1 #include <../src/mat/impls/baij/mpi/mpibaij.h> /*I "petscmat.h" I*/ 2 #include <../src/mat/impls/sbaij/mpi/mpisbaij.h> 3 #include <../src/mat/impls/sbaij/seq/sbaij.h> 4 #include <petscblaslapack.h> 5 6 PetscErrorCode MatDestroy_MPISBAIJ(Mat mat) 7 { 8 Mat_MPISBAIJ *baij = (Mat_MPISBAIJ *)mat->data; 9 10 PetscFunctionBegin; 11 #if defined(PETSC_USE_LOG) 12 PetscCall(PetscLogObjectState((PetscObject)mat, "Rows=%" PetscInt_FMT ",Cols=%" PetscInt_FMT, mat->rmap->N, mat->cmap->N)); 13 #endif 14 PetscCall(MatStashDestroy_Private(&mat->stash)); 15 PetscCall(MatStashDestroy_Private(&mat->bstash)); 16 PetscCall(MatDestroy(&baij->A)); 17 PetscCall(MatDestroy(&baij->B)); 18 #if defined(PETSC_USE_CTABLE) 19 PetscCall(PetscHMapIDestroy(&baij->colmap)); 20 #else 21 PetscCall(PetscFree(baij->colmap)); 22 #endif 23 PetscCall(PetscFree(baij->garray)); 24 PetscCall(VecDestroy(&baij->lvec)); 25 PetscCall(VecScatterDestroy(&baij->Mvctx)); 26 PetscCall(VecDestroy(&baij->slvec0)); 27 PetscCall(VecDestroy(&baij->slvec0b)); 28 PetscCall(VecDestroy(&baij->slvec1)); 29 PetscCall(VecDestroy(&baij->slvec1a)); 30 PetscCall(VecDestroy(&baij->slvec1b)); 31 PetscCall(VecScatterDestroy(&baij->sMvctx)); 32 PetscCall(PetscFree2(baij->rowvalues, baij->rowindices)); 33 PetscCall(PetscFree(baij->barray)); 34 PetscCall(PetscFree(baij->hd)); 35 PetscCall(VecDestroy(&baij->diag)); 36 PetscCall(VecDestroy(&baij->bb1)); 37 PetscCall(VecDestroy(&baij->xx1)); 38 #if defined(PETSC_USE_REAL_MAT_SINGLE) 39 PetscCall(PetscFree(baij->setvaluescopy)); 40 #endif 41 PetscCall(PetscFree(baij->in_loc)); 42 PetscCall(PetscFree(baij->v_loc)); 43 PetscCall(PetscFree(baij->rangebs)); 44 PetscCall(PetscFree(mat->data)); 45 46 PetscCall(PetscObjectChangeTypeName((PetscObject)mat, NULL)); 47 PetscCall(PetscObjectComposeFunction((PetscObject)mat, "MatStoreValues_C", NULL)); 48 PetscCall(PetscObjectComposeFunction((PetscObject)mat, "MatRetrieveValues_C", NULL)); 49 PetscCall(PetscObjectComposeFunction((PetscObject)mat, "MatMPISBAIJSetPreallocation_C", NULL)); 50 PetscCall(PetscObjectComposeFunction((PetscObject)mat, "MatMPISBAIJSetPreallocationCSR_C", NULL)); 51 #if defined(PETSC_HAVE_ELEMENTAL) 52 PetscCall(PetscObjectComposeFunction((PetscObject)mat, "MatConvert_mpisbaij_elemental_C", NULL)); 53 #endif 54 #if defined(PETSC_HAVE_SCALAPACK) 55 PetscCall(PetscObjectComposeFunction((PetscObject)mat, "MatConvert_mpisbaij_scalapack_C", NULL)); 56 #endif 57 PetscCall(PetscObjectComposeFunction((PetscObject)mat, "MatConvert_mpisbaij_mpiaij_C", NULL)); 58 PetscCall(PetscObjectComposeFunction((PetscObject)mat, "MatConvert_mpisbaij_mpibaij_C", NULL)); 59 PetscFunctionReturn(PETSC_SUCCESS); 60 } 61 62 /* defines MatSetValues_MPI_Hash(), MatAssemblyBegin_MPI_Hash(), MatAssemblyEnd_MPI_Hash(), MatSetUp_MPI_Hash() */ 63 #define TYPE SBAIJ 64 #define TYPE_SBAIJ 65 #include "../src/mat/impls/aij/mpi/mpihashmat.h" 66 #undef TYPE 67 #undef TYPE_SBAIJ 68 69 #if defined(PETSC_HAVE_ELEMENTAL) 70 PETSC_INTERN PetscErrorCode MatConvert_MPISBAIJ_Elemental(Mat, MatType, MatReuse, Mat *); 71 #endif 72 #if defined(PETSC_HAVE_SCALAPACK) 73 PETSC_INTERN PetscErrorCode MatConvert_SBAIJ_ScaLAPACK(Mat, MatType, MatReuse, Mat *); 74 #endif 75 76 /* This could be moved to matimpl.h */ 77 static PetscErrorCode MatPreallocateWithMats_Private(Mat B, PetscInt nm, Mat X[], PetscBool symm[], PetscBool fill) 78 { 79 Mat preallocator; 80 PetscInt r, rstart, rend; 81 PetscInt bs, i, m, n, M, N; 82 PetscBool cong = PETSC_TRUE; 83 84 PetscFunctionBegin; 85 PetscValidHeaderSpecific(B, MAT_CLASSID, 1); 86 PetscValidLogicalCollectiveInt(B, nm, 2); 87 for (i = 0; i < nm; i++) { 88 PetscValidHeaderSpecific(X[i], MAT_CLASSID, 3); 89 PetscCall(PetscLayoutCompare(B->rmap, X[i]->rmap, &cong)); 90 PetscCheck(cong, PetscObjectComm((PetscObject)B), PETSC_ERR_SUP, "Not for different layouts"); 91 } 92 PetscValidLogicalCollectiveBool(B, fill, 5); 93 PetscCall(MatGetBlockSize(B, &bs)); 94 PetscCall(MatGetSize(B, &M, &N)); 95 PetscCall(MatGetLocalSize(B, &m, &n)); 96 PetscCall(MatCreate(PetscObjectComm((PetscObject)B), &preallocator)); 97 PetscCall(MatSetType(preallocator, MATPREALLOCATOR)); 98 PetscCall(MatSetBlockSize(preallocator, bs)); 99 PetscCall(MatSetSizes(preallocator, m, n, M, N)); 100 PetscCall(MatSetUp(preallocator)); 101 PetscCall(MatGetOwnershipRange(preallocator, &rstart, &rend)); 102 for (r = rstart; r < rend; ++r) { 103 PetscInt ncols; 104 const PetscInt *row; 105 const PetscScalar *vals; 106 107 for (i = 0; i < nm; i++) { 108 PetscCall(MatGetRow(X[i], r, &ncols, &row, &vals)); 109 PetscCall(MatSetValues(preallocator, 1, &r, ncols, row, vals, INSERT_VALUES)); 110 if (symm && symm[i]) PetscCall(MatSetValues(preallocator, ncols, row, 1, &r, vals, INSERT_VALUES)); 111 PetscCall(MatRestoreRow(X[i], r, &ncols, &row, &vals)); 112 } 113 } 114 PetscCall(MatAssemblyBegin(preallocator, MAT_FINAL_ASSEMBLY)); 115 PetscCall(MatAssemblyEnd(preallocator, MAT_FINAL_ASSEMBLY)); 116 PetscCall(MatPreallocatorPreallocate(preallocator, fill, B)); 117 PetscCall(MatDestroy(&preallocator)); 118 PetscFunctionReturn(PETSC_SUCCESS); 119 } 120 121 PETSC_INTERN PetscErrorCode MatConvert_MPISBAIJ_Basic(Mat A, MatType newtype, MatReuse reuse, Mat *newmat) 122 { 123 Mat B; 124 PetscInt r; 125 126 PetscFunctionBegin; 127 if (reuse != MAT_REUSE_MATRIX) { 128 PetscBool symm = PETSC_TRUE, isdense; 129 PetscInt bs; 130 131 PetscCall(MatCreate(PetscObjectComm((PetscObject)A), &B)); 132 PetscCall(MatSetSizes(B, A->rmap->n, A->cmap->n, A->rmap->N, A->cmap->N)); 133 PetscCall(MatSetType(B, newtype)); 134 PetscCall(MatGetBlockSize(A, &bs)); 135 PetscCall(MatSetBlockSize(B, bs)); 136 PetscCall(PetscLayoutSetUp(B->rmap)); 137 PetscCall(PetscLayoutSetUp(B->cmap)); 138 PetscCall(PetscObjectTypeCompareAny((PetscObject)B, &isdense, MATSEQDENSE, MATMPIDENSE, MATSEQDENSECUDA, "")); 139 if (!isdense) { 140 PetscCall(MatGetRowUpperTriangular(A)); 141 PetscCall(MatPreallocateWithMats_Private(B, 1, &A, &symm, PETSC_TRUE)); 142 PetscCall(MatRestoreRowUpperTriangular(A)); 143 } else { 144 PetscCall(MatSetUp(B)); 145 } 146 } else { 147 B = *newmat; 148 PetscCall(MatZeroEntries(B)); 149 } 150 151 PetscCall(MatGetRowUpperTriangular(A)); 152 for (r = A->rmap->rstart; r < A->rmap->rend; r++) { 153 PetscInt ncols; 154 const PetscInt *row; 155 const PetscScalar *vals; 156 157 PetscCall(MatGetRow(A, r, &ncols, &row, &vals)); 158 PetscCall(MatSetValues(B, 1, &r, ncols, row, vals, INSERT_VALUES)); 159 #if defined(PETSC_USE_COMPLEX) 160 if (A->hermitian == PETSC_BOOL3_TRUE) { 161 PetscInt i; 162 for (i = 0; i < ncols; i++) PetscCall(MatSetValue(B, row[i], r, PetscConj(vals[i]), INSERT_VALUES)); 163 } else { 164 PetscCall(MatSetValues(B, ncols, row, 1, &r, vals, INSERT_VALUES)); 165 } 166 #else 167 PetscCall(MatSetValues(B, ncols, row, 1, &r, vals, INSERT_VALUES)); 168 #endif 169 PetscCall(MatRestoreRow(A, r, &ncols, &row, &vals)); 170 } 171 PetscCall(MatRestoreRowUpperTriangular(A)); 172 PetscCall(MatAssemblyBegin(B, MAT_FINAL_ASSEMBLY)); 173 PetscCall(MatAssemblyEnd(B, MAT_FINAL_ASSEMBLY)); 174 175 if (reuse == MAT_INPLACE_MATRIX) { 176 PetscCall(MatHeaderReplace(A, &B)); 177 } else { 178 *newmat = B; 179 } 180 PetscFunctionReturn(PETSC_SUCCESS); 181 } 182 183 PetscErrorCode MatStoreValues_MPISBAIJ(Mat mat) 184 { 185 Mat_MPISBAIJ *aij = (Mat_MPISBAIJ *)mat->data; 186 187 PetscFunctionBegin; 188 PetscCall(MatStoreValues(aij->A)); 189 PetscCall(MatStoreValues(aij->B)); 190 PetscFunctionReturn(PETSC_SUCCESS); 191 } 192 193 PetscErrorCode MatRetrieveValues_MPISBAIJ(Mat mat) 194 { 195 Mat_MPISBAIJ *aij = (Mat_MPISBAIJ *)mat->data; 196 197 PetscFunctionBegin; 198 PetscCall(MatRetrieveValues(aij->A)); 199 PetscCall(MatRetrieveValues(aij->B)); 200 PetscFunctionReturn(PETSC_SUCCESS); 201 } 202 203 #define MatSetValues_SeqSBAIJ_A_Private(row, col, value, addv, orow, ocol) \ 204 do { \ 205 brow = row / bs; \ 206 rp = aj + ai[brow]; \ 207 ap = aa + bs2 * ai[brow]; \ 208 rmax = aimax[brow]; \ 209 nrow = ailen[brow]; \ 210 bcol = col / bs; \ 211 ridx = row % bs; \ 212 cidx = col % bs; \ 213 low = 0; \ 214 high = nrow; \ 215 while (high - low > 3) { \ 216 t = (low + high) / 2; \ 217 if (rp[t] > bcol) high = t; \ 218 else low = t; \ 219 } \ 220 for (_i = low; _i < high; _i++) { \ 221 if (rp[_i] > bcol) break; \ 222 if (rp[_i] == bcol) { \ 223 bap = ap + bs2 * _i + bs * cidx + ridx; \ 224 if (addv == ADD_VALUES) *bap += value; \ 225 else *bap = value; \ 226 goto a_noinsert; \ 227 } \ 228 } \ 229 if (a->nonew == 1) goto a_noinsert; \ 230 PetscCheck(a->nonew != -1, PETSC_COMM_SELF, PETSC_ERR_ARG_OUTOFRANGE, "Inserting a new nonzero at global row/column (%" PetscInt_FMT ", %" PetscInt_FMT ") into matrix", orow, ocol); \ 231 MatSeqXAIJReallocateAIJ(A, a->mbs, bs2, nrow, brow, bcol, rmax, aa, ai, aj, rp, ap, aimax, a->nonew, MatScalar); \ 232 N = nrow++ - 1; \ 233 /* shift up all the later entries in this row */ \ 234 PetscCall(PetscArraymove(rp + _i + 1, rp + _i, N - _i + 1)); \ 235 PetscCall(PetscArraymove(ap + bs2 * (_i + 1), ap + bs2 * _i, bs2 * (N - _i + 1))); \ 236 PetscCall(PetscArrayzero(ap + bs2 * _i, bs2)); \ 237 rp[_i] = bcol; \ 238 ap[bs2 * _i + bs * cidx + ridx] = value; \ 239 A->nonzerostate++; \ 240 a_noinsert:; \ 241 ailen[brow] = nrow; \ 242 } while (0) 243 244 #define MatSetValues_SeqSBAIJ_B_Private(row, col, value, addv, orow, ocol) \ 245 do { \ 246 brow = row / bs; \ 247 rp = bj + bi[brow]; \ 248 ap = ba + bs2 * bi[brow]; \ 249 rmax = bimax[brow]; \ 250 nrow = bilen[brow]; \ 251 bcol = col / bs; \ 252 ridx = row % bs; \ 253 cidx = col % bs; \ 254 low = 0; \ 255 high = nrow; \ 256 while (high - low > 3) { \ 257 t = (low + high) / 2; \ 258 if (rp[t] > bcol) high = t; \ 259 else low = t; \ 260 } \ 261 for (_i = low; _i < high; _i++) { \ 262 if (rp[_i] > bcol) break; \ 263 if (rp[_i] == bcol) { \ 264 bap = ap + bs2 * _i + bs * cidx + ridx; \ 265 if (addv == ADD_VALUES) *bap += value; \ 266 else *bap = value; \ 267 goto b_noinsert; \ 268 } \ 269 } \ 270 if (b->nonew == 1) goto b_noinsert; \ 271 PetscCheck(b->nonew != -1, PETSC_COMM_SELF, PETSC_ERR_ARG_OUTOFRANGE, "Inserting a new nonzero at global row/column (%" PetscInt_FMT ", %" PetscInt_FMT ") into matrix", orow, ocol); \ 272 MatSeqXAIJReallocateAIJ(B, b->mbs, bs2, nrow, brow, bcol, rmax, ba, bi, bj, rp, ap, bimax, b->nonew, MatScalar); \ 273 N = nrow++ - 1; \ 274 /* shift up all the later entries in this row */ \ 275 PetscCall(PetscArraymove(rp + _i + 1, rp + _i, N - _i + 1)); \ 276 PetscCall(PetscArraymove(ap + bs2 * (_i + 1), ap + bs2 * _i, bs2 * (N - _i + 1))); \ 277 PetscCall(PetscArrayzero(ap + bs2 * _i, bs2)); \ 278 rp[_i] = bcol; \ 279 ap[bs2 * _i + bs * cidx + ridx] = value; \ 280 B->nonzerostate++; \ 281 b_noinsert:; \ 282 bilen[brow] = nrow; \ 283 } while (0) 284 285 /* Only add/insert a(i,j) with i<=j (blocks). 286 Any a(i,j) with i>j input by user is ignored or generates an error 287 */ 288 PetscErrorCode MatSetValues_MPISBAIJ(Mat mat, PetscInt m, const PetscInt im[], PetscInt n, const PetscInt in[], const PetscScalar v[], InsertMode addv) 289 { 290 Mat_MPISBAIJ *baij = (Mat_MPISBAIJ *)mat->data; 291 MatScalar value; 292 PetscBool roworiented = baij->roworiented; 293 PetscInt i, j, row, col; 294 PetscInt rstart_orig = mat->rmap->rstart; 295 PetscInt rend_orig = mat->rmap->rend, cstart_orig = mat->cmap->rstart; 296 PetscInt cend_orig = mat->cmap->rend, bs = mat->rmap->bs; 297 298 /* Some Variables required in the macro */ 299 Mat A = baij->A; 300 Mat_SeqSBAIJ *a = (Mat_SeqSBAIJ *)(A)->data; 301 PetscInt *aimax = a->imax, *ai = a->i, *ailen = a->ilen, *aj = a->j; 302 MatScalar *aa = a->a; 303 304 Mat B = baij->B; 305 Mat_SeqBAIJ *b = (Mat_SeqBAIJ *)(B)->data; 306 PetscInt *bimax = b->imax, *bi = b->i, *bilen = b->ilen, *bj = b->j; 307 MatScalar *ba = b->a; 308 309 PetscInt *rp, ii, nrow, _i, rmax, N, brow, bcol; 310 PetscInt low, high, t, ridx, cidx, bs2 = a->bs2; 311 MatScalar *ap, *bap; 312 313 /* for stash */ 314 PetscInt n_loc, *in_loc = NULL; 315 MatScalar *v_loc = NULL; 316 317 PetscFunctionBegin; 318 if (!baij->donotstash) { 319 if (n > baij->n_loc) { 320 PetscCall(PetscFree(baij->in_loc)); 321 PetscCall(PetscFree(baij->v_loc)); 322 PetscCall(PetscMalloc1(n, &baij->in_loc)); 323 PetscCall(PetscMalloc1(n, &baij->v_loc)); 324 325 baij->n_loc = n; 326 } 327 in_loc = baij->in_loc; 328 v_loc = baij->v_loc; 329 } 330 331 for (i = 0; i < m; i++) { 332 if (im[i] < 0) continue; 333 PetscCheck(im[i] < mat->rmap->N, PETSC_COMM_SELF, PETSC_ERR_ARG_OUTOFRANGE, "Row too large: row %" PetscInt_FMT " max %" PetscInt_FMT, im[i], mat->rmap->N - 1); 334 if (im[i] >= rstart_orig && im[i] < rend_orig) { /* this processor entry */ 335 row = im[i] - rstart_orig; /* local row index */ 336 for (j = 0; j < n; j++) { 337 if (im[i] / bs > in[j] / bs) { 338 if (a->ignore_ltriangular) { 339 continue; /* ignore lower triangular blocks */ 340 } else SETERRQ(PETSC_COMM_SELF, PETSC_ERR_USER, "Lower triangular value cannot be set for sbaij format. Ignoring these values, run with -mat_ignore_lower_triangular or call MatSetOption(mat,MAT_IGNORE_LOWER_TRIANGULAR,PETSC_TRUE)"); 341 } 342 if (in[j] >= cstart_orig && in[j] < cend_orig) { /* diag entry (A) */ 343 col = in[j] - cstart_orig; /* local col index */ 344 brow = row / bs; 345 bcol = col / bs; 346 if (brow > bcol) continue; /* ignore lower triangular blocks of A */ 347 if (roworiented) value = v[i * n + j]; 348 else value = v[i + j * m]; 349 MatSetValues_SeqSBAIJ_A_Private(row, col, value, addv, im[i], in[j]); 350 /* PetscCall(MatSetValues_SeqBAIJ(baij->A,1,&row,1,&col,&value,addv)); */ 351 } else if (in[j] < 0) { 352 continue; 353 } else { 354 PetscCheck(in[j] < mat->cmap->N, PETSC_COMM_SELF, PETSC_ERR_ARG_OUTOFRANGE, "Column too large: col %" PetscInt_FMT " max %" PetscInt_FMT, in[j], mat->cmap->N - 1); 355 /* off-diag entry (B) */ 356 if (mat->was_assembled) { 357 if (!baij->colmap) PetscCall(MatCreateColmap_MPIBAIJ_Private(mat)); 358 #if defined(PETSC_USE_CTABLE) 359 PetscCall(PetscHMapIGetWithDefault(baij->colmap, in[j] / bs + 1, 0, &col)); 360 col = col - 1; 361 #else 362 col = baij->colmap[in[j] / bs] - 1; 363 #endif 364 if (col < 0 && !((Mat_SeqSBAIJ *)(baij->A->data))->nonew) { 365 PetscCall(MatDisAssemble_MPISBAIJ(mat)); 366 col = in[j]; 367 /* Reinitialize the variables required by MatSetValues_SeqBAIJ_B_Private() */ 368 B = baij->B; 369 b = (Mat_SeqBAIJ *)(B)->data; 370 bimax = b->imax; 371 bi = b->i; 372 bilen = b->ilen; 373 bj = b->j; 374 ba = b->a; 375 } else col += in[j] % bs; 376 } else col = in[j]; 377 if (roworiented) value = v[i * n + j]; 378 else value = v[i + j * m]; 379 MatSetValues_SeqSBAIJ_B_Private(row, col, value, addv, im[i], in[j]); 380 /* PetscCall(MatSetValues_SeqBAIJ(baij->B,1,&row,1,&col,&value,addv)); */ 381 } 382 } 383 } else { /* off processor entry */ 384 PetscCheck(!mat->nooffprocentries, PETSC_COMM_SELF, PETSC_ERR_ARG_WRONG, "Setting off process row %" PetscInt_FMT " even though MatSetOption(,MAT_NO_OFF_PROC_ENTRIES,PETSC_TRUE) was set", im[i]); 385 if (!baij->donotstash) { 386 mat->assembled = PETSC_FALSE; 387 n_loc = 0; 388 for (j = 0; j < n; j++) { 389 if (im[i] / bs > in[j] / bs) continue; /* ignore lower triangular blocks */ 390 in_loc[n_loc] = in[j]; 391 if (roworiented) { 392 v_loc[n_loc] = v[i * n + j]; 393 } else { 394 v_loc[n_loc] = v[j * m + i]; 395 } 396 n_loc++; 397 } 398 PetscCall(MatStashValuesRow_Private(&mat->stash, im[i], n_loc, in_loc, v_loc, PETSC_FALSE)); 399 } 400 } 401 } 402 PetscFunctionReturn(PETSC_SUCCESS); 403 } 404 405 static inline PetscErrorCode MatSetValuesBlocked_SeqSBAIJ_Inlined(Mat A, PetscInt row, PetscInt col, const PetscScalar v[], InsertMode is, PetscInt orow, PetscInt ocol) 406 { 407 Mat_SeqSBAIJ *a = (Mat_SeqSBAIJ *)A->data; 408 PetscInt *rp, low, high, t, ii, jj, nrow, i, rmax, N; 409 PetscInt *imax = a->imax, *ai = a->i, *ailen = a->ilen; 410 PetscInt *aj = a->j, nonew = a->nonew, bs2 = a->bs2, bs = A->rmap->bs; 411 PetscBool roworiented = a->roworiented; 412 const PetscScalar *value = v; 413 MatScalar *ap, *aa = a->a, *bap; 414 415 PetscFunctionBegin; 416 if (col < row) { 417 if (a->ignore_ltriangular) PetscFunctionReturn(PETSC_SUCCESS); /* ignore lower triangular block */ 418 else SETERRQ(PETSC_COMM_SELF, PETSC_ERR_USER, "Lower triangular value cannot be set for sbaij format. Ignoring these values, run with -mat_ignore_lower_triangular or call MatSetOption(mat,MAT_IGNORE_LOWER_TRIANGULAR,PETSC_TRUE)"); 419 } 420 rp = aj + ai[row]; 421 ap = aa + bs2 * ai[row]; 422 rmax = imax[row]; 423 nrow = ailen[row]; 424 value = v; 425 low = 0; 426 high = nrow; 427 428 while (high - low > 7) { 429 t = (low + high) / 2; 430 if (rp[t] > col) high = t; 431 else low = t; 432 } 433 for (i = low; i < high; i++) { 434 if (rp[i] > col) break; 435 if (rp[i] == col) { 436 bap = ap + bs2 * i; 437 if (roworiented) { 438 if (is == ADD_VALUES) { 439 for (ii = 0; ii < bs; ii++) { 440 for (jj = ii; jj < bs2; jj += bs) bap[jj] += *value++; 441 } 442 } else { 443 for (ii = 0; ii < bs; ii++) { 444 for (jj = ii; jj < bs2; jj += bs) bap[jj] = *value++; 445 } 446 } 447 } else { 448 if (is == ADD_VALUES) { 449 for (ii = 0; ii < bs; ii++) { 450 for (jj = 0; jj < bs; jj++) *bap++ += *value++; 451 } 452 } else { 453 for (ii = 0; ii < bs; ii++) { 454 for (jj = 0; jj < bs; jj++) *bap++ = *value++; 455 } 456 } 457 } 458 goto noinsert2; 459 } 460 } 461 if (nonew == 1) goto noinsert2; 462 PetscCheck(nonew != -1, PETSC_COMM_SELF, PETSC_ERR_ARG_OUTOFRANGE, "Inserting a new block index nonzero block (%" PetscInt_FMT ", %" PetscInt_FMT ") in the matrix", orow, ocol); 463 MatSeqXAIJReallocateAIJ(A, a->mbs, bs2, nrow, row, col, rmax, aa, ai, aj, rp, ap, imax, nonew, MatScalar); 464 N = nrow++ - 1; 465 high++; 466 /* shift up all the later entries in this row */ 467 PetscCall(PetscArraymove(rp + i + 1, rp + i, N - i + 1)); 468 PetscCall(PetscArraymove(ap + bs2 * (i + 1), ap + bs2 * i, bs2 * (N - i + 1))); 469 rp[i] = col; 470 bap = ap + bs2 * i; 471 if (roworiented) { 472 for (ii = 0; ii < bs; ii++) { 473 for (jj = ii; jj < bs2; jj += bs) bap[jj] = *value++; 474 } 475 } else { 476 for (ii = 0; ii < bs; ii++) { 477 for (jj = 0; jj < bs; jj++) *bap++ = *value++; 478 } 479 } 480 noinsert2:; 481 ailen[row] = nrow; 482 PetscFunctionReturn(PETSC_SUCCESS); 483 } 484 485 /* 486 This routine is exactly duplicated in mpibaij.c 487 */ 488 static inline PetscErrorCode MatSetValuesBlocked_SeqBAIJ_Inlined(Mat A, PetscInt row, PetscInt col, const PetscScalar v[], InsertMode is, PetscInt orow, PetscInt ocol) 489 { 490 Mat_SeqBAIJ *a = (Mat_SeqBAIJ *)A->data; 491 PetscInt *rp, low, high, t, ii, jj, nrow, i, rmax, N; 492 PetscInt *imax = a->imax, *ai = a->i, *ailen = a->ilen; 493 PetscInt *aj = a->j, nonew = a->nonew, bs2 = a->bs2, bs = A->rmap->bs; 494 PetscBool roworiented = a->roworiented; 495 const PetscScalar *value = v; 496 MatScalar *ap, *aa = a->a, *bap; 497 498 PetscFunctionBegin; 499 rp = aj + ai[row]; 500 ap = aa + bs2 * ai[row]; 501 rmax = imax[row]; 502 nrow = ailen[row]; 503 low = 0; 504 high = nrow; 505 value = v; 506 while (high - low > 7) { 507 t = (low + high) / 2; 508 if (rp[t] > col) high = t; 509 else low = t; 510 } 511 for (i = low; i < high; i++) { 512 if (rp[i] > col) break; 513 if (rp[i] == col) { 514 bap = ap + bs2 * i; 515 if (roworiented) { 516 if (is == ADD_VALUES) { 517 for (ii = 0; ii < bs; ii++) { 518 for (jj = ii; jj < bs2; jj += bs) bap[jj] += *value++; 519 } 520 } else { 521 for (ii = 0; ii < bs; ii++) { 522 for (jj = ii; jj < bs2; jj += bs) bap[jj] = *value++; 523 } 524 } 525 } else { 526 if (is == ADD_VALUES) { 527 for (ii = 0; ii < bs; ii++, value += bs) { 528 for (jj = 0; jj < bs; jj++) bap[jj] += value[jj]; 529 bap += bs; 530 } 531 } else { 532 for (ii = 0; ii < bs; ii++, value += bs) { 533 for (jj = 0; jj < bs; jj++) bap[jj] = value[jj]; 534 bap += bs; 535 } 536 } 537 } 538 goto noinsert2; 539 } 540 } 541 if (nonew == 1) goto noinsert2; 542 PetscCheck(nonew != -1, PETSC_COMM_SELF, PETSC_ERR_ARG_OUTOFRANGE, "Inserting a new global block indexed nonzero block (%" PetscInt_FMT ", %" PetscInt_FMT ") in the matrix", orow, ocol); 543 MatSeqXAIJReallocateAIJ(A, a->mbs, bs2, nrow, row, col, rmax, aa, ai, aj, rp, ap, imax, nonew, MatScalar); 544 N = nrow++ - 1; 545 high++; 546 /* shift up all the later entries in this row */ 547 PetscCall(PetscArraymove(rp + i + 1, rp + i, N - i + 1)); 548 PetscCall(PetscArraymove(ap + bs2 * (i + 1), ap + bs2 * i, bs2 * (N - i + 1))); 549 rp[i] = col; 550 bap = ap + bs2 * i; 551 if (roworiented) { 552 for (ii = 0; ii < bs; ii++) { 553 for (jj = ii; jj < bs2; jj += bs) bap[jj] = *value++; 554 } 555 } else { 556 for (ii = 0; ii < bs; ii++) { 557 for (jj = 0; jj < bs; jj++) *bap++ = *value++; 558 } 559 } 560 noinsert2:; 561 ailen[row] = nrow; 562 PetscFunctionReturn(PETSC_SUCCESS); 563 } 564 565 /* 566 This routine could be optimized by removing the need for the block copy below and passing stride information 567 to the above inline routines; similarly in MatSetValuesBlocked_MPIBAIJ() 568 */ 569 PetscErrorCode MatSetValuesBlocked_MPISBAIJ(Mat mat, PetscInt m, const PetscInt im[], PetscInt n, const PetscInt in[], const MatScalar v[], InsertMode addv) 570 { 571 Mat_MPISBAIJ *baij = (Mat_MPISBAIJ *)mat->data; 572 const MatScalar *value; 573 MatScalar *barray = baij->barray; 574 PetscBool roworiented = baij->roworiented, ignore_ltriangular = ((Mat_SeqSBAIJ *)baij->A->data)->ignore_ltriangular; 575 PetscInt i, j, ii, jj, row, col, rstart = baij->rstartbs; 576 PetscInt rend = baij->rendbs, cstart = baij->cstartbs, stepval; 577 PetscInt cend = baij->cendbs, bs = mat->rmap->bs, bs2 = baij->bs2; 578 579 PetscFunctionBegin; 580 if (!barray) { 581 PetscCall(PetscMalloc1(bs2, &barray)); 582 baij->barray = barray; 583 } 584 585 if (roworiented) { 586 stepval = (n - 1) * bs; 587 } else { 588 stepval = (m - 1) * bs; 589 } 590 for (i = 0; i < m; i++) { 591 if (im[i] < 0) continue; 592 PetscCheck(im[i] < baij->Mbs, PETSC_COMM_SELF, PETSC_ERR_ARG_OUTOFRANGE, "Block indexed row too large %" PetscInt_FMT " max %" PetscInt_FMT, im[i], baij->Mbs - 1); 593 if (im[i] >= rstart && im[i] < rend) { 594 row = im[i] - rstart; 595 for (j = 0; j < n; j++) { 596 if (im[i] > in[j]) { 597 if (ignore_ltriangular) continue; /* ignore lower triangular blocks */ 598 else SETERRQ(PETSC_COMM_SELF, PETSC_ERR_USER, "Lower triangular value cannot be set for sbaij format. Ignoring these values, run with -mat_ignore_lower_triangular or call MatSetOption(mat,MAT_IGNORE_LOWER_TRIANGULAR,PETSC_TRUE)"); 599 } 600 /* If NumCol = 1 then a copy is not required */ 601 if ((roworiented) && (n == 1)) { 602 barray = (MatScalar *)v + i * bs2; 603 } else if ((!roworiented) && (m == 1)) { 604 barray = (MatScalar *)v + j * bs2; 605 } else { /* Here a copy is required */ 606 if (roworiented) { 607 value = v + i * (stepval + bs) * bs + j * bs; 608 } else { 609 value = v + j * (stepval + bs) * bs + i * bs; 610 } 611 for (ii = 0; ii < bs; ii++, value += stepval) { 612 for (jj = 0; jj < bs; jj++) *barray++ = *value++; 613 } 614 barray -= bs2; 615 } 616 617 if (in[j] >= cstart && in[j] < cend) { 618 col = in[j] - cstart; 619 PetscCall(MatSetValuesBlocked_SeqSBAIJ_Inlined(baij->A, row, col, barray, addv, im[i], in[j])); 620 } else if (in[j] < 0) { 621 continue; 622 } else { 623 PetscCheck(in[j] < baij->Nbs, PETSC_COMM_SELF, PETSC_ERR_ARG_OUTOFRANGE, "Block indexed column too large %" PetscInt_FMT " max %" PetscInt_FMT, in[j], baij->Nbs - 1); 624 if (mat->was_assembled) { 625 if (!baij->colmap) PetscCall(MatCreateColmap_MPIBAIJ_Private(mat)); 626 627 #if defined(PETSC_USE_DEBUG) 628 #if defined(PETSC_USE_CTABLE) 629 { 630 PetscInt data; 631 PetscCall(PetscHMapIGetWithDefault(baij->colmap, in[j] + 1, 0, &data)); 632 PetscCheck((data - 1) % bs == 0, PETSC_COMM_SELF, PETSC_ERR_PLIB, "Incorrect colmap"); 633 } 634 #else 635 PetscCheck((baij->colmap[in[j]] - 1) % bs == 0, PETSC_COMM_SELF, PETSC_ERR_PLIB, "Incorrect colmap"); 636 #endif 637 #endif 638 #if defined(PETSC_USE_CTABLE) 639 PetscCall(PetscHMapIGetWithDefault(baij->colmap, in[j] + 1, 0, &col)); 640 col = (col - 1) / bs; 641 #else 642 col = (baij->colmap[in[j]] - 1) / bs; 643 #endif 644 if (col < 0 && !((Mat_SeqBAIJ *)(baij->A->data))->nonew) { 645 PetscCall(MatDisAssemble_MPISBAIJ(mat)); 646 col = in[j]; 647 } 648 } else col = in[j]; 649 PetscCall(MatSetValuesBlocked_SeqBAIJ_Inlined(baij->B, row, col, barray, addv, im[i], in[j])); 650 } 651 } 652 } else { 653 PetscCheck(!mat->nooffprocentries, PETSC_COMM_SELF, PETSC_ERR_ARG_WRONG, "Setting off process block indexed row %" PetscInt_FMT " even though MatSetOption(,MAT_NO_OFF_PROC_ENTRIES,PETSC_TRUE) was set", im[i]); 654 if (!baij->donotstash) { 655 if (roworiented) { 656 PetscCall(MatStashValuesRowBlocked_Private(&mat->bstash, im[i], n, in, v, m, n, i)); 657 } else { 658 PetscCall(MatStashValuesColBlocked_Private(&mat->bstash, im[i], n, in, v, m, n, i)); 659 } 660 } 661 } 662 } 663 PetscFunctionReturn(PETSC_SUCCESS); 664 } 665 666 PetscErrorCode MatGetValues_MPISBAIJ(Mat mat, PetscInt m, const PetscInt idxm[], PetscInt n, const PetscInt idxn[], PetscScalar v[]) 667 { 668 Mat_MPISBAIJ *baij = (Mat_MPISBAIJ *)mat->data; 669 PetscInt bs = mat->rmap->bs, i, j, bsrstart = mat->rmap->rstart, bsrend = mat->rmap->rend; 670 PetscInt bscstart = mat->cmap->rstart, bscend = mat->cmap->rend, row, col, data; 671 672 PetscFunctionBegin; 673 for (i = 0; i < m; i++) { 674 if (idxm[i] < 0) continue; /* negative row */ 675 PetscCheck(idxm[i] < mat->rmap->N, PETSC_COMM_SELF, PETSC_ERR_ARG_OUTOFRANGE, "Row too large: row %" PetscInt_FMT " max %" PetscInt_FMT, idxm[i], mat->rmap->N - 1); 676 if (idxm[i] >= bsrstart && idxm[i] < bsrend) { 677 row = idxm[i] - bsrstart; 678 for (j = 0; j < n; j++) { 679 if (idxn[j] < 0) continue; /* negative column */ 680 PetscCheck(idxn[j] < mat->cmap->N, PETSC_COMM_SELF, PETSC_ERR_ARG_OUTOFRANGE, "Column too large: col %" PetscInt_FMT " max %" PetscInt_FMT, idxn[j], mat->cmap->N - 1); 681 if (idxn[j] >= bscstart && idxn[j] < bscend) { 682 col = idxn[j] - bscstart; 683 PetscCall(MatGetValues_SeqSBAIJ(baij->A, 1, &row, 1, &col, v + i * n + j)); 684 } else { 685 if (!baij->colmap) PetscCall(MatCreateColmap_MPIBAIJ_Private(mat)); 686 #if defined(PETSC_USE_CTABLE) 687 PetscCall(PetscHMapIGetWithDefault(baij->colmap, idxn[j] / bs + 1, 0, &data)); 688 data--; 689 #else 690 data = baij->colmap[idxn[j] / bs] - 1; 691 #endif 692 if ((data < 0) || (baij->garray[data / bs] != idxn[j] / bs)) *(v + i * n + j) = 0.0; 693 else { 694 col = data + idxn[j] % bs; 695 PetscCall(MatGetValues_SeqBAIJ(baij->B, 1, &row, 1, &col, v + i * n + j)); 696 } 697 } 698 } 699 } else SETERRQ(PETSC_COMM_SELF, PETSC_ERR_SUP, "Only local values currently supported"); 700 } 701 PetscFunctionReturn(PETSC_SUCCESS); 702 } 703 704 PetscErrorCode MatNorm_MPISBAIJ(Mat mat, NormType type, PetscReal *norm) 705 { 706 Mat_MPISBAIJ *baij = (Mat_MPISBAIJ *)mat->data; 707 PetscReal sum[2], *lnorm2; 708 709 PetscFunctionBegin; 710 if (baij->size == 1) { 711 PetscCall(MatNorm(baij->A, type, norm)); 712 } else { 713 if (type == NORM_FROBENIUS) { 714 PetscCall(PetscMalloc1(2, &lnorm2)); 715 PetscCall(MatNorm(baij->A, type, lnorm2)); 716 *lnorm2 = (*lnorm2) * (*lnorm2); 717 lnorm2++; /* squar power of norm(A) */ 718 PetscCall(MatNorm(baij->B, type, lnorm2)); 719 *lnorm2 = (*lnorm2) * (*lnorm2); 720 lnorm2--; /* squar power of norm(B) */ 721 PetscCall(MPIU_Allreduce(lnorm2, sum, 2, MPIU_REAL, MPIU_SUM, PetscObjectComm((PetscObject)mat))); 722 *norm = PetscSqrtReal(sum[0] + 2 * sum[1]); 723 PetscCall(PetscFree(lnorm2)); 724 } else if (type == NORM_INFINITY || type == NORM_1) { /* max row/column sum */ 725 Mat_SeqSBAIJ *amat = (Mat_SeqSBAIJ *)baij->A->data; 726 Mat_SeqBAIJ *bmat = (Mat_SeqBAIJ *)baij->B->data; 727 PetscReal *rsum, *rsum2, vabs; 728 PetscInt *jj, *garray = baij->garray, rstart = baij->rstartbs, nz; 729 PetscInt brow, bcol, col, bs = baij->A->rmap->bs, row, grow, gcol, mbs = amat->mbs; 730 MatScalar *v; 731 732 PetscCall(PetscMalloc2(mat->cmap->N, &rsum, mat->cmap->N, &rsum2)); 733 PetscCall(PetscArrayzero(rsum, mat->cmap->N)); 734 /* Amat */ 735 v = amat->a; 736 jj = amat->j; 737 for (brow = 0; brow < mbs; brow++) { 738 grow = bs * (rstart + brow); 739 nz = amat->i[brow + 1] - amat->i[brow]; 740 for (bcol = 0; bcol < nz; bcol++) { 741 gcol = bs * (rstart + *jj); 742 jj++; 743 for (col = 0; col < bs; col++) { 744 for (row = 0; row < bs; row++) { 745 vabs = PetscAbsScalar(*v); 746 v++; 747 rsum[gcol + col] += vabs; 748 /* non-diagonal block */ 749 if (bcol > 0 && vabs > 0.0) rsum[grow + row] += vabs; 750 } 751 } 752 } 753 PetscCall(PetscLogFlops(nz * bs * bs)); 754 } 755 /* Bmat */ 756 v = bmat->a; 757 jj = bmat->j; 758 for (brow = 0; brow < mbs; brow++) { 759 grow = bs * (rstart + brow); 760 nz = bmat->i[brow + 1] - bmat->i[brow]; 761 for (bcol = 0; bcol < nz; bcol++) { 762 gcol = bs * garray[*jj]; 763 jj++; 764 for (col = 0; col < bs; col++) { 765 for (row = 0; row < bs; row++) { 766 vabs = PetscAbsScalar(*v); 767 v++; 768 rsum[gcol + col] += vabs; 769 rsum[grow + row] += vabs; 770 } 771 } 772 } 773 PetscCall(PetscLogFlops(nz * bs * bs)); 774 } 775 PetscCall(MPIU_Allreduce(rsum, rsum2, mat->cmap->N, MPIU_REAL, MPIU_SUM, PetscObjectComm((PetscObject)mat))); 776 *norm = 0.0; 777 for (col = 0; col < mat->cmap->N; col++) { 778 if (rsum2[col] > *norm) *norm = rsum2[col]; 779 } 780 PetscCall(PetscFree2(rsum, rsum2)); 781 } else SETERRQ(PETSC_COMM_SELF, PETSC_ERR_SUP, "No support for this norm yet"); 782 } 783 PetscFunctionReturn(PETSC_SUCCESS); 784 } 785 786 PetscErrorCode MatAssemblyBegin_MPISBAIJ(Mat mat, MatAssemblyType mode) 787 { 788 Mat_MPISBAIJ *baij = (Mat_MPISBAIJ *)mat->data; 789 PetscInt nstash, reallocs; 790 791 PetscFunctionBegin; 792 if (baij->donotstash || mat->nooffprocentries) PetscFunctionReturn(PETSC_SUCCESS); 793 794 PetscCall(MatStashScatterBegin_Private(mat, &mat->stash, mat->rmap->range)); 795 PetscCall(MatStashScatterBegin_Private(mat, &mat->bstash, baij->rangebs)); 796 PetscCall(MatStashGetInfo_Private(&mat->stash, &nstash, &reallocs)); 797 PetscCall(PetscInfo(mat, "Stash has %" PetscInt_FMT " entries,uses %" PetscInt_FMT " mallocs.\n", nstash, reallocs)); 798 PetscCall(MatStashGetInfo_Private(&mat->stash, &nstash, &reallocs)); 799 PetscCall(PetscInfo(mat, "Block-Stash has %" PetscInt_FMT " entries, uses %" PetscInt_FMT " mallocs.\n", nstash, reallocs)); 800 PetscFunctionReturn(PETSC_SUCCESS); 801 } 802 803 PetscErrorCode MatAssemblyEnd_MPISBAIJ(Mat mat, MatAssemblyType mode) 804 { 805 Mat_MPISBAIJ *baij = (Mat_MPISBAIJ *)mat->data; 806 Mat_SeqSBAIJ *a = (Mat_SeqSBAIJ *)baij->A->data; 807 PetscInt i, j, rstart, ncols, flg, bs2 = baij->bs2; 808 PetscInt *row, *col; 809 PetscBool other_disassembled; 810 PetscMPIInt n; 811 PetscBool r1, r2, r3; 812 MatScalar *val; 813 814 /* do not use 'b=(Mat_SeqBAIJ*)baij->B->data' as B can be reset in disassembly */ 815 PetscFunctionBegin; 816 if (!baij->donotstash && !mat->nooffprocentries) { 817 while (1) { 818 PetscCall(MatStashScatterGetMesg_Private(&mat->stash, &n, &row, &col, &val, &flg)); 819 if (!flg) break; 820 821 for (i = 0; i < n;) { 822 /* Now identify the consecutive vals belonging to the same row */ 823 for (j = i, rstart = row[j]; j < n; j++) { 824 if (row[j] != rstart) break; 825 } 826 if (j < n) ncols = j - i; 827 else ncols = n - i; 828 /* Now assemble all these values with a single function call */ 829 PetscCall(MatSetValues_MPISBAIJ(mat, 1, row + i, ncols, col + i, val + i, mat->insertmode)); 830 i = j; 831 } 832 } 833 PetscCall(MatStashScatterEnd_Private(&mat->stash)); 834 /* Now process the block-stash. Since the values are stashed column-oriented, 835 set the roworiented flag to column oriented, and after MatSetValues() 836 restore the original flags */ 837 r1 = baij->roworiented; 838 r2 = a->roworiented; 839 r3 = ((Mat_SeqBAIJ *)baij->B->data)->roworiented; 840 841 baij->roworiented = PETSC_FALSE; 842 a->roworiented = PETSC_FALSE; 843 844 ((Mat_SeqBAIJ *)baij->B->data)->roworiented = PETSC_FALSE; /* b->roworinted */ 845 while (1) { 846 PetscCall(MatStashScatterGetMesg_Private(&mat->bstash, &n, &row, &col, &val, &flg)); 847 if (!flg) break; 848 849 for (i = 0; i < n;) { 850 /* Now identify the consecutive vals belonging to the same row */ 851 for (j = i, rstart = row[j]; j < n; j++) { 852 if (row[j] != rstart) break; 853 } 854 if (j < n) ncols = j - i; 855 else ncols = n - i; 856 PetscCall(MatSetValuesBlocked_MPISBAIJ(mat, 1, row + i, ncols, col + i, val + i * bs2, mat->insertmode)); 857 i = j; 858 } 859 } 860 PetscCall(MatStashScatterEnd_Private(&mat->bstash)); 861 862 baij->roworiented = r1; 863 a->roworiented = r2; 864 865 ((Mat_SeqBAIJ *)baij->B->data)->roworiented = r3; /* b->roworinted */ 866 } 867 868 PetscCall(MatAssemblyBegin(baij->A, mode)); 869 PetscCall(MatAssemblyEnd(baij->A, mode)); 870 871 /* determine if any processor has disassembled, if so we must 872 also disassemble ourselves, in order that we may reassemble. */ 873 /* 874 if nonzero structure of submatrix B cannot change then we know that 875 no processor disassembled thus we can skip this stuff 876 */ 877 if (!((Mat_SeqBAIJ *)baij->B->data)->nonew) { 878 PetscCall(MPIU_Allreduce(&mat->was_assembled, &other_disassembled, 1, MPIU_BOOL, MPI_LAND, PetscObjectComm((PetscObject)mat))); 879 if (mat->was_assembled && !other_disassembled) PetscCall(MatDisAssemble_MPISBAIJ(mat)); 880 } 881 882 if (!mat->was_assembled && mode == MAT_FINAL_ASSEMBLY) { PetscCall(MatSetUpMultiply_MPISBAIJ(mat)); /* setup Mvctx and sMvctx */ } 883 PetscCall(MatAssemblyBegin(baij->B, mode)); 884 PetscCall(MatAssemblyEnd(baij->B, mode)); 885 886 PetscCall(PetscFree2(baij->rowvalues, baij->rowindices)); 887 888 baij->rowvalues = NULL; 889 890 /* if no new nonzero locations are allowed in matrix then only set the matrix state the first time through */ 891 if ((!mat->was_assembled && mode == MAT_FINAL_ASSEMBLY) || !((Mat_SeqBAIJ *)(baij->A->data))->nonew) { 892 PetscObjectState state = baij->A->nonzerostate + baij->B->nonzerostate; 893 PetscCall(MPIU_Allreduce(&state, &mat->nonzerostate, 1, MPIU_INT64, MPI_SUM, PetscObjectComm((PetscObject)mat))); 894 } 895 PetscFunctionReturn(PETSC_SUCCESS); 896 } 897 898 extern PetscErrorCode MatSetValues_MPIBAIJ(Mat, PetscInt, const PetscInt[], PetscInt, const PetscInt[], const PetscScalar[], InsertMode); 899 #include <petscdraw.h> 900 static PetscErrorCode MatView_MPISBAIJ_ASCIIorDraworSocket(Mat mat, PetscViewer viewer) 901 { 902 Mat_MPISBAIJ *baij = (Mat_MPISBAIJ *)mat->data; 903 PetscInt bs = mat->rmap->bs; 904 PetscMPIInt rank = baij->rank; 905 PetscBool iascii, isdraw; 906 PetscViewer sviewer; 907 PetscViewerFormat format; 908 909 PetscFunctionBegin; 910 PetscCall(PetscObjectTypeCompare((PetscObject)viewer, PETSCVIEWERASCII, &iascii)); 911 PetscCall(PetscObjectTypeCompare((PetscObject)viewer, PETSCVIEWERDRAW, &isdraw)); 912 if (iascii) { 913 PetscCall(PetscViewerGetFormat(viewer, &format)); 914 if (format == PETSC_VIEWER_ASCII_INFO_DETAIL) { 915 MatInfo info; 916 PetscCallMPI(MPI_Comm_rank(PetscObjectComm((PetscObject)mat), &rank)); 917 PetscCall(MatGetInfo(mat, MAT_LOCAL, &info)); 918 PetscCall(PetscViewerASCIIPushSynchronized(viewer)); 919 PetscCall(PetscViewerASCIISynchronizedPrintf(viewer, "[%d] Local rows %" PetscInt_FMT " nz %" PetscInt_FMT " nz alloced %" PetscInt_FMT " bs %" PetscInt_FMT " mem %g\n", rank, mat->rmap->n, (PetscInt)info.nz_used, (PetscInt)info.nz_allocated, 920 mat->rmap->bs, (double)info.memory)); 921 PetscCall(MatGetInfo(baij->A, MAT_LOCAL, &info)); 922 PetscCall(PetscViewerASCIISynchronizedPrintf(viewer, "[%d] on-diagonal part: nz %" PetscInt_FMT " \n", rank, (PetscInt)info.nz_used)); 923 PetscCall(MatGetInfo(baij->B, MAT_LOCAL, &info)); 924 PetscCall(PetscViewerASCIISynchronizedPrintf(viewer, "[%d] off-diagonal part: nz %" PetscInt_FMT " \n", rank, (PetscInt)info.nz_used)); 925 PetscCall(PetscViewerFlush(viewer)); 926 PetscCall(PetscViewerASCIIPopSynchronized(viewer)); 927 PetscCall(PetscViewerASCIIPrintf(viewer, "Information on VecScatter used in matrix-vector product: \n")); 928 PetscCall(VecScatterView(baij->Mvctx, viewer)); 929 PetscFunctionReturn(PETSC_SUCCESS); 930 } else if (format == PETSC_VIEWER_ASCII_INFO) { 931 PetscCall(PetscViewerASCIIPrintf(viewer, " block size is %" PetscInt_FMT "\n", bs)); 932 PetscFunctionReturn(PETSC_SUCCESS); 933 } else if (format == PETSC_VIEWER_ASCII_FACTOR_INFO) { 934 PetscFunctionReturn(PETSC_SUCCESS); 935 } 936 } 937 938 if (isdraw) { 939 PetscDraw draw; 940 PetscBool isnull; 941 PetscCall(PetscViewerDrawGetDraw(viewer, 0, &draw)); 942 PetscCall(PetscDrawIsNull(draw, &isnull)); 943 if (isnull) PetscFunctionReturn(PETSC_SUCCESS); 944 } 945 946 { 947 /* assemble the entire matrix onto first processor. */ 948 Mat A; 949 Mat_SeqSBAIJ *Aloc; 950 Mat_SeqBAIJ *Bloc; 951 PetscInt M = mat->rmap->N, N = mat->cmap->N, *ai, *aj, col, i, j, k, *rvals, mbs = baij->mbs; 952 MatScalar *a; 953 const char *matname; 954 955 /* Should this be the same type as mat? */ 956 PetscCall(MatCreate(PetscObjectComm((PetscObject)mat), &A)); 957 if (rank == 0) { 958 PetscCall(MatSetSizes(A, M, N, M, N)); 959 } else { 960 PetscCall(MatSetSizes(A, 0, 0, M, N)); 961 } 962 PetscCall(MatSetType(A, MATMPISBAIJ)); 963 PetscCall(MatMPISBAIJSetPreallocation(A, mat->rmap->bs, 0, NULL, 0, NULL)); 964 PetscCall(MatSetOption(A, MAT_NEW_NONZERO_LOCATION_ERR, PETSC_FALSE)); 965 966 /* copy over the A part */ 967 Aloc = (Mat_SeqSBAIJ *)baij->A->data; 968 ai = Aloc->i; 969 aj = Aloc->j; 970 a = Aloc->a; 971 PetscCall(PetscMalloc1(bs, &rvals)); 972 973 for (i = 0; i < mbs; i++) { 974 rvals[0] = bs * (baij->rstartbs + i); 975 for (j = 1; j < bs; j++) rvals[j] = rvals[j - 1] + 1; 976 for (j = ai[i]; j < ai[i + 1]; j++) { 977 col = (baij->cstartbs + aj[j]) * bs; 978 for (k = 0; k < bs; k++) { 979 PetscCall(MatSetValues_MPISBAIJ(A, bs, rvals, 1, &col, a, INSERT_VALUES)); 980 col++; 981 a += bs; 982 } 983 } 984 } 985 /* copy over the B part */ 986 Bloc = (Mat_SeqBAIJ *)baij->B->data; 987 ai = Bloc->i; 988 aj = Bloc->j; 989 a = Bloc->a; 990 for (i = 0; i < mbs; i++) { 991 rvals[0] = bs * (baij->rstartbs + i); 992 for (j = 1; j < bs; j++) rvals[j] = rvals[j - 1] + 1; 993 for (j = ai[i]; j < ai[i + 1]; j++) { 994 col = baij->garray[aj[j]] * bs; 995 for (k = 0; k < bs; k++) { 996 PetscCall(MatSetValues_MPIBAIJ(A, bs, rvals, 1, &col, a, INSERT_VALUES)); 997 col++; 998 a += bs; 999 } 1000 } 1001 } 1002 PetscCall(PetscFree(rvals)); 1003 PetscCall(MatAssemblyBegin(A, MAT_FINAL_ASSEMBLY)); 1004 PetscCall(MatAssemblyEnd(A, MAT_FINAL_ASSEMBLY)); 1005 /* 1006 Everyone has to call to draw the matrix since the graphics waits are 1007 synchronized across all processors that share the PetscDraw object 1008 */ 1009 PetscCall(PetscViewerGetSubViewer(viewer, PETSC_COMM_SELF, &sviewer)); 1010 if (((PetscObject)mat)->name) PetscCall(PetscObjectGetName((PetscObject)mat, &matname)); 1011 if (rank == 0) { 1012 if (((PetscObject)mat)->name) PetscCall(PetscObjectSetName((PetscObject)((Mat_MPISBAIJ *)(A->data))->A, matname)); 1013 PetscCall(MatView_SeqSBAIJ(((Mat_MPISBAIJ *)(A->data))->A, sviewer)); 1014 } 1015 PetscCall(PetscViewerRestoreSubViewer(viewer, PETSC_COMM_SELF, &sviewer)); 1016 PetscCall(PetscViewerFlush(viewer)); 1017 PetscCall(MatDestroy(&A)); 1018 } 1019 PetscFunctionReturn(PETSC_SUCCESS); 1020 } 1021 1022 /* Used for both MPIBAIJ and MPISBAIJ matrices */ 1023 #define MatView_MPISBAIJ_Binary MatView_MPIBAIJ_Binary 1024 1025 PetscErrorCode MatView_MPISBAIJ(Mat mat, PetscViewer viewer) 1026 { 1027 PetscBool iascii, isdraw, issocket, isbinary; 1028 1029 PetscFunctionBegin; 1030 PetscCall(PetscObjectTypeCompare((PetscObject)viewer, PETSCVIEWERASCII, &iascii)); 1031 PetscCall(PetscObjectTypeCompare((PetscObject)viewer, PETSCVIEWERDRAW, &isdraw)); 1032 PetscCall(PetscObjectTypeCompare((PetscObject)viewer, PETSCVIEWERSOCKET, &issocket)); 1033 PetscCall(PetscObjectTypeCompare((PetscObject)viewer, PETSCVIEWERBINARY, &isbinary)); 1034 if (iascii || isdraw || issocket) { 1035 PetscCall(MatView_MPISBAIJ_ASCIIorDraworSocket(mat, viewer)); 1036 } else if (isbinary) PetscCall(MatView_MPISBAIJ_Binary(mat, viewer)); 1037 PetscFunctionReturn(PETSC_SUCCESS); 1038 } 1039 1040 PetscErrorCode MatMult_MPISBAIJ_Hermitian(Mat A, Vec xx, Vec yy) 1041 { 1042 Mat_MPISBAIJ *a = (Mat_MPISBAIJ *)A->data; 1043 PetscInt mbs = a->mbs, bs = A->rmap->bs; 1044 PetscScalar *from; 1045 const PetscScalar *x; 1046 1047 PetscFunctionBegin; 1048 /* diagonal part */ 1049 PetscCall((*a->A->ops->mult)(a->A, xx, a->slvec1a)); 1050 /* since a->slvec1b shares memory (dangerously) with a->slec1 changes to a->slec1 will affect it */ 1051 PetscCall(PetscObjectStateIncrease((PetscObject)a->slvec1b)); 1052 PetscCall(VecZeroEntries(a->slvec1b)); 1053 1054 /* subdiagonal part */ 1055 PetscCheck(a->B->ops->multhermitiantranspose, PetscObjectComm((PetscObject)a->B), PETSC_ERR_SUP, "Not for type %s", ((PetscObject)a->B)->type_name); 1056 PetscCall((*a->B->ops->multhermitiantranspose)(a->B, xx, a->slvec0b)); 1057 1058 /* copy x into the vec slvec0 */ 1059 PetscCall(VecGetArray(a->slvec0, &from)); 1060 PetscCall(VecGetArrayRead(xx, &x)); 1061 1062 PetscCall(PetscArraycpy(from, x, bs * mbs)); 1063 PetscCall(VecRestoreArray(a->slvec0, &from)); 1064 PetscCall(VecRestoreArrayRead(xx, &x)); 1065 1066 PetscCall(VecScatterBegin(a->sMvctx, a->slvec0, a->slvec1, ADD_VALUES, SCATTER_FORWARD)); 1067 PetscCall(VecScatterEnd(a->sMvctx, a->slvec0, a->slvec1, ADD_VALUES, SCATTER_FORWARD)); 1068 /* supperdiagonal part */ 1069 PetscCall((*a->B->ops->multadd)(a->B, a->slvec1b, a->slvec1a, yy)); 1070 PetscFunctionReturn(PETSC_SUCCESS); 1071 } 1072 1073 PetscErrorCode MatMult_MPISBAIJ(Mat A, Vec xx, Vec yy) 1074 { 1075 Mat_MPISBAIJ *a = (Mat_MPISBAIJ *)A->data; 1076 PetscInt mbs = a->mbs, bs = A->rmap->bs; 1077 PetscScalar *from; 1078 const PetscScalar *x; 1079 1080 PetscFunctionBegin; 1081 /* diagonal part */ 1082 PetscCall((*a->A->ops->mult)(a->A, xx, a->slvec1a)); 1083 /* since a->slvec1b shares memory (dangerously) with a->slec1 changes to a->slec1 will affect it */ 1084 PetscCall(PetscObjectStateIncrease((PetscObject)a->slvec1b)); 1085 PetscCall(VecZeroEntries(a->slvec1b)); 1086 1087 /* subdiagonal part */ 1088 PetscCall((*a->B->ops->multtranspose)(a->B, xx, a->slvec0b)); 1089 1090 /* copy x into the vec slvec0 */ 1091 PetscCall(VecGetArray(a->slvec0, &from)); 1092 PetscCall(VecGetArrayRead(xx, &x)); 1093 1094 PetscCall(PetscArraycpy(from, x, bs * mbs)); 1095 PetscCall(VecRestoreArray(a->slvec0, &from)); 1096 PetscCall(VecRestoreArrayRead(xx, &x)); 1097 1098 PetscCall(VecScatterBegin(a->sMvctx, a->slvec0, a->slvec1, ADD_VALUES, SCATTER_FORWARD)); 1099 PetscCall(VecScatterEnd(a->sMvctx, a->slvec0, a->slvec1, ADD_VALUES, SCATTER_FORWARD)); 1100 /* supperdiagonal part */ 1101 PetscCall((*a->B->ops->multadd)(a->B, a->slvec1b, a->slvec1a, yy)); 1102 PetscFunctionReturn(PETSC_SUCCESS); 1103 } 1104 1105 PetscErrorCode MatMultAdd_MPISBAIJ_Hermitian(Mat A, Vec xx, Vec yy, Vec zz) 1106 { 1107 Mat_MPISBAIJ *a = (Mat_MPISBAIJ *)A->data; 1108 PetscInt mbs = a->mbs, bs = A->rmap->bs; 1109 PetscScalar *from; 1110 const PetscScalar *x; 1111 1112 PetscFunctionBegin; 1113 /* diagonal part */ 1114 PetscCall((*a->A->ops->multadd)(a->A, xx, yy, a->slvec1a)); 1115 PetscCall(PetscObjectStateIncrease((PetscObject)a->slvec1b)); 1116 PetscCall(VecZeroEntries(a->slvec1b)); 1117 1118 /* subdiagonal part */ 1119 PetscCheck(a->B->ops->multhermitiantranspose, PetscObjectComm((PetscObject)a->B), PETSC_ERR_SUP, "Not for type %s", ((PetscObject)a->B)->type_name); 1120 PetscCall((*a->B->ops->multhermitiantranspose)(a->B, xx, a->slvec0b)); 1121 1122 /* copy x into the vec slvec0 */ 1123 PetscCall(VecGetArray(a->slvec0, &from)); 1124 PetscCall(VecGetArrayRead(xx, &x)); 1125 PetscCall(PetscArraycpy(from, x, bs * mbs)); 1126 PetscCall(VecRestoreArray(a->slvec0, &from)); 1127 1128 PetscCall(VecScatterBegin(a->sMvctx, a->slvec0, a->slvec1, ADD_VALUES, SCATTER_FORWARD)); 1129 PetscCall(VecRestoreArrayRead(xx, &x)); 1130 PetscCall(VecScatterEnd(a->sMvctx, a->slvec0, a->slvec1, ADD_VALUES, SCATTER_FORWARD)); 1131 1132 /* supperdiagonal part */ 1133 PetscCall((*a->B->ops->multadd)(a->B, a->slvec1b, a->slvec1a, zz)); 1134 PetscFunctionReturn(PETSC_SUCCESS); 1135 } 1136 1137 PetscErrorCode MatMultAdd_MPISBAIJ(Mat A, Vec xx, Vec yy, Vec zz) 1138 { 1139 Mat_MPISBAIJ *a = (Mat_MPISBAIJ *)A->data; 1140 PetscInt mbs = a->mbs, bs = A->rmap->bs; 1141 PetscScalar *from; 1142 const PetscScalar *x; 1143 1144 PetscFunctionBegin; 1145 /* diagonal part */ 1146 PetscCall((*a->A->ops->multadd)(a->A, xx, yy, a->slvec1a)); 1147 PetscCall(PetscObjectStateIncrease((PetscObject)a->slvec1b)); 1148 PetscCall(VecZeroEntries(a->slvec1b)); 1149 1150 /* subdiagonal part */ 1151 PetscCall((*a->B->ops->multtranspose)(a->B, xx, a->slvec0b)); 1152 1153 /* copy x into the vec slvec0 */ 1154 PetscCall(VecGetArray(a->slvec0, &from)); 1155 PetscCall(VecGetArrayRead(xx, &x)); 1156 PetscCall(PetscArraycpy(from, x, bs * mbs)); 1157 PetscCall(VecRestoreArray(a->slvec0, &from)); 1158 1159 PetscCall(VecScatterBegin(a->sMvctx, a->slvec0, a->slvec1, ADD_VALUES, SCATTER_FORWARD)); 1160 PetscCall(VecRestoreArrayRead(xx, &x)); 1161 PetscCall(VecScatterEnd(a->sMvctx, a->slvec0, a->slvec1, ADD_VALUES, SCATTER_FORWARD)); 1162 1163 /* supperdiagonal part */ 1164 PetscCall((*a->B->ops->multadd)(a->B, a->slvec1b, a->slvec1a, zz)); 1165 PetscFunctionReturn(PETSC_SUCCESS); 1166 } 1167 1168 /* 1169 This only works correctly for square matrices where the subblock A->A is the 1170 diagonal block 1171 */ 1172 PetscErrorCode MatGetDiagonal_MPISBAIJ(Mat A, Vec v) 1173 { 1174 Mat_MPISBAIJ *a = (Mat_MPISBAIJ *)A->data; 1175 1176 PetscFunctionBegin; 1177 /* PetscCheck(a->rmap->N == a->cmap->N,PETSC_COMM_SELF,PETSC_ERR_SUP,"Supports only square matrix where A->A is diag block"); */ 1178 PetscCall(MatGetDiagonal(a->A, v)); 1179 PetscFunctionReturn(PETSC_SUCCESS); 1180 } 1181 1182 PetscErrorCode MatScale_MPISBAIJ(Mat A, PetscScalar aa) 1183 { 1184 Mat_MPISBAIJ *a = (Mat_MPISBAIJ *)A->data; 1185 1186 PetscFunctionBegin; 1187 PetscCall(MatScale(a->A, aa)); 1188 PetscCall(MatScale(a->B, aa)); 1189 PetscFunctionReturn(PETSC_SUCCESS); 1190 } 1191 1192 PetscErrorCode MatGetRow_MPISBAIJ(Mat matin, PetscInt row, PetscInt *nz, PetscInt **idx, PetscScalar **v) 1193 { 1194 Mat_MPISBAIJ *mat = (Mat_MPISBAIJ *)matin->data; 1195 PetscScalar *vworkA, *vworkB, **pvA, **pvB, *v_p; 1196 PetscInt bs = matin->rmap->bs, bs2 = mat->bs2, i, *cworkA, *cworkB, **pcA, **pcB; 1197 PetscInt nztot, nzA, nzB, lrow, brstart = matin->rmap->rstart, brend = matin->rmap->rend; 1198 PetscInt *cmap, *idx_p, cstart = mat->rstartbs; 1199 1200 PetscFunctionBegin; 1201 PetscCheck(!mat->getrowactive, PETSC_COMM_SELF, PETSC_ERR_ARG_WRONGSTATE, "Already active"); 1202 mat->getrowactive = PETSC_TRUE; 1203 1204 if (!mat->rowvalues && (idx || v)) { 1205 /* 1206 allocate enough space to hold information from the longest row. 1207 */ 1208 Mat_SeqSBAIJ *Aa = (Mat_SeqSBAIJ *)mat->A->data; 1209 Mat_SeqBAIJ *Ba = (Mat_SeqBAIJ *)mat->B->data; 1210 PetscInt max = 1, mbs = mat->mbs, tmp; 1211 for (i = 0; i < mbs; i++) { 1212 tmp = Aa->i[i + 1] - Aa->i[i] + Ba->i[i + 1] - Ba->i[i]; /* row length */ 1213 if (max < tmp) max = tmp; 1214 } 1215 PetscCall(PetscMalloc2(max * bs2, &mat->rowvalues, max * bs2, &mat->rowindices)); 1216 } 1217 1218 PetscCheck(row >= brstart && row < brend, PETSC_COMM_SELF, PETSC_ERR_SUP, "Only local rows"); 1219 lrow = row - brstart; /* local row index */ 1220 1221 pvA = &vworkA; 1222 pcA = &cworkA; 1223 pvB = &vworkB; 1224 pcB = &cworkB; 1225 if (!v) { 1226 pvA = NULL; 1227 pvB = NULL; 1228 } 1229 if (!idx) { 1230 pcA = NULL; 1231 if (!v) pcB = NULL; 1232 } 1233 PetscCall((*mat->A->ops->getrow)(mat->A, lrow, &nzA, pcA, pvA)); 1234 PetscCall((*mat->B->ops->getrow)(mat->B, lrow, &nzB, pcB, pvB)); 1235 nztot = nzA + nzB; 1236 1237 cmap = mat->garray; 1238 if (v || idx) { 1239 if (nztot) { 1240 /* Sort by increasing column numbers, assuming A and B already sorted */ 1241 PetscInt imark = -1; 1242 if (v) { 1243 *v = v_p = mat->rowvalues; 1244 for (i = 0; i < nzB; i++) { 1245 if (cmap[cworkB[i] / bs] < cstart) v_p[i] = vworkB[i]; 1246 else break; 1247 } 1248 imark = i; 1249 for (i = 0; i < nzA; i++) v_p[imark + i] = vworkA[i]; 1250 for (i = imark; i < nzB; i++) v_p[nzA + i] = vworkB[i]; 1251 } 1252 if (idx) { 1253 *idx = idx_p = mat->rowindices; 1254 if (imark > -1) { 1255 for (i = 0; i < imark; i++) idx_p[i] = cmap[cworkB[i] / bs] * bs + cworkB[i] % bs; 1256 } else { 1257 for (i = 0; i < nzB; i++) { 1258 if (cmap[cworkB[i] / bs] < cstart) idx_p[i] = cmap[cworkB[i] / bs] * bs + cworkB[i] % bs; 1259 else break; 1260 } 1261 imark = i; 1262 } 1263 for (i = 0; i < nzA; i++) idx_p[imark + i] = cstart * bs + cworkA[i]; 1264 for (i = imark; i < nzB; i++) idx_p[nzA + i] = cmap[cworkB[i] / bs] * bs + cworkB[i] % bs; 1265 } 1266 } else { 1267 if (idx) *idx = NULL; 1268 if (v) *v = NULL; 1269 } 1270 } 1271 *nz = nztot; 1272 PetscCall((*mat->A->ops->restorerow)(mat->A, lrow, &nzA, pcA, pvA)); 1273 PetscCall((*mat->B->ops->restorerow)(mat->B, lrow, &nzB, pcB, pvB)); 1274 PetscFunctionReturn(PETSC_SUCCESS); 1275 } 1276 1277 PetscErrorCode MatRestoreRow_MPISBAIJ(Mat mat, PetscInt row, PetscInt *nz, PetscInt **idx, PetscScalar **v) 1278 { 1279 Mat_MPISBAIJ *baij = (Mat_MPISBAIJ *)mat->data; 1280 1281 PetscFunctionBegin; 1282 PetscCheck(baij->getrowactive, PETSC_COMM_SELF, PETSC_ERR_ARG_WRONGSTATE, "MatGetRow() must be called first"); 1283 baij->getrowactive = PETSC_FALSE; 1284 PetscFunctionReturn(PETSC_SUCCESS); 1285 } 1286 1287 PetscErrorCode MatGetRowUpperTriangular_MPISBAIJ(Mat A) 1288 { 1289 Mat_MPISBAIJ *a = (Mat_MPISBAIJ *)A->data; 1290 Mat_SeqSBAIJ *aA = (Mat_SeqSBAIJ *)a->A->data; 1291 1292 PetscFunctionBegin; 1293 aA->getrow_utriangular = PETSC_TRUE; 1294 PetscFunctionReturn(PETSC_SUCCESS); 1295 } 1296 PetscErrorCode MatRestoreRowUpperTriangular_MPISBAIJ(Mat A) 1297 { 1298 Mat_MPISBAIJ *a = (Mat_MPISBAIJ *)A->data; 1299 Mat_SeqSBAIJ *aA = (Mat_SeqSBAIJ *)a->A->data; 1300 1301 PetscFunctionBegin; 1302 aA->getrow_utriangular = PETSC_FALSE; 1303 PetscFunctionReturn(PETSC_SUCCESS); 1304 } 1305 1306 PetscErrorCode MatConjugate_MPISBAIJ(Mat mat) 1307 { 1308 PetscFunctionBegin; 1309 if (PetscDefined(USE_COMPLEX)) { 1310 Mat_MPISBAIJ *a = (Mat_MPISBAIJ *)mat->data; 1311 1312 PetscCall(MatConjugate(a->A)); 1313 PetscCall(MatConjugate(a->B)); 1314 } 1315 PetscFunctionReturn(PETSC_SUCCESS); 1316 } 1317 1318 PetscErrorCode MatRealPart_MPISBAIJ(Mat A) 1319 { 1320 Mat_MPISBAIJ *a = (Mat_MPISBAIJ *)A->data; 1321 1322 PetscFunctionBegin; 1323 PetscCall(MatRealPart(a->A)); 1324 PetscCall(MatRealPart(a->B)); 1325 PetscFunctionReturn(PETSC_SUCCESS); 1326 } 1327 1328 PetscErrorCode MatImaginaryPart_MPISBAIJ(Mat A) 1329 { 1330 Mat_MPISBAIJ *a = (Mat_MPISBAIJ *)A->data; 1331 1332 PetscFunctionBegin; 1333 PetscCall(MatImaginaryPart(a->A)); 1334 PetscCall(MatImaginaryPart(a->B)); 1335 PetscFunctionReturn(PETSC_SUCCESS); 1336 } 1337 1338 /* Check if isrow is a subset of iscol_local, called by MatCreateSubMatrix_MPISBAIJ() 1339 Input: isrow - distributed(parallel), 1340 iscol_local - locally owned (seq) 1341 */ 1342 PetscErrorCode ISEqual_private(IS isrow, IS iscol_local, PetscBool *flg) 1343 { 1344 PetscInt sz1, sz2, *a1, *a2, i, j, k, nmatch; 1345 const PetscInt *ptr1, *ptr2; 1346 1347 PetscFunctionBegin; 1348 PetscCall(ISGetLocalSize(isrow, &sz1)); 1349 PetscCall(ISGetLocalSize(iscol_local, &sz2)); 1350 if (sz1 > sz2) { 1351 *flg = PETSC_FALSE; 1352 PetscFunctionReturn(PETSC_SUCCESS); 1353 } 1354 1355 PetscCall(ISGetIndices(isrow, &ptr1)); 1356 PetscCall(ISGetIndices(iscol_local, &ptr2)); 1357 1358 PetscCall(PetscMalloc1(sz1, &a1)); 1359 PetscCall(PetscMalloc1(sz2, &a2)); 1360 PetscCall(PetscArraycpy(a1, ptr1, sz1)); 1361 PetscCall(PetscArraycpy(a2, ptr2, sz2)); 1362 PetscCall(PetscSortInt(sz1, a1)); 1363 PetscCall(PetscSortInt(sz2, a2)); 1364 1365 nmatch = 0; 1366 k = 0; 1367 for (i = 0; i < sz1; i++) { 1368 for (j = k; j < sz2; j++) { 1369 if (a1[i] == a2[j]) { 1370 k = j; 1371 nmatch++; 1372 break; 1373 } 1374 } 1375 } 1376 PetscCall(ISRestoreIndices(isrow, &ptr1)); 1377 PetscCall(ISRestoreIndices(iscol_local, &ptr2)); 1378 PetscCall(PetscFree(a1)); 1379 PetscCall(PetscFree(a2)); 1380 if (nmatch < sz1) { 1381 *flg = PETSC_FALSE; 1382 } else { 1383 *flg = PETSC_TRUE; 1384 } 1385 PetscFunctionReturn(PETSC_SUCCESS); 1386 } 1387 1388 PetscErrorCode MatCreateSubMatrix_MPISBAIJ(Mat mat, IS isrow, IS iscol, MatReuse call, Mat *newmat) 1389 { 1390 IS iscol_local; 1391 PetscInt csize; 1392 PetscBool isequal; 1393 1394 PetscFunctionBegin; 1395 PetscCall(ISGetLocalSize(iscol, &csize)); 1396 if (call == MAT_REUSE_MATRIX) { 1397 PetscCall(PetscObjectQuery((PetscObject)*newmat, "ISAllGather", (PetscObject *)&iscol_local)); 1398 PetscCheck(iscol_local, PETSC_COMM_SELF, PETSC_ERR_ARG_WRONGSTATE, "Submatrix passed in was not used before, cannot reuse"); 1399 } else { 1400 PetscBool issorted; 1401 1402 PetscCall(ISAllGather(iscol, &iscol_local)); 1403 PetscCall(ISEqual_private(isrow, iscol_local, &isequal)); 1404 PetscCall(ISSorted(iscol_local, &issorted)); 1405 PetscCheck(isequal && issorted, PETSC_COMM_SELF, PETSC_ERR_ARG_INCOMP, "For symmetric format, iscol must equal isrow and be sorted"); 1406 } 1407 1408 /* now call MatCreateSubMatrix_MPIBAIJ() */ 1409 PetscCall(MatCreateSubMatrix_MPIBAIJ_Private(mat, isrow, iscol_local, csize, call, newmat)); 1410 if (call == MAT_INITIAL_MATRIX) { 1411 PetscCall(PetscObjectCompose((PetscObject)*newmat, "ISAllGather", (PetscObject)iscol_local)); 1412 PetscCall(ISDestroy(&iscol_local)); 1413 } 1414 PetscFunctionReturn(PETSC_SUCCESS); 1415 } 1416 1417 PetscErrorCode MatZeroEntries_MPISBAIJ(Mat A) 1418 { 1419 Mat_MPISBAIJ *l = (Mat_MPISBAIJ *)A->data; 1420 1421 PetscFunctionBegin; 1422 PetscCall(MatZeroEntries(l->A)); 1423 PetscCall(MatZeroEntries(l->B)); 1424 PetscFunctionReturn(PETSC_SUCCESS); 1425 } 1426 1427 PetscErrorCode MatGetInfo_MPISBAIJ(Mat matin, MatInfoType flag, MatInfo *info) 1428 { 1429 Mat_MPISBAIJ *a = (Mat_MPISBAIJ *)matin->data; 1430 Mat A = a->A, B = a->B; 1431 PetscLogDouble isend[5], irecv[5]; 1432 1433 PetscFunctionBegin; 1434 info->block_size = (PetscReal)matin->rmap->bs; 1435 1436 PetscCall(MatGetInfo(A, MAT_LOCAL, info)); 1437 1438 isend[0] = info->nz_used; 1439 isend[1] = info->nz_allocated; 1440 isend[2] = info->nz_unneeded; 1441 isend[3] = info->memory; 1442 isend[4] = info->mallocs; 1443 1444 PetscCall(MatGetInfo(B, MAT_LOCAL, info)); 1445 1446 isend[0] += info->nz_used; 1447 isend[1] += info->nz_allocated; 1448 isend[2] += info->nz_unneeded; 1449 isend[3] += info->memory; 1450 isend[4] += info->mallocs; 1451 if (flag == MAT_LOCAL) { 1452 info->nz_used = isend[0]; 1453 info->nz_allocated = isend[1]; 1454 info->nz_unneeded = isend[2]; 1455 info->memory = isend[3]; 1456 info->mallocs = isend[4]; 1457 } else if (flag == MAT_GLOBAL_MAX) { 1458 PetscCall(MPIU_Allreduce(isend, irecv, 5, MPIU_PETSCLOGDOUBLE, MPI_MAX, PetscObjectComm((PetscObject)matin))); 1459 1460 info->nz_used = irecv[0]; 1461 info->nz_allocated = irecv[1]; 1462 info->nz_unneeded = irecv[2]; 1463 info->memory = irecv[3]; 1464 info->mallocs = irecv[4]; 1465 } else if (flag == MAT_GLOBAL_SUM) { 1466 PetscCall(MPIU_Allreduce(isend, irecv, 5, MPIU_PETSCLOGDOUBLE, MPI_SUM, PetscObjectComm((PetscObject)matin))); 1467 1468 info->nz_used = irecv[0]; 1469 info->nz_allocated = irecv[1]; 1470 info->nz_unneeded = irecv[2]; 1471 info->memory = irecv[3]; 1472 info->mallocs = irecv[4]; 1473 } else SETERRQ(PETSC_COMM_SELF, PETSC_ERR_ARG_WRONG, "Unknown MatInfoType argument %d", (int)flag); 1474 info->fill_ratio_given = 0; /* no parallel LU/ILU/Cholesky */ 1475 info->fill_ratio_needed = 0; 1476 info->factor_mallocs = 0; 1477 PetscFunctionReturn(PETSC_SUCCESS); 1478 } 1479 1480 PetscErrorCode MatSetOption_MPISBAIJ(Mat A, MatOption op, PetscBool flg) 1481 { 1482 Mat_MPISBAIJ *a = (Mat_MPISBAIJ *)A->data; 1483 Mat_SeqSBAIJ *aA = (Mat_SeqSBAIJ *)a->A->data; 1484 1485 PetscFunctionBegin; 1486 switch (op) { 1487 case MAT_NEW_NONZERO_LOCATIONS: 1488 case MAT_NEW_NONZERO_ALLOCATION_ERR: 1489 case MAT_UNUSED_NONZERO_LOCATION_ERR: 1490 case MAT_KEEP_NONZERO_PATTERN: 1491 case MAT_SUBMAT_SINGLEIS: 1492 case MAT_NEW_NONZERO_LOCATION_ERR: 1493 MatCheckPreallocated(A, 1); 1494 PetscCall(MatSetOption(a->A, op, flg)); 1495 PetscCall(MatSetOption(a->B, op, flg)); 1496 break; 1497 case MAT_ROW_ORIENTED: 1498 MatCheckPreallocated(A, 1); 1499 a->roworiented = flg; 1500 1501 PetscCall(MatSetOption(a->A, op, flg)); 1502 PetscCall(MatSetOption(a->B, op, flg)); 1503 break; 1504 case MAT_FORCE_DIAGONAL_ENTRIES: 1505 case MAT_SORTED_FULL: 1506 PetscCall(PetscInfo(A, "Option %s ignored\n", MatOptions[op])); 1507 break; 1508 case MAT_IGNORE_OFF_PROC_ENTRIES: 1509 a->donotstash = flg; 1510 break; 1511 case MAT_USE_HASH_TABLE: 1512 a->ht_flag = flg; 1513 break; 1514 case MAT_HERMITIAN: 1515 MatCheckPreallocated(A, 1); 1516 PetscCall(MatSetOption(a->A, op, flg)); 1517 #if defined(PETSC_USE_COMPLEX) 1518 if (flg) { /* need different mat-vec ops */ 1519 A->ops->mult = MatMult_MPISBAIJ_Hermitian; 1520 A->ops->multadd = MatMultAdd_MPISBAIJ_Hermitian; 1521 A->ops->multtranspose = NULL; 1522 A->ops->multtransposeadd = NULL; 1523 A->symmetric = PETSC_BOOL3_FALSE; 1524 } 1525 #endif 1526 break; 1527 case MAT_SPD: 1528 case MAT_SYMMETRIC: 1529 MatCheckPreallocated(A, 1); 1530 PetscCall(MatSetOption(a->A, op, flg)); 1531 #if defined(PETSC_USE_COMPLEX) 1532 if (flg) { /* restore to use default mat-vec ops */ 1533 A->ops->mult = MatMult_MPISBAIJ; 1534 A->ops->multadd = MatMultAdd_MPISBAIJ; 1535 A->ops->multtranspose = MatMult_MPISBAIJ; 1536 A->ops->multtransposeadd = MatMultAdd_MPISBAIJ; 1537 } 1538 #endif 1539 break; 1540 case MAT_STRUCTURALLY_SYMMETRIC: 1541 MatCheckPreallocated(A, 1); 1542 PetscCall(MatSetOption(a->A, op, flg)); 1543 break; 1544 case MAT_SYMMETRY_ETERNAL: 1545 case MAT_STRUCTURAL_SYMMETRY_ETERNAL: 1546 PetscCheck(flg, PETSC_COMM_SELF, PETSC_ERR_SUP, "Matrix must be symmetric"); 1547 PetscCall(PetscInfo(A, "Option %s ignored\n", MatOptions[op])); 1548 break; 1549 case MAT_SPD_ETERNAL: 1550 break; 1551 case MAT_IGNORE_LOWER_TRIANGULAR: 1552 aA->ignore_ltriangular = flg; 1553 break; 1554 case MAT_ERROR_LOWER_TRIANGULAR: 1555 aA->ignore_ltriangular = flg; 1556 break; 1557 case MAT_GETROW_UPPERTRIANGULAR: 1558 aA->getrow_utriangular = flg; 1559 break; 1560 default: 1561 SETERRQ(PETSC_COMM_SELF, PETSC_ERR_SUP, "unknown option %d", op); 1562 } 1563 PetscFunctionReturn(PETSC_SUCCESS); 1564 } 1565 1566 PetscErrorCode MatTranspose_MPISBAIJ(Mat A, MatReuse reuse, Mat *B) 1567 { 1568 PetscFunctionBegin; 1569 if (reuse == MAT_REUSE_MATRIX) PetscCall(MatTransposeCheckNonzeroState_Private(A, *B)); 1570 if (reuse == MAT_INITIAL_MATRIX) { 1571 PetscCall(MatDuplicate(A, MAT_COPY_VALUES, B)); 1572 } else if (reuse == MAT_REUSE_MATRIX) { 1573 PetscCall(MatCopy(A, *B, SAME_NONZERO_PATTERN)); 1574 } 1575 PetscFunctionReturn(PETSC_SUCCESS); 1576 } 1577 1578 PetscErrorCode MatDiagonalScale_MPISBAIJ(Mat mat, Vec ll, Vec rr) 1579 { 1580 Mat_MPISBAIJ *baij = (Mat_MPISBAIJ *)mat->data; 1581 Mat a = baij->A, b = baij->B; 1582 PetscInt nv, m, n; 1583 PetscBool flg; 1584 1585 PetscFunctionBegin; 1586 if (ll != rr) { 1587 PetscCall(VecEqual(ll, rr, &flg)); 1588 PetscCheck(flg, PETSC_COMM_SELF, PETSC_ERR_ARG_OUTOFRANGE, "For symmetric format, left and right scaling vectors must be same"); 1589 } 1590 if (!ll) PetscFunctionReturn(PETSC_SUCCESS); 1591 1592 PetscCall(MatGetLocalSize(mat, &m, &n)); 1593 PetscCheck(m == n, PETSC_COMM_SELF, PETSC_ERR_ARG_SIZ, "For symmetric format, local size %" PetscInt_FMT " %" PetscInt_FMT " must be same", m, n); 1594 1595 PetscCall(VecGetLocalSize(rr, &nv)); 1596 PetscCheck(nv == n, PETSC_COMM_SELF, PETSC_ERR_ARG_SIZ, "Left and right vector non-conforming local size"); 1597 1598 PetscCall(VecScatterBegin(baij->Mvctx, rr, baij->lvec, INSERT_VALUES, SCATTER_FORWARD)); 1599 1600 /* left diagonalscale the off-diagonal part */ 1601 PetscUseTypeMethod(b, diagonalscale, ll, NULL); 1602 1603 /* scale the diagonal part */ 1604 PetscUseTypeMethod(a, diagonalscale, ll, rr); 1605 1606 /* right diagonalscale the off-diagonal part */ 1607 PetscCall(VecScatterEnd(baij->Mvctx, rr, baij->lvec, INSERT_VALUES, SCATTER_FORWARD)); 1608 PetscUseTypeMethod(b, diagonalscale, NULL, baij->lvec); 1609 PetscFunctionReturn(PETSC_SUCCESS); 1610 } 1611 1612 PetscErrorCode MatSetUnfactored_MPISBAIJ(Mat A) 1613 { 1614 Mat_MPISBAIJ *a = (Mat_MPISBAIJ *)A->data; 1615 1616 PetscFunctionBegin; 1617 PetscCall(MatSetUnfactored(a->A)); 1618 PetscFunctionReturn(PETSC_SUCCESS); 1619 } 1620 1621 static PetscErrorCode MatDuplicate_MPISBAIJ(Mat, MatDuplicateOption, Mat *); 1622 1623 PetscErrorCode MatEqual_MPISBAIJ(Mat A, Mat B, PetscBool *flag) 1624 { 1625 Mat_MPISBAIJ *matB = (Mat_MPISBAIJ *)B->data, *matA = (Mat_MPISBAIJ *)A->data; 1626 Mat a, b, c, d; 1627 PetscBool flg; 1628 1629 PetscFunctionBegin; 1630 a = matA->A; 1631 b = matA->B; 1632 c = matB->A; 1633 d = matB->B; 1634 1635 PetscCall(MatEqual(a, c, &flg)); 1636 if (flg) PetscCall(MatEqual(b, d, &flg)); 1637 PetscCall(MPIU_Allreduce(&flg, flag, 1, MPIU_BOOL, MPI_LAND, PetscObjectComm((PetscObject)A))); 1638 PetscFunctionReturn(PETSC_SUCCESS); 1639 } 1640 1641 PetscErrorCode MatCopy_MPISBAIJ(Mat A, Mat B, MatStructure str) 1642 { 1643 PetscBool isbaij; 1644 1645 PetscFunctionBegin; 1646 PetscCall(PetscObjectTypeCompareAny((PetscObject)B, &isbaij, MATSEQSBAIJ, MATMPISBAIJ, "")); 1647 PetscCheck(isbaij, PetscObjectComm((PetscObject)B), PETSC_ERR_SUP, "Not for matrix type %s", ((PetscObject)B)->type_name); 1648 /* If the two matrices don't have the same copy implementation, they aren't compatible for fast copy. */ 1649 if ((str != SAME_NONZERO_PATTERN) || (A->ops->copy != B->ops->copy)) { 1650 PetscCall(MatGetRowUpperTriangular(A)); 1651 PetscCall(MatCopy_Basic(A, B, str)); 1652 PetscCall(MatRestoreRowUpperTriangular(A)); 1653 } else { 1654 Mat_MPISBAIJ *a = (Mat_MPISBAIJ *)A->data; 1655 Mat_MPISBAIJ *b = (Mat_MPISBAIJ *)B->data; 1656 1657 PetscCall(MatCopy(a->A, b->A, str)); 1658 PetscCall(MatCopy(a->B, b->B, str)); 1659 } 1660 PetscCall(PetscObjectStateIncrease((PetscObject)B)); 1661 PetscFunctionReturn(PETSC_SUCCESS); 1662 } 1663 1664 PetscErrorCode MatAXPY_MPISBAIJ(Mat Y, PetscScalar a, Mat X, MatStructure str) 1665 { 1666 Mat_MPISBAIJ *xx = (Mat_MPISBAIJ *)X->data, *yy = (Mat_MPISBAIJ *)Y->data; 1667 PetscBLASInt bnz, one = 1; 1668 Mat_SeqSBAIJ *xa, *ya; 1669 Mat_SeqBAIJ *xb, *yb; 1670 1671 PetscFunctionBegin; 1672 if (str == SAME_NONZERO_PATTERN) { 1673 PetscScalar alpha = a; 1674 xa = (Mat_SeqSBAIJ *)xx->A->data; 1675 ya = (Mat_SeqSBAIJ *)yy->A->data; 1676 PetscCall(PetscBLASIntCast(xa->nz, &bnz)); 1677 PetscCallBLAS("BLASaxpy", BLASaxpy_(&bnz, &alpha, xa->a, &one, ya->a, &one)); 1678 xb = (Mat_SeqBAIJ *)xx->B->data; 1679 yb = (Mat_SeqBAIJ *)yy->B->data; 1680 PetscCall(PetscBLASIntCast(xb->nz, &bnz)); 1681 PetscCallBLAS("BLASaxpy", BLASaxpy_(&bnz, &alpha, xb->a, &one, yb->a, &one)); 1682 PetscCall(PetscObjectStateIncrease((PetscObject)Y)); 1683 } else if (str == SUBSET_NONZERO_PATTERN) { /* nonzeros of X is a subset of Y's */ 1684 PetscCall(MatSetOption(X, MAT_GETROW_UPPERTRIANGULAR, PETSC_TRUE)); 1685 PetscCall(MatAXPY_Basic(Y, a, X, str)); 1686 PetscCall(MatSetOption(X, MAT_GETROW_UPPERTRIANGULAR, PETSC_FALSE)); 1687 } else { 1688 Mat B; 1689 PetscInt *nnz_d, *nnz_o, bs = Y->rmap->bs; 1690 PetscCheck(bs == X->rmap->bs, PETSC_COMM_SELF, PETSC_ERR_ARG_SIZ, "Matrices must have same block size"); 1691 PetscCall(MatGetRowUpperTriangular(X)); 1692 PetscCall(MatGetRowUpperTriangular(Y)); 1693 PetscCall(PetscMalloc1(yy->A->rmap->N, &nnz_d)); 1694 PetscCall(PetscMalloc1(yy->B->rmap->N, &nnz_o)); 1695 PetscCall(MatCreate(PetscObjectComm((PetscObject)Y), &B)); 1696 PetscCall(PetscObjectSetName((PetscObject)B, ((PetscObject)Y)->name)); 1697 PetscCall(MatSetSizes(B, Y->rmap->n, Y->cmap->n, Y->rmap->N, Y->cmap->N)); 1698 PetscCall(MatSetBlockSizesFromMats(B, Y, Y)); 1699 PetscCall(MatSetType(B, MATMPISBAIJ)); 1700 PetscCall(MatAXPYGetPreallocation_SeqSBAIJ(yy->A, xx->A, nnz_d)); 1701 PetscCall(MatAXPYGetPreallocation_MPIBAIJ(yy->B, yy->garray, xx->B, xx->garray, nnz_o)); 1702 PetscCall(MatMPISBAIJSetPreallocation(B, bs, 0, nnz_d, 0, nnz_o)); 1703 PetscCall(MatAXPY_BasicWithPreallocation(B, Y, a, X, str)); 1704 PetscCall(MatHeaderMerge(Y, &B)); 1705 PetscCall(PetscFree(nnz_d)); 1706 PetscCall(PetscFree(nnz_o)); 1707 PetscCall(MatRestoreRowUpperTriangular(X)); 1708 PetscCall(MatRestoreRowUpperTriangular(Y)); 1709 } 1710 PetscFunctionReturn(PETSC_SUCCESS); 1711 } 1712 1713 PetscErrorCode MatCreateSubMatrices_MPISBAIJ(Mat A, PetscInt n, const IS irow[], const IS icol[], MatReuse scall, Mat *B[]) 1714 { 1715 PetscInt i; 1716 PetscBool flg; 1717 1718 PetscFunctionBegin; 1719 PetscCall(MatCreateSubMatrices_MPIBAIJ(A, n, irow, icol, scall, B)); /* B[] are sbaij matrices */ 1720 for (i = 0; i < n; i++) { 1721 PetscCall(ISEqual(irow[i], icol[i], &flg)); 1722 if (!flg) PetscCall(MatSeqSBAIJZeroOps_Private(*B[i])); 1723 } 1724 PetscFunctionReturn(PETSC_SUCCESS); 1725 } 1726 1727 PetscErrorCode MatShift_MPISBAIJ(Mat Y, PetscScalar a) 1728 { 1729 Mat_MPISBAIJ *maij = (Mat_MPISBAIJ *)Y->data; 1730 Mat_SeqSBAIJ *aij = (Mat_SeqSBAIJ *)maij->A->data; 1731 1732 PetscFunctionBegin; 1733 if (!Y->preallocated) { 1734 PetscCall(MatMPISBAIJSetPreallocation(Y, Y->rmap->bs, 1, NULL, 0, NULL)); 1735 } else if (!aij->nz) { 1736 PetscInt nonew = aij->nonew; 1737 PetscCall(MatSeqSBAIJSetPreallocation(maij->A, Y->rmap->bs, 1, NULL)); 1738 aij->nonew = nonew; 1739 } 1740 PetscCall(MatShift_Basic(Y, a)); 1741 PetscFunctionReturn(PETSC_SUCCESS); 1742 } 1743 1744 PetscErrorCode MatMissingDiagonal_MPISBAIJ(Mat A, PetscBool *missing, PetscInt *d) 1745 { 1746 Mat_MPISBAIJ *a = (Mat_MPISBAIJ *)A->data; 1747 1748 PetscFunctionBegin; 1749 PetscCheck(A->rmap->n == A->cmap->n, PETSC_COMM_SELF, PETSC_ERR_SUP, "Only works for square matrices"); 1750 PetscCall(MatMissingDiagonal(a->A, missing, d)); 1751 if (d) { 1752 PetscInt rstart; 1753 PetscCall(MatGetOwnershipRange(A, &rstart, NULL)); 1754 *d += rstart / A->rmap->bs; 1755 } 1756 PetscFunctionReturn(PETSC_SUCCESS); 1757 } 1758 1759 PetscErrorCode MatGetDiagonalBlock_MPISBAIJ(Mat A, Mat *a) 1760 { 1761 PetscFunctionBegin; 1762 *a = ((Mat_MPISBAIJ *)A->data)->A; 1763 PetscFunctionReturn(PETSC_SUCCESS); 1764 } 1765 1766 static struct _MatOps MatOps_Values = {MatSetValues_MPISBAIJ, 1767 MatGetRow_MPISBAIJ, 1768 MatRestoreRow_MPISBAIJ, 1769 MatMult_MPISBAIJ, 1770 /* 4*/ MatMultAdd_MPISBAIJ, 1771 MatMult_MPISBAIJ, /* transpose versions are same as non-transpose */ 1772 MatMultAdd_MPISBAIJ, 1773 NULL, 1774 NULL, 1775 NULL, 1776 /* 10*/ NULL, 1777 NULL, 1778 NULL, 1779 MatSOR_MPISBAIJ, 1780 MatTranspose_MPISBAIJ, 1781 /* 15*/ MatGetInfo_MPISBAIJ, 1782 MatEqual_MPISBAIJ, 1783 MatGetDiagonal_MPISBAIJ, 1784 MatDiagonalScale_MPISBAIJ, 1785 MatNorm_MPISBAIJ, 1786 /* 20*/ MatAssemblyBegin_MPISBAIJ, 1787 MatAssemblyEnd_MPISBAIJ, 1788 MatSetOption_MPISBAIJ, 1789 MatZeroEntries_MPISBAIJ, 1790 /* 24*/ NULL, 1791 NULL, 1792 NULL, 1793 NULL, 1794 NULL, 1795 /* 29*/ MatSetUp_MPI_Hash, 1796 NULL, 1797 NULL, 1798 MatGetDiagonalBlock_MPISBAIJ, 1799 NULL, 1800 /* 34*/ MatDuplicate_MPISBAIJ, 1801 NULL, 1802 NULL, 1803 NULL, 1804 NULL, 1805 /* 39*/ MatAXPY_MPISBAIJ, 1806 MatCreateSubMatrices_MPISBAIJ, 1807 MatIncreaseOverlap_MPISBAIJ, 1808 MatGetValues_MPISBAIJ, 1809 MatCopy_MPISBAIJ, 1810 /* 44*/ NULL, 1811 MatScale_MPISBAIJ, 1812 MatShift_MPISBAIJ, 1813 NULL, 1814 NULL, 1815 /* 49*/ NULL, 1816 NULL, 1817 NULL, 1818 NULL, 1819 NULL, 1820 /* 54*/ NULL, 1821 NULL, 1822 MatSetUnfactored_MPISBAIJ, 1823 NULL, 1824 MatSetValuesBlocked_MPISBAIJ, 1825 /* 59*/ MatCreateSubMatrix_MPISBAIJ, 1826 NULL, 1827 NULL, 1828 NULL, 1829 NULL, 1830 /* 64*/ NULL, 1831 NULL, 1832 NULL, 1833 NULL, 1834 NULL, 1835 /* 69*/ MatGetRowMaxAbs_MPISBAIJ, 1836 NULL, 1837 MatConvert_MPISBAIJ_Basic, 1838 NULL, 1839 NULL, 1840 /* 74*/ NULL, 1841 NULL, 1842 NULL, 1843 NULL, 1844 NULL, 1845 /* 79*/ NULL, 1846 NULL, 1847 NULL, 1848 NULL, 1849 MatLoad_MPISBAIJ, 1850 /* 84*/ NULL, 1851 NULL, 1852 NULL, 1853 NULL, 1854 NULL, 1855 /* 89*/ NULL, 1856 NULL, 1857 NULL, 1858 NULL, 1859 NULL, 1860 /* 94*/ NULL, 1861 NULL, 1862 NULL, 1863 NULL, 1864 NULL, 1865 /* 99*/ NULL, 1866 NULL, 1867 NULL, 1868 MatConjugate_MPISBAIJ, 1869 NULL, 1870 /*104*/ NULL, 1871 MatRealPart_MPISBAIJ, 1872 MatImaginaryPart_MPISBAIJ, 1873 MatGetRowUpperTriangular_MPISBAIJ, 1874 MatRestoreRowUpperTriangular_MPISBAIJ, 1875 /*109*/ NULL, 1876 NULL, 1877 NULL, 1878 NULL, 1879 MatMissingDiagonal_MPISBAIJ, 1880 /*114*/ NULL, 1881 NULL, 1882 NULL, 1883 NULL, 1884 NULL, 1885 /*119*/ NULL, 1886 NULL, 1887 NULL, 1888 NULL, 1889 NULL, 1890 /*124*/ NULL, 1891 NULL, 1892 NULL, 1893 NULL, 1894 NULL, 1895 /*129*/ NULL, 1896 NULL, 1897 NULL, 1898 NULL, 1899 NULL, 1900 /*134*/ NULL, 1901 NULL, 1902 NULL, 1903 NULL, 1904 NULL, 1905 /*139*/ MatSetBlockSizes_Default, 1906 NULL, 1907 NULL, 1908 NULL, 1909 NULL, 1910 /*144*/ MatCreateMPIMatConcatenateSeqMat_MPISBAIJ, 1911 NULL, 1912 NULL, 1913 NULL, 1914 NULL, 1915 NULL, 1916 /*150*/ NULL, 1917 NULL}; 1918 1919 PetscErrorCode MatMPISBAIJSetPreallocation_MPISBAIJ(Mat B, PetscInt bs, PetscInt d_nz, const PetscInt *d_nnz, PetscInt o_nz, const PetscInt *o_nnz) 1920 { 1921 Mat_MPISBAIJ *b = (Mat_MPISBAIJ *)B->data; 1922 PetscInt i, mbs, Mbs; 1923 PetscMPIInt size; 1924 1925 PetscFunctionBegin; 1926 if (B->hash_active) { 1927 B->ops[0] = b->cops; 1928 B->hash_active = PETSC_FALSE; 1929 } 1930 if (!B->preallocated) PetscCall(MatStashCreate_Private(PetscObjectComm((PetscObject)B), bs, &B->bstash)); 1931 PetscCall(MatSetBlockSize(B, PetscAbs(bs))); 1932 PetscCall(PetscLayoutSetUp(B->rmap)); 1933 PetscCall(PetscLayoutSetUp(B->cmap)); 1934 PetscCall(PetscLayoutGetBlockSize(B->rmap, &bs)); 1935 PetscCheck(B->rmap->N <= B->cmap->N, PetscObjectComm((PetscObject)B), PETSC_ERR_SUP, "MPISBAIJ matrix cannot have more rows %" PetscInt_FMT " than columns %" PetscInt_FMT, B->rmap->N, B->cmap->N); 1936 PetscCheck(B->rmap->n <= B->cmap->n, PETSC_COMM_SELF, PETSC_ERR_SUP, "MPISBAIJ matrix cannot have more local rows %" PetscInt_FMT " than columns %" PetscInt_FMT, B->rmap->n, B->cmap->n); 1937 1938 mbs = B->rmap->n / bs; 1939 Mbs = B->rmap->N / bs; 1940 PetscCheck(mbs * bs == B->rmap->n, PETSC_COMM_SELF, PETSC_ERR_ARG_SIZ, "No of local rows %" PetscInt_FMT " must be divisible by blocksize %" PetscInt_FMT, B->rmap->N, bs); 1941 1942 B->rmap->bs = bs; 1943 b->bs2 = bs * bs; 1944 b->mbs = mbs; 1945 b->Mbs = Mbs; 1946 b->nbs = B->cmap->n / bs; 1947 b->Nbs = B->cmap->N / bs; 1948 1949 for (i = 0; i <= b->size; i++) b->rangebs[i] = B->rmap->range[i] / bs; 1950 b->rstartbs = B->rmap->rstart / bs; 1951 b->rendbs = B->rmap->rend / bs; 1952 1953 b->cstartbs = B->cmap->rstart / bs; 1954 b->cendbs = B->cmap->rend / bs; 1955 1956 #if defined(PETSC_USE_CTABLE) 1957 PetscCall(PetscHMapIDestroy(&b->colmap)); 1958 #else 1959 PetscCall(PetscFree(b->colmap)); 1960 #endif 1961 PetscCall(PetscFree(b->garray)); 1962 PetscCall(VecDestroy(&b->lvec)); 1963 PetscCall(VecScatterDestroy(&b->Mvctx)); 1964 PetscCall(VecDestroy(&b->slvec0)); 1965 PetscCall(VecDestroy(&b->slvec0b)); 1966 PetscCall(VecDestroy(&b->slvec1)); 1967 PetscCall(VecDestroy(&b->slvec1a)); 1968 PetscCall(VecDestroy(&b->slvec1b)); 1969 PetscCall(VecScatterDestroy(&b->sMvctx)); 1970 1971 PetscCallMPI(MPI_Comm_size(PetscObjectComm((PetscObject)B), &size)); 1972 PetscCall(MatDestroy(&b->B)); 1973 PetscCall(MatCreate(PETSC_COMM_SELF, &b->B)); 1974 PetscCall(MatSetSizes(b->B, B->rmap->n, size > 1 ? B->cmap->N : 0, B->rmap->n, size > 1 ? B->cmap->N : 0)); 1975 PetscCall(MatSetType(b->B, MATSEQBAIJ)); 1976 1977 PetscCall(MatDestroy(&b->A)); 1978 PetscCall(MatCreate(PETSC_COMM_SELF, &b->A)); 1979 PetscCall(MatSetSizes(b->A, B->rmap->n, B->cmap->n, B->rmap->n, B->cmap->n)); 1980 PetscCall(MatSetType(b->A, MATSEQSBAIJ)); 1981 1982 PetscCall(MatSeqSBAIJSetPreallocation(b->A, bs, d_nz, d_nnz)); 1983 PetscCall(MatSeqBAIJSetPreallocation(b->B, bs, o_nz, o_nnz)); 1984 1985 B->preallocated = PETSC_TRUE; 1986 B->was_assembled = PETSC_FALSE; 1987 B->assembled = PETSC_FALSE; 1988 PetscFunctionReturn(PETSC_SUCCESS); 1989 } 1990 1991 PetscErrorCode MatMPISBAIJSetPreallocationCSR_MPISBAIJ(Mat B, PetscInt bs, const PetscInt ii[], const PetscInt jj[], const PetscScalar V[]) 1992 { 1993 PetscInt m, rstart, cend; 1994 PetscInt i, j, d, nz, bd, nz_max = 0, *d_nnz = NULL, *o_nnz = NULL; 1995 const PetscInt *JJ = NULL; 1996 PetscScalar *values = NULL; 1997 PetscBool roworiented = ((Mat_MPISBAIJ *)B->data)->roworiented; 1998 PetscBool nooffprocentries; 1999 2000 PetscFunctionBegin; 2001 PetscCheck(bs >= 1, PetscObjectComm((PetscObject)B), PETSC_ERR_ARG_OUTOFRANGE, "Invalid block size specified, must be positive but it is %" PetscInt_FMT, bs); 2002 PetscCall(PetscLayoutSetBlockSize(B->rmap, bs)); 2003 PetscCall(PetscLayoutSetBlockSize(B->cmap, bs)); 2004 PetscCall(PetscLayoutSetUp(B->rmap)); 2005 PetscCall(PetscLayoutSetUp(B->cmap)); 2006 PetscCall(PetscLayoutGetBlockSize(B->rmap, &bs)); 2007 m = B->rmap->n / bs; 2008 rstart = B->rmap->rstart / bs; 2009 cend = B->cmap->rend / bs; 2010 2011 PetscCheck(!ii[0], PETSC_COMM_SELF, PETSC_ERR_ARG_OUTOFRANGE, "ii[0] must be 0 but it is %" PetscInt_FMT, ii[0]); 2012 PetscCall(PetscMalloc2(m, &d_nnz, m, &o_nnz)); 2013 for (i = 0; i < m; i++) { 2014 nz = ii[i + 1] - ii[i]; 2015 PetscCheck(nz >= 0, PETSC_COMM_SELF, PETSC_ERR_ARG_OUTOFRANGE, "Local row %" PetscInt_FMT " has a negative number of columns %" PetscInt_FMT, i, nz); 2016 /* count the ones on the diagonal and above, split into diagonal and off diagonal portions. */ 2017 JJ = jj + ii[i]; 2018 bd = 0; 2019 for (j = 0; j < nz; j++) { 2020 if (*JJ >= i + rstart) break; 2021 JJ++; 2022 bd++; 2023 } 2024 d = 0; 2025 for (; j < nz; j++) { 2026 if (*JJ++ >= cend) break; 2027 d++; 2028 } 2029 d_nnz[i] = d; 2030 o_nnz[i] = nz - d - bd; 2031 nz = nz - bd; 2032 nz_max = PetscMax(nz_max, nz); 2033 } 2034 PetscCall(MatMPISBAIJSetPreallocation(B, bs, 0, d_nnz, 0, o_nnz)); 2035 PetscCall(MatSetOption(B, MAT_IGNORE_LOWER_TRIANGULAR, PETSC_TRUE)); 2036 PetscCall(PetscFree2(d_nnz, o_nnz)); 2037 2038 values = (PetscScalar *)V; 2039 if (!values) PetscCall(PetscCalloc1(bs * bs * nz_max, &values)); 2040 for (i = 0; i < m; i++) { 2041 PetscInt row = i + rstart; 2042 PetscInt ncols = ii[i + 1] - ii[i]; 2043 const PetscInt *icols = jj + ii[i]; 2044 if (bs == 1 || !roworiented) { /* block ordering matches the non-nested layout of MatSetValues so we can insert entire rows */ 2045 const PetscScalar *svals = values + (V ? (bs * bs * ii[i]) : 0); 2046 PetscCall(MatSetValuesBlocked_MPISBAIJ(B, 1, &row, ncols, icols, svals, INSERT_VALUES)); 2047 } else { /* block ordering does not match so we can only insert one block at a time. */ 2048 PetscInt j; 2049 for (j = 0; j < ncols; j++) { 2050 const PetscScalar *svals = values + (V ? (bs * bs * (ii[i] + j)) : 0); 2051 PetscCall(MatSetValuesBlocked_MPISBAIJ(B, 1, &row, 1, &icols[j], svals, INSERT_VALUES)); 2052 } 2053 } 2054 } 2055 2056 if (!V) PetscCall(PetscFree(values)); 2057 nooffprocentries = B->nooffprocentries; 2058 B->nooffprocentries = PETSC_TRUE; 2059 PetscCall(MatAssemblyBegin(B, MAT_FINAL_ASSEMBLY)); 2060 PetscCall(MatAssemblyEnd(B, MAT_FINAL_ASSEMBLY)); 2061 B->nooffprocentries = nooffprocentries; 2062 2063 PetscCall(MatSetOption(B, MAT_NEW_NONZERO_LOCATION_ERR, PETSC_TRUE)); 2064 PetscFunctionReturn(PETSC_SUCCESS); 2065 } 2066 2067 /*MC 2068 MATMPISBAIJ - MATMPISBAIJ = "mpisbaij" - A matrix type to be used for distributed symmetric sparse block matrices, 2069 based on block compressed sparse row format. Only the upper triangular portion of the "diagonal" portion of 2070 the matrix is stored. 2071 2072 For complex numbers by default this matrix is symmetric, NOT Hermitian symmetric. To make it Hermitian symmetric you 2073 can call `MatSetOption`(`Mat`, `MAT_HERMITIAN`); 2074 2075 Options Database Key: 2076 . -mat_type mpisbaij - sets the matrix type to "mpisbaij" during a call to `MatSetFromOptions()` 2077 2078 Level: beginner 2079 2080 Note: 2081 The number of rows in the matrix must be less than or equal to the number of columns. Similarly the number of rows in the 2082 diagonal portion of the matrix of each process has to less than or equal the number of columns. 2083 2084 .seealso: [](ch_matrices), `Mat`, `MATSBAIJ`, `MATBAIJ`, `MatCreateBAIJ()`, `MATSEQSBAIJ`, `MatType` 2085 M*/ 2086 2087 PETSC_EXTERN PetscErrorCode MatCreate_MPISBAIJ(Mat B) 2088 { 2089 Mat_MPISBAIJ *b; 2090 PetscBool flg = PETSC_FALSE; 2091 2092 PetscFunctionBegin; 2093 PetscCall(PetscNew(&b)); 2094 B->data = (void *)b; 2095 B->ops[0] = MatOps_Values; 2096 2097 B->ops->destroy = MatDestroy_MPISBAIJ; 2098 B->ops->view = MatView_MPISBAIJ; 2099 B->assembled = PETSC_FALSE; 2100 B->insertmode = NOT_SET_VALUES; 2101 2102 PetscCallMPI(MPI_Comm_rank(PetscObjectComm((PetscObject)B), &b->rank)); 2103 PetscCallMPI(MPI_Comm_size(PetscObjectComm((PetscObject)B), &b->size)); 2104 2105 /* build local table of row and column ownerships */ 2106 PetscCall(PetscMalloc1(b->size + 2, &b->rangebs)); 2107 2108 /* build cache for off array entries formed */ 2109 PetscCall(MatStashCreate_Private(PetscObjectComm((PetscObject)B), 1, &B->stash)); 2110 2111 b->donotstash = PETSC_FALSE; 2112 b->colmap = NULL; 2113 b->garray = NULL; 2114 b->roworiented = PETSC_TRUE; 2115 2116 /* stuff used in block assembly */ 2117 b->barray = NULL; 2118 2119 /* stuff used for matrix vector multiply */ 2120 b->lvec = NULL; 2121 b->Mvctx = NULL; 2122 b->slvec0 = NULL; 2123 b->slvec0b = NULL; 2124 b->slvec1 = NULL; 2125 b->slvec1a = NULL; 2126 b->slvec1b = NULL; 2127 b->sMvctx = NULL; 2128 2129 /* stuff for MatGetRow() */ 2130 b->rowindices = NULL; 2131 b->rowvalues = NULL; 2132 b->getrowactive = PETSC_FALSE; 2133 2134 /* hash table stuff */ 2135 b->ht = NULL; 2136 b->hd = NULL; 2137 b->ht_size = 0; 2138 b->ht_flag = PETSC_FALSE; 2139 b->ht_fact = 0; 2140 b->ht_total_ct = 0; 2141 b->ht_insert_ct = 0; 2142 2143 /* stuff for MatCreateSubMatrices_MPIBAIJ_local() */ 2144 b->ijonly = PETSC_FALSE; 2145 2146 b->in_loc = NULL; 2147 b->v_loc = NULL; 2148 b->n_loc = 0; 2149 2150 PetscCall(PetscObjectComposeFunction((PetscObject)B, "MatStoreValues_C", MatStoreValues_MPISBAIJ)); 2151 PetscCall(PetscObjectComposeFunction((PetscObject)B, "MatRetrieveValues_C", MatRetrieveValues_MPISBAIJ)); 2152 PetscCall(PetscObjectComposeFunction((PetscObject)B, "MatMPISBAIJSetPreallocation_C", MatMPISBAIJSetPreallocation_MPISBAIJ)); 2153 PetscCall(PetscObjectComposeFunction((PetscObject)B, "MatMPISBAIJSetPreallocationCSR_C", MatMPISBAIJSetPreallocationCSR_MPISBAIJ)); 2154 #if defined(PETSC_HAVE_ELEMENTAL) 2155 PetscCall(PetscObjectComposeFunction((PetscObject)B, "MatConvert_mpisbaij_elemental_C", MatConvert_MPISBAIJ_Elemental)); 2156 #endif 2157 #if defined(PETSC_HAVE_SCALAPACK) 2158 PetscCall(PetscObjectComposeFunction((PetscObject)B, "MatConvert_mpisbaij_scalapack_C", MatConvert_SBAIJ_ScaLAPACK)); 2159 #endif 2160 PetscCall(PetscObjectComposeFunction((PetscObject)B, "MatConvert_mpisbaij_mpiaij_C", MatConvert_MPISBAIJ_Basic)); 2161 PetscCall(PetscObjectComposeFunction((PetscObject)B, "MatConvert_mpisbaij_mpibaij_C", MatConvert_MPISBAIJ_Basic)); 2162 2163 B->symmetric = PETSC_BOOL3_TRUE; 2164 B->structurally_symmetric = PETSC_BOOL3_TRUE; 2165 B->symmetry_eternal = PETSC_TRUE; 2166 B->structural_symmetry_eternal = PETSC_TRUE; 2167 #if defined(PETSC_USE_COMPLEX) 2168 B->hermitian = PETSC_BOOL3_FALSE; 2169 #else 2170 B->hermitian = PETSC_BOOL3_TRUE; 2171 #endif 2172 2173 PetscCall(PetscObjectChangeTypeName((PetscObject)B, MATMPISBAIJ)); 2174 PetscOptionsBegin(PetscObjectComm((PetscObject)B), NULL, "Options for loading MPISBAIJ matrix 1", "Mat"); 2175 PetscCall(PetscOptionsBool("-mat_use_hash_table", "Use hash table to save memory in constructing matrix", "MatSetOption", flg, &flg, NULL)); 2176 if (flg) { 2177 PetscReal fact = 1.39; 2178 PetscCall(MatSetOption(B, MAT_USE_HASH_TABLE, PETSC_TRUE)); 2179 PetscCall(PetscOptionsReal("-mat_use_hash_table", "Use hash table factor", "MatMPIBAIJSetHashTableFactor", fact, &fact, NULL)); 2180 if (fact <= 1.0) fact = 1.39; 2181 PetscCall(MatMPIBAIJSetHashTableFactor(B, fact)); 2182 PetscCall(PetscInfo(B, "Hash table Factor used %5.2g\n", (double)fact)); 2183 } 2184 PetscOptionsEnd(); 2185 PetscFunctionReturn(PETSC_SUCCESS); 2186 } 2187 2188 // PetscClangLinter pragma disable: -fdoc-section-header-unknown 2189 /*MC 2190 MATSBAIJ - MATSBAIJ = "sbaij" - A matrix type to be used for symmetric block sparse matrices. 2191 2192 This matrix type is identical to `MATSEQSBAIJ` when constructed with a single process communicator, 2193 and `MATMPISBAIJ` otherwise. 2194 2195 Options Database Key: 2196 . -mat_type sbaij - sets the matrix type to `MATSBAIJ` during a call to `MatSetFromOptions()` 2197 2198 Level: beginner 2199 2200 .seealso: [](ch_matrices), `Mat`, `MATSEQSBAIJ`, `MATMPISBAIJ`, `MatCreateSBAIJ()`, `MATSEQSBAIJ`, `MATMPISBAIJ` 2201 M*/ 2202 2203 /*@C 2204 MatMPISBAIJSetPreallocation - For good matrix assembly performance 2205 the user should preallocate the matrix storage by setting the parameters 2206 d_nz (or d_nnz) and o_nz (or o_nnz). By setting these parameters accurately, 2207 performance can be increased by more than a factor of 50. 2208 2209 Collective 2210 2211 Input Parameters: 2212 + B - the matrix 2213 . bs - size of block, the blocks are ALWAYS square. One can use MatSetBlockSizes() to set a different row and column blocksize but the row 2214 blocksize always defines the size of the blocks. The column blocksize sets the blocksize of the vectors obtained with MatCreateVecs() 2215 . d_nz - number of block nonzeros per block row in diagonal portion of local 2216 submatrix (same for all local rows) 2217 . d_nnz - array containing the number of block nonzeros in the various block rows 2218 in the upper triangular and diagonal part of the in diagonal portion of the local 2219 (possibly different for each block row) or `NULL`. If you plan to factor the matrix you must leave room 2220 for the diagonal entry and set a value even if it is zero. 2221 . o_nz - number of block nonzeros per block row in the off-diagonal portion of local 2222 submatrix (same for all local rows). 2223 - o_nnz - array containing the number of nonzeros in the various block rows of the 2224 off-diagonal portion of the local submatrix that is right of the diagonal 2225 (possibly different for each block row) or `NULL`. 2226 2227 Options Database Keys: 2228 + -mat_no_unroll - uses code that does not unroll the loops in the 2229 block calculations (much slower) 2230 - -mat_block_size - size of the blocks to use 2231 2232 Level: intermediate 2233 2234 Notes: 2235 2236 If `PETSC_DECIDE` or `PETSC_DETERMINE` is used for a particular argument on one processor 2237 than it must be used on all processors that share the object for that argument. 2238 2239 If the *_nnz parameter is given then the *_nz parameter is ignored 2240 2241 Storage Information: 2242 For a square global matrix we define each processor's diagonal portion 2243 to be its local rows and the corresponding columns (a square submatrix); 2244 each processor's off-diagonal portion encompasses the remainder of the 2245 local matrix (a rectangular submatrix). 2246 2247 The user can specify preallocated storage for the diagonal part of 2248 the local submatrix with either `d_nz` or `d_nnz` (not both). Set 2249 `d_nz` = `PETSC_DEFAULT` and `d_nnz` = `NULL` for PETSc to control dynamic 2250 memory allocation. Likewise, specify preallocated storage for the 2251 off-diagonal part of the local submatrix with `o_nz` or `o_nnz` (not both). 2252 2253 You can call `MatGetInfo()` to get information on how effective the preallocation was; 2254 for example the fields mallocs,nz_allocated,nz_used,nz_unneeded; 2255 You can also run with the option `-info` and look for messages with the string 2256 malloc in them to see if additional memory allocation was needed. 2257 2258 Consider a processor that owns rows 3, 4 and 5 of a parallel matrix. In 2259 the figure below we depict these three local rows and all columns (0-11). 2260 2261 .vb 2262 0 1 2 3 4 5 6 7 8 9 10 11 2263 -------------------------- 2264 row 3 |. . . d d d o o o o o o 2265 row 4 |. . . d d d o o o o o o 2266 row 5 |. . . d d d o o o o o o 2267 -------------------------- 2268 .ve 2269 2270 Thus, any entries in the d locations are stored in the d (diagonal) 2271 submatrix, and any entries in the o locations are stored in the 2272 o (off-diagonal) submatrix. Note that the d matrix is stored in 2273 `MATSEQSBAIJ` format and the o submatrix in `MATSEQBAIJ` format. 2274 2275 Now `d_nz` should indicate the number of block nonzeros per row in the upper triangular 2276 plus the diagonal part of the d matrix, 2277 and `o_nz` should indicate the number of block nonzeros per row in the o matrix 2278 2279 In general, for PDE problems in which most nonzeros are near the diagonal, 2280 one expects `d_nz` >> `o_nz`. 2281 2282 .seealso: [](ch_matrices), `Mat`, `MATMPISBAIJ`, `MATSBAIJ`, `MatCreate()`, `MatCreateSeqSBAIJ()`, `MatSetValues()`, `MatCreateBAIJ()`, `PetscSplitOwnership()` 2283 @*/ 2284 PetscErrorCode MatMPISBAIJSetPreallocation(Mat B, PetscInt bs, PetscInt d_nz, const PetscInt d_nnz[], PetscInt o_nz, const PetscInt o_nnz[]) 2285 { 2286 PetscFunctionBegin; 2287 PetscValidHeaderSpecific(B, MAT_CLASSID, 1); 2288 PetscValidType(B, 1); 2289 PetscValidLogicalCollectiveInt(B, bs, 2); 2290 PetscTryMethod(B, "MatMPISBAIJSetPreallocation_C", (Mat, PetscInt, PetscInt, const PetscInt[], PetscInt, const PetscInt[]), (B, bs, d_nz, d_nnz, o_nz, o_nnz)); 2291 PetscFunctionReturn(PETSC_SUCCESS); 2292 } 2293 2294 // PetscClangLinter pragma disable: -fdoc-section-header-unknown 2295 /*@C 2296 MatCreateSBAIJ - Creates a sparse parallel matrix in symmetric block AIJ format, `MATSBAIJ`, 2297 (block compressed row). For good matrix assembly performance 2298 the user should preallocate the matrix storage by setting the parameters 2299 `d_nz` (or `d_nnz`) and `o_nz` (or `o_nnz`). 2300 2301 Collective 2302 2303 Input Parameters: 2304 + comm - MPI communicator 2305 . bs - size of block, the blocks are ALWAYS square. One can use `MatSetBlockSizes()` to set a different row and column blocksize but the row 2306 blocksize always defines the size of the blocks. The column blocksize sets the blocksize of the vectors obtained with `MatCreateVecs()` 2307 . m - number of local rows (or `PETSC_DECIDE` to have calculated if `M` is given) 2308 This value should be the same as the local size used in creating the 2309 y vector for the matrix-vector product y = Ax. 2310 . n - number of local columns (or `PETSC_DECIDE` to have calculated if `N` is given) 2311 This value should be the same as the local size used in creating the 2312 x vector for the matrix-vector product y = Ax. 2313 . M - number of global rows (or `PETSC_DETERMINE` to have calculated if `m` is given) 2314 . N - number of global columns (or `PETSC_DETERMINE` to have calculated if `n` is given) 2315 . d_nz - number of block nonzeros per block row in diagonal portion of local 2316 submatrix (same for all local rows) 2317 . d_nnz - array containing the number of block nonzeros in the various block rows 2318 in the upper triangular portion of the in diagonal portion of the local 2319 (possibly different for each block block row) or `NULL`. 2320 If you plan to factor the matrix you must leave room for the diagonal entry and 2321 set its value even if it is zero. 2322 . o_nz - number of block nonzeros per block row in the off-diagonal portion of local 2323 submatrix (same for all local rows). 2324 - o_nnz - array containing the number of nonzeros in the various block rows of the 2325 off-diagonal portion of the local submatrix (possibly different for 2326 each block row) or `NULL`. 2327 2328 Output Parameter: 2329 . A - the matrix 2330 2331 Options Database Keys: 2332 + -mat_no_unroll - uses code that does not unroll the loops in the 2333 block calculations (much slower) 2334 . -mat_block_size - size of the blocks to use 2335 - -mat_mpi - use the parallel matrix data structures even on one processor 2336 (defaults to using SeqBAIJ format on one processor) 2337 2338 Level: intermediate 2339 2340 Notes: 2341 It is recommended that one use the `MatCreate()`, `MatSetType()` and/or `MatSetFromOptions()`, 2342 MatXXXXSetPreallocation() paradigm instead of this routine directly. 2343 [MatXXXXSetPreallocation() is, for example, `MatSeqAIJSetPreallocation()`] 2344 2345 The number of rows and columns must be divisible by blocksize. 2346 This matrix type does not support complex Hermitian operation. 2347 2348 The user MUST specify either the local or global matrix dimensions 2349 (possibly both). 2350 2351 If `PETSC_DECIDE` or `PETSC_DETERMINE` is used for a particular argument on one processor 2352 than it must be used on all processors that share the object for that argument. 2353 2354 If the *_nnz parameter is given then the *_nz parameter is ignored 2355 2356 Storage Information: 2357 For a square global matrix we define each processor's diagonal portion 2358 to be its local rows and the corresponding columns (a square submatrix); 2359 each processor's off-diagonal portion encompasses the remainder of the 2360 local matrix (a rectangular submatrix). 2361 2362 The user can specify preallocated storage for the diagonal part of 2363 the local submatrix with either `d_nz` or `d_nnz` (not both). Set 2364 `d_nz` = `PETSC_DEFAULT` and `d_nnz` = `NULL` for PETSc to control dynamic 2365 memory allocation. Likewise, specify preallocated storage for the 2366 off-diagonal part of the local submatrix with `o_nz` or `o_nnz` (not both). 2367 2368 Consider a processor that owns rows 3, 4 and 5 of a parallel matrix. In 2369 the figure below we depict these three local rows and all columns (0-11). 2370 2371 .vb 2372 0 1 2 3 4 5 6 7 8 9 10 11 2373 -------------------------- 2374 row 3 |. . . d d d o o o o o o 2375 row 4 |. . . d d d o o o o o o 2376 row 5 |. . . d d d o o o o o o 2377 -------------------------- 2378 .ve 2379 2380 Thus, any entries in the d locations are stored in the d (diagonal) 2381 submatrix, and any entries in the o locations are stored in the 2382 o (off-diagonal) submatrix. Note that the d matrix is stored in 2383 `MATSEQSBAIJ` format and the o submatrix in `MATSEQBAIJ` format. 2384 2385 Now `d_nz` should indicate the number of block nonzeros per row in the upper triangular 2386 plus the diagonal part of the d matrix, 2387 and `o_nz` should indicate the number of block nonzeros per row in the o matrix. 2388 In general, for PDE problems in which most nonzeros are near the diagonal, 2389 one expects `d_nz` >> `o_nz`. 2390 2391 .seealso: [](ch_matrices), `Mat`, `MATSBAIJ`, `MatCreate()`, `MatCreateSeqSBAIJ()`, `MatSetValues()`, `MatCreateBAIJ()` 2392 @*/ 2393 PetscErrorCode MatCreateSBAIJ(MPI_Comm comm, PetscInt bs, PetscInt m, PetscInt n, PetscInt M, PetscInt N, PetscInt d_nz, const PetscInt d_nnz[], PetscInt o_nz, const PetscInt o_nnz[], Mat *A) 2394 { 2395 PetscMPIInt size; 2396 2397 PetscFunctionBegin; 2398 PetscCall(MatCreate(comm, A)); 2399 PetscCall(MatSetSizes(*A, m, n, M, N)); 2400 PetscCallMPI(MPI_Comm_size(comm, &size)); 2401 if (size > 1) { 2402 PetscCall(MatSetType(*A, MATMPISBAIJ)); 2403 PetscCall(MatMPISBAIJSetPreallocation(*A, bs, d_nz, d_nnz, o_nz, o_nnz)); 2404 } else { 2405 PetscCall(MatSetType(*A, MATSEQSBAIJ)); 2406 PetscCall(MatSeqSBAIJSetPreallocation(*A, bs, d_nz, d_nnz)); 2407 } 2408 PetscFunctionReturn(PETSC_SUCCESS); 2409 } 2410 2411 static PetscErrorCode MatDuplicate_MPISBAIJ(Mat matin, MatDuplicateOption cpvalues, Mat *newmat) 2412 { 2413 Mat mat; 2414 Mat_MPISBAIJ *a, *oldmat = (Mat_MPISBAIJ *)matin->data; 2415 PetscInt len = 0, nt, bs = matin->rmap->bs, mbs = oldmat->mbs; 2416 PetscScalar *array; 2417 2418 PetscFunctionBegin; 2419 *newmat = NULL; 2420 2421 PetscCall(MatCreate(PetscObjectComm((PetscObject)matin), &mat)); 2422 PetscCall(MatSetSizes(mat, matin->rmap->n, matin->cmap->n, matin->rmap->N, matin->cmap->N)); 2423 PetscCall(MatSetType(mat, ((PetscObject)matin)->type_name)); 2424 PetscCall(PetscLayoutReference(matin->rmap, &mat->rmap)); 2425 PetscCall(PetscLayoutReference(matin->cmap, &mat->cmap)); 2426 2427 mat->factortype = matin->factortype; 2428 mat->preallocated = PETSC_TRUE; 2429 mat->assembled = PETSC_TRUE; 2430 mat->insertmode = NOT_SET_VALUES; 2431 2432 a = (Mat_MPISBAIJ *)mat->data; 2433 a->bs2 = oldmat->bs2; 2434 a->mbs = oldmat->mbs; 2435 a->nbs = oldmat->nbs; 2436 a->Mbs = oldmat->Mbs; 2437 a->Nbs = oldmat->Nbs; 2438 2439 a->size = oldmat->size; 2440 a->rank = oldmat->rank; 2441 a->donotstash = oldmat->donotstash; 2442 a->roworiented = oldmat->roworiented; 2443 a->rowindices = NULL; 2444 a->rowvalues = NULL; 2445 a->getrowactive = PETSC_FALSE; 2446 a->barray = NULL; 2447 a->rstartbs = oldmat->rstartbs; 2448 a->rendbs = oldmat->rendbs; 2449 a->cstartbs = oldmat->cstartbs; 2450 a->cendbs = oldmat->cendbs; 2451 2452 /* hash table stuff */ 2453 a->ht = NULL; 2454 a->hd = NULL; 2455 a->ht_size = 0; 2456 a->ht_flag = oldmat->ht_flag; 2457 a->ht_fact = oldmat->ht_fact; 2458 a->ht_total_ct = 0; 2459 a->ht_insert_ct = 0; 2460 2461 PetscCall(PetscArraycpy(a->rangebs, oldmat->rangebs, a->size + 2)); 2462 if (oldmat->colmap) { 2463 #if defined(PETSC_USE_CTABLE) 2464 PetscCall(PetscHMapIDuplicate(oldmat->colmap, &a->colmap)); 2465 #else 2466 PetscCall(PetscMalloc1(a->Nbs, &a->colmap)); 2467 PetscCall(PetscArraycpy(a->colmap, oldmat->colmap, a->Nbs)); 2468 #endif 2469 } else a->colmap = NULL; 2470 2471 if (oldmat->garray && (len = ((Mat_SeqBAIJ *)(oldmat->B->data))->nbs)) { 2472 PetscCall(PetscMalloc1(len, &a->garray)); 2473 PetscCall(PetscArraycpy(a->garray, oldmat->garray, len)); 2474 } else a->garray = NULL; 2475 2476 PetscCall(MatStashCreate_Private(PetscObjectComm((PetscObject)matin), matin->rmap->bs, &mat->bstash)); 2477 PetscCall(VecDuplicate(oldmat->lvec, &a->lvec)); 2478 PetscCall(VecScatterCopy(oldmat->Mvctx, &a->Mvctx)); 2479 2480 PetscCall(VecDuplicate(oldmat->slvec0, &a->slvec0)); 2481 PetscCall(VecDuplicate(oldmat->slvec1, &a->slvec1)); 2482 2483 PetscCall(VecGetLocalSize(a->slvec1, &nt)); 2484 PetscCall(VecGetArray(a->slvec1, &array)); 2485 PetscCall(VecCreateSeqWithArray(PETSC_COMM_SELF, 1, bs * mbs, array, &a->slvec1a)); 2486 PetscCall(VecCreateSeqWithArray(PETSC_COMM_SELF, 1, nt - bs * mbs, array + bs * mbs, &a->slvec1b)); 2487 PetscCall(VecRestoreArray(a->slvec1, &array)); 2488 PetscCall(VecGetArray(a->slvec0, &array)); 2489 PetscCall(VecCreateSeqWithArray(PETSC_COMM_SELF, 1, nt - bs * mbs, array + bs * mbs, &a->slvec0b)); 2490 PetscCall(VecRestoreArray(a->slvec0, &array)); 2491 2492 /* ierr = VecScatterCopy(oldmat->sMvctx,&a->sMvctx); - not written yet, replaced by the lazy trick: */ 2493 PetscCall(PetscObjectReference((PetscObject)oldmat->sMvctx)); 2494 a->sMvctx = oldmat->sMvctx; 2495 2496 PetscCall(MatDuplicate(oldmat->A, cpvalues, &a->A)); 2497 PetscCall(MatDuplicate(oldmat->B, cpvalues, &a->B)); 2498 PetscCall(PetscFunctionListDuplicate(((PetscObject)matin)->qlist, &((PetscObject)mat)->qlist)); 2499 *newmat = mat; 2500 PetscFunctionReturn(PETSC_SUCCESS); 2501 } 2502 2503 /* Used for both MPIBAIJ and MPISBAIJ matrices */ 2504 #define MatLoad_MPISBAIJ_Binary MatLoad_MPIBAIJ_Binary 2505 2506 PetscErrorCode MatLoad_MPISBAIJ(Mat mat, PetscViewer viewer) 2507 { 2508 PetscBool isbinary; 2509 2510 PetscFunctionBegin; 2511 PetscCall(PetscObjectTypeCompare((PetscObject)viewer, PETSCVIEWERBINARY, &isbinary)); 2512 PetscCheck(isbinary, PetscObjectComm((PetscObject)viewer), PETSC_ERR_SUP, "Viewer type %s not yet supported for reading %s matrices", ((PetscObject)viewer)->type_name, ((PetscObject)mat)->type_name); 2513 PetscCall(MatLoad_MPISBAIJ_Binary(mat, viewer)); 2514 PetscFunctionReturn(PETSC_SUCCESS); 2515 } 2516 2517 PetscErrorCode MatGetRowMaxAbs_MPISBAIJ(Mat A, Vec v, PetscInt idx[]) 2518 { 2519 Mat_MPISBAIJ *a = (Mat_MPISBAIJ *)A->data; 2520 Mat_SeqBAIJ *b = (Mat_SeqBAIJ *)(a->B)->data; 2521 PetscReal atmp; 2522 PetscReal *work, *svalues, *rvalues; 2523 PetscInt i, bs, mbs, *bi, *bj, brow, j, ncols, krow, kcol, col, row, Mbs, bcol; 2524 PetscMPIInt rank, size; 2525 PetscInt *rowners_bs, dest, count, source; 2526 PetscScalar *va; 2527 MatScalar *ba; 2528 MPI_Status stat; 2529 2530 PetscFunctionBegin; 2531 PetscCheck(!idx, PETSC_COMM_SELF, PETSC_ERR_SUP, "Send email to petsc-maint@mcs.anl.gov"); 2532 PetscCall(MatGetRowMaxAbs(a->A, v, NULL)); 2533 PetscCall(VecGetArray(v, &va)); 2534 2535 PetscCallMPI(MPI_Comm_size(PetscObjectComm((PetscObject)A), &size)); 2536 PetscCallMPI(MPI_Comm_rank(PetscObjectComm((PetscObject)A), &rank)); 2537 2538 bs = A->rmap->bs; 2539 mbs = a->mbs; 2540 Mbs = a->Mbs; 2541 ba = b->a; 2542 bi = b->i; 2543 bj = b->j; 2544 2545 /* find ownerships */ 2546 rowners_bs = A->rmap->range; 2547 2548 /* each proc creates an array to be distributed */ 2549 PetscCall(PetscCalloc1(bs * Mbs, &work)); 2550 2551 /* row_max for B */ 2552 if (rank != size - 1) { 2553 for (i = 0; i < mbs; i++) { 2554 ncols = bi[1] - bi[0]; 2555 bi++; 2556 brow = bs * i; 2557 for (j = 0; j < ncols; j++) { 2558 bcol = bs * (*bj); 2559 for (kcol = 0; kcol < bs; kcol++) { 2560 col = bcol + kcol; /* local col index */ 2561 col += rowners_bs[rank + 1]; /* global col index */ 2562 for (krow = 0; krow < bs; krow++) { 2563 atmp = PetscAbsScalar(*ba); 2564 ba++; 2565 row = brow + krow; /* local row index */ 2566 if (PetscRealPart(va[row]) < atmp) va[row] = atmp; 2567 if (work[col] < atmp) work[col] = atmp; 2568 } 2569 } 2570 bj++; 2571 } 2572 } 2573 2574 /* send values to its owners */ 2575 for (dest = rank + 1; dest < size; dest++) { 2576 svalues = work + rowners_bs[dest]; 2577 count = rowners_bs[dest + 1] - rowners_bs[dest]; 2578 PetscCallMPI(MPI_Send(svalues, count, MPIU_REAL, dest, rank, PetscObjectComm((PetscObject)A))); 2579 } 2580 } 2581 2582 /* receive values */ 2583 if (rank) { 2584 rvalues = work; 2585 count = rowners_bs[rank + 1] - rowners_bs[rank]; 2586 for (source = 0; source < rank; source++) { 2587 PetscCallMPI(MPI_Recv(rvalues, count, MPIU_REAL, MPI_ANY_SOURCE, MPI_ANY_TAG, PetscObjectComm((PetscObject)A), &stat)); 2588 /* process values */ 2589 for (i = 0; i < count; i++) { 2590 if (PetscRealPart(va[i]) < rvalues[i]) va[i] = rvalues[i]; 2591 } 2592 } 2593 } 2594 2595 PetscCall(VecRestoreArray(v, &va)); 2596 PetscCall(PetscFree(work)); 2597 PetscFunctionReturn(PETSC_SUCCESS); 2598 } 2599 2600 PetscErrorCode MatSOR_MPISBAIJ(Mat matin, Vec bb, PetscReal omega, MatSORType flag, PetscReal fshift, PetscInt its, PetscInt lits, Vec xx) 2601 { 2602 Mat_MPISBAIJ *mat = (Mat_MPISBAIJ *)matin->data; 2603 PetscInt mbs = mat->mbs, bs = matin->rmap->bs; 2604 PetscScalar *x, *ptr, *from; 2605 Vec bb1; 2606 const PetscScalar *b; 2607 2608 PetscFunctionBegin; 2609 PetscCheck(its > 0 && lits > 0, PETSC_COMM_SELF, PETSC_ERR_ARG_WRONG, "Relaxation requires global its %" PetscInt_FMT " and local its %" PetscInt_FMT " both positive", its, lits); 2610 PetscCheck(bs <= 1, PETSC_COMM_SELF, PETSC_ERR_SUP, "SSOR for block size > 1 is not yet implemented"); 2611 2612 if (flag == SOR_APPLY_UPPER) { 2613 PetscCall((*mat->A->ops->sor)(mat->A, bb, omega, flag, fshift, lits, 1, xx)); 2614 PetscFunctionReturn(PETSC_SUCCESS); 2615 } 2616 2617 if ((flag & SOR_LOCAL_SYMMETRIC_SWEEP) == SOR_LOCAL_SYMMETRIC_SWEEP) { 2618 if (flag & SOR_ZERO_INITIAL_GUESS) { 2619 PetscCall((*mat->A->ops->sor)(mat->A, bb, omega, flag, fshift, lits, lits, xx)); 2620 its--; 2621 } 2622 2623 PetscCall(VecDuplicate(bb, &bb1)); 2624 while (its--) { 2625 /* lower triangular part: slvec0b = - B^T*xx */ 2626 PetscCall((*mat->B->ops->multtranspose)(mat->B, xx, mat->slvec0b)); 2627 2628 /* copy xx into slvec0a */ 2629 PetscCall(VecGetArray(mat->slvec0, &ptr)); 2630 PetscCall(VecGetArray(xx, &x)); 2631 PetscCall(PetscArraycpy(ptr, x, bs * mbs)); 2632 PetscCall(VecRestoreArray(mat->slvec0, &ptr)); 2633 2634 PetscCall(VecScale(mat->slvec0, -1.0)); 2635 2636 /* copy bb into slvec1a */ 2637 PetscCall(VecGetArray(mat->slvec1, &ptr)); 2638 PetscCall(VecGetArrayRead(bb, &b)); 2639 PetscCall(PetscArraycpy(ptr, b, bs * mbs)); 2640 PetscCall(VecRestoreArray(mat->slvec1, &ptr)); 2641 2642 /* set slvec1b = 0 */ 2643 PetscCall(PetscObjectStateIncrease((PetscObject)mat->slvec1b)); 2644 PetscCall(VecZeroEntries(mat->slvec1b)); 2645 2646 PetscCall(VecScatterBegin(mat->sMvctx, mat->slvec0, mat->slvec1, ADD_VALUES, SCATTER_FORWARD)); 2647 PetscCall(VecRestoreArray(xx, &x)); 2648 PetscCall(VecRestoreArrayRead(bb, &b)); 2649 PetscCall(VecScatterEnd(mat->sMvctx, mat->slvec0, mat->slvec1, ADD_VALUES, SCATTER_FORWARD)); 2650 2651 /* upper triangular part: bb1 = bb1 - B*x */ 2652 PetscCall((*mat->B->ops->multadd)(mat->B, mat->slvec1b, mat->slvec1a, bb1)); 2653 2654 /* local diagonal sweep */ 2655 PetscCall((*mat->A->ops->sor)(mat->A, bb1, omega, SOR_SYMMETRIC_SWEEP, fshift, lits, lits, xx)); 2656 } 2657 PetscCall(VecDestroy(&bb1)); 2658 } else if ((flag & SOR_LOCAL_FORWARD_SWEEP) && (its == 1) && (flag & SOR_ZERO_INITIAL_GUESS)) { 2659 PetscCall((*mat->A->ops->sor)(mat->A, bb, omega, flag, fshift, lits, 1, xx)); 2660 } else if ((flag & SOR_LOCAL_BACKWARD_SWEEP) && (its == 1) && (flag & SOR_ZERO_INITIAL_GUESS)) { 2661 PetscCall((*mat->A->ops->sor)(mat->A, bb, omega, flag, fshift, lits, 1, xx)); 2662 } else if (flag & SOR_EISENSTAT) { 2663 Vec xx1; 2664 PetscBool hasop; 2665 const PetscScalar *diag; 2666 PetscScalar *sl, scale = (omega - 2.0) / omega; 2667 PetscInt i, n; 2668 2669 if (!mat->xx1) { 2670 PetscCall(VecDuplicate(bb, &mat->xx1)); 2671 PetscCall(VecDuplicate(bb, &mat->bb1)); 2672 } 2673 xx1 = mat->xx1; 2674 bb1 = mat->bb1; 2675 2676 PetscCall((*mat->A->ops->sor)(mat->A, bb, omega, (MatSORType)(SOR_ZERO_INITIAL_GUESS | SOR_LOCAL_BACKWARD_SWEEP), fshift, lits, 1, xx)); 2677 2678 if (!mat->diag) { 2679 /* this is wrong for same matrix with new nonzero values */ 2680 PetscCall(MatCreateVecs(matin, &mat->diag, NULL)); 2681 PetscCall(MatGetDiagonal(matin, mat->diag)); 2682 } 2683 PetscCall(MatHasOperation(matin, MATOP_MULT_DIAGONAL_BLOCK, &hasop)); 2684 2685 if (hasop) { 2686 PetscCall(MatMultDiagonalBlock(matin, xx, bb1)); 2687 PetscCall(VecAYPX(mat->slvec1a, scale, bb)); 2688 } else { 2689 /* 2690 These two lines are replaced by code that may be a bit faster for a good compiler 2691 PetscCall(VecPointwiseMult(mat->slvec1a,mat->diag,xx)); 2692 PetscCall(VecAYPX(mat->slvec1a,scale,bb)); 2693 */ 2694 PetscCall(VecGetArray(mat->slvec1a, &sl)); 2695 PetscCall(VecGetArrayRead(mat->diag, &diag)); 2696 PetscCall(VecGetArrayRead(bb, &b)); 2697 PetscCall(VecGetArray(xx, &x)); 2698 PetscCall(VecGetLocalSize(xx, &n)); 2699 if (omega == 1.0) { 2700 for (i = 0; i < n; i++) sl[i] = b[i] - diag[i] * x[i]; 2701 PetscCall(PetscLogFlops(2.0 * n)); 2702 } else { 2703 for (i = 0; i < n; i++) sl[i] = b[i] + scale * diag[i] * x[i]; 2704 PetscCall(PetscLogFlops(3.0 * n)); 2705 } 2706 PetscCall(VecRestoreArray(mat->slvec1a, &sl)); 2707 PetscCall(VecRestoreArrayRead(mat->diag, &diag)); 2708 PetscCall(VecRestoreArrayRead(bb, &b)); 2709 PetscCall(VecRestoreArray(xx, &x)); 2710 } 2711 2712 /* multiply off-diagonal portion of matrix */ 2713 PetscCall(PetscObjectStateIncrease((PetscObject)mat->slvec1b)); 2714 PetscCall(VecZeroEntries(mat->slvec1b)); 2715 PetscCall((*mat->B->ops->multtranspose)(mat->B, xx, mat->slvec0b)); 2716 PetscCall(VecGetArray(mat->slvec0, &from)); 2717 PetscCall(VecGetArray(xx, &x)); 2718 PetscCall(PetscArraycpy(from, x, bs * mbs)); 2719 PetscCall(VecRestoreArray(mat->slvec0, &from)); 2720 PetscCall(VecRestoreArray(xx, &x)); 2721 PetscCall(VecScatterBegin(mat->sMvctx, mat->slvec0, mat->slvec1, ADD_VALUES, SCATTER_FORWARD)); 2722 PetscCall(VecScatterEnd(mat->sMvctx, mat->slvec0, mat->slvec1, ADD_VALUES, SCATTER_FORWARD)); 2723 PetscCall((*mat->B->ops->multadd)(mat->B, mat->slvec1b, mat->slvec1a, mat->slvec1a)); 2724 2725 /* local sweep */ 2726 PetscCall((*mat->A->ops->sor)(mat->A, mat->slvec1a, omega, (MatSORType)(SOR_ZERO_INITIAL_GUESS | SOR_LOCAL_FORWARD_SWEEP), fshift, lits, 1, xx1)); 2727 PetscCall(VecAXPY(xx, 1.0, xx1)); 2728 } else SETERRQ(PETSC_COMM_SELF, PETSC_ERR_SUP, "MatSORType is not supported for SBAIJ matrix format"); 2729 PetscFunctionReturn(PETSC_SUCCESS); 2730 } 2731 2732 /*@ 2733 MatCreateMPISBAIJWithArrays - creates a `MATMPISBAIJ` matrix using arrays that contain in standard 2734 CSR format the local rows. 2735 2736 Collective 2737 2738 Input Parameters: 2739 + comm - MPI communicator 2740 . bs - the block size, only a block size of 1 is supported 2741 . m - number of local rows (Cannot be `PETSC_DECIDE`) 2742 . n - This value should be the same as the local size used in creating the 2743 x vector for the matrix-vector product y = Ax. (or `PETSC_DECIDE` to have 2744 calculated if `N` is given) For square matrices `n` is almost always `m`. 2745 . M - number of global rows (or `PETSC_DETERMINE` to have calculated if `m` is given) 2746 . N - number of global columns (or `PETSC_DETERMINE` to have calculated if `n` is given) 2747 . i - row indices; that is i[0] = 0, i[row] = i[row-1] + number of block elements in that row block row of the matrix 2748 . j - column indices 2749 - a - matrix values 2750 2751 Output Parameter: 2752 . mat - the matrix 2753 2754 Level: intermediate 2755 2756 Notes: 2757 The `i`, `j`, and `a` arrays ARE copied by this routine into the internal format used by PETSc; 2758 thus you CANNOT change the matrix entries by changing the values of `a` after you have 2759 called this routine. Use `MatCreateMPIAIJWithSplitArrays()` to avoid needing to copy the arrays. 2760 2761 The `i` and `j` indices are 0 based, and `i` indices are indices corresponding to the local `j` array. 2762 2763 .seealso: [](ch_matrices), `Mat`, `MATMPISBAIJ`, `MatCreate()`, `MatCreateSeqAIJ()`, `MatSetValues()`, `MatMPIAIJSetPreallocation()`, `MatMPIAIJSetPreallocationCSR()`, 2764 `MPIAIJ`, `MatCreateAIJ()`, `MatCreateMPIAIJWithSplitArrays()` 2765 @*/ 2766 PetscErrorCode MatCreateMPISBAIJWithArrays(MPI_Comm comm, PetscInt bs, PetscInt m, PetscInt n, PetscInt M, PetscInt N, const PetscInt i[], const PetscInt j[], const PetscScalar a[], Mat *mat) 2767 { 2768 PetscFunctionBegin; 2769 PetscCheck(!i[0], PETSC_COMM_SELF, PETSC_ERR_ARG_OUTOFRANGE, "i (row indices) must start with 0"); 2770 PetscCheck(m >= 0, PETSC_COMM_SELF, PETSC_ERR_ARG_OUTOFRANGE, "local number of rows (m) cannot be PETSC_DECIDE, or negative"); 2771 PetscCall(MatCreate(comm, mat)); 2772 PetscCall(MatSetSizes(*mat, m, n, M, N)); 2773 PetscCall(MatSetType(*mat, MATMPISBAIJ)); 2774 PetscCall(MatMPISBAIJSetPreallocationCSR(*mat, bs, i, j, a)); 2775 PetscFunctionReturn(PETSC_SUCCESS); 2776 } 2777 2778 /*@C 2779 MatMPISBAIJSetPreallocationCSR - Creates a sparse parallel matrix in `MATMPISBAIJ` format using the given nonzero structure and (optional) numerical values 2780 2781 Collective 2782 2783 Input Parameters: 2784 + B - the matrix 2785 . bs - the block size 2786 . i - the indices into `j` for the start of each local row (starts with zero) 2787 . j - the column indices for each local row (starts with zero) these must be sorted for each row 2788 - v - optional values in the matrix 2789 2790 Level: advanced 2791 2792 Notes: 2793 Though this routine has Preallocation() in the name it also sets the exact nonzero locations of the matrix entries 2794 and usually the numerical values as well 2795 2796 Any entries below the diagonal are ignored 2797 2798 .seealso: [](ch_matrices), `Mat`, `MATMPISBAIJ`, `MatCreate()`, `MatCreateSeqAIJ()`, `MatSetValues()`, `MatMPIBAIJSetPreallocation()`, `MatCreateAIJ()`, `MPIAIJ` 2799 @*/ 2800 PetscErrorCode MatMPISBAIJSetPreallocationCSR(Mat B, PetscInt bs, const PetscInt i[], const PetscInt j[], const PetscScalar v[]) 2801 { 2802 PetscFunctionBegin; 2803 PetscTryMethod(B, "MatMPISBAIJSetPreallocationCSR_C", (Mat, PetscInt, const PetscInt[], const PetscInt[], const PetscScalar[]), (B, bs, i, j, v)); 2804 PetscFunctionReturn(PETSC_SUCCESS); 2805 } 2806 2807 PetscErrorCode MatCreateMPIMatConcatenateSeqMat_MPISBAIJ(MPI_Comm comm, Mat inmat, PetscInt n, MatReuse scall, Mat *outmat) 2808 { 2809 PetscInt m, N, i, rstart, nnz, Ii, bs, cbs; 2810 PetscInt *indx; 2811 PetscScalar *values; 2812 2813 PetscFunctionBegin; 2814 PetscCall(MatGetSize(inmat, &m, &N)); 2815 if (scall == MAT_INITIAL_MATRIX) { /* symbolic phase */ 2816 Mat_SeqSBAIJ *a = (Mat_SeqSBAIJ *)inmat->data; 2817 PetscInt *dnz, *onz, mbs, Nbs, nbs; 2818 PetscInt *bindx, rmax = a->rmax, j; 2819 PetscMPIInt rank, size; 2820 2821 PetscCall(MatGetBlockSizes(inmat, &bs, &cbs)); 2822 mbs = m / bs; 2823 Nbs = N / cbs; 2824 if (n == PETSC_DECIDE) PetscCall(PetscSplitOwnershipBlock(comm, cbs, &n, &N)); 2825 nbs = n / cbs; 2826 2827 PetscCall(PetscMalloc1(rmax, &bindx)); 2828 MatPreallocateBegin(comm, mbs, nbs, dnz, onz); /* inline function, output __end and __rstart are used below */ 2829 2830 PetscCallMPI(MPI_Comm_rank(comm, &rank)); 2831 PetscCallMPI(MPI_Comm_rank(comm, &size)); 2832 if (rank == size - 1) { 2833 /* Check sum(nbs) = Nbs */ 2834 PetscCheck(__end == Nbs, PETSC_COMM_SELF, PETSC_ERR_ARG_INCOMP, "Sum of local block columns %" PetscInt_FMT " != global block columns %" PetscInt_FMT, __end, Nbs); 2835 } 2836 2837 rstart = __rstart; /* block rstart of *outmat; see inline function MatPreallocateBegin */ 2838 PetscCall(MatSetOption(inmat, MAT_GETROW_UPPERTRIANGULAR, PETSC_TRUE)); 2839 for (i = 0; i < mbs; i++) { 2840 PetscCall(MatGetRow_SeqSBAIJ(inmat, i * bs, &nnz, &indx, NULL)); /* non-blocked nnz and indx */ 2841 nnz = nnz / bs; 2842 for (j = 0; j < nnz; j++) bindx[j] = indx[j * bs] / bs; 2843 PetscCall(MatPreallocateSet(i + rstart, nnz, bindx, dnz, onz)); 2844 PetscCall(MatRestoreRow_SeqSBAIJ(inmat, i * bs, &nnz, &indx, NULL)); 2845 } 2846 PetscCall(MatSetOption(inmat, MAT_GETROW_UPPERTRIANGULAR, PETSC_FALSE)); 2847 PetscCall(PetscFree(bindx)); 2848 2849 PetscCall(MatCreate(comm, outmat)); 2850 PetscCall(MatSetSizes(*outmat, m, n, PETSC_DETERMINE, PETSC_DETERMINE)); 2851 PetscCall(MatSetBlockSizes(*outmat, bs, cbs)); 2852 PetscCall(MatSetType(*outmat, MATSBAIJ)); 2853 PetscCall(MatSeqSBAIJSetPreallocation(*outmat, bs, 0, dnz)); 2854 PetscCall(MatMPISBAIJSetPreallocation(*outmat, bs, 0, dnz, 0, onz)); 2855 MatPreallocateEnd(dnz, onz); 2856 } 2857 2858 /* numeric phase */ 2859 PetscCall(MatGetBlockSizes(inmat, &bs, &cbs)); 2860 PetscCall(MatGetOwnershipRange(*outmat, &rstart, NULL)); 2861 2862 PetscCall(MatSetOption(inmat, MAT_GETROW_UPPERTRIANGULAR, PETSC_TRUE)); 2863 for (i = 0; i < m; i++) { 2864 PetscCall(MatGetRow_SeqSBAIJ(inmat, i, &nnz, &indx, &values)); 2865 Ii = i + rstart; 2866 PetscCall(MatSetValues(*outmat, 1, &Ii, nnz, indx, values, INSERT_VALUES)); 2867 PetscCall(MatRestoreRow_SeqSBAIJ(inmat, i, &nnz, &indx, &values)); 2868 } 2869 PetscCall(MatSetOption(inmat, MAT_GETROW_UPPERTRIANGULAR, PETSC_FALSE)); 2870 PetscCall(MatAssemblyBegin(*outmat, MAT_FINAL_ASSEMBLY)); 2871 PetscCall(MatAssemblyEnd(*outmat, MAT_FINAL_ASSEMBLY)); 2872 PetscFunctionReturn(PETSC_SUCCESS); 2873 } 2874