 Mat multMat; 1978 if (patch->save_operators) { 1979 multMat = patch->matWithArtificial[i]; 1980 } else { 1981 /*Very inefficient, hopefully we can just assemble the rectangular matrix in the first place.*/ 1982 Mat matSquare; 1983 PetscInt dof; 1984 IS rowis; 1985 ierr = PCPatchCreateMatrix_Private(pc, i, &matSquare, PETSC_TRUE);CHKERRQ(ierr); 1986 ierr = MatZeroEntries(matSquare);CHKERRQ(ierr); 1987 ierr = PCPatchComputeOperator_Internal(pc, NULL, matSquare, i, PETSC_TRUE);CHKERRQ(ierr); 1988 ierr = MatGetSize(matSquare, &dof, NULL);CHKERRQ(ierr); 1989 ierr = ISCreateStride(PETSC_COMM_SELF, dof, 0, 1, &rowis); CHKERRQ(ierr); 1990 ierr = MatCreateSubMatrix(matSquare, rowis, patch->dofMappingWithoutToWithArtificial[i], MAT_INITIAL_MATRIX, &multMat); CHKERRQ(ierr); 1991 ierr = MatDestroy(&matSquare);CHKERRQ(ierr); 1992 ierr = ISDestroy(&rowis); CHKERRQ(ierr); 1993 } 1994 ierr = MatMult(multMat, patch->patchUpdate[i], patch->patchRHSWithArtificial[i]); CHKERRQ(ierr); 1995 ierr = VecScale(patch->patchRHSWithArtificial[i], -1.0); CHKERRQ(ierr); 1996 ierr = PCPatch_ScatterLocal_Private(pc, i + pStart, patch->patchRHSWithArtificial[i], patch->localRHS, ADD_VALUES, SCATTER_REVERSE, PETSC_TRUE); CHKERRQ(ierr); 1997 if (!patch->save_operators) { 1998 ierr = MatDestroy(&multMat); CHKERRQ(ierr); 1999 } 2000 } 2001 } 2002 } 2003 if (patch->user_patches) {ierr = ISRestoreIndices(patch->iterationSet, &iterationSet);CHKERRQ(ierr);} 2004 /* XXX: should we do this on the global vector? */ 2005 if (patch->partition_of_unity) { 2006 ierr = VecPointwiseMult(patch->localUpdate, patch->localUpdate, patch->dof_weights);CHKERRQ(ierr); 2007 } 2008 /* Now patch->localUpdate contains the solution of the patch solves, so we need to combine them all. */ 2009 ierr = VecSet(y, 0.0);CHKERRQ(ierr); 2010 ierr = VecGetArray(y, &globalUpdate);CHKERRQ(ierr); 2011 ierr = VecGetArrayRead(patch->localUpdate, &localUpdate);CHKERRQ(ierr); 2012 ierr = PetscSFReduceBegin(patch->defaultSF, MPIU_SCALAR, localUpdate, globalUpdate, MPI_SUM);CHKERRQ(ierr); 2013 ierr = PetscSFReduceEnd(patch->defaultSF, MPIU_SCALAR, localUpdate, globalUpdate, MPI_SUM);CHKERRQ(ierr); 2014 ierr = VecRestoreArrayRead(patch->localUpdate, &localUpdate);CHKERRQ(ierr); 2015 2016 /* Now we need to send the global BC values through */ 2017 ierr = VecGetArrayRead(x, &globalRHS);CHKERRQ(ierr); 2018 ierr = ISGetSize(patch->globalBcNodes, &numBcs);CHKERRQ(ierr); 2019 ierr = ISGetIndices(patch->globalBcNodes, &bcNodes);CHKERRQ(ierr); 2020 ierr = VecGetLocalSize(x, &n);CHKERRQ(ierr); 2021 for (bc = 0; bc < numBcs; ++bc) { 2022 const PetscInt idx = bcNodes[bc]; 2023 if (idx < n) globalUpdate[idx] = globalRHS[idx]; 2024 } 2025 2026 ierr = ISRestoreIndices(patch->globalBcNodes, &bcNodes);CHKERRQ(ierr); 2027 ierr = VecRestoreArrayRead(x, &globalRHS);CHKERRQ(ierr); 2028 ierr = VecRestoreArray(y, &globalUpdate);CHKERRQ(ierr); 2029 2030 ierr = PetscOptionsPopGetViewerOff();CHKERRQ(ierr); 2031 ierr = PetscLogEventEnd(PC_Patch_Apply, pc, 0, 0, 0);CHKERRQ(ierr); 2032 PetscFunctionReturn(0); 2033 } 2034 2035 static PetscErrorCode PCReset_PATCH_Linear(PC pc) 2036 { 2037 PC_PATCH *patch = (PC_PATCH *) pc->data; 2038 PetscInt i; 2039 PetscErrorCode ierr; 2040 2041 PetscFunctionBegin; 2042 if (patch->solver) { 2043 for (i = 0; i < patch->npatch; ++i) {ierr = KSPReset((KSP) patch->solver[i]);CHKERRQ(ierr);} 2044 } 2045 PetscFunctionReturn(0); 2046 } 2047 2048 static PetscErrorCode PCReset_PATCH(PC pc) 2049 { 2050 PC_PATCH *patch = (PC_PATCH *) pc->data; 2051 PetscInt i; 2052 PetscErrorCode ierr; 2053 2054 PetscFunctionBegin; 2055 /* TODO: Get rid of all these ifs */ 2056 ierr = PetscSFDestroy(&patch->defaultSF);CHKERRQ(ierr); 2057 ierr = PetscSectionDestroy(&patch->cellCounts);CHKERRQ(ierr); 2058 ierr = PetscSectionDestroy(&patch->pointCounts);CHKERRQ(ierr); 2059 ierr = PetscSectionDestroy(&patch->cellNumbering);CHKERRQ(ierr); 2060 ierr = PetscSectionDestroy(&patch->gtolCounts);CHKERRQ(ierr); 2061 ierr = ISDestroy(&patch->gtol);CHKERRQ(ierr); 2062 ierr = ISDestroy(&patch->cells);CHKERRQ(ierr); 2063 ierr = ISDestroy(&patch->points);CHKERRQ(ierr); 2064 ierr = ISDestroy(&patch->dofs);CHKERRQ(ierr); 2065 ierr = ISDestroy(&patch->offs);CHKERRQ(ierr); 2066 ierr = PetscSectionDestroy(&patch->patchSection);CHKERRQ(ierr); 2067 ierr = ISDestroy(&patch->ghostBcNodes);CHKERRQ(ierr); 2068 ierr = ISDestroy(&patch->globalBcNodes);CHKERRQ(ierr); 2069 ierr = PetscSectionDestroy(&patch->gtolCountsWithArtificial);CHKERRQ(ierr); 2070 ierr = ISDestroy(&patch->gtolWithArtificial);CHKERRQ(ierr); 2071 ierr = ISDestroy(&patch->dofsWithArtificial);CHKERRQ(ierr); 2072 ierr = ISDestroy(&patch->offsWithArtificial);CHKERRQ(ierr); 2073 2074 2075 if (patch->dofSection) for (i = 0; i < patch->nsubspaces; i++) {ierr = PetscSectionDestroy(&patch->dofSection[i]);CHKERRQ(ierr);} 2076 ierr = PetscFree(patch->dofSection);CHKERRQ(ierr); 2077 ierr = PetscFree(patch->bs);CHKERRQ(ierr); 2078 ierr = PetscFree(patch->nodesPerCell);CHKERRQ(ierr); 2079 if (patch->cellNodeMap) for (i = 0; i < patch->nsubspaces; i++) {ierr = PetscFree(patch->cellNodeMap[i]);CHKERRQ(ierr);} 2080 ierr = PetscFree(patch->cellNodeMap);CHKERRQ(ierr); 2081 ierr = PetscFree(patch->subspaceOffsets);CHKERRQ(ierr); 2082 2083 ierr = (*patch->resetsolver)(pc);CHKERRQ(ierr); 2084 2085 if (patch->subspaces_to_exclude) { 2086 PetscHSetIDestroy(&patch->subspaces_to_exclude); 2087 } 2088 2089 ierr = VecDestroy(&patch->localRHS);CHKERRQ(ierr); 2090 ierr = VecDestroy(&patch->localUpdate);CHKERRQ(ierr); 2091 if (patch->patchRHS) { 2092 for (i = 0; i < patch->npatch; ++i) {ierr = VecDestroy(&patch->patchRHS[i]);CHKERRQ(ierr);} 2093 ierr = PetscFree(patch->patchRHS);CHKERRQ(ierr); 2094 } 2095 if (patch->patchUpdate) { 2096 for (i = 0; i < patch->npatch; ++i) {ierr = VecDestroy(&patch->patchUpdate[i]);CHKERRQ(ierr);} 2097 ierr = PetscFree(patch->patchUpdate);CHKERRQ(ierr); 2098 } 2099 ierr = VecDestroy(&patch->dof_weights);CHKERRQ(ierr); 2100 if (patch->patch_dof_weights) { 2101 for (i = 0; i < patch->npatch; ++i) {ierr = VecDestroy(&patch->patch_dof_weights[i]);CHKERRQ(ierr);} 2102 ierr = PetscFree(patch->patch_dof_weights);CHKERRQ(ierr); 2103 } 2104 if (patch->mat) { 2105 for (i = 0; i < patch->npatch; ++i) {ierr = MatDestroy(&patch->mat[i]);CHKERRQ(ierr);} 2106 ierr = PetscFree(patch->mat);CHKERRQ(ierr); 2107 } 2108 if (patch->matWithArtificial) { 2109 for (i = 0; i < patch->npatch; ++i) {ierr = MatDestroy(&patch->matWithArtificial[i]);CHKERRQ(ierr);} 2110 ierr = PetscFree(patch->matWithArtificial);CHKERRQ(ierr); 2111 } 2112 if (patch->patchRHSWithArtificial) { 2113 for (i = 0; i < patch->npatch; ++i) {ierr = VecDestroy(&patch->patchRHSWithArtificial[i]);CHKERRQ(ierr);} 2114 ierr = PetscFree(patch->patchRHSWithArtificial);CHKERRQ(ierr); 2115 } 2116 if(patch->dofMappingWithoutToWithArtificial) { 2117 for (i = 0; i < patch->npatch; ++i) {ierr = ISDestroy(&patch->dofMappingWithoutToWithArtificial[i]);CHKERRQ(ierr);} 2118 ierr = PetscFree(patch->dofMappingWithoutToWithArtificial);CHKERRQ(ierr); 2119 2120 } 2121 ierr = PetscFree(patch->sub_mat_type);CHKERRQ(ierr); 2122 if (patch->userIS) { 2123 for (i = 0; i < patch->npatch; ++i) {ierr = ISDestroy(&patch->userIS[i]);CHKERRQ(ierr);} 2124 ierr = PetscFree(patch->userIS);CHKERRQ(ierr); 2125 } 2126 patch->bs = 0; 2127 patch->cellNodeMap = NULL; 2128 patch->nsubspaces = 0; 2129 ierr = ISDestroy(&patch->iterationSet);CHKERRQ(ierr); 2130 2131 ierr = PetscViewerDestroy(&patch->viewerSection);CHKERRQ(ierr); 2132 PetscFunctionReturn(0); 2133 } 2134 2135 static PetscErrorCode PCDestroy_PATCH_Linear(PC pc) 2136 { 2137 PC_PATCH *patch = (PC_PATCH *) pc->data; 2138 PetscInt i; 2139 PetscErrorCode ierr; 2140 2141 PetscFunctionBegin; 2142 if (patch->solver) { 2143 for (i = 0; i < patch->npatch; ++i) {ierr = KSPDestroy((KSP *) &patch->solver[i]);CHKERRQ(ierr);} 2144 ierr = PetscFree(patch->solver);CHKERRQ(ierr); 2145 } 2146 PetscFunctionReturn(0); 2147 } 2148 2149 static PetscErrorCode PCDestroy_PATCH(PC pc) 2150 { 2151 PC_PATCH *patch = (PC_PATCH *) pc->data; 2152 PetscErrorCode ierr; 2153 2154 PetscFunctionBegin; 2155 ierr = PCReset_PATCH(pc);CHKERRQ(ierr); 2156 ierr = (*patch->destroysolver)(pc);CHKERRQ(ierr); 2157 ierr = PetscFree(pc->data);CHKERRQ(ierr); 2158 PetscFunctionReturn(0); 2159 } 2160 2161 static PetscErrorCode PCSetFromOptions_PATCH(PetscOptionItems *PetscOptionsObject, PC pc) 2162 { 2163 PC_PATCH *patch = (PC_PATCH *) pc->data; 2164 PCPatchConstructType patchConstructionType = PC_PATCH_STAR; 2165 char sub_mat_type[PETSC_MAX_PATH_LEN]; 2166 char option[PETSC_MAX_PATH_LEN]; 2167 const char *prefix; 2168 PetscBool flg, dimflg, codimflg; 2169 MPI_Comm comm; 2170 PetscInt *ifields, nfields, k; 2171 PetscErrorCode ierr; 2172 PCCompositeType loctype = PC_COMPOSITE_ADDITIVE; 2173 2174 PetscFunctionBegin; 2175 ierr = PetscObjectGetComm((PetscObject) pc, &comm);CHKERRQ(ierr); 2176 ierr = PetscObjectGetOptionsPrefix((PetscObject) pc, &prefix);CHKERRQ(ierr); 2177 ierr = PetscOptionsHead(PetscOptionsObject, "Patch solver options");CHKERRQ(ierr); 2178 2179 ierr = PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_save_operators", patch->classname); 2180 ierr = PetscOptionsBool(option, "Store all patch operators for lifetime of object?", "PCPatchSetSaveOperators", patch->save_operators, &patch->save_operators, &flg);CHKERRQ(ierr); 2181 2182 ierr = PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_partition_of_unity", patch->classname); 2183 ierr = PetscOptionsBool(option, "Weight contributions by dof multiplicity?", "PCPatchSetPartitionOfUnity", patch->partition_of_unity, &patch->partition_of_unity, &flg);CHKERRQ(ierr); 2184 2185 ierr = PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_local_type", patch->classname); 2186 ierr = PetscOptionsEnum(option,"Type of local solver composition (additive or multiplicative)","PCPatchSetLocalComposition",PCCompositeTypes,(PetscEnum)loctype,(PetscEnum*)&loctype,&flg);CHKERRQ(ierr); 2187 if(flg) { ierr = PCPatchSetLocalComposition(pc, loctype);CHKERRQ(ierr);} 2188 2189 ierr = PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_construct_dim", patch->classname); 2190 ierr = PetscOptionsInt(option, "What dimension of mesh point to construct patches by? (0 = vertices)", "PCPATCH", patch->dim, &patch->dim, &dimflg);CHKERRQ(ierr); 2191 ierr = PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_construct_codim", patch->classname); 2192 ierr = PetscOptionsInt(option, "What co-dimension of mesh point to construct patches by? (0 = cells)", "PCPATCH", patch->codim, &patch->codim, &codimflg);CHKERRQ(ierr); 2193 if (dimflg && codimflg) {SETERRQ(comm, PETSC_ERR_ARG_WRONG, "Can only set one of dimension or co-dimension");CHKERRQ(ierr);} 2194 2195 ierr = PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_construct_type", patch->classname); 2196 ierr = PetscOptionsEnum(option, "How should the patches be constructed?", "PCPatchSetConstructType", PCPatchConstructTypes, (PetscEnum) patchConstructionType, (PetscEnum *) &patchConstructionType, &flg);CHKERRQ(ierr); 2197 if (flg) {ierr = PCPatchSetConstructType(pc, patchConstructionType, NULL, NULL);CHKERRQ(ierr);} 2198 2199 ierr = PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_vanka_dim", patch->classname); 2200 ierr = PetscOptionsInt(option, "Topological dimension of entities for Vanka to ignore", "PCPATCH", patch->vankadim, &patch->vankadim, &flg);CHKERRQ(ierr); 2201 2202 ierr = PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_ignore_dim", patch->classname); 2203 ierr = PetscOptionsInt(option, "Topological dimension of entities for completion to ignore", "PCPATCH", patch->ignoredim, &patch->ignoredim, &flg);CHKERRQ(ierr); 2204 2205 ierr = PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_sub_mat_type", patch->classname); 2206 ierr = PetscOptionsFList(option, "Matrix type for patch solves", "PCPatchSetSubMatType", MatList, NULL, sub_mat_type, PETSC_MAX_PATH_LEN, &flg);CHKERRQ(ierr); 2207 if (flg) {ierr = PCPatchSetSubMatType(pc, sub_mat_type);CHKERRQ(ierr);} 2208 2209 ierr = PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_symmetrise_sweep", patch->classname); 2210 ierr = PetscOptionsBool(option, "Go start->end, end->start?", "PCPATCH", patch->symmetrise_sweep, &patch->symmetrise_sweep, &flg);CHKERRQ(ierr); 2211 2212 /* If the user has set the number of subspaces, use that for the buffer size, 2213 otherwise use a large number */ 2214 if (patch->nsubspaces <= 0) { 2215 nfields = 128; 2216 } else { 2217 nfields = patch->nsubspaces; 2218 } 2219 ierr = PetscMalloc1(nfields, &ifields);CHKERRQ(ierr); 2220 ierr = PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_exclude_subspaces", patch->classname); 2221 ierr = PetscOptionsGetIntArray(((PetscObject)pc)->options,((PetscObject)pc)->prefix,option,ifields,&nfields,&flg);CHKERRQ(ierr); 2222 if (flg && (patchConstructionType == PC_PATCH_USER)) SETERRQ(comm, PETSC_ERR_ARG_INCOMP, "We cannot support excluding a subspace with user patches because we do not index patches with a mesh point"); 2223 if (flg) { 2224 PetscHSetIClear(patch->subspaces_to_exclude); 2225 for (k = 0; k < nfields; k++) { 2226 PetscHSetIAdd(patch->subspaces_to_exclude, ifields[k]); 2227 } 2228 } 2229 ierr = PetscFree(ifields);CHKERRQ(ierr); 2230 2231 ierr = PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_patches_view", patch->classname); 2232 ierr = PetscOptionsBool(option, "Print out information during patch construction", "PCPATCH", patch->viewPatches, &patch->viewPatches, &flg);CHKERRQ(ierr); 2233 2234 ierr = PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_cells_view", patch->classname); 2235 ierr = PetscOptionsGetViewer(comm,((PetscObject) pc)->options,prefix, option, &patch->viewerCells, &patch->formatCells, &patch->viewCells);CHKERRQ(ierr); 2236 ierr = PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_points_view", patch->classname); 2237 ierr = PetscOptionsGetViewer(comm,((PetscObject) pc)->options,prefix, option, &patch->viewerPoints, &patch->formatPoints, &patch->viewPoints);CHKERRQ(ierr); 2238 ierr = PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_section_view", patch->classname); 2239 ierr = PetscOptionsGetViewer(comm,((PetscObject) pc)->options,prefix, option, &patch->viewerSection, &patch->formatSection, &patch->viewSection);CHKERRQ(ierr); 2240 ierr = PetscSNPrintf(option, PETSC_MAX_PATH_LEN, "-%s_patch_mat_view", patch->classname); 2241 ierr = PetscOptionsGetViewer(comm,((PetscObject) pc)->options,prefix, option, &patch->viewerMatrix, &patch->formatMatrix, &patch->viewMatrix);CHKERRQ(ierr); 2242 ierr = PetscOptionsTail();CHKERRQ(ierr); 2243 patch->optionsSet = PETSC_TRUE; 2244 PetscFunctionReturn(0); 2245 } 2246 2247 static PetscErrorCode PCSetUpOnBlocks_PATCH(PC pc) 2248 { 2249 PC_PATCH *patch = (PC_PATCH*) pc->data; 2250 KSPConvergedReason reason; 2251 PetscInt i; 2252 PetscErrorCode ierr; 2253 2254 PetscFunctionBegin; 2255 if (!patch->save_operators) { 2256 /* Can't do this here because the sub KSPs don't have an operator attached yet. */ 2257 PetscFunctionReturn(0); 2258 } 2259 for (i = 0; i < patch->npatch; ++i) { 2260 if (!((KSP) patch->solver[i])->setfromoptionscalled) { 2261 ierr = KSPSetFromOptions((KSP) patch->solver[i]);CHKERRQ(ierr); 2262 } 2263 ierr = KSPSetUp((KSP) patch->solver[i]);CHKERRQ(ierr); 2264 ierr = KSPGetConvergedReason((KSP) patch->solver[i], &reason);CHKERRQ(ierr); 2265 if (reason == KSP_DIVERGED_PCSETUP_FAILED) pc->failedreason = PC_SUBPC_ERROR; 2266 } 2267 PetscFunctionReturn(0); 2268 } 2269 2270 static PetscErrorCode PCView_PATCH(PC pc, PetscViewer viewer) 2271 { 2272 PC_PATCH *patch = (PC_PATCH *) pc->data; 2273 PetscViewer sviewer; 2274 PetscBool isascii; 2275 PetscMPIInt rank; 2276 PetscErrorCode ierr; 2277 2278 PetscFunctionBegin; 2279 /* TODO Redo tabbing with set tbas in new style */ 2280 ierr = PetscObjectTypeCompare((PetscObject) viewer, PETSCVIEWERASCII, &isascii);CHKERRQ(ierr); 2281 if (!isascii) PetscFunctionReturn(0); 2282 ierr = MPI_Comm_rank(PetscObjectComm((PetscObject) pc), &rank);CHKERRQ(ierr); 2283 ierr = PetscViewerASCIIPushTab(viewer);CHKERRQ(ierr); 2284 ierr = PetscViewerASCIIPrintf(viewer, "Subspace Correction preconditioner with %d patches\n", patch->npatch);CHKERRQ(ierr); 2285 if(patch->local_composition_type == PC_COMPOSITE_MULTIPLICATIVE) { 2286 ierr = PetscViewerASCIIPrintf(viewer, "Schwarz type: multiplicative\n");CHKERRQ(ierr); 2287 } else { 2288 ierr = PetscViewerASCIIPrintf(viewer, "Schwarz type: additive\n");CHKERRQ(ierr); 2289 } 2290 if (patch->partition_of_unity) {ierr = PetscViewerASCIIPrintf(viewer, "Weighting by partition of unity\n");CHKERRQ(ierr);} 2291 else {ierr = PetscViewerASCIIPrintf(viewer, "Not weighting by partition of unity\n");CHKERRQ(ierr);} 2292 if (patch->symmetrise_sweep) {ierr = PetscViewerASCIIPrintf(viewer, "Symmetrising sweep (start->end, then end->start)\n");CHKERRQ(ierr);} 2293 else {ierr = PetscViewerASCIIPrintf(viewer, "Not symmetrising sweep\n");CHKERRQ(ierr);} 2294 if (!patch->save_operators) {ierr = PetscViewerASCIIPrintf(viewer, "Not saving patch operators (rebuilt every PCApply)\n");CHKERRQ(ierr);} 2295 else {ierr = PetscViewerASCIIPrintf(viewer, "Saving patch operators (rebuilt every PCSetUp)\n");CHKERRQ(ierr);} 2296 if (patch->patchconstructop == PCPatchConstruct_Star) {ierr = PetscViewerASCIIPrintf(viewer, "Patch construction operator: star\n");CHKERRQ(ierr);} 2297 else if (patch->patchconstructop == PCPatchConstruct_Vanka) {ierr = PetscViewerASCIIPrintf(viewer, "Patch construction operator: Vanka\n");CHKERRQ(ierr);} 2298 else if (patch->patchconstructop == PCPatchConstruct_User) {ierr = PetscViewerASCIIPrintf(viewer, "Patch construction operator: user-specified\n");CHKERRQ(ierr);} 2299 else {ierr = PetscViewerASCIIPrintf(viewer, "Patch construction operator: unknown\n");CHKERRQ(ierr);} 2300 ierr = PetscViewerASCIIPrintf(viewer, "Solver on patches (all same):\n");CHKERRQ(ierr); 2301 if (patch->solver) { 2302 ierr = PetscViewerGetSubViewer(viewer, PETSC_COMM_SELF, &sviewer);CHKERRQ(ierr); 2303 if (!rank) { 2304 ierr = PetscViewerASCIIPushTab(sviewer);CHKERRQ(ierr); 2305 ierr = PetscObjectView(patch->solver[0], sviewer);CHKERRQ(ierr); 2306 ierr = PetscViewerASCIIPopTab(sviewer);CHKERRQ(ierr); 2307 } 2308 ierr = PetscViewerRestoreSubViewer(viewer, PETSC_COMM_SELF, &sviewer);CHKERRQ(ierr); 2309 } else { 2310 ierr = PetscViewerASCIIPushTab(viewer);CHKERRQ(ierr); 2311 ierr = PetscViewerASCIIPrintf(viewer, "Solver not yet set.\n");CHKERRQ(ierr); 2312 ierr = PetscViewerASCIIPopTab(viewer);CHKERRQ(ierr); 2313 } 2314 ierr = PetscViewerASCIIPopTab(viewer);CHKERRQ(ierr); 2315 PetscFunctionReturn(0); 2316 } 2317 2318 /*MC 2319 PCPATCH - A PC object that encapsulates flexible definition of blocks for overlapping and non-overlapping 2320 small block additive preconditioners. Block definition is based on topology from 2321 a DM and equation numbering from a PetscSection. 2322 2323 Options Database Keys: 2324 + -pc_patch_cells_view - Views the process local cell numbers for each patch 2325 . -pc_patch_points_view - Views the process local mesh point numbers for each patch 2326 . -pc_patch_g2l_view - Views the map between global dofs and patch local dofs for each patch 2327 . -pc_patch_patches_view - Views the global dofs associated with each patch and its boundary 2328 - -pc_patch_sub_mat_view - Views the matrix associated with each patch 2329 2330 Level: intermediate 2331 2332 .seealso: PCType, PCCreate(), PCSetType() 2333 M*/ 2334 PETSC_EXTERN PetscErrorCode PCCreate_Patch(PC pc) 2335 { 2336 PC_PATCH *patch; 2337 PetscErrorCode ierr; 2338 2339 PetscFunctionBegin; 2340 ierr = PetscNewLog(pc, &patch);CHKERRQ(ierr); 2341 2342 if (patch->subspaces_to_exclude) { 2343 PetscHSetIDestroy(&patch->subspaces_to_exclude); 2344 } 2345 PetscHSetICreate(&patch->subspaces_to_exclude); 2346 2347 patch->classname = "pc"; 2348 2349 /* Set some defaults */ 2350 patch->combined = PETSC_FALSE; 2351 patch->save_operators = PETSC_TRUE; 2352 patch->local_composition_type = PC_COMPOSITE_ADDITIVE; 2353 patch->partition_of_unity = PETSC_FALSE; 2354 patch->codim = -1; 2355 patch->dim = -1; 2356 patch->vankadim = -1; 2357 patch->ignoredim = -1; 2358 patch->patchconstructop = PCPatchConstruct_Star; 2359 patch->symmetrise_sweep = PETSC_FALSE; 2360 patch->npatch = 0; 2361 patch->userIS = NULL; 2362 patch->optionsSet = PETSC_FALSE; 2363 patch->iterationSet = NULL; 2364 patch->user_patches = PETSC_FALSE; 2365 ierr = PetscStrallocpy(MATDENSE, (char **) &patch->sub_mat_type);CHKERRQ(ierr); 2366 patch->viewPatches = PETSC_FALSE; 2367 patch->viewCells = PETSC_FALSE; 2368 patch->viewPoints = PETSC_FALSE; 2369 patch->viewSection = PETSC_FALSE; 2370 patch->viewMatrix = PETSC_FALSE; 2371 patch->setupsolver = PCSetUp_PATCH_Linear; 2372 patch->applysolver = PCApply_PATCH_Linear; 2373 patch->resetsolver = PCReset_PATCH_Linear; 2374 patch->destroysolver = PCDestroy_PATCH_Linear; 2375 2376 pc->data = (void *) patch; 2377 pc->ops->apply = PCApply_PATCH; 2378 pc->ops->applytranspose = 0; /* PCApplyTranspose_PATCH; */ 2379 pc->ops->setup = PCSetUp_PATCH; 2380 pc->ops->reset = PCReset_PATCH; 2381 pc->ops->destroy = PCDestroy_PATCH; 2382 pc->ops->setfromoptions = PCSetFromOptions_PATCH; 2383 pc->ops->setuponblocks = PCSetUpOnBlocks_PATCH; 2384 pc->ops->view = PCView_PATCH; 2385 pc->ops->applyrichardson = 0; 2386 2387 PetscFunctionReturn(0); 2388 } 2389