1 2 3 /* 4 Defines the basic matrix operations for the AIJ (compressed row) 5 matrix storage format. 6 */ 7 8 #include <petscconf.h> 9 #define PETSC_SKIP_IMMINTRIN_H_CUDAWORKAROUND 1 10 #include <../src/mat/impls/aij/seq/aij.h> /*I "petscmat.h" I*/ 11 #include <petscbt.h> 12 #include <../src/vec/vec/impls/dvecimpl.h> 13 #include <petsc/private/vecimpl.h> 14 15 #include <../src/mat/impls/aij/seq/seqviennacl/viennaclmatimpl.h> 16 17 18 #include <algorithm> 19 #include <vector> 20 #include <string> 21 22 #include "viennacl/linalg/prod.hpp" 23 24 PETSC_INTERN PetscErrorCode MatConvert_SeqAIJ_SeqAIJViennaCL(Mat A, MatType type, MatReuse reuse, Mat *newmat); 25 PETSC_INTERN PetscErrorCode MatGetFactor_seqaij_petsc(Mat,MatFactorType,Mat*); 26 27 28 PetscErrorCode MatViennaCLCopyToGPU(Mat A) 29 { 30 Mat_SeqAIJViennaCL *viennaclstruct = (Mat_SeqAIJViennaCL*)A->spptr; 31 Mat_SeqAIJ *a = (Mat_SeqAIJ*)A->data; 32 PetscErrorCode ierr; 33 34 PetscFunctionBegin; 35 if (A->rmap->n > 0 && A->cmap->n > 0 && a->nz) { //some OpenCL SDKs have issues with buffers of size 0 36 if (A->offloadmask == PETSC_OFFLOAD_UNALLOCATED || A->offloadmask == PETSC_OFFLOAD_CPU) { 37 ierr = PetscLogEventBegin(MAT_ViennaCLCopyToGPU,A,0,0,0);CHKERRQ(ierr); 38 39 try { 40 if (a->compressedrow.use) { 41 if (!viennaclstruct->compressed_mat) viennaclstruct->compressed_mat = new ViennaCLCompressedAIJMatrix(); 42 43 // Since PetscInt is different from cl_uint, we have to convert: 44 viennacl::backend::mem_handle dummy; 45 46 viennacl::backend::typesafe_host_array<unsigned int> row_buffer; row_buffer.raw_resize(dummy, a->compressedrow.nrows+1); 47 for (PetscInt i=0; i<=a->compressedrow.nrows; ++i) 48 row_buffer.set(i, (a->compressedrow.i)[i]); 49 50 viennacl::backend::typesafe_host_array<unsigned int> row_indices; row_indices.raw_resize(dummy, a->compressedrow.nrows); 51 for (PetscInt i=0; i<a->compressedrow.nrows; ++i) 52 row_indices.set(i, (a->compressedrow.rindex)[i]); 53 54 viennacl::backend::typesafe_host_array<unsigned int> col_buffer; col_buffer.raw_resize(dummy, a->nz); 55 for (PetscInt i=0; i<a->nz; ++i) 56 col_buffer.set(i, (a->j)[i]); 57 58 viennaclstruct->compressed_mat->set(row_buffer.get(), row_indices.get(), col_buffer.get(), a->a, A->rmap->n, A->cmap->n, a->compressedrow.nrows, a->nz); 59 ierr = PetscLogCpuToGpu(((2*a->compressedrow.nrows)+1+a->nz)*sizeof(PetscInt) + (a->nz)*sizeof(PetscScalar));CHKERRQ(ierr); 60 } else { 61 if (!viennaclstruct->mat) viennaclstruct->mat = new ViennaCLAIJMatrix(); 62 63 // Since PetscInt is in general different from cl_uint, we have to convert: 64 viennacl::backend::mem_handle dummy; 65 66 viennacl::backend::typesafe_host_array<unsigned int> row_buffer; row_buffer.raw_resize(dummy, A->rmap->n+1); 67 for (PetscInt i=0; i<=A->rmap->n; ++i) 68 row_buffer.set(i, (a->i)[i]); 69 70 viennacl::backend::typesafe_host_array<unsigned int> col_buffer; col_buffer.raw_resize(dummy, a->nz); 71 for (PetscInt i=0; i<a->nz; ++i) 72 col_buffer.set(i, (a->j)[i]); 73 74 viennaclstruct->mat->set(row_buffer.get(), col_buffer.get(), a->a, A->rmap->n, A->cmap->n, a->nz); 75 ierr = PetscLogCpuToGpu(((A->rmap->n+1)+a->nz)*sizeof(PetscInt)+(a->nz)*sizeof(PetscScalar));CHKERRQ(ierr); 76 } 77 ViennaCLWaitForGPU(); 78 } catch(std::exception const & ex) { 79 SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_LIB,"ViennaCL error: %s", ex.what()); 80 } 81 82 // Create temporary vector for v += A*x: 83 if (viennaclstruct->tempvec) { 84 if (viennaclstruct->tempvec->size() != static_cast<std::size_t>(A->rmap->n)) { 85 delete (ViennaCLVector*)viennaclstruct->tempvec; 86 viennaclstruct->tempvec = new ViennaCLVector(A->rmap->n); 87 } else { 88 viennaclstruct->tempvec->clear(); 89 } 90 } else { 91 viennaclstruct->tempvec = new ViennaCLVector(A->rmap->n); 92 } 93 94 A->offloadmask = PETSC_OFFLOAD_BOTH; 95 96 ierr = PetscLogEventEnd(MAT_ViennaCLCopyToGPU,A,0,0,0);CHKERRQ(ierr); 97 } 98 } 99 PetscFunctionReturn(0); 100 } 101 102 PetscErrorCode MatViennaCLCopyFromGPU(Mat A, const ViennaCLAIJMatrix *Agpu) 103 { 104 Mat_SeqAIJViennaCL *viennaclstruct = (Mat_SeqAIJViennaCL*)A->spptr; 105 Mat_SeqAIJ *a = (Mat_SeqAIJ*)A->data; 106 PetscInt m = A->rmap->n; 107 PetscErrorCode ierr; 108 109 PetscFunctionBegin; 110 if (A->offloadmask == PETSC_OFFLOAD_BOTH) PetscFunctionReturn(0); 111 if (A->offloadmask == PETSC_OFFLOAD_UNALLOCATED && Agpu) { 112 try { 113 if (a->compressedrow.use) SETERRQ(PETSC_COMM_WORLD, PETSC_ERR_ARG_WRONG, "ViennaCL: Cannot handle row compression for GPU matrices"); 114 else { 115 116 if ((PetscInt)Agpu->size1() != m) SETERRQ2(PETSC_COMM_WORLD, PETSC_ERR_ARG_SIZ, "GPU matrix has %d rows, should be %d", Agpu->size1(), m); 117 a->nz = Agpu->nnz(); 118 a->maxnz = a->nz; /* Since we allocate exactly the right amount */ 119 A->preallocated = PETSC_TRUE; 120 if (a->singlemalloc) { 121 if (a->a) {ierr = PetscFree3(a->a,a->j,a->i);CHKERRQ(ierr);} 122 } else { 123 if (a->i) {ierr = PetscFree(a->i);CHKERRQ(ierr);} 124 if (a->j) {ierr = PetscFree(a->j);CHKERRQ(ierr);} 125 if (a->a) {ierr = PetscFree(a->a);CHKERRQ(ierr);} 126 } 127 ierr = PetscMalloc3(a->nz,&a->a,a->nz,&a->j,m+1,&a->i);CHKERRQ(ierr); 128 ierr = PetscLogObjectMemory((PetscObject)A, a->nz*(sizeof(PetscScalar)+sizeof(PetscInt))+(m+1)*sizeof(PetscInt));CHKERRQ(ierr); 129 130 a->singlemalloc = PETSC_TRUE; 131 132 /* Setup row lengths */ 133 ierr = PetscFree(a->imax);CHKERRQ(ierr); 134 ierr = PetscFree(a->ilen);CHKERRQ(ierr); 135 ierr = PetscMalloc1(m,&a->imax);CHKERRQ(ierr); 136 ierr = PetscMalloc1(m,&a->ilen);CHKERRQ(ierr); 137 ierr = PetscLogObjectMemory((PetscObject)A, 2*m*sizeof(PetscInt));CHKERRQ(ierr); 138 139 /* Copy data back from GPU */ 140 viennacl::backend::typesafe_host_array<unsigned int> row_buffer; row_buffer.raw_resize(Agpu->handle1(), Agpu->size1() + 1); 141 142 // copy row array 143 viennacl::backend::memory_read(Agpu->handle1(), 0, row_buffer.raw_size(), row_buffer.get()); 144 (a->i)[0] = row_buffer[0]; 145 for (PetscInt i = 0; i < (PetscInt)Agpu->size1(); ++i) { 146 (a->i)[i+1] = row_buffer[i+1]; 147 a->imax[i] = a->ilen[i] = a->i[i+1] - a->i[i]; //Set imax[] and ilen[] arrays at the same time as i[] for better cache reuse 148 } 149 150 // copy column indices 151 viennacl::backend::typesafe_host_array<unsigned int> col_buffer; col_buffer.raw_resize(Agpu->handle2(), Agpu->nnz()); 152 viennacl::backend::memory_read(Agpu->handle2(), 0, col_buffer.raw_size(), col_buffer.get()); 153 for (PetscInt i=0; i < (PetscInt)Agpu->nnz(); ++i) 154 (a->j)[i] = col_buffer[i]; 155 156 // copy nonzero entries directly to destination (no conversion required) 157 viennacl::backend::memory_read(Agpu->handle(), 0, sizeof(PetscScalar)*Agpu->nnz(), a->a); 158 159 ierr = PetscLogGpuToCpu(row_buffer.raw_size()+col_buffer.raw_size()+(Agpu->nnz()*sizeof(PetscScalar)));CHKERRQ(ierr); 160 ViennaCLWaitForGPU(); 161 /* TODO: Once a->diag is moved out of MatAssemblyEnd(), invalidate it here. */ 162 } 163 } catch(std::exception const & ex) { 164 SETERRQ1(PETSC_COMM_SELF, PETSC_ERR_LIB, "ViennaCL error: %s", ex.what()); 165 } 166 } else if (A->offloadmask == PETSC_OFFLOAD_UNALLOCATED) { 167 PetscFunctionReturn(0); 168 } else { 169 if (!Agpu && A->offloadmask != PETSC_OFFLOAD_GPU) PetscFunctionReturn(0); 170 171 if (a->compressedrow.use) SETERRQ(PETSC_COMM_WORLD, PETSC_ERR_ARG_WRONG, "ViennaCL: Cannot handle row compression for GPU matrices"); 172 if (!Agpu) { 173 viennacl::backend::memory_read(viennaclstruct->mat->handle(), 0, sizeof(PetscScalar)*viennaclstruct->mat->nnz(), a->a); 174 } else { 175 viennacl::backend::memory_read(Agpu->handle(), 0, sizeof(PetscScalar)*Agpu->nnz(), a->a); 176 } 177 } 178 A->offloadmask = PETSC_OFFLOAD_BOTH; 179 /* This assembly prevents resetting the flag to PETSC_OFFLOAD_CPU and recopying */ 180 ierr = MatAssemblyBegin(A, MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 181 ierr = MatAssemblyEnd(A, MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 182 PetscFunctionReturn(0); 183 } 184 185 PetscErrorCode MatMult_SeqAIJViennaCL(Mat A,Vec xx,Vec yy) 186 { 187 Mat_SeqAIJ *a = (Mat_SeqAIJ*)A->data; 188 PetscErrorCode ierr; 189 Mat_SeqAIJViennaCL *viennaclstruct = (Mat_SeqAIJViennaCL*)A->spptr; 190 const ViennaCLVector *xgpu=NULL; 191 ViennaCLVector *ygpu=NULL; 192 193 PetscFunctionBegin; 194 /* The line below is necessary due to the operations that modify the matrix on the CPU (axpy, scale, etc) */ 195 ierr = MatViennaCLCopyToGPU(A);CHKERRQ(ierr); 196 if (A->rmap->n > 0 && A->cmap->n > 0 && a->nz) { 197 ierr = VecViennaCLGetArrayRead(xx,&xgpu);CHKERRQ(ierr); 198 ierr = VecViennaCLGetArrayWrite(yy,&ygpu);CHKERRQ(ierr); 199 ierr = PetscLogGpuTimeBegin();CHKERRQ(ierr); 200 try { 201 if (a->compressedrow.use) { 202 *ygpu = viennacl::linalg::prod(*viennaclstruct->compressed_mat, *xgpu); 203 } else { 204 *ygpu = viennacl::linalg::prod(*viennaclstruct->mat,*xgpu); 205 } 206 ViennaCLWaitForGPU(); 207 } catch (std::exception const & ex) { 208 SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_LIB,"ViennaCL error: %s", ex.what()); 209 } 210 ierr = PetscLogGpuTimeEnd();CHKERRQ(ierr); 211 ierr = VecViennaCLRestoreArrayRead(xx,&xgpu);CHKERRQ(ierr); 212 ierr = VecViennaCLRestoreArrayWrite(yy,&ygpu);CHKERRQ(ierr); 213 ierr = PetscLogGpuFlops(2.0*a->nz - a->nonzerorowcnt);CHKERRQ(ierr); 214 } else { 215 ierr = VecSet(yy,0);CHKERRQ(ierr); 216 } 217 PetscFunctionReturn(0); 218 } 219 220 PetscErrorCode MatMultAdd_SeqAIJViennaCL(Mat A,Vec xx,Vec yy,Vec zz) 221 { 222 Mat_SeqAIJ *a = (Mat_SeqAIJ*)A->data; 223 PetscErrorCode ierr; 224 Mat_SeqAIJViennaCL *viennaclstruct = (Mat_SeqAIJViennaCL*)A->spptr; 225 const ViennaCLVector *xgpu=NULL,*ygpu=NULL; 226 ViennaCLVector *zgpu=NULL; 227 228 PetscFunctionBegin; 229 /* The line below is necessary due to the operations that modify the matrix on the CPU (axpy, scale, etc) */ 230 ierr = MatViennaCLCopyToGPU(A);CHKERRQ(ierr); 231 if (A->rmap->n > 0 && A->cmap->n > 0 && a->nz) { 232 try { 233 ierr = VecViennaCLGetArrayRead(xx,&xgpu);CHKERRQ(ierr); 234 ierr = VecViennaCLGetArrayRead(yy,&ygpu);CHKERRQ(ierr); 235 ierr = VecViennaCLGetArrayWrite(zz,&zgpu);CHKERRQ(ierr); 236 ierr = PetscLogGpuTimeBegin();CHKERRQ(ierr); 237 if (a->compressedrow.use) *viennaclstruct->tempvec = viennacl::linalg::prod(*viennaclstruct->compressed_mat, *xgpu); 238 else *viennaclstruct->tempvec = viennacl::linalg::prod(*viennaclstruct->mat, *xgpu); 239 if (zz != yy) *zgpu = *ygpu + *viennaclstruct->tempvec; 240 else *zgpu += *viennaclstruct->tempvec; 241 ViennaCLWaitForGPU(); 242 ierr = PetscLogGpuTimeEnd();CHKERRQ(ierr); 243 ierr = VecViennaCLRestoreArrayRead(xx,&xgpu);CHKERRQ(ierr); 244 ierr = VecViennaCLRestoreArrayRead(yy,&ygpu);CHKERRQ(ierr); 245 ierr = VecViennaCLRestoreArrayWrite(zz,&zgpu);CHKERRQ(ierr); 246 247 } catch(std::exception const & ex) { 248 SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_LIB,"ViennaCL error: %s", ex.what()); 249 } 250 ierr = PetscLogGpuFlops(2.0*a->nz);CHKERRQ(ierr); 251 } else { 252 ierr = VecCopy(yy,zz);CHKERRQ(ierr); 253 } 254 PetscFunctionReturn(0); 255 } 256 257 PetscErrorCode MatAssemblyEnd_SeqAIJViennaCL(Mat A,MatAssemblyType mode) 258 { 259 PetscErrorCode ierr; 260 261 PetscFunctionBegin; 262 ierr = MatAssemblyEnd_SeqAIJ(A,mode);CHKERRQ(ierr); 263 if (mode == MAT_FLUSH_ASSEMBLY) PetscFunctionReturn(0); 264 if (!A->boundtocpu) { 265 ierr = MatViennaCLCopyToGPU(A);CHKERRQ(ierr); 266 } 267 PetscFunctionReturn(0); 268 } 269 270 /* --------------------------------------------------------------------------------*/ 271 /*@C 272 MatCreateSeqAIJViennaCL - Creates a sparse matrix in AIJ (compressed row) format 273 (the default parallel PETSc format). This matrix will ultimately be pushed down 274 to GPUs and use the ViennaCL library for calculations. For good matrix 275 assembly performance the user should preallocate the matrix storage by setting 276 the parameter nz (or the array nnz). By setting these parameters accurately, 277 performance during matrix assembly can be increased substantially. 278 279 280 Collective 281 282 Input Parameters: 283 + comm - MPI communicator, set to PETSC_COMM_SELF 284 . m - number of rows 285 . n - number of columns 286 . nz - number of nonzeros per row (same for all rows) 287 - nnz - array containing the number of nonzeros in the various rows 288 (possibly different for each row) or NULL 289 290 Output Parameter: 291 . A - the matrix 292 293 It is recommended that one use the MatCreate(), MatSetType() and/or MatSetFromOptions(), 294 MatXXXXSetPreallocation() paradigm instead of this routine directly. 295 [MatXXXXSetPreallocation() is, for example, MatSeqAIJSetPreallocation] 296 297 Notes: 298 If nnz is given then nz is ignored 299 300 The AIJ format (also called the Yale sparse matrix format or 301 compressed row storage), is fully compatible with standard Fortran 77 302 storage. That is, the stored row and column indices can begin at 303 either one (as in Fortran) or zero. See the users' manual for details. 304 305 Specify the preallocated storage with either nz or nnz (not both). 306 Set nz=PETSC_DEFAULT and nnz=NULL for PETSc to control dynamic memory 307 allocation. For large problems you MUST preallocate memory or you 308 will get TERRIBLE performance, see the users' manual chapter on matrices. 309 310 Level: intermediate 311 312 .seealso: MatCreate(), MatCreateAIJ(), MatCreateAIJCUSPARSE(), MatSetValues(), MatSeqAIJSetColumnIndices(), MatCreateSeqAIJWithArrays(), MatCreateAIJ() 313 314 @*/ 315 PetscErrorCode MatCreateSeqAIJViennaCL(MPI_Comm comm,PetscInt m,PetscInt n,PetscInt nz,const PetscInt nnz[],Mat *A) 316 { 317 PetscErrorCode ierr; 318 319 PetscFunctionBegin; 320 ierr = MatCreate(comm,A);CHKERRQ(ierr); 321 ierr = MatSetSizes(*A,m,n,m,n);CHKERRQ(ierr); 322 ierr = MatSetType(*A,MATSEQAIJVIENNACL);CHKERRQ(ierr); 323 ierr = MatSeqAIJSetPreallocation_SeqAIJ(*A,nz,(PetscInt*)nnz);CHKERRQ(ierr); 324 PetscFunctionReturn(0); 325 } 326 327 328 PetscErrorCode MatDestroy_SeqAIJViennaCL(Mat A) 329 { 330 PetscErrorCode ierr; 331 Mat_SeqAIJViennaCL *viennaclcontainer = (Mat_SeqAIJViennaCL*)A->spptr; 332 333 PetscFunctionBegin; 334 try { 335 if (viennaclcontainer) { 336 delete viennaclcontainer->tempvec; 337 delete viennaclcontainer->mat; 338 delete viennaclcontainer->compressed_mat; 339 delete viennaclcontainer; 340 } 341 A->offloadmask = PETSC_OFFLOAD_UNALLOCATED; 342 } catch(std::exception const & ex) { 343 SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_LIB,"ViennaCL error: %s", ex.what()); 344 } 345 346 ierr = PetscObjectComposeFunction((PetscObject)A,"MatConvert_seqaij_seqaijviennacl_C",NULL);CHKERRQ(ierr); 347 348 /* this next line is because MatDestroy tries to PetscFree spptr if it is not zero, and PetscFree only works if the memory was allocated with PetscNew or PetscMalloc, which don't call the constructor */ 349 A->spptr = 0; 350 ierr = MatDestroy_SeqAIJ(A);CHKERRQ(ierr); 351 PetscFunctionReturn(0); 352 } 353 354 355 PETSC_EXTERN PetscErrorCode MatCreate_SeqAIJViennaCL(Mat B) 356 { 357 PetscErrorCode ierr; 358 359 PetscFunctionBegin; 360 ierr = MatCreate_SeqAIJ(B);CHKERRQ(ierr); 361 ierr = MatConvert_SeqAIJ_SeqAIJViennaCL(B,MATSEQAIJVIENNACL,MAT_INPLACE_MATRIX,&B); 362 PetscFunctionReturn(0); 363 } 364 365 static PetscErrorCode MatBindToCPU_SeqAIJViennaCL(Mat,PetscBool); 366 static PetscErrorCode MatDuplicate_SeqAIJViennaCL(Mat A,MatDuplicateOption cpvalues,Mat *B) 367 { 368 PetscErrorCode ierr; 369 Mat C; 370 371 PetscFunctionBegin; 372 ierr = MatDuplicate_SeqAIJ(A,cpvalues,B);CHKERRQ(ierr); 373 C = *B; 374 375 ierr = MatBindToCPU_SeqAIJViennaCL(A,PETSC_FALSE);CHKERRQ(ierr); 376 C->ops->bindtocpu = MatBindToCPU_SeqAIJViennaCL; 377 378 C->spptr = new Mat_SeqAIJViennaCL(); 379 ((Mat_SeqAIJViennaCL*)C->spptr)->tempvec = NULL; 380 ((Mat_SeqAIJViennaCL*)C->spptr)->mat = NULL; 381 ((Mat_SeqAIJViennaCL*)C->spptr)->compressed_mat = NULL; 382 383 ierr = PetscObjectChangeTypeName((PetscObject)C,MATSEQAIJVIENNACL);CHKERRQ(ierr); 384 385 C->offloadmask = PETSC_OFFLOAD_UNALLOCATED; 386 387 /* If the source matrix is already assembled, copy the destination matrix to the GPU */ 388 if (C->assembled) { 389 ierr = MatViennaCLCopyToGPU(C);CHKERRQ(ierr); 390 } 391 392 PetscFunctionReturn(0); 393 } 394 395 static PetscErrorCode MatSeqAIJGetArray_SeqAIJViennaCL(Mat A,PetscScalar *array[]) 396 { 397 Mat_SeqAIJ *a = (Mat_SeqAIJ*)A->data; 398 PetscErrorCode ierr; 399 400 PetscFunctionBegin; 401 ierr = MatViennaCLCopyFromGPU(A,(const ViennaCLAIJMatrix *)NULL);CHKERRQ(ierr); 402 *array = a->a; 403 A->offloadmask = PETSC_OFFLOAD_CPU; 404 PetscFunctionReturn(0); 405 } 406 407 408 static PetscErrorCode MatSeqAIJRestoreArray_SeqAIJViennaCL(Mat A,PetscScalar *array[]) 409 { 410 PetscFunctionBegin; 411 *array = NULL; 412 PetscFunctionReturn(0); 413 } 414 415 static PetscErrorCode MatBindToCPU_SeqAIJViennaCL(Mat A,PetscBool flg) 416 { 417 PetscErrorCode ierr; 418 419 PetscFunctionBegin; 420 A->boundtocpu = flg; 421 if (flg) { 422 /* make sure we have an up-to-date copy on the CPU */ 423 ierr = MatViennaCLCopyFromGPU(A,(const ViennaCLAIJMatrix *)NULL);CHKERRQ(ierr); 424 ierr = PetscObjectComposeFunction((PetscObject)A,"MatSeqAIJGetArray_C",MatSeqAIJGetArray_SeqAIJ);CHKERRQ(ierr); 425 ierr = PetscObjectComposeFunction((PetscObject)A,"MatSeqAIJRestoreArray_C",MatSeqAIJRestoreArray_SeqAIJ);CHKERRQ(ierr); 426 427 A->ops->mult = MatMult_SeqAIJ; 428 A->ops->multadd = MatMultAdd_SeqAIJ; 429 A->ops->assemblyend = MatAssemblyEnd_SeqAIJ; 430 A->ops->duplicate = MatDuplicate_SeqAIJ; 431 } else { 432 ierr = PetscObjectComposeFunction((PetscObject)A,"MatSeqAIJGetArray_C",MatSeqAIJGetArray_SeqAIJViennaCL);CHKERRQ(ierr); 433 ierr = PetscObjectComposeFunction((PetscObject)A,"MatSeqAIJRestoreArray_C",MatSeqAIJRestoreArray_SeqAIJViennaCL);CHKERRQ(ierr); 434 435 A->ops->mult = MatMult_SeqAIJViennaCL; 436 A->ops->multadd = MatMultAdd_SeqAIJViennaCL; 437 A->ops->assemblyend = MatAssemblyEnd_SeqAIJViennaCL; 438 A->ops->destroy = MatDestroy_SeqAIJViennaCL; 439 A->ops->duplicate = MatDuplicate_SeqAIJViennaCL; 440 } 441 PetscFunctionReturn(0); 442 } 443 444 PETSC_INTERN PetscErrorCode MatConvert_SeqAIJ_SeqAIJViennaCL(Mat A,MatType type,MatReuse reuse,Mat *newmat) 445 { 446 PetscErrorCode ierr; 447 Mat B; 448 Mat_SeqAIJ *aij; 449 450 PetscFunctionBegin; 451 452 if (reuse == MAT_REUSE_MATRIX) SETERRQ(PETSC_COMM_WORLD,PETSC_ERR_SUP,"MAT_REUSE_MATRIX is not supported. Consider using MAT_INPLACE_MATRIX instead"); 453 454 if (reuse == MAT_INITIAL_MATRIX) { 455 ierr = MatDuplicate(A,MAT_COPY_VALUES,newmat);CHKERRQ(ierr); 456 } 457 458 B = *newmat; 459 460 aij = (Mat_SeqAIJ*)B->data; 461 aij->inode.use = PETSC_FALSE; 462 463 B->spptr = new Mat_SeqAIJViennaCL(); 464 465 ((Mat_SeqAIJViennaCL*)B->spptr)->tempvec = NULL; 466 ((Mat_SeqAIJViennaCL*)B->spptr)->mat = NULL; 467 ((Mat_SeqAIJViennaCL*)B->spptr)->compressed_mat = NULL; 468 469 ierr = MatBindToCPU_SeqAIJViennaCL(A,PETSC_FALSE);CHKERRQ(ierr); 470 A->ops->bindtocpu = MatBindToCPU_SeqAIJViennaCL; 471 472 ierr = PetscObjectChangeTypeName((PetscObject)B,MATSEQAIJVIENNACL);CHKERRQ(ierr); 473 ierr = PetscFree(B->defaultvectype);CHKERRQ(ierr); 474 ierr = PetscStrallocpy(VECVIENNACL,&B->defaultvectype);CHKERRQ(ierr); 475 476 ierr = PetscObjectComposeFunction((PetscObject)A,"MatConvert_seqaij_seqaijviennacl_C",MatConvert_SeqAIJ_SeqAIJViennaCL);CHKERRQ(ierr); 477 478 B->offloadmask = PETSC_OFFLOAD_UNALLOCATED; 479 480 /* If the source matrix is already assembled, copy the destination matrix to the GPU */ 481 if (B->assembled) { 482 ierr = MatViennaCLCopyToGPU(B);CHKERRQ(ierr); 483 } 484 485 PetscFunctionReturn(0); 486 } 487 488 489 /*MC 490 MATSEQAIJVIENNACL - MATAIJVIENNACL = "aijviennacl" = "seqaijviennacl" - A matrix type to be used for sparse matrices. 491 492 A matrix type type whose data resides on GPUs. These matrices are in CSR format by 493 default. All matrix calculations are performed using the ViennaCL library. 494 495 Options Database Keys: 496 + -mat_type aijviennacl - sets the matrix type to "seqaijviennacl" during a call to MatSetFromOptions() 497 . -mat_viennacl_storage_format csr - sets the storage format of matrices for MatMult during a call to MatSetFromOptions(). 498 - -mat_viennacl_mult_storage_format csr - sets the storage format of matrices for MatMult during a call to MatSetFromOptions(). 499 500 Level: beginner 501 502 .seealso: MatCreateSeqAIJViennaCL(), MATAIJVIENNACL, MatCreateAIJViennaCL() 503 M*/ 504 505 506 PETSC_EXTERN PetscErrorCode MatSolverTypeRegister_ViennaCL(void) 507 { 508 PetscErrorCode ierr; 509 510 PetscFunctionBegin; 511 ierr = MatSolverTypeRegister(MATSOLVERPETSC, MATSEQAIJVIENNACL, MAT_FACTOR_LU,MatGetFactor_seqaij_petsc);CHKERRQ(ierr); 512 ierr = MatSolverTypeRegister(MATSOLVERPETSC, MATSEQAIJVIENNACL, MAT_FACTOR_CHOLESKY,MatGetFactor_seqaij_petsc);CHKERRQ(ierr); 513 ierr = MatSolverTypeRegister(MATSOLVERPETSC, MATSEQAIJVIENNACL, MAT_FACTOR_ILU,MatGetFactor_seqaij_petsc);CHKERRQ(ierr); 514 ierr = MatSolverTypeRegister(MATSOLVERPETSC, MATSEQAIJVIENNACL, MAT_FACTOR_ICC,MatGetFactor_seqaij_petsc);CHKERRQ(ierr); 515 PetscFunctionReturn(0); 516 } 517