Actual source code: matmpidensecupm.hpp

  1: #pragma once

  3: #include <petsc/private/matdensecupmimpl.h>
  4: #include <../src/mat/impls/dense/mpi/mpidense.h>

  6: #include <../src/mat/impls/dense/seq/cupm/matseqdensecupm.hpp>
  7: #include <../src/vec/vec/impls/mpi/cupm/vecmpicupm.hpp>

  9: namespace Petsc
 10: {

 12: namespace mat
 13: {

 15: namespace cupm
 16: {

 18: namespace impl
 19: {

 21: template <device::cupm::DeviceType T>
 22: class PETSC_SINGLE_LIBRARY_VISIBILITY_INTERNAL MatDense_MPI_CUPM : MatDense_CUPM<T, MatDense_MPI_CUPM<T>> {
 23: public:
 24:   MATDENSECUPM_HEADER(T, MatDense_MPI_CUPM<T>);

 26: private:
 27:   PETSC_NODISCARD static constexpr Mat_MPIDense *MatIMPLCast_(Mat) noexcept;
 28:   PETSC_NODISCARD static constexpr MatType       MATIMPLCUPM_() noexcept;

 30:   static PetscErrorCode SetPreallocation_(Mat, PetscDeviceContext, PetscScalar *) noexcept;

 32:   template <bool to_host>
 33:   static PetscErrorCode Convert_Dispatch_(Mat, MatType, MatReuse, Mat *) noexcept;

 35: public:
 36:   PETSC_NODISCARD static constexpr const char *MatConvert_mpidensecupm_mpidense_C() noexcept;

 38:   PETSC_NODISCARD static constexpr const char *MatProductSetFromOptions_mpiaij_mpidensecupm_C() noexcept;
 39:   PETSC_NODISCARD static constexpr const char *MatProductSetFromOptions_mpidensecupm_mpiaij_C() noexcept;

 41:   PETSC_NODISCARD static constexpr const char *MatProductSetFromOptions_mpiaijcupmsparse_mpidensecupm_C() noexcept;
 42:   PETSC_NODISCARD static constexpr const char *MatProductSetFromOptions_mpidensecupm_mpiaijcupmsparse_C() noexcept;

 44:   static PetscErrorCode Create(Mat) noexcept;

 46:   static PetscErrorCode BindToCPU(Mat, PetscBool) noexcept;
 47:   static PetscErrorCode Convert_MPIDenseCUPM_MPIDense(Mat, MatType, MatReuse, Mat *) noexcept;
 48:   static PetscErrorCode Convert_MPIDense_MPIDenseCUPM(Mat, MatType, MatReuse, Mat *) noexcept;

 50:   template <PetscMemType, PetscMemoryAccessMode>
 51:   static PetscErrorCode GetArray(Mat, PetscScalar **, PetscDeviceContext = nullptr) noexcept;
 52:   template <PetscMemType, PetscMemoryAccessMode>
 53:   static PetscErrorCode RestoreArray(Mat, PetscScalar **, PetscDeviceContext = nullptr) noexcept;

 55: private:
 56:   template <PetscMemType mtype, PetscMemoryAccessMode mode>
 57:   static PetscErrorCode GetArrayC_(Mat m, PetscScalar **p) noexcept
 58:   {
 59:     return GetArray<mtype, mode>(m, p);
 60:   }

 62:   template <PetscMemType mtype, PetscMemoryAccessMode mode>
 63:   static PetscErrorCode RestoreArrayC_(Mat m, PetscScalar **p) noexcept
 64:   {
 65:     return RestoreArray<mtype, mode>(m, p);
 66:   }

 68: public:
 69:   template <PetscMemoryAccessMode>
 70:   static PetscErrorCode GetColumnVec(Mat, PetscInt, Vec *) noexcept;
 71:   template <PetscMemoryAccessMode>
 72:   static PetscErrorCode RestoreColumnVec(Mat, PetscInt, Vec *) noexcept;

 74:   static PetscErrorCode PlaceArray(Mat, const PetscScalar *) noexcept;
 75:   static PetscErrorCode ReplaceArray(Mat, const PetscScalar *) noexcept;
 76:   static PetscErrorCode ResetArray(Mat) noexcept;
 77: };

 79: } // namespace impl

 81: namespace
 82: {

 84: // Declare this here so that the functions below can make use of it
 85: template <device::cupm::DeviceType T>
 86: inline PetscErrorCode MatCreateMPIDenseCUPM(MPI_Comm comm, PetscInt m, PetscInt n, PetscInt M, PetscInt N, PetscScalar *data, Mat *A, PetscDeviceContext dctx = nullptr, bool preallocate = true) noexcept
 87: {
 88:   PetscFunctionBegin;
 89:   PetscCall(impl::MatDense_MPI_CUPM<T>::CreateIMPLDenseCUPM(comm, m, n, M, N, data, A, dctx, preallocate));
 90:   PetscFunctionReturn(PETSC_SUCCESS);
 91: }

 93: } // anonymous namespace

 95: namespace impl
 96: {

 98: // ==========================================================================================
 99: // MatDense_MPI_CUPM -- Private API
100: // ==========================================================================================

102: template <device::cupm::DeviceType T>
103: inline constexpr Mat_MPIDense *MatDense_MPI_CUPM<T>::MatIMPLCast_(Mat m) noexcept
104: {
105:   return static_cast<Mat_MPIDense *>(m->data);
106: }

108: template <device::cupm::DeviceType T>
109: inline constexpr MatType MatDense_MPI_CUPM<T>::MATIMPLCUPM_() noexcept
110: {
111:   return MATMPIDENSECUPM();
112: }

114: // ==========================================================================================

116: template <device::cupm::DeviceType T>
117: inline PetscErrorCode MatDense_MPI_CUPM<T>::SetPreallocation_(Mat A, PetscDeviceContext dctx, PetscScalar *device_array) noexcept
118: {
119:   PetscFunctionBegin;
120:   if (auto &mimplA = MatIMPLCast(A)->A) {
121:     PetscCall(MatSetType(mimplA, MATSEQDENSECUPM()));
122:     PetscCall(MatDense_Seq_CUPM<T>::SetPreallocation(mimplA, dctx, device_array));
123:   } else {
124:     PetscCall(MatCreateSeqDenseCUPM<T>(PETSC_COMM_SELF, A->rmap->n, A->cmap->N, device_array, &mimplA, dctx));
125:   }
126:   PetscFunctionReturn(PETSC_SUCCESS);
127: }

129: template <device::cupm::DeviceType T>
130: template <bool to_host>
131: inline PetscErrorCode MatDense_MPI_CUPM<T>::Convert_Dispatch_(Mat M, MatType, MatReuse reuse, Mat *newmat) noexcept
132: {
133:   PetscFunctionBegin;
134:   if (reuse == MAT_INITIAL_MATRIX) {
135:     PetscCall(MatDuplicate(M, MAT_COPY_VALUES, newmat));
136:   } else if (reuse == MAT_REUSE_MATRIX) {
137:     PetscCall(MatCopy(M, *newmat, SAME_NONZERO_PATTERN));
138:   }
139:   {
140:     const auto B    = *newmat;
141:     const auto pobj = PetscObjectCast(B);

143:     if (to_host) {
144:       PetscCall(BindToCPU(B, PETSC_TRUE));
145:     } else {
146:       PetscCall(PetscDeviceInitialize(PETSC_DEVICE_CUPM()));
147:     }

149:     PetscCall(PetscStrFreeAllocpy(to_host ? VECSTANDARD : VecMPI_CUPM::VECCUPM(), &B->defaultvectype));
150:     PetscCall(PetscObjectChangeTypeName(pobj, to_host ? MATMPIDENSE : MATMPIDENSECUPM()));

152:     // ============================================================
153:     // Composed Ops
154:     // ============================================================
155:     MatComposeOp_CUPM(to_host, pobj, MatConvert_mpidensecupm_mpidense_C(), nullptr, Convert_MPIDenseCUPM_MPIDense);
156:     MatComposeOp_CUPM(to_host, pobj, MatProductSetFromOptions_mpiaij_mpidensecupm_C(), nullptr, MatProductSetFromOptions_MPIAIJ_MPIDense);
157:     MatComposeOp_CUPM(to_host, pobj, MatProductSetFromOptions_mpiaijcupmsparse_mpidensecupm_C(), nullptr, MatProductSetFromOptions_MPIAIJ_MPIDense);
158:     MatComposeOp_CUPM(to_host, pobj, MatProductSetFromOptions_mpidensecupm_mpiaij_C(), nullptr, MatProductSetFromOptions_MPIDense_MPIAIJ);
159:     MatComposeOp_CUPM(to_host, pobj, MatProductSetFromOptions_mpidensecupm_mpiaijcupmsparse_C(), nullptr, MatProductSetFromOptions_MPIDense_MPIAIJ);
160:     MatComposeOp_CUPM(to_host, pobj, MatDenseCUPMGetArray_C(), nullptr, GetArrayC_<PETSC_MEMTYPE_DEVICE, PETSC_MEMORY_ACCESS_READ_WRITE>);
161:     MatComposeOp_CUPM(to_host, pobj, MatDenseCUPMGetArrayRead_C(), nullptr, GetArrayC_<PETSC_MEMTYPE_DEVICE, PETSC_MEMORY_ACCESS_READ>);
162:     MatComposeOp_CUPM(to_host, pobj, MatDenseCUPMGetArrayWrite_C(), nullptr, GetArrayC_<PETSC_MEMTYPE_DEVICE, PETSC_MEMORY_ACCESS_WRITE>);
163:     MatComposeOp_CUPM(to_host, pobj, MatDenseCUPMRestoreArray_C(), nullptr, RestoreArrayC_<PETSC_MEMTYPE_DEVICE, PETSC_MEMORY_ACCESS_READ_WRITE>);
164:     MatComposeOp_CUPM(to_host, pobj, MatDenseCUPMRestoreArrayRead_C(), nullptr, RestoreArrayC_<PETSC_MEMTYPE_DEVICE, PETSC_MEMORY_ACCESS_READ>);
165:     MatComposeOp_CUPM(to_host, pobj, MatDenseCUPMRestoreArrayWrite_C(), nullptr, RestoreArrayC_<PETSC_MEMTYPE_DEVICE, PETSC_MEMORY_ACCESS_WRITE>);
166:     MatComposeOp_CUPM(to_host, pobj, MatDenseCUPMPlaceArray_C(), nullptr, PlaceArray);
167:     MatComposeOp_CUPM(to_host, pobj, MatDenseCUPMResetArray_C(), nullptr, ResetArray);
168:     MatComposeOp_CUPM(to_host, pobj, MatDenseCUPMReplaceArray_C(), nullptr, ReplaceArray);
169:     MatComposeOp_CUPM(to_host, pobj, MatDenseCUPMSetPreallocation_C(), nullptr, SetPreallocation);

171:     if (to_host) {
172:       if (auto &m_A = MatIMPLCast(B)->A) PetscCall(MatConvert(m_A, MATSEQDENSE, MAT_INPLACE_MATRIX, &m_A));
173:       B->offloadmask = PETSC_OFFLOAD_CPU;
174:     } else {
175:       if (auto &m_A = MatIMPLCast(B)->A) {
176:         PetscCall(MatConvert(m_A, MATSEQDENSECUPM(), MAT_INPLACE_MATRIX, &m_A));
177:         B->offloadmask = PETSC_OFFLOAD_BOTH;
178:       } else {
179:         B->offloadmask = PETSC_OFFLOAD_UNALLOCATED;
180:       }
181:       PetscCall(BindToCPU(B, PETSC_FALSE));
182:     }

184:     // ============================================================
185:     // Function Pointer Ops
186:     // ============================================================
187:     MatSetOp_CUPM(to_host, B, getdiagonal, MatGetDiagonal_MPIDense, GetDiagonal);
188:     MatSetOp_CUPM(to_host, B, bindtocpu, nullptr, BindToCPU);
189:   }
190:   PetscFunctionReturn(PETSC_SUCCESS);
191: }

193: // ==========================================================================================
194: // MatDense_MPI_CUPM -- Public API
195: // ==========================================================================================

197: template <device::cupm::DeviceType T>
198: inline constexpr const char *MatDense_MPI_CUPM<T>::MatConvert_mpidensecupm_mpidense_C() noexcept
199: {
200:   return T == device::cupm::DeviceType::CUDA ? "MatConvert_mpidensecuda_mpidense_C" : "MatConvert_mpidensehip_mpidense_C";
201: }

203: template <device::cupm::DeviceType T>
204: inline constexpr const char *MatDense_MPI_CUPM<T>::MatProductSetFromOptions_mpiaij_mpidensecupm_C() noexcept
205: {
206:   return T == device::cupm::DeviceType::CUDA ? "MatProductSetFromOptions_mpiaij_mpidensecuda_C" : "MatProductSetFromOptions_mpiaij_mpidensehip_C";
207: }

209: template <device::cupm::DeviceType T>
210: inline constexpr const char *MatDense_MPI_CUPM<T>::MatProductSetFromOptions_mpidensecupm_mpiaij_C() noexcept
211: {
212:   return T == device::cupm::DeviceType::CUDA ? "MatProductSetFromOptions_mpidensecuda_mpiaij_C" : "MatProductSetFromOptions_mpidensehip_mpiaij_C";
213: }

215: template <device::cupm::DeviceType T>
216: inline constexpr const char *MatDense_MPI_CUPM<T>::MatProductSetFromOptions_mpiaijcupmsparse_mpidensecupm_C() noexcept
217: {
218:   return T == device::cupm::DeviceType::CUDA ? "MatProductSetFromOptions_mpiaijcusparse_mpidensecuda_C" : "MatProductSetFromOptions_mpiaijhipsparse_mpidensehip_C";
219: }

221: template <device::cupm::DeviceType T>
222: inline constexpr const char *MatDense_MPI_CUPM<T>::MatProductSetFromOptions_mpidensecupm_mpiaijcupmsparse_C() noexcept
223: {
224:   return T == device::cupm::DeviceType::CUDA ? "MatProductSetFromOptions_mpidensecuda_mpiaijcusparse_C" : "MatProductSetFromOptions_mpidensehip_mpiaijhipsparse_C";
225: }

227: // ==========================================================================================

229: template <device::cupm::DeviceType T>
230: inline PetscErrorCode MatDense_MPI_CUPM<T>::Create(Mat A) noexcept
231: {
232:   PetscFunctionBegin;
233:   PetscCall(MatCreate_MPIDense(A));
234:   PetscCall(Convert_MPIDense_MPIDenseCUPM(A, MATMPIDENSECUPM(), MAT_INPLACE_MATRIX, &A));
235:   PetscFunctionReturn(PETSC_SUCCESS);
236: }

238: // ==========================================================================================

240: template <device::cupm::DeviceType T>
241: inline PetscErrorCode MatDense_MPI_CUPM<T>::BindToCPU(Mat A, PetscBool usehost) noexcept
242: {
243:   const auto mimpl = MatIMPLCast(A);
244:   const auto pobj  = PetscObjectCast(A);

246:   PetscFunctionBegin;
247:   PetscCheck(!mimpl->vecinuse, PetscObjectComm(pobj), PETSC_ERR_ORDER, "Need to call MatDenseRestoreColumnVec() first");
248:   PetscCheck(!mimpl->matinuse, PetscObjectComm(pobj), PETSC_ERR_ORDER, "Need to call MatDenseRestoreSubMatrix() first");
249:   if (const auto mimpl_A = mimpl->A) PetscCall(MatBindToCPU(mimpl_A, usehost));
250:   A->boundtocpu = usehost;
251:   PetscCall(PetscStrFreeAllocpy(usehost ? PETSCRANDER48 : PETSCDEVICERAND(), &A->defaultrandtype));
252:   if (!usehost) {
253:     PetscBool iscupm;

255:     PetscCall(PetscObjectTypeCompare(PetscObjectCast(mimpl->cvec), VecMPI_CUPM::VECMPICUPM(), &iscupm));
256:     if (!iscupm) PetscCall(VecDestroy(&mimpl->cvec));
257:     PetscCall(PetscObjectTypeCompare(PetscObjectCast(mimpl->cmat), MATMPIDENSECUPM(), &iscupm));
258:     if (!iscupm) PetscCall(MatDestroy(&mimpl->cmat));
259:   }

261:   MatComposeOp_CUPM(usehost, pobj, "MatDenseGetColumnVec_C", MatDenseGetColumnVec_MPIDense, GetColumnVec<PETSC_MEMORY_ACCESS_READ_WRITE>);
262:   MatComposeOp_CUPM(usehost, pobj, "MatDenseRestoreColumnVec_C", MatDenseRestoreColumnVec_MPIDense, RestoreColumnVec<PETSC_MEMORY_ACCESS_READ_WRITE>);
263:   MatComposeOp_CUPM(usehost, pobj, "MatDenseGetColumnVecRead_C", MatDenseGetColumnVecRead_MPIDense, GetColumnVec<PETSC_MEMORY_ACCESS_READ>);
264:   MatComposeOp_CUPM(usehost, pobj, "MatDenseRestoreColumnVecRead_C", MatDenseRestoreColumnVecRead_MPIDense, RestoreColumnVec<PETSC_MEMORY_ACCESS_READ>);
265:   MatComposeOp_CUPM(usehost, pobj, "MatDenseGetColumnVecWrite_C", MatDenseGetColumnVecWrite_MPIDense, GetColumnVec<PETSC_MEMORY_ACCESS_WRITE>);
266:   MatComposeOp_CUPM(usehost, pobj, "MatDenseRestoreColumnVecWrite_C", MatDenseRestoreColumnVecWrite_MPIDense, RestoreColumnVec<PETSC_MEMORY_ACCESS_WRITE>);

268:   MatSetOp_CUPM(usehost, A, shift, MatShift_MPIDense, Shift);

270:   if (const auto mimpl_cmat = mimpl->cmat) PetscCall(MatBindToCPU(mimpl_cmat, usehost));
271:   PetscFunctionReturn(PETSC_SUCCESS);
272: }

274: template <device::cupm::DeviceType T>
275: inline PetscErrorCode MatDense_MPI_CUPM<T>::Convert_MPIDenseCUPM_MPIDense(Mat M, MatType mtype, MatReuse reuse, Mat *newmat) noexcept
276: {
277:   PetscFunctionBegin;
278:   PetscCall(Convert_Dispatch_</* to host */ true>(M, mtype, reuse, newmat));
279:   PetscFunctionReturn(PETSC_SUCCESS);
280: }

282: template <device::cupm::DeviceType T>
283: inline PetscErrorCode MatDense_MPI_CUPM<T>::Convert_MPIDense_MPIDenseCUPM(Mat M, MatType mtype, MatReuse reuse, Mat *newmat) noexcept
284: {
285:   PetscFunctionBegin;
286:   PetscCall(Convert_Dispatch_</* to host */ false>(M, mtype, reuse, newmat));
287:   PetscFunctionReturn(PETSC_SUCCESS);
288: }

290: // ==========================================================================================

292: template <device::cupm::DeviceType T>
293: template <PetscMemType, PetscMemoryAccessMode access>
294: inline PetscErrorCode MatDense_MPI_CUPM<T>::GetArray(Mat A, PetscScalar **array, PetscDeviceContext dctx) noexcept
295: {
296:   auto &mimplA = MatIMPLCast(A)->A;

298:   PetscFunctionBegin;
299:   if (!mimplA) PetscCall(MatCreateSeqDenseCUPM<T>(PETSC_COMM_SELF, A->rmap->n, A->cmap->N, nullptr, &mimplA, dctx));
300:   PetscCall(MatDenseCUPMGetArray_Private<T, access>(mimplA, array));
301:   PetscFunctionReturn(PETSC_SUCCESS);
302: }

304: template <device::cupm::DeviceType T>
305: template <PetscMemType, PetscMemoryAccessMode access>
306: inline PetscErrorCode MatDense_MPI_CUPM<T>::RestoreArray(Mat A, PetscScalar **array, PetscDeviceContext) noexcept
307: {
308:   PetscFunctionBegin;
309:   PetscCall(MatDenseCUPMRestoreArray_Private<T, access>(MatIMPLCast(A)->A, array));
310:   PetscFunctionReturn(PETSC_SUCCESS);
311: }

313: // ==========================================================================================

315: template <device::cupm::DeviceType T>
316: template <PetscMemoryAccessMode access>
317: inline PetscErrorCode MatDense_MPI_CUPM<T>::GetColumnVec(Mat A, PetscInt col, Vec *v) noexcept
318: {
319:   using namespace vec::cupm;

321:   const auto mimpl   = MatIMPLCast(A);
322:   const auto mimpl_A = mimpl->A;
323:   const auto pobj    = PetscObjectCast(A);
324:   PetscInt   lda;

326:   PetscFunctionBegin;
327:   PetscCheck(!mimpl->vecinuse, PetscObjectComm(pobj), PETSC_ERR_ORDER, "Need to call MatDenseRestoreColumnVec() first");
328:   PetscCheck(!mimpl->matinuse, PetscObjectComm(pobj), PETSC_ERR_ORDER, "Need to call MatDenseRestoreSubMatrix() first");
329:   mimpl->vecinuse = col + 1;

331:   if (!mimpl->cvec) PetscCall(MatDenseCreateColumnVec_Private(A, &mimpl->cvec));

333:   PetscCall(MatDenseGetLDA(mimpl_A, &lda));
334:   PetscCall(MatDenseCUPMGetArray_Private<T, access>(mimpl_A, const_cast<PetscScalar **>(&mimpl->ptrinuse)));
335:   PetscCall(VecCUPMPlaceArrayAsync<T>(mimpl->cvec, mimpl->ptrinuse + static_cast<std::size_t>(col) * static_cast<std::size_t>(lda)));

337:   if (access == PETSC_MEMORY_ACCESS_READ) PetscCall(VecLockReadPush(mimpl->cvec));
338:   *v = mimpl->cvec;
339:   PetscFunctionReturn(PETSC_SUCCESS);
340: }

342: template <device::cupm::DeviceType T>
343: template <PetscMemoryAccessMode access>
344: inline PetscErrorCode MatDense_MPI_CUPM<T>::RestoreColumnVec(Mat A, PetscInt, Vec *v) noexcept
345: {
346:   using namespace vec::cupm;

348:   const auto mimpl = MatIMPLCast(A);
349:   const auto cvec  = mimpl->cvec;

351:   PetscFunctionBegin;
352:   PetscCheck(mimpl->vecinuse, PETSC_COMM_SELF, PETSC_ERR_ORDER, "Need to call MatDenseGetColumnVec() first");
353:   PetscCheck(cvec, PETSC_COMM_SELF, PETSC_ERR_PLIB, "Missing internal column vector");
354:   mimpl->vecinuse = 0;

356:   PetscCall(MatDenseCUPMRestoreArray_Private<T, access>(mimpl->A, const_cast<PetscScalar **>(&mimpl->ptrinuse)));
357:   if (access == PETSC_MEMORY_ACCESS_READ) PetscCall(VecLockReadPop(cvec));
358:   PetscCall(VecCUPMResetArrayAsync<T>(cvec));

360:   if (v) *v = nullptr;
361:   PetscFunctionReturn(PETSC_SUCCESS);
362: }

364: // ==========================================================================================

366: template <device::cupm::DeviceType T>
367: inline PetscErrorCode MatDense_MPI_CUPM<T>::PlaceArray(Mat A, const PetscScalar *array) noexcept
368: {
369:   const auto mimpl = MatIMPLCast(A);

371:   PetscFunctionBegin;
372:   PetscCheck(!mimpl->vecinuse, PetscObjectComm(PetscObjectCast(A)), PETSC_ERR_ORDER, "Need to call MatDenseRestoreColumnVec() first");
373:   PetscCheck(!mimpl->matinuse, PetscObjectComm(PetscObjectCast(A)), PETSC_ERR_ORDER, "Need to call MatDenseRestoreSubMatrix() first");
374:   PetscCall(MatDenseCUPMPlaceArray<T>(mimpl->A, array));
375:   PetscFunctionReturn(PETSC_SUCCESS);
376: }

378: template <device::cupm::DeviceType T>
379: inline PetscErrorCode MatDense_MPI_CUPM<T>::ReplaceArray(Mat A, const PetscScalar *array) noexcept
380: {
381:   const auto mimpl = MatIMPLCast(A);

383:   PetscFunctionBegin;
384:   PetscCheck(!mimpl->vecinuse, PetscObjectComm(PetscObjectCast(A)), PETSC_ERR_ORDER, "Need to call MatDenseRestoreColumnVec() first");
385:   PetscCheck(!mimpl->matinuse, PetscObjectComm(PetscObjectCast(A)), PETSC_ERR_ORDER, "Need to call MatDenseRestoreSubMatrix() first");
386:   PetscCall(MatDenseCUPMReplaceArray<T>(mimpl->A, array));
387:   PetscFunctionReturn(PETSC_SUCCESS);
388: }

390: template <device::cupm::DeviceType T>
391: inline PetscErrorCode MatDense_MPI_CUPM<T>::ResetArray(Mat A) noexcept
392: {
393:   const auto mimpl = MatIMPLCast(A);

395:   PetscFunctionBegin;
396:   PetscCheck(!mimpl->vecinuse, PetscObjectComm(PetscObjectCast(A)), PETSC_ERR_ORDER, "Need to call MatDenseRestoreColumnVec() first");
397:   PetscCheck(!mimpl->matinuse, PetscObjectComm(PetscObjectCast(A)), PETSC_ERR_ORDER, "Need to call MatDenseRestoreSubMatrix() first");
398:   PetscCall(MatDenseCUPMResetArray<T>(mimpl->A));
399:   PetscFunctionReturn(PETSC_SUCCESS);
400: }

402: } // namespace impl

404: namespace
405: {

407: template <device::cupm::DeviceType T>
408: inline PetscErrorCode MatCreateDenseCUPM(MPI_Comm comm, PetscInt n, PetscInt m, PetscInt N, PetscInt M, PetscScalar *data, Mat *A, PetscDeviceContext dctx = nullptr) noexcept
409: {
410:   PetscMPIInt size;

412:   PetscFunctionBegin;
413:   PetscAssertPointer(A, 7);
414:   PetscCallMPI(MPI_Comm_size(comm, &size));
415:   if (size > 1) {
416:     PetscCall(MatCreateMPIDenseCUPM<T>(comm, n, m, N, M, data, A, dctx));
417:   } else {
418:     if (n == PETSC_DECIDE) n = N;
419:     if (m == PETSC_DECIDE) m = M;
420:     // It's OK here if both are PETSC_DECIDE since PetscSplitOwnership() will catch that down
421:     // the line
422:     PetscCall(MatCreateSeqDenseCUPM<T>(comm, n, m, data, A, dctx));
423:   }
424:   PetscFunctionReturn(PETSC_SUCCESS);
425: }

427: } // anonymous namespace

429: } // namespace cupm

431: } // namespace mat

433: } // namespace Petsc