1 /* 2 Defines a SNES that can consist of a collection of SNESes on patches of the domain 3 */ 4 #include <petsc/private/snesimpl.h> /*I "petscsnes.h" I*/ 5 #include <petsc/private/pcpatchimpl.h> /* We need internal access to PCPatch right now, until that part is moved to Plex */ 6 #include <petscsf.h> 7 8 typedef struct { 9 PC pc; /* The linear patch preconditioner */ 10 } SNES_Patch; 11 12 static PetscErrorCode SNESPatchComputeResidual_Private(SNES snes, Vec x, Vec F, void *ctx) 13 { 14 PC pc = (PC) ctx; 15 PC_PATCH *pcpatch = (PC_PATCH *) pc->data; 16 PetscInt pt, size, i; 17 const PetscInt *indices; 18 const PetscScalar *X; 19 PetscScalar *XWithAll; 20 PetscErrorCode ierr; 21 22 PetscFunctionBegin; 23 24 /* scatter from x to patch->patchStateWithAll[pt] */ 25 pt = pcpatch->currentPatch; 26 ierr = ISGetSize(pcpatch->dofMappingWithoutToWithAll[pt], &size);CHKERRQ(ierr); 27 28 ierr = ISGetIndices(pcpatch->dofMappingWithoutToWithAll[pt], &indices);CHKERRQ(ierr); 29 ierr = VecGetArrayRead(x, &X);CHKERRQ(ierr); 30 ierr = VecGetArray(pcpatch->patchStateWithAll[pt], &XWithAll);CHKERRQ(ierr); 31 32 for (i = 0; i < size; ++i) { 33 XWithAll[indices[i]] = X[i]; 34 } 35 36 ierr = VecRestoreArray(pcpatch->patchStateWithAll[pt], &XWithAll);CHKERRQ(ierr); 37 ierr = VecRestoreArrayRead(x, &X);CHKERRQ(ierr); 38 ierr = ISRestoreIndices(pcpatch->dofMappingWithoutToWithAll[pt], &indices);CHKERRQ(ierr); 39 40 ierr = PCPatchComputeFunction_Internal(pc, pcpatch->patchStateWithAll[pt], F, pt);CHKERRQ(ierr); 41 PetscFunctionReturn(0); 42 } 43 44 static PetscErrorCode SNESPatchComputeJacobian_Private(SNES snes, Vec x, Mat J, Mat M, void *ctx) 45 { 46 PC pc = (PC) ctx; 47 PC_PATCH *pcpatch = (PC_PATCH *) pc->data; 48 PetscInt pt, size, i; 49 const PetscInt *indices; 50 const PetscScalar *X; 51 PetscScalar *XWithAll; 52 PetscErrorCode ierr; 53 54 PetscFunctionBegin; 55 /* scatter from x to patch->patchStateWithAll[pt] */ 56 pt = pcpatch->currentPatch; 57 ierr = ISGetSize(pcpatch->dofMappingWithoutToWithAll[pt], &size);CHKERRQ(ierr); 58 59 ierr = ISGetIndices(pcpatch->dofMappingWithoutToWithAll[pt], &indices);CHKERRQ(ierr); 60 ierr = VecGetArrayRead(x, &X);CHKERRQ(ierr); 61 ierr = VecGetArray(pcpatch->patchStateWithAll[pt], &XWithAll);CHKERRQ(ierr); 62 63 for (i = 0; i < size; ++i) { 64 XWithAll[indices[i]] = X[i]; 65 } 66 67 ierr = VecRestoreArray(pcpatch->patchStateWithAll[pt], &XWithAll);CHKERRQ(ierr); 68 ierr = VecRestoreArrayRead(x, &X);CHKERRQ(ierr); 69 ierr = ISRestoreIndices(pcpatch->dofMappingWithoutToWithAll[pt], &indices);CHKERRQ(ierr); 70 71 ierr = PCPatchComputeOperator_Internal(pc, pcpatch->patchStateWithAll[pt], M, pcpatch->currentPatch, PETSC_FALSE);CHKERRQ(ierr); 72 PetscFunctionReturn(0); 73 } 74 75 static PetscErrorCode PCSetUp_PATCH_Nonlinear(PC pc) 76 { 77 PC_PATCH *patch = (PC_PATCH *) pc->data; 78 const char *prefix; 79 PetscInt i, pStart, dof; 80 PetscErrorCode ierr; 81 82 PetscFunctionBegin; 83 if (!pc->setupcalled) { 84 ierr = PetscMalloc1(patch->npatch, &patch->solver);CHKERRQ(ierr); 85 ierr = PCGetOptionsPrefix(pc, &prefix);CHKERRQ(ierr); 86 ierr = PetscSectionGetChart(patch->gtolCounts, &pStart, NULL);CHKERRQ(ierr); 87 for (i = 0; i < patch->npatch; ++i) { 88 SNES snes; 89 KSP subksp; 90 91 ierr = SNESCreate(PETSC_COMM_SELF, &snes);CHKERRQ(ierr); 92 ierr = SNESSetOptionsPrefix(snes, prefix);CHKERRQ(ierr); 93 ierr = SNESAppendOptionsPrefix(snes, "sub_");CHKERRQ(ierr); 94 ierr = PetscObjectIncrementTabLevel((PetscObject) snes, (PetscObject) pc, 2);CHKERRQ(ierr); 95 ierr = SNESGetKSP(snes, &subksp);CHKERRQ(ierr); 96 ierr = PetscObjectIncrementTabLevel((PetscObject) subksp, (PetscObject) pc, 2);CHKERRQ(ierr); 97 ierr = PetscLogObjectParent((PetscObject) pc, (PetscObject) snes);CHKERRQ(ierr); 98 patch->solver[i] = (PetscObject) snes; 99 } 100 101 ierr = PetscMalloc1(patch->npatch, &patch->patchResidual);CHKERRQ(ierr); 102 ierr = PetscMalloc1(patch->npatch, &patch->patchState);CHKERRQ(ierr); 103 ierr = PetscMalloc1(patch->npatch, &patch->patchStateWithAll);CHKERRQ(ierr); 104 for (i = 0; i < patch->npatch; ++i) { 105 ierr = VecDuplicate(patch->patchRHS[i], &patch->patchResidual[i]);CHKERRQ(ierr); 106 ierr = VecDuplicate(patch->patchUpdate[i], &patch->patchState[i]);CHKERRQ(ierr); 107 108 ierr = PetscSectionGetDof(patch->gtolCountsWithAll, i+pStart, &dof);CHKERRQ(ierr); 109 ierr = VecCreateSeq(PETSC_COMM_SELF, dof, &patch->patchStateWithAll[i]);CHKERRQ(ierr); 110 ierr = VecSetUp(patch->patchStateWithAll[i]);CHKERRQ(ierr); 111 } 112 ierr = VecDuplicate(patch->localUpdate, &patch->localState);CHKERRQ(ierr); 113 } 114 for (i = 0; i < patch->npatch; ++i) { 115 SNES snes = (SNES) patch->solver[i]; 116 117 ierr = SNESSetFunction(snes, patch->patchResidual[i], SNESPatchComputeResidual_Private, pc);CHKERRQ(ierr); 118 ierr = SNESSetJacobian(snes, patch->mat[i], patch->mat[i], SNESPatchComputeJacobian_Private, pc);CHKERRQ(ierr); 119 } 120 if (!pc->setupcalled && patch->optionsSet) for (i = 0; i < patch->npatch; ++i) {ierr = SNESSetFromOptions((SNES) patch->solver[i]);CHKERRQ(ierr);} 121 PetscFunctionReturn(0); 122 } 123 124 static PetscErrorCode PCApply_PATCH_Nonlinear(PC pc, PetscInt i, Vec patchRHS, Vec patchUpdate) 125 { 126 PC_PATCH *patch = (PC_PATCH *) pc->data; 127 PetscInt pStart; 128 PetscErrorCode ierr; 129 130 PetscFunctionBegin; 131 patch->currentPatch = i; 132 ierr = PetscLogEventBegin(PC_Patch_Solve, pc, 0, 0, 0);CHKERRQ(ierr); 133 134 /* Scatter the overlapped global state to our patch state vector */ 135 ierr = PetscSectionGetChart(patch->gtolCounts, &pStart, NULL);CHKERRQ(ierr); 136 ierr = PCPatch_ScatterLocal_Private(pc, i+pStart, patch->localState, patch->patchState[i], INSERT_VALUES, SCATTER_FORWARD, SCATTER_INTERIOR);CHKERRQ(ierr); 137 ierr = PCPatch_ScatterLocal_Private(pc, i+pStart, patch->localState, patch->patchStateWithAll[i], INSERT_VALUES, SCATTER_FORWARD, SCATTER_WITHALL);CHKERRQ(ierr); 138 139 /* Set initial guess to be current state*/ 140 ierr = VecCopy(patch->patchState[i], patchUpdate);CHKERRQ(ierr); 141 /* Solve for new state */ 142 ierr = SNESSolve((SNES) patch->solver[i], patchRHS, patchUpdate);CHKERRQ(ierr); 143 /* To compute update, subtract off previous state */ 144 ierr = VecAXPY(patchUpdate, -1.0, patch->patchState[i]);CHKERRQ(ierr); 145 146 ierr = PetscLogEventEnd(PC_Patch_Solve, pc, 0, 0, 0);CHKERRQ(ierr); 147 PetscFunctionReturn(0); 148 } 149 150 static PetscErrorCode PCReset_PATCH_Nonlinear(PC pc) 151 { 152 PC_PATCH *patch = (PC_PATCH *) pc->data; 153 PetscInt i; 154 PetscErrorCode ierr; 155 156 PetscFunctionBegin; 157 if (patch->solver) { 158 for (i = 0; i < patch->npatch; ++i) {ierr = SNESReset((SNES) patch->solver[i]);CHKERRQ(ierr);} 159 } 160 161 if (patch->patchResidual) { 162 for (i = 0; i < patch->npatch; ++i) {ierr = VecDestroy(&patch->patchResidual[i]);CHKERRQ(ierr);} 163 ierr = PetscFree(patch->patchResidual);CHKERRQ(ierr); 164 } 165 166 if (patch->patchState) { 167 for (i = 0; i < patch->npatch; ++i) {ierr = VecDestroy(&patch->patchState[i]);CHKERRQ(ierr);} 168 ierr = PetscFree(patch->patchState);CHKERRQ(ierr); 169 } 170 171 if (patch->patchStateWithAll) { 172 for (i = 0; i < patch->npatch; ++i) {ierr = VecDestroy(&patch->patchStateWithAll[i]);CHKERRQ(ierr);} 173 ierr = PetscFree(patch->patchStateWithAll);CHKERRQ(ierr); 174 } 175 176 ierr = VecDestroy(&patch->localState);CHKERRQ(ierr); 177 PetscFunctionReturn(0); 178 } 179 180 static PetscErrorCode PCDestroy_PATCH_Nonlinear(PC pc) 181 { 182 PC_PATCH *patch = (PC_PATCH *) pc->data; 183 PetscInt i; 184 PetscErrorCode ierr; 185 186 PetscFunctionBegin; 187 if (patch->solver) { 188 for (i = 0; i < patch->npatch; ++i) {ierr = SNESDestroy((SNES *) &patch->solver[i]);CHKERRQ(ierr);} 189 ierr = PetscFree(patch->solver);CHKERRQ(ierr); 190 } 191 PetscFunctionReturn(0); 192 } 193 194 static PetscErrorCode PCUpdateMultiplicative_PATCH_Nonlinear(PC pc, PetscInt i, PetscInt pStart) 195 { 196 PC_PATCH *patch = (PC_PATCH *) pc->data; 197 PetscErrorCode ierr; 198 199 PetscFunctionBegin; 200 ierr = PCPatch_ScatterLocal_Private(pc, i + pStart, patch->patchUpdate[i], patch->localState, ADD_VALUES, SCATTER_REVERSE, SCATTER_INTERIOR);CHKERRQ(ierr); 201 PetscFunctionReturn(0); 202 } 203 204 static PetscErrorCode SNESSetUp_Patch(SNES snes) 205 { 206 SNES_Patch *patch = (SNES_Patch *) snes->data; 207 DM dm; 208 Mat dummy; 209 Vec F; 210 PetscInt n, N; 211 PetscErrorCode ierr; 212 213 PetscFunctionBegin; 214 ierr = SNESGetDM(snes, &dm);CHKERRQ(ierr); 215 ierr = PCSetDM(patch->pc, dm);CHKERRQ(ierr); 216 ierr = SNESGetFunction(snes, &F, NULL, NULL);CHKERRQ(ierr); 217 ierr = VecGetLocalSize(F, &n);CHKERRQ(ierr); 218 ierr = VecGetSize(F, &N);CHKERRQ(ierr); 219 ierr = MatCreateShell(PetscObjectComm((PetscObject) snes), n, n, N, N, (void *) snes, &dummy);CHKERRQ(ierr); 220 ierr = PCSetOperators(patch->pc, dummy, dummy);CHKERRQ(ierr); 221 ierr = MatDestroy(&dummy);CHKERRQ(ierr); 222 ierr = PCSetUp(patch->pc);CHKERRQ(ierr); 223 /* allocate workspace */ 224 PetscFunctionReturn(0); 225 } 226 227 static PetscErrorCode SNESReset_Patch(SNES snes) 228 { 229 SNES_Patch *patch = (SNES_Patch *) snes->data; 230 PetscErrorCode ierr; 231 232 PetscFunctionBegin; 233 ierr = PCReset(patch->pc);CHKERRQ(ierr); 234 PetscFunctionReturn(0); 235 } 236 237 static PetscErrorCode SNESDestroy_Patch(SNES snes) 238 { 239 SNES_Patch *patch = (SNES_Patch *) snes->data; 240 PetscErrorCode ierr; 241 242 PetscFunctionBegin; 243 ierr = SNESReset_Patch(snes);CHKERRQ(ierr); 244 ierr = PCDestroy(&patch->pc);CHKERRQ(ierr); 245 ierr = PetscFree(snes->data);CHKERRQ(ierr); 246 PetscFunctionReturn(0); 247 } 248 249 static PetscErrorCode SNESSetFromOptions_Patch(PetscOptionItems *PetscOptionsObject, SNES snes) 250 { 251 SNES_Patch *patch = (SNES_Patch *) snes->data; 252 const char *prefix; 253 PetscErrorCode ierr; 254 255 PetscFunctionBegin; 256 ierr = PetscObjectGetOptionsPrefix((PetscObject)snes, &prefix);CHKERRQ(ierr); 257 ierr = PetscObjectSetOptionsPrefix((PetscObject)patch->pc, prefix);CHKERRQ(ierr); 258 ierr = PCSetFromOptions(patch->pc);CHKERRQ(ierr); 259 PetscFunctionReturn(0); 260 } 261 262 static PetscErrorCode SNESView_Patch(SNES snes,PetscViewer viewer) 263 { 264 SNES_Patch *patch = (SNES_Patch *) snes->data; 265 PetscBool iascii; 266 PetscErrorCode ierr; 267 268 PetscFunctionBegin; 269 ierr = PetscObjectTypeCompare((PetscObject) viewer, PETSCVIEWERASCII, &iascii);CHKERRQ(ierr); 270 if (iascii) { 271 ierr = PetscViewerASCIIPrintf(viewer,"SNESPATCH\n");CHKERRQ(ierr); 272 } 273 ierr = PetscViewerASCIIPushTab(viewer);CHKERRQ(ierr); 274 ierr = PCView(patch->pc, viewer);CHKERRQ(ierr); 275 ierr = PetscViewerASCIIPopTab(viewer);CHKERRQ(ierr); 276 PetscFunctionReturn(0); 277 } 278 279 static PetscErrorCode SNESSolve_Patch(SNES snes) 280 { 281 SNES_Patch *patch = (SNES_Patch *) snes->data; 282 PC_PATCH *pcpatch = (PC_PATCH *) patch->pc->data; 283 SNESLineSearch ls; 284 Vec rhs, update, state, residual; 285 const PetscScalar *globalState = NULL; 286 PetscScalar *localState = NULL; 287 PetscInt its = 0; 288 PetscReal xnorm = 0.0, ynorm = 0.0, fnorm = 0.0; 289 PetscErrorCode ierr; 290 291 PetscFunctionBegin; 292 ierr = SNESGetSolution(snes, &state);CHKERRQ(ierr); 293 ierr = SNESGetSolutionUpdate(snes, &update);CHKERRQ(ierr); 294 ierr = SNESGetRhs(snes, &rhs);CHKERRQ(ierr); 295 296 ierr = SNESGetFunction(snes, &residual, NULL, NULL);CHKERRQ(ierr); 297 ierr = SNESGetLineSearch(snes, &ls);CHKERRQ(ierr); 298 299 ierr = SNESSetConvergedReason(snes, SNES_CONVERGED_ITERATING);CHKERRQ(ierr); 300 ierr = VecSet(update, 0.0);CHKERRQ(ierr); 301 ierr = SNESComputeFunction(snes, state, residual);CHKERRQ(ierr); 302 303 ierr = VecNorm(state, NORM_2, &xnorm);CHKERRQ(ierr); 304 ierr = VecNorm(residual, NORM_2, &fnorm);CHKERRQ(ierr); 305 snes->ttol = fnorm*snes->rtol; 306 307 if (snes->ops->converged) { 308 ierr = (*snes->ops->converged)(snes,its,xnorm,ynorm,fnorm,&snes->reason,snes->cnvP);CHKERRQ(ierr); 309 } else { 310 ierr = SNESConvergedSkip(snes,its,xnorm,ynorm,fnorm,&snes->reason,0);CHKERRQ(ierr); 311 } 312 ierr = SNESLogConvergenceHistory(snes, fnorm, 0);CHKERRQ(ierr); /* should we count lits from the patches? */ 313 ierr = SNESMonitor(snes, its, fnorm);CHKERRQ(ierr); 314 315 /* The main solver loop */ 316 for (its = 0; its < snes->max_its; its++) { 317 318 ierr = SNESSetIterationNumber(snes, its);CHKERRQ(ierr); 319 320 /* Scatter state vector to overlapped vector on all patches. 321 The vector pcpatch->localState is scattered to each patch 322 in PCApply_PATCH_Nonlinear. */ 323 ierr = VecGetArrayRead(state, &globalState);CHKERRQ(ierr); 324 ierr = VecGetArray(pcpatch->localState, &localState);CHKERRQ(ierr); 325 ierr = PetscSFBcastBegin(pcpatch->defaultSF, MPIU_SCALAR, globalState, localState);CHKERRQ(ierr); 326 ierr = PetscSFBcastEnd(pcpatch->defaultSF, MPIU_SCALAR, globalState, localState);CHKERRQ(ierr); 327 ierr = VecRestoreArray(pcpatch->localState, &localState);CHKERRQ(ierr); 328 ierr = VecRestoreArrayRead(state, &globalState);CHKERRQ(ierr); 329 330 /* The looping over patches happens here */ 331 ierr = PCApply(patch->pc, rhs, update);CHKERRQ(ierr); 332 333 /* Apply a line search. This will often be basic with 334 damping = 1/(max number of patches a dof can be in), 335 but not always */ 336 ierr = VecScale(update, -1.0);CHKERRQ(ierr); 337 ierr = SNESLineSearchApply(ls, state, residual, &fnorm, update);CHKERRQ(ierr); 338 339 ierr = VecNorm(state, NORM_2, &xnorm);CHKERRQ(ierr); 340 ierr = VecNorm(update, NORM_2, &ynorm);CHKERRQ(ierr); 341 342 if (snes->ops->converged) { 343 ierr = (*snes->ops->converged)(snes,its,xnorm,ynorm,fnorm,&snes->reason,snes->cnvP);CHKERRQ(ierr); 344 } else { 345 ierr = SNESConvergedSkip(snes,its,xnorm,ynorm,fnorm,&snes->reason,0);CHKERRQ(ierr); 346 } 347 ierr = SNESLogConvergenceHistory(snes, fnorm, 0);CHKERRQ(ierr); /* FIXME: should we count lits? */ 348 ierr = SNESMonitor(snes, its, fnorm);CHKERRQ(ierr); 349 } 350 351 if (its == snes->max_its) { ierr = SNESSetConvergedReason(snes, SNES_DIVERGED_MAX_IT);CHKERRQ(ierr); } 352 PetscFunctionReturn(0); 353 } 354 355 /*MC 356 SNESPATCH - Solve a nonlinear problem by composing together many nonlinear solvers on patches 357 358 Level: intermediate 359 360 Concepts: composing solvers 361 362 .seealso: SNESCreate(), SNESSetType(), SNESType (for list of available types), SNES, 363 PCPATCH 364 365 References: 366 . 1. - Peter R. Brune, Matthew G. Knepley, Barry F. Smith, and Xuemin Tu, "Composing Scalable Nonlinear Algebraic Solvers", SIAM Review, 57(4), 2015 367 368 M*/ 369 PETSC_EXTERN PetscErrorCode SNESCreate_Patch(SNES snes) 370 { 371 PetscErrorCode ierr; 372 SNES_Patch *patch; 373 PC_PATCH *patchpc; 374 375 PetscFunctionBegin; 376 ierr = PetscNewLog(snes, &patch);CHKERRQ(ierr); 377 378 snes->ops->solve = SNESSolve_Patch; 379 snes->ops->setup = SNESSetUp_Patch; 380 snes->ops->reset = SNESReset_Patch; 381 snes->ops->destroy = SNESDestroy_Patch; 382 snes->ops->setfromoptions = SNESSetFromOptions_Patch; 383 snes->ops->view = SNESView_Patch; 384 385 snes->alwayscomputesfinalresidual = PETSC_FALSE; 386 387 snes->data = (void *) patch; 388 ierr = PCCreate(PetscObjectComm((PetscObject) snes), &patch->pc);CHKERRQ(ierr); 389 ierr = PCSetType(patch->pc, PCPATCH);CHKERRQ(ierr); 390 391 patchpc = (PC_PATCH*) patch->pc->data; 392 patchpc->classname = "snes"; 393 patchpc->isNonlinear = PETSC_TRUE; 394 395 patchpc->setupsolver = PCSetUp_PATCH_Nonlinear; 396 patchpc->applysolver = PCApply_PATCH_Nonlinear; 397 patchpc->resetsolver = PCReset_PATCH_Nonlinear; 398 patchpc->destroysolver = PCDestroy_PATCH_Nonlinear; 399 patchpc->updatemultiplicative = PCUpdateMultiplicative_PATCH_Nonlinear; 400 401 PetscFunctionReturn(0); 402 } 403 404 PetscErrorCode SNESPatchSetDiscretisationInfo(SNES snes, PetscInt nsubspaces, DM *dms, PetscInt *bs, PetscInt *nodesPerCell, const PetscInt **cellNodeMap, 405 const PetscInt *subspaceOffsets, PetscInt numGhostBcs, const PetscInt *ghostBcNodes, PetscInt numGlobalBcs, const PetscInt *globalBcNodes) 406 { 407 SNES_Patch *patch = (SNES_Patch *) snes->data; 408 PetscErrorCode ierr; 409 DM dm; 410 411 PetscFunctionBegin; 412 ierr = SNESGetDM(snes, &dm);CHKERRQ(ierr); 413 if (!dm) SETERRQ(PetscObjectComm((PetscObject)snes), PETSC_ERR_ARG_WRONGSTATE, "DM not yet set on patch SNES\n"); 414 ierr = PCSetDM(patch->pc, dm);CHKERRQ(ierr); 415 ierr = PCPatchSetDiscretisationInfo(patch->pc, nsubspaces, dms, bs, nodesPerCell, cellNodeMap, subspaceOffsets, numGhostBcs, ghostBcNodes, numGlobalBcs, globalBcNodes);CHKERRQ(ierr); 416 PetscFunctionReturn(0); 417 } 418 419 PetscErrorCode SNESPatchSetComputeOperator(SNES snes, PetscErrorCode (*func)(PC, PetscInt, Vec, Mat, IS, PetscInt, const PetscInt *, const PetscInt *, void *), void *ctx) 420 { 421 SNES_Patch *patch = (SNES_Patch *) snes->data; 422 PetscErrorCode ierr; 423 424 PetscFunctionBegin; 425 ierr = PCPatchSetComputeOperator(patch->pc, func, ctx);CHKERRQ(ierr); 426 PetscFunctionReturn(0); 427 } 428 429 PetscErrorCode SNESPatchSetComputeFunction(SNES snes, PetscErrorCode (*func)(PC, PetscInt, Vec, Vec, IS, PetscInt, const PetscInt *, const PetscInt *, void *), void *ctx) 430 { 431 SNES_Patch *patch = (SNES_Patch *) snes->data; 432 PetscErrorCode ierr; 433 434 PetscFunctionBegin; 435 ierr = PCPatchSetComputeFunction(patch->pc, func, ctx);CHKERRQ(ierr); 436 PetscFunctionReturn(0); 437 } 438 439 PetscErrorCode SNESPatchSetConstructType(SNES snes, PCPatchConstructType ctype, PetscErrorCode (*func)(PC, PetscInt *, IS **, IS *, void *), void *ctx) 440 { 441 SNES_Patch *patch = (SNES_Patch *) snes->data; 442 PetscErrorCode ierr; 443 444 PetscFunctionBegin; 445 ierr = PCPatchSetConstructType(patch->pc, ctype, func, ctx);CHKERRQ(ierr); 446 PetscFunctionReturn(0); 447 } 448 449 PetscErrorCode SNESPatchSetCellNumbering(SNES snes, PetscSection cellNumbering) 450 { 451 SNES_Patch *patch = (SNES_Patch *) snes->data; 452 PetscErrorCode ierr; 453 454 PetscFunctionBegin; 455 ierr = PCPatchSetCellNumbering(patch->pc, cellNumbering);CHKERRQ(ierr); 456 PetscFunctionReturn(0); 457 } 458