1 #define PETSCMAT_DLL 2 3 #include "../src/mat/impls/baij/mpi/mpibaij.h" /*I "petscmat.h" I*/ 4 #include "mpisbaij.h" 5 #include "../src/mat/impls/sbaij/seq/sbaij.h" 6 #include "petscblaslapack.h" 7 8 EXTERN PetscErrorCode MatSetUpMultiply_MPISBAIJ(Mat); 9 EXTERN PetscErrorCode MatSetUpMultiply_MPISBAIJ_2comm(Mat); 10 EXTERN PetscErrorCode DisAssemble_MPISBAIJ(Mat); 11 EXTERN PetscErrorCode MatIncreaseOverlap_MPISBAIJ(Mat,PetscInt,IS[],PetscInt); 12 EXTERN PetscErrorCode MatGetValues_SeqSBAIJ(Mat,PetscInt,const PetscInt[],PetscInt,const PetscInt[],PetscScalar []); 13 EXTERN PetscErrorCode MatGetValues_SeqBAIJ(Mat,PetscInt,const PetscInt[],PetscInt,const PetscInt[],PetscScalar []); 14 EXTERN PetscErrorCode MatSetValues_SeqSBAIJ(Mat,PetscInt,const PetscInt [],PetscInt,const PetscInt [],const PetscScalar [],InsertMode); 15 EXTERN PetscErrorCode MatSetValuesBlocked_SeqSBAIJ(Mat,PetscInt,const PetscInt[],PetscInt,const PetscInt[],const PetscScalar[],InsertMode); 16 EXTERN PetscErrorCode MatSetValuesBlocked_SeqBAIJ(Mat,PetscInt,const PetscInt[],PetscInt,const PetscInt[],const PetscScalar[],InsertMode); 17 EXTERN PetscErrorCode MatGetRow_SeqSBAIJ(Mat,PetscInt,PetscInt*,PetscInt**,PetscScalar**); 18 EXTERN PetscErrorCode MatRestoreRow_SeqSBAIJ(Mat,PetscInt,PetscInt*,PetscInt**,PetscScalar**); 19 EXTERN PetscErrorCode MatZeroRows_SeqSBAIJ(Mat,IS,PetscScalar*); 20 EXTERN PetscErrorCode MatZeroRows_SeqBAIJ(Mat,IS,PetscScalar *); 21 EXTERN PetscErrorCode MatGetRowMaxAbs_MPISBAIJ(Mat,Vec,PetscInt[]); 22 EXTERN PetscErrorCode MatSOR_MPISBAIJ(Mat,Vec,PetscReal,MatSORType,PetscReal,PetscInt,PetscInt,Vec); 23 24 EXTERN_C_BEGIN 25 #undef __FUNCT__ 26 #define __FUNCT__ "MatStoreValues_MPISBAIJ" 27 PetscErrorCode PETSCMAT_DLLEXPORT MatStoreValues_MPISBAIJ(Mat mat) 28 { 29 Mat_MPISBAIJ *aij = (Mat_MPISBAIJ *)mat->data; 30 PetscErrorCode ierr; 31 32 PetscFunctionBegin; 33 ierr = MatStoreValues(aij->A);CHKERRQ(ierr); 34 ierr = MatStoreValues(aij->B);CHKERRQ(ierr); 35 PetscFunctionReturn(0); 36 } 37 EXTERN_C_END 38 39 EXTERN_C_BEGIN 40 #undef __FUNCT__ 41 #define __FUNCT__ "MatRetrieveValues_MPISBAIJ" 42 PetscErrorCode PETSCMAT_DLLEXPORT MatRetrieveValues_MPISBAIJ(Mat mat) 43 { 44 Mat_MPISBAIJ *aij = (Mat_MPISBAIJ *)mat->data; 45 PetscErrorCode ierr; 46 47 PetscFunctionBegin; 48 ierr = MatRetrieveValues(aij->A);CHKERRQ(ierr); 49 ierr = MatRetrieveValues(aij->B);CHKERRQ(ierr); 50 PetscFunctionReturn(0); 51 } 52 EXTERN_C_END 53 54 55 #define CHUNKSIZE 10 56 57 #define MatSetValues_SeqSBAIJ_A_Private(row,col,value,addv) \ 58 { \ 59 \ 60 brow = row/bs; \ 61 rp = aj + ai[brow]; ap = aa + bs2*ai[brow]; \ 62 rmax = aimax[brow]; nrow = ailen[brow]; \ 63 bcol = col/bs; \ 64 ridx = row % bs; cidx = col % bs; \ 65 low = 0; high = nrow; \ 66 while (high-low > 3) { \ 67 t = (low+high)/2; \ 68 if (rp[t] > bcol) high = t; \ 69 else low = t; \ 70 } \ 71 for (_i=low; _i<high; _i++) { \ 72 if (rp[_i] > bcol) break; \ 73 if (rp[_i] == bcol) { \ 74 bap = ap + bs2*_i + bs*cidx + ridx; \ 75 if (addv == ADD_VALUES) *bap += value; \ 76 else *bap = value; \ 77 goto a_noinsert; \ 78 } \ 79 } \ 80 if (a->nonew == 1) goto a_noinsert; \ 81 if (a->nonew == -1) SETERRQ2(PETSC_ERR_ARG_OUTOFRANGE,"Inserting a new nonzero (%D, %D) into matrix", row, col); \ 82 MatSeqXAIJReallocateAIJ(A,a->mbs,bs2,nrow,brow,bcol,rmax,aa,ai,aj,rp,ap,aimax,a->nonew,MatScalar); \ 83 N = nrow++ - 1; \ 84 /* shift up all the later entries in this row */ \ 85 for (ii=N; ii>=_i; ii--) { \ 86 rp[ii+1] = rp[ii]; \ 87 ierr = PetscMemcpy(ap+bs2*(ii+1),ap+bs2*(ii),bs2*sizeof(MatScalar));CHKERRQ(ierr); \ 88 } \ 89 if (N>=_i) { ierr = PetscMemzero(ap+bs2*_i,bs2*sizeof(MatScalar));CHKERRQ(ierr); } \ 90 rp[_i] = bcol; \ 91 ap[bs2*_i + bs*cidx + ridx] = value; \ 92 a_noinsert:; \ 93 ailen[brow] = nrow; \ 94 } 95 96 #define MatSetValues_SeqSBAIJ_B_Private(row,col,value,addv) \ 97 { \ 98 brow = row/bs; \ 99 rp = bj + bi[brow]; ap = ba + bs2*bi[brow]; \ 100 rmax = bimax[brow]; nrow = bilen[brow]; \ 101 bcol = col/bs; \ 102 ridx = row % bs; cidx = col % bs; \ 103 low = 0; high = nrow; \ 104 while (high-low > 3) { \ 105 t = (low+high)/2; \ 106 if (rp[t] > bcol) high = t; \ 107 else low = t; \ 108 } \ 109 for (_i=low; _i<high; _i++) { \ 110 if (rp[_i] > bcol) break; \ 111 if (rp[_i] == bcol) { \ 112 bap = ap + bs2*_i + bs*cidx + ridx; \ 113 if (addv == ADD_VALUES) *bap += value; \ 114 else *bap = value; \ 115 goto b_noinsert; \ 116 } \ 117 } \ 118 if (b->nonew == 1) goto b_noinsert; \ 119 if (b->nonew == -1) SETERRQ2(PETSC_ERR_ARG_OUTOFRANGE,"Inserting a new nonzero (%D, %D) into matrix", row, col); \ 120 MatSeqXAIJReallocateAIJ(B,b->mbs,bs2,nrow,brow,bcol,rmax,ba,bi,bj,rp,ap,bimax,b->nonew,MatScalar); \ 121 N = nrow++ - 1; \ 122 /* shift up all the later entries in this row */ \ 123 for (ii=N; ii>=_i; ii--) { \ 124 rp[ii+1] = rp[ii]; \ 125 ierr = PetscMemcpy(ap+bs2*(ii+1),ap+bs2*(ii),bs2*sizeof(MatScalar));CHKERRQ(ierr); \ 126 } \ 127 if (N>=_i) { ierr = PetscMemzero(ap+bs2*_i,bs2*sizeof(MatScalar));CHKERRQ(ierr);} \ 128 rp[_i] = bcol; \ 129 ap[bs2*_i + bs*cidx + ridx] = value; \ 130 b_noinsert:; \ 131 bilen[brow] = nrow; \ 132 } 133 134 /* Only add/insert a(i,j) with i<=j (blocks). 135 Any a(i,j) with i>j input by user is ingored. 136 */ 137 #undef __FUNCT__ 138 #define __FUNCT__ "MatSetValues_MPISBAIJ" 139 PetscErrorCode MatSetValues_MPISBAIJ(Mat mat,PetscInt m,const PetscInt im[],PetscInt n,const PetscInt in[],const PetscScalar v[],InsertMode addv) 140 { 141 Mat_MPISBAIJ *baij = (Mat_MPISBAIJ*)mat->data; 142 MatScalar value; 143 PetscTruth roworiented = baij->roworiented; 144 PetscErrorCode ierr; 145 PetscInt i,j,row,col; 146 PetscInt rstart_orig=mat->rmap->rstart; 147 PetscInt rend_orig=mat->rmap->rend,cstart_orig=mat->cmap->rstart; 148 PetscInt cend_orig=mat->cmap->rend,bs=mat->rmap->bs; 149 150 /* Some Variables required in the macro */ 151 Mat A = baij->A; 152 Mat_SeqSBAIJ *a = (Mat_SeqSBAIJ*)(A)->data; 153 PetscInt *aimax=a->imax,*ai=a->i,*ailen=a->ilen,*aj=a->j; 154 MatScalar *aa=a->a; 155 156 Mat B = baij->B; 157 Mat_SeqBAIJ *b = (Mat_SeqBAIJ*)(B)->data; 158 PetscInt *bimax=b->imax,*bi=b->i,*bilen=b->ilen,*bj=b->j; 159 MatScalar *ba=b->a; 160 161 PetscInt *rp,ii,nrow,_i,rmax,N,brow,bcol; 162 PetscInt low,high,t,ridx,cidx,bs2=a->bs2; 163 MatScalar *ap,*bap; 164 165 /* for stash */ 166 PetscInt n_loc, *in_loc = PETSC_NULL; 167 MatScalar *v_loc = PETSC_NULL; 168 169 PetscFunctionBegin; 170 if (v) PetscValidScalarPointer(v,6); 171 if (!baij->donotstash){ 172 if (n > baij->n_loc) { 173 ierr = PetscFree(baij->in_loc);CHKERRQ(ierr); 174 ierr = PetscFree(baij->v_loc);CHKERRQ(ierr); 175 ierr = PetscMalloc(n*sizeof(PetscInt),&baij->in_loc);CHKERRQ(ierr); 176 ierr = PetscMalloc(n*sizeof(MatScalar),&baij->v_loc);CHKERRQ(ierr); 177 baij->n_loc = n; 178 } 179 in_loc = baij->in_loc; 180 v_loc = baij->v_loc; 181 } 182 183 for (i=0; i<m; i++) { 184 if (im[i] < 0) continue; 185 #if defined(PETSC_USE_DEBUG) 186 if (im[i] >= mat->rmap->N) SETERRQ2(PETSC_ERR_ARG_OUTOFRANGE,"Row too large: row %D max %D",im[i],mat->rmap->N-1); 187 #endif 188 if (im[i] >= rstart_orig && im[i] < rend_orig) { /* this processor entry */ 189 row = im[i] - rstart_orig; /* local row index */ 190 for (j=0; j<n; j++) { 191 if (im[i]/bs > in[j]/bs){ 192 if (a->ignore_ltriangular){ 193 continue; /* ignore lower triangular blocks */ 194 } else { 195 SETERRQ(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)"); 196 } 197 } 198 if (in[j] >= cstart_orig && in[j] < cend_orig){ /* diag entry (A) */ 199 col = in[j] - cstart_orig; /* local col index */ 200 brow = row/bs; bcol = col/bs; 201 if (brow > bcol) continue; /* ignore lower triangular blocks of A */ 202 if (roworiented) value = v[i*n+j]; else value = v[i+j*m]; 203 MatSetValues_SeqSBAIJ_A_Private(row,col,value,addv); 204 /* ierr = MatSetValues_SeqBAIJ(baij->A,1,&row,1,&col,&value,addv);CHKERRQ(ierr); */ 205 } else if (in[j] < 0) continue; 206 #if defined(PETSC_USE_DEBUG) 207 else if (in[j] >= mat->cmap->N) {SETERRQ2(PETSC_ERR_ARG_OUTOFRANGE,"Column too large: col %D max %D",in[j],mat->cmap->N-1);} 208 #endif 209 else { /* off-diag entry (B) */ 210 if (mat->was_assembled) { 211 if (!baij->colmap) { 212 ierr = CreateColmap_MPIBAIJ_Private(mat);CHKERRQ(ierr); 213 } 214 #if defined (PETSC_USE_CTABLE) 215 ierr = PetscTableFind(baij->colmap,in[j]/bs + 1,&col);CHKERRQ(ierr); 216 col = col - 1; 217 #else 218 col = baij->colmap[in[j]/bs] - 1; 219 #endif 220 if (col < 0 && !((Mat_SeqSBAIJ*)(baij->A->data))->nonew) { 221 ierr = DisAssemble_MPISBAIJ(mat);CHKERRQ(ierr); 222 col = in[j]; 223 /* Reinitialize the variables required by MatSetValues_SeqBAIJ_B_Private() */ 224 B = baij->B; 225 b = (Mat_SeqBAIJ*)(B)->data; 226 bimax=b->imax;bi=b->i;bilen=b->ilen;bj=b->j; 227 ba=b->a; 228 } else col += in[j]%bs; 229 } else col = in[j]; 230 if (roworiented) value = v[i*n+j]; else value = v[i+j*m]; 231 MatSetValues_SeqSBAIJ_B_Private(row,col,value,addv); 232 /* ierr = MatSetValues_SeqBAIJ(baij->B,1,&row,1,&col,&value,addv);CHKERRQ(ierr); */ 233 } 234 } 235 } else { /* off processor entry */ 236 if (!baij->donotstash) { 237 n_loc = 0; 238 for (j=0; j<n; j++){ 239 if (im[i]/bs > in[j]/bs) continue; /* ignore lower triangular blocks */ 240 in_loc[n_loc] = in[j]; 241 if (roworiented) { 242 v_loc[n_loc] = v[i*n+j]; 243 } else { 244 v_loc[n_loc] = v[j*m+i]; 245 } 246 n_loc++; 247 } 248 ierr = MatStashValuesRow_Private(&mat->stash,im[i],n_loc,in_loc,v_loc,PETSC_FALSE);CHKERRQ(ierr); 249 } 250 } 251 } 252 PetscFunctionReturn(0); 253 } 254 255 #undef __FUNCT__ 256 #define __FUNCT__ "MatSetValuesBlocked_MPISBAIJ" 257 PetscErrorCode MatSetValuesBlocked_MPISBAIJ(Mat mat,PetscInt m,const PetscInt im[],PetscInt n,const PetscInt in[],const MatScalar v[],InsertMode addv) 258 { 259 Mat_MPISBAIJ *baij = (Mat_MPISBAIJ*)mat->data; 260 const MatScalar *value; 261 MatScalar *barray=baij->barray; 262 PetscTruth roworiented = baij->roworiented,ignore_ltriangular = ((Mat_SeqSBAIJ*)baij->A->data)->ignore_ltriangular; 263 PetscErrorCode ierr; 264 PetscInt i,j,ii,jj,row,col,rstart=baij->rstartbs; 265 PetscInt rend=baij->rendbs,cstart=baij->rstartbs,stepval; 266 PetscInt cend=baij->rendbs,bs=mat->rmap->bs,bs2=baij->bs2; 267 268 PetscFunctionBegin; 269 if(!barray) { 270 ierr = PetscMalloc(bs2*sizeof(MatScalar),&barray);CHKERRQ(ierr); 271 baij->barray = barray; 272 } 273 274 if (roworiented) { 275 stepval = (n-1)*bs; 276 } else { 277 stepval = (m-1)*bs; 278 } 279 for (i=0; i<m; i++) { 280 if (im[i] < 0) continue; 281 #if defined(PETSC_USE_DEBUG) 282 if (im[i] >= baij->Mbs) SETERRQ2(PETSC_ERR_ARG_OUTOFRANGE,"Row too large, row %D max %D",im[i],baij->Mbs-1); 283 #endif 284 if (im[i] >= rstart && im[i] < rend) { 285 row = im[i] - rstart; 286 for (j=0; j<n; j++) { 287 if (im[i] > in[j]) { 288 if (ignore_ltriangular) continue; /* ignore lower triangular blocks */ 289 else SETERRQ(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)"); 290 } 291 /* If NumCol = 1 then a copy is not required */ 292 if ((roworiented) && (n == 1)) { 293 barray = (MatScalar*) v + i*bs2; 294 } else if((!roworiented) && (m == 1)) { 295 barray = (MatScalar*) v + j*bs2; 296 } else { /* Here a copy is required */ 297 if (roworiented) { 298 value = v + i*(stepval+bs)*bs + j*bs; 299 } else { 300 value = v + j*(stepval+bs)*bs + i*bs; 301 } 302 for (ii=0; ii<bs; ii++,value+=stepval) { 303 for (jj=0; jj<bs; jj++) { 304 *barray++ = *value++; 305 } 306 } 307 barray -=bs2; 308 } 309 310 if (in[j] >= cstart && in[j] < cend){ 311 col = in[j] - cstart; 312 ierr = MatSetValuesBlocked_SeqSBAIJ(baij->A,1,&row,1,&col,barray,addv);CHKERRQ(ierr); 313 } 314 else if (in[j] < 0) continue; 315 #if defined(PETSC_USE_DEBUG) 316 else if (in[j] >= baij->Nbs) {SETERRQ2(PETSC_ERR_ARG_OUTOFRANGE,"Column too large, col %D max %D",in[j],baij->Nbs-1);} 317 #endif 318 else { 319 if (mat->was_assembled) { 320 if (!baij->colmap) { 321 ierr = CreateColmap_MPIBAIJ_Private(mat);CHKERRQ(ierr); 322 } 323 324 #if defined(PETSC_USE_DEBUG) 325 #if defined (PETSC_USE_CTABLE) 326 { PetscInt data; 327 ierr = PetscTableFind(baij->colmap,in[j]+1,&data);CHKERRQ(ierr); 328 if ((data - 1) % bs) SETERRQ(PETSC_ERR_PLIB,"Incorrect colmap"); 329 } 330 #else 331 if ((baij->colmap[in[j]] - 1) % bs) SETERRQ(PETSC_ERR_PLIB,"Incorrect colmap"); 332 #endif 333 #endif 334 #if defined (PETSC_USE_CTABLE) 335 ierr = PetscTableFind(baij->colmap,in[j]+1,&col);CHKERRQ(ierr); 336 col = (col - 1)/bs; 337 #else 338 col = (baij->colmap[in[j]] - 1)/bs; 339 #endif 340 if (col < 0 && !((Mat_SeqBAIJ*)(baij->A->data))->nonew) { 341 ierr = DisAssemble_MPISBAIJ(mat);CHKERRQ(ierr); 342 col = in[j]; 343 } 344 } 345 else col = in[j]; 346 ierr = MatSetValuesBlocked_SeqBAIJ(baij->B,1,&row,1,&col,barray,addv);CHKERRQ(ierr); 347 } 348 } 349 } else { 350 if (!baij->donotstash) { 351 if (roworiented) { 352 ierr = MatStashValuesRowBlocked_Private(&mat->bstash,im[i],n,in,v,m,n,i);CHKERRQ(ierr); 353 } else { 354 ierr = MatStashValuesColBlocked_Private(&mat->bstash,im[i],n,in,v,m,n,i);CHKERRQ(ierr); 355 } 356 } 357 } 358 } 359 PetscFunctionReturn(0); 360 } 361 362 #undef __FUNCT__ 363 #define __FUNCT__ "MatGetValues_MPISBAIJ" 364 PetscErrorCode MatGetValues_MPISBAIJ(Mat mat,PetscInt m,const PetscInt idxm[],PetscInt n,const PetscInt idxn[],PetscScalar v[]) 365 { 366 Mat_MPISBAIJ *baij = (Mat_MPISBAIJ*)mat->data; 367 PetscErrorCode ierr; 368 PetscInt bs=mat->rmap->bs,i,j,bsrstart = mat->rmap->rstart,bsrend = mat->rmap->rend; 369 PetscInt bscstart = mat->cmap->rstart,bscend = mat->cmap->rend,row,col,data; 370 371 PetscFunctionBegin; 372 for (i=0; i<m; i++) { 373 if (idxm[i] < 0) continue; /* SETERRQ1(PETSC_ERR_ARG_OUTOFRANGE,"Negative row: %D",idxm[i]); */ 374 if (idxm[i] >= mat->rmap->N) SETERRQ2(PETSC_ERR_ARG_OUTOFRANGE,"Row too large: row %D max %D",idxm[i],mat->rmap->N-1); 375 if (idxm[i] >= bsrstart && idxm[i] < bsrend) { 376 row = idxm[i] - bsrstart; 377 for (j=0; j<n; j++) { 378 if (idxn[j] < 0) continue; /* SETERRQ1(PETSC_ERR_ARG_OUTOFRANGE,"Negative column %D",idxn[j]); */ 379 if (idxn[j] >= mat->cmap->N) SETERRQ2(PETSC_ERR_ARG_OUTOFRANGE,"Column too large: col %D max %D",idxn[j],mat->cmap->N-1); 380 if (idxn[j] >= bscstart && idxn[j] < bscend){ 381 col = idxn[j] - bscstart; 382 ierr = MatGetValues_SeqSBAIJ(baij->A,1,&row,1,&col,v+i*n+j);CHKERRQ(ierr); 383 } else { 384 if (!baij->colmap) { 385 ierr = CreateColmap_MPIBAIJ_Private(mat);CHKERRQ(ierr); 386 } 387 #if defined (PETSC_USE_CTABLE) 388 ierr = PetscTableFind(baij->colmap,idxn[j]/bs+1,&data);CHKERRQ(ierr); 389 data --; 390 #else 391 data = baij->colmap[idxn[j]/bs]-1; 392 #endif 393 if((data < 0) || (baij->garray[data/bs] != idxn[j]/bs)) *(v+i*n+j) = 0.0; 394 else { 395 col = data + idxn[j]%bs; 396 ierr = MatGetValues_SeqBAIJ(baij->B,1,&row,1,&col,v+i*n+j);CHKERRQ(ierr); 397 } 398 } 399 } 400 } else { 401 SETERRQ(PETSC_ERR_SUP,"Only local values currently supported"); 402 } 403 } 404 PetscFunctionReturn(0); 405 } 406 407 #undef __FUNCT__ 408 #define __FUNCT__ "MatNorm_MPISBAIJ" 409 PetscErrorCode MatNorm_MPISBAIJ(Mat mat,NormType type,PetscReal *norm) 410 { 411 Mat_MPISBAIJ *baij = (Mat_MPISBAIJ*)mat->data; 412 PetscErrorCode ierr; 413 PetscReal sum[2],*lnorm2; 414 415 PetscFunctionBegin; 416 if (baij->size == 1) { 417 ierr = MatNorm(baij->A,type,norm);CHKERRQ(ierr); 418 } else { 419 if (type == NORM_FROBENIUS) { 420 ierr = PetscMalloc(2*sizeof(PetscReal),&lnorm2);CHKERRQ(ierr); 421 ierr = MatNorm(baij->A,type,lnorm2);CHKERRQ(ierr); 422 *lnorm2 = (*lnorm2)*(*lnorm2); lnorm2++; /* squar power of norm(A) */ 423 ierr = MatNorm(baij->B,type,lnorm2);CHKERRQ(ierr); 424 *lnorm2 = (*lnorm2)*(*lnorm2); lnorm2--; /* squar power of norm(B) */ 425 ierr = MPI_Allreduce(lnorm2,&sum,2,MPIU_REAL,MPI_SUM,((PetscObject)mat)->comm);CHKERRQ(ierr); 426 *norm = sqrt(sum[0] + 2*sum[1]); 427 ierr = PetscFree(lnorm2);CHKERRQ(ierr); 428 } else if (type == NORM_INFINITY || type == NORM_1) { /* max row/column sum */ 429 Mat_SeqSBAIJ *amat=(Mat_SeqSBAIJ*)baij->A->data; 430 Mat_SeqBAIJ *bmat=(Mat_SeqBAIJ*)baij->B->data; 431 PetscReal *rsum,*rsum2,vabs; 432 PetscInt *jj,*garray=baij->garray,rstart=baij->rstartbs,nz; 433 PetscInt brow,bcol,col,bs=baij->A->rmap->bs,row,grow,gcol,mbs=amat->mbs; 434 MatScalar *v; 435 436 ierr = PetscMalloc2(mat->cmap->N,PetscReal,&rsum,mat->cmap->N,PetscReal,&rsum2);CHKERRQ(ierr); 437 ierr = PetscMemzero(rsum,mat->cmap->N*sizeof(PetscReal));CHKERRQ(ierr); 438 /* Amat */ 439 v = amat->a; jj = amat->j; 440 for (brow=0; brow<mbs; brow++) { 441 grow = bs*(rstart + brow); 442 nz = amat->i[brow+1] - amat->i[brow]; 443 for (bcol=0; bcol<nz; bcol++){ 444 gcol = bs*(rstart + *jj); jj++; 445 for (col=0; col<bs; col++){ 446 for (row=0; row<bs; row++){ 447 vabs = PetscAbsScalar(*v); v++; 448 rsum[gcol+col] += vabs; 449 /* non-diagonal block */ 450 if (bcol > 0 && vabs > 0.0) rsum[grow+row] += vabs; 451 } 452 } 453 } 454 } 455 /* Bmat */ 456 v = bmat->a; jj = bmat->j; 457 for (brow=0; brow<mbs; brow++) { 458 grow = bs*(rstart + brow); 459 nz = bmat->i[brow+1] - bmat->i[brow]; 460 for (bcol=0; bcol<nz; bcol++){ 461 gcol = bs*garray[*jj]; jj++; 462 for (col=0; col<bs; col++){ 463 for (row=0; row<bs; row++){ 464 vabs = PetscAbsScalar(*v); v++; 465 rsum[gcol+col] += vabs; 466 rsum[grow+row] += vabs; 467 } 468 } 469 } 470 } 471 ierr = MPI_Allreduce(rsum,rsum2,mat->cmap->N,MPIU_REAL,MPI_SUM,((PetscObject)mat)->comm);CHKERRQ(ierr); 472 *norm = 0.0; 473 for (col=0; col<mat->cmap->N; col++) { 474 if (rsum2[col] > *norm) *norm = rsum2[col]; 475 } 476 ierr = PetscFree2(rsum,rsum2);CHKERRQ(ierr); 477 } else { 478 SETERRQ(PETSC_ERR_SUP,"No support for this norm yet"); 479 } 480 } 481 PetscFunctionReturn(0); 482 } 483 484 #undef __FUNCT__ 485 #define __FUNCT__ "MatAssemblyBegin_MPISBAIJ" 486 PetscErrorCode MatAssemblyBegin_MPISBAIJ(Mat mat,MatAssemblyType mode) 487 { 488 Mat_MPISBAIJ *baij = (Mat_MPISBAIJ*)mat->data; 489 PetscErrorCode ierr; 490 PetscInt nstash,reallocs; 491 InsertMode addv; 492 493 PetscFunctionBegin; 494 if (baij->donotstash) { 495 PetscFunctionReturn(0); 496 } 497 498 /* make sure all processors are either in INSERTMODE or ADDMODE */ 499 ierr = MPI_Allreduce(&mat->insertmode,&addv,1,MPI_INT,MPI_BOR,((PetscObject)mat)->comm);CHKERRQ(ierr); 500 if (addv == (ADD_VALUES|INSERT_VALUES)) { 501 SETERRQ(PETSC_ERR_ARG_WRONGSTATE,"Some processors inserted others added"); 502 } 503 mat->insertmode = addv; /* in case this processor had no cache */ 504 505 ierr = MatStashScatterBegin_Private(mat,&mat->stash,mat->rmap->range);CHKERRQ(ierr); 506 ierr = MatStashScatterBegin_Private(mat,&mat->bstash,baij->rangebs);CHKERRQ(ierr); 507 ierr = MatStashGetInfo_Private(&mat->stash,&nstash,&reallocs);CHKERRQ(ierr); 508 ierr = PetscInfo2(mat,"Stash has %D entries,uses %D mallocs.\n",nstash,reallocs);CHKERRQ(ierr); 509 ierr = MatStashGetInfo_Private(&mat->stash,&nstash,&reallocs);CHKERRQ(ierr); 510 ierr = PetscInfo2(mat,"Block-Stash has %D entries, uses %D mallocs.\n",nstash,reallocs);CHKERRQ(ierr); 511 PetscFunctionReturn(0); 512 } 513 514 #undef __FUNCT__ 515 #define __FUNCT__ "MatAssemblyEnd_MPISBAIJ" 516 PetscErrorCode MatAssemblyEnd_MPISBAIJ(Mat mat,MatAssemblyType mode) 517 { 518 Mat_MPISBAIJ *baij=(Mat_MPISBAIJ*)mat->data; 519 Mat_SeqSBAIJ *a=(Mat_SeqSBAIJ*)baij->A->data; 520 PetscErrorCode ierr; 521 PetscInt i,j,rstart,ncols,flg,bs2=baij->bs2; 522 PetscInt *row,*col; 523 PetscTruth other_disassembled; 524 PetscMPIInt n; 525 PetscTruth r1,r2,r3; 526 MatScalar *val; 527 InsertMode addv = mat->insertmode; 528 529 /* do not use 'b=(Mat_SeqBAIJ*)baij->B->data' as B can be reset in disassembly */ 530 PetscFunctionBegin; 531 532 if (!baij->donotstash) { 533 while (1) { 534 ierr = MatStashScatterGetMesg_Private(&mat->stash,&n,&row,&col,&val,&flg);CHKERRQ(ierr); 535 if (!flg) break; 536 537 for (i=0; i<n;) { 538 /* Now identify the consecutive vals belonging to the same row */ 539 for (j=i,rstart=row[j]; j<n; j++) { if (row[j] != rstart) break; } 540 if (j < n) ncols = j-i; 541 else ncols = n-i; 542 /* Now assemble all these values with a single function call */ 543 ierr = MatSetValues_MPISBAIJ(mat,1,row+i,ncols,col+i,val+i,addv);CHKERRQ(ierr); 544 i = j; 545 } 546 } 547 ierr = MatStashScatterEnd_Private(&mat->stash);CHKERRQ(ierr); 548 /* Now process the block-stash. Since the values are stashed column-oriented, 549 set the roworiented flag to column oriented, and after MatSetValues() 550 restore the original flags */ 551 r1 = baij->roworiented; 552 r2 = a->roworiented; 553 r3 = ((Mat_SeqBAIJ*)baij->B->data)->roworiented; 554 baij->roworiented = PETSC_FALSE; 555 a->roworiented = PETSC_FALSE; 556 ((Mat_SeqBAIJ*)baij->B->data)->roworiented = PETSC_FALSE; /* b->roworinted */ 557 while (1) { 558 ierr = MatStashScatterGetMesg_Private(&mat->bstash,&n,&row,&col,&val,&flg);CHKERRQ(ierr); 559 if (!flg) break; 560 561 for (i=0; i<n;) { 562 /* Now identify the consecutive vals belonging to the same row */ 563 for (j=i,rstart=row[j]; j<n; j++) { if (row[j] != rstart) break; } 564 if (j < n) ncols = j-i; 565 else ncols = n-i; 566 ierr = MatSetValuesBlocked_MPISBAIJ(mat,1,row+i,ncols,col+i,val+i*bs2,addv);CHKERRQ(ierr); 567 i = j; 568 } 569 } 570 ierr = MatStashScatterEnd_Private(&mat->bstash);CHKERRQ(ierr); 571 baij->roworiented = r1; 572 a->roworiented = r2; 573 ((Mat_SeqBAIJ*)baij->B->data)->roworiented = r3; /* b->roworinted */ 574 } 575 576 ierr = MatAssemblyBegin(baij->A,mode);CHKERRQ(ierr); 577 ierr = MatAssemblyEnd(baij->A,mode);CHKERRQ(ierr); 578 579 /* determine if any processor has disassembled, if so we must 580 also disassemble ourselfs, in order that we may reassemble. */ 581 /* 582 if nonzero structure of submatrix B cannot change then we know that 583 no processor disassembled thus we can skip this stuff 584 */ 585 if (!((Mat_SeqBAIJ*)baij->B->data)->nonew) { 586 ierr = MPI_Allreduce(&mat->was_assembled,&other_disassembled,1,MPI_INT,MPI_PROD,((PetscObject)mat)->comm);CHKERRQ(ierr); 587 if (mat->was_assembled && !other_disassembled) { 588 ierr = DisAssemble_MPISBAIJ(mat);CHKERRQ(ierr); 589 } 590 } 591 592 if (!mat->was_assembled && mode == MAT_FINAL_ASSEMBLY) { 593 ierr = MatSetUpMultiply_MPISBAIJ(mat);CHKERRQ(ierr); /* setup Mvctx and sMvctx */ 594 } 595 ((Mat_SeqBAIJ*)baij->B->data)->compressedrow.use = PETSC_TRUE; /* b->compressedrow.use */ 596 ierr = MatAssemblyBegin(baij->B,mode);CHKERRQ(ierr); 597 ierr = MatAssemblyEnd(baij->B,mode);CHKERRQ(ierr); 598 599 ierr = PetscFree2(baij->rowvalues,baij->rowindices);CHKERRQ(ierr); 600 baij->rowvalues = 0; 601 602 PetscFunctionReturn(0); 603 } 604 605 extern PetscErrorCode MatSetValues_MPIBAIJ(Mat,PetscInt,const PetscInt[],PetscInt,const PetscInt[],const PetscScalar[],InsertMode); 606 #undef __FUNCT__ 607 #define __FUNCT__ "MatView_MPISBAIJ_ASCIIorDraworSocket" 608 static PetscErrorCode MatView_MPISBAIJ_ASCIIorDraworSocket(Mat mat,PetscViewer viewer) 609 { 610 Mat_MPISBAIJ *baij = (Mat_MPISBAIJ*)mat->data; 611 PetscErrorCode ierr; 612 PetscInt bs = mat->rmap->bs; 613 PetscMPIInt size = baij->size,rank = baij->rank; 614 PetscTruth iascii,isdraw; 615 PetscViewer sviewer; 616 PetscViewerFormat format; 617 618 PetscFunctionBegin; 619 ierr = PetscTypeCompare((PetscObject)viewer,PETSC_VIEWER_ASCII,&iascii);CHKERRQ(ierr); 620 ierr = PetscTypeCompare((PetscObject)viewer,PETSC_VIEWER_DRAW,&isdraw);CHKERRQ(ierr); 621 if (iascii) { 622 ierr = PetscViewerGetFormat(viewer,&format);CHKERRQ(ierr); 623 if (format == PETSC_VIEWER_ASCII_INFO_DETAIL) { 624 MatInfo info; 625 ierr = MPI_Comm_rank(((PetscObject)mat)->comm,&rank);CHKERRQ(ierr); 626 ierr = MatGetInfo(mat,MAT_LOCAL,&info);CHKERRQ(ierr); 627 ierr = PetscViewerASCIISynchronizedPrintf(viewer,"[%d] Local rows %D nz %D nz alloced %D bs %D mem %D\n", 628 rank,mat->rmap->n,(PetscInt)info.nz_used,(PetscInt)info.nz_allocated,mat->rmap->bs,(PetscInt)info.memory);CHKERRQ(ierr); 629 ierr = MatGetInfo(baij->A,MAT_LOCAL,&info);CHKERRQ(ierr); 630 ierr = PetscViewerASCIISynchronizedPrintf(viewer,"[%d] on-diagonal part: nz %D \n",rank,(PetscInt)info.nz_used);CHKERRQ(ierr); 631 ierr = MatGetInfo(baij->B,MAT_LOCAL,&info);CHKERRQ(ierr); 632 ierr = PetscViewerASCIISynchronizedPrintf(viewer,"[%d] off-diagonal part: nz %D \n",rank,(PetscInt)info.nz_used);CHKERRQ(ierr); 633 ierr = PetscViewerFlush(viewer);CHKERRQ(ierr); 634 ierr = PetscViewerASCIIPrintf(viewer,"Information on VecScatter used in matrix-vector product: \n");CHKERRQ(ierr); 635 ierr = VecScatterView(baij->Mvctx,viewer);CHKERRQ(ierr); 636 PetscFunctionReturn(0); 637 } else if (format == PETSC_VIEWER_ASCII_INFO) { 638 ierr = PetscViewerASCIIPrintf(viewer," block size is %D\n",bs);CHKERRQ(ierr); 639 PetscFunctionReturn(0); 640 } else if (format == PETSC_VIEWER_ASCII_FACTOR_INFO) { 641 PetscFunctionReturn(0); 642 } 643 } 644 645 if (isdraw) { 646 PetscDraw draw; 647 PetscTruth isnull; 648 ierr = PetscViewerDrawGetDraw(viewer,0,&draw);CHKERRQ(ierr); 649 ierr = PetscDrawIsNull(draw,&isnull);CHKERRQ(ierr); if (isnull) PetscFunctionReturn(0); 650 } 651 652 if (size == 1) { 653 ierr = PetscObjectSetName((PetscObject)baij->A,((PetscObject)mat)->name);CHKERRQ(ierr); 654 ierr = MatView(baij->A,viewer);CHKERRQ(ierr); 655 } else { 656 /* assemble the entire matrix onto first processor. */ 657 Mat A; 658 Mat_SeqSBAIJ *Aloc; 659 Mat_SeqBAIJ *Bloc; 660 PetscInt M = mat->rmap->N,N = mat->cmap->N,*ai,*aj,col,i,j,k,*rvals,mbs = baij->mbs; 661 MatScalar *a; 662 663 /* Should this be the same type as mat? */ 664 ierr = MatCreate(((PetscObject)mat)->comm,&A);CHKERRQ(ierr); 665 if (!rank) { 666 ierr = MatSetSizes(A,M,N,M,N);CHKERRQ(ierr); 667 } else { 668 ierr = MatSetSizes(A,0,0,M,N);CHKERRQ(ierr); 669 } 670 ierr = MatSetType(A,MATMPISBAIJ);CHKERRQ(ierr); 671 ierr = MatMPISBAIJSetPreallocation(A,mat->rmap->bs,0,PETSC_NULL,0,PETSC_NULL);CHKERRQ(ierr); 672 ierr = PetscLogObjectParent(mat,A);CHKERRQ(ierr); 673 674 /* copy over the A part */ 675 Aloc = (Mat_SeqSBAIJ*)baij->A->data; 676 ai = Aloc->i; aj = Aloc->j; a = Aloc->a; 677 ierr = PetscMalloc(bs*sizeof(PetscInt),&rvals);CHKERRQ(ierr); 678 679 for (i=0; i<mbs; i++) { 680 rvals[0] = bs*(baij->rstartbs + i); 681 for (j=1; j<bs; j++) { rvals[j] = rvals[j-1] + 1; } 682 for (j=ai[i]; j<ai[i+1]; j++) { 683 col = (baij->cstartbs+aj[j])*bs; 684 for (k=0; k<bs; k++) { 685 ierr = MatSetValues_MPISBAIJ(A,bs,rvals,1,&col,a,INSERT_VALUES);CHKERRQ(ierr); 686 col++; a += bs; 687 } 688 } 689 } 690 /* copy over the B part */ 691 Bloc = (Mat_SeqBAIJ*)baij->B->data; 692 ai = Bloc->i; aj = Bloc->j; a = Bloc->a; 693 for (i=0; i<mbs; i++) { 694 695 rvals[0] = bs*(baij->rstartbs + i); 696 for (j=1; j<bs; j++) { rvals[j] = rvals[j-1] + 1; } 697 for (j=ai[i]; j<ai[i+1]; j++) { 698 col = baij->garray[aj[j]]*bs; 699 for (k=0; k<bs; k++) { 700 ierr = MatSetValues_MPIBAIJ(A,bs,rvals,1,&col,a,INSERT_VALUES);CHKERRQ(ierr); 701 col++; a += bs; 702 } 703 } 704 } 705 ierr = PetscFree(rvals);CHKERRQ(ierr); 706 ierr = MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 707 ierr = MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 708 /* 709 Everyone has to call to draw the matrix since the graphics waits are 710 synchronized across all processors that share the PetscDraw object 711 */ 712 ierr = PetscViewerGetSingleton(viewer,&sviewer);CHKERRQ(ierr); 713 if (!rank) { 714 ierr = PetscObjectSetName((PetscObject)((Mat_MPISBAIJ*)(A->data))->A,((PetscObject)mat)->name);CHKERRQ(ierr); 715 ierr = MatView(((Mat_MPISBAIJ*)(A->data))->A,sviewer);CHKERRQ(ierr); 716 } 717 ierr = PetscViewerRestoreSingleton(viewer,&sviewer);CHKERRQ(ierr); 718 ierr = MatDestroy(A);CHKERRQ(ierr); 719 } 720 PetscFunctionReturn(0); 721 } 722 723 #undef __FUNCT__ 724 #define __FUNCT__ "MatView_MPISBAIJ" 725 PetscErrorCode MatView_MPISBAIJ(Mat mat,PetscViewer viewer) 726 { 727 PetscErrorCode ierr; 728 PetscTruth iascii,isdraw,issocket,isbinary; 729 730 PetscFunctionBegin; 731 ierr = PetscTypeCompare((PetscObject)viewer,PETSC_VIEWER_ASCII,&iascii);CHKERRQ(ierr); 732 ierr = PetscTypeCompare((PetscObject)viewer,PETSC_VIEWER_DRAW,&isdraw);CHKERRQ(ierr); 733 ierr = PetscTypeCompare((PetscObject)viewer,PETSC_VIEWER_SOCKET,&issocket);CHKERRQ(ierr); 734 ierr = PetscTypeCompare((PetscObject)viewer,PETSC_VIEWER_BINARY,&isbinary);CHKERRQ(ierr); 735 if (iascii || isdraw || issocket || isbinary) { 736 ierr = MatView_MPISBAIJ_ASCIIorDraworSocket(mat,viewer);CHKERRQ(ierr); 737 } else { 738 SETERRQ1(PETSC_ERR_SUP,"Viewer type %s not supported by MPISBAIJ matrices",((PetscObject)viewer)->type_name); 739 } 740 PetscFunctionReturn(0); 741 } 742 743 #undef __FUNCT__ 744 #define __FUNCT__ "MatDestroy_MPISBAIJ" 745 PetscErrorCode MatDestroy_MPISBAIJ(Mat mat) 746 { 747 Mat_MPISBAIJ *baij = (Mat_MPISBAIJ*)mat->data; 748 PetscErrorCode ierr; 749 750 PetscFunctionBegin; 751 #if defined(PETSC_USE_LOG) 752 PetscLogObjectState((PetscObject)mat,"Rows=%D,Cols=%D",mat->rmap->N,mat->cmap->N); 753 #endif 754 ierr = MatStashDestroy_Private(&mat->stash);CHKERRQ(ierr); 755 ierr = MatStashDestroy_Private(&mat->bstash);CHKERRQ(ierr); 756 ierr = MatDestroy(baij->A);CHKERRQ(ierr); 757 ierr = MatDestroy(baij->B);CHKERRQ(ierr); 758 #if defined (PETSC_USE_CTABLE) 759 if (baij->colmap) {ierr = PetscTableDestroy(baij->colmap);CHKERRQ(ierr);} 760 #else 761 ierr = PetscFree(baij->colmap);CHKERRQ(ierr); 762 #endif 763 ierr = PetscFree(baij->garray);CHKERRQ(ierr); 764 if (baij->lvec) {ierr = VecDestroy(baij->lvec);CHKERRQ(ierr);} 765 if (baij->Mvctx) {ierr = VecScatterDestroy(baij->Mvctx);CHKERRQ(ierr);} 766 if (baij->slvec0) { 767 ierr = VecDestroy(baij->slvec0);CHKERRQ(ierr); 768 ierr = VecDestroy(baij->slvec0b);CHKERRQ(ierr); 769 } 770 if (baij->slvec1) { 771 ierr = VecDestroy(baij->slvec1);CHKERRQ(ierr); 772 ierr = VecDestroy(baij->slvec1a);CHKERRQ(ierr); 773 ierr = VecDestroy(baij->slvec1b);CHKERRQ(ierr); 774 } 775 if (baij->sMvctx) {ierr = VecScatterDestroy(baij->sMvctx);CHKERRQ(ierr);} 776 ierr = PetscFree2(baij->rowvalues,baij->rowindices);CHKERRQ(ierr); 777 ierr = PetscFree(baij->barray);CHKERRQ(ierr); 778 ierr = PetscFree(baij->hd);CHKERRQ(ierr); 779 if (baij->diag) {ierr = VecDestroy(baij->diag);CHKERRQ(ierr);} 780 if (baij->bb1) {ierr = VecDestroy(baij->bb1);CHKERRQ(ierr);} 781 if (baij->xx1) {ierr = VecDestroy(baij->xx1);CHKERRQ(ierr);} 782 #if defined(PETSC_USE_SCALAR_MAT_SINGLE) 783 ierr = PetscFree(baij->setvaluescopy);CHKERRQ(ierr); 784 #endif 785 ierr = PetscFree(baij->in_loc);CHKERRQ(ierr); 786 ierr = PetscFree(baij->v_loc);CHKERRQ(ierr); 787 ierr = PetscFree(baij->rangebs);CHKERRQ(ierr); 788 ierr = PetscFree(baij);CHKERRQ(ierr); 789 790 ierr = PetscObjectChangeTypeName((PetscObject)mat,0);CHKERRQ(ierr); 791 ierr = PetscObjectComposeFunction((PetscObject)mat,"MatStoreValues_C","",PETSC_NULL);CHKERRQ(ierr); 792 ierr = PetscObjectComposeFunction((PetscObject)mat,"MatRetrieveValues_C","",PETSC_NULL);CHKERRQ(ierr); 793 ierr = PetscObjectComposeFunction((PetscObject)mat,"MatGetDiagonalBlock_C","",PETSC_NULL);CHKERRQ(ierr); 794 ierr = PetscObjectComposeFunction((PetscObject)mat,"MatMPISBAIJSetPreallocation_C","",PETSC_NULL);CHKERRQ(ierr); 795 PetscFunctionReturn(0); 796 } 797 798 #undef __FUNCT__ 799 #define __FUNCT__ "MatMult_MPISBAIJ_Hermitian" 800 PetscErrorCode MatMult_MPISBAIJ_Hermitian(Mat A,Vec xx,Vec yy) 801 { 802 Mat_MPISBAIJ *a = (Mat_MPISBAIJ*)A->data; 803 PetscErrorCode ierr; 804 PetscInt nt,mbs=a->mbs,bs=A->rmap->bs; 805 PetscScalar *x,*from; 806 807 PetscFunctionBegin; 808 ierr = VecGetLocalSize(xx,&nt);CHKERRQ(ierr); 809 if (nt != A->cmap->n) { 810 SETERRQ(PETSC_ERR_ARG_SIZ,"Incompatible partition of A and xx"); 811 } 812 813 /* diagonal part */ 814 ierr = (*a->A->ops->mult)(a->A,xx,a->slvec1a);CHKERRQ(ierr); 815 ierr = VecSet(a->slvec1b,0.0);CHKERRQ(ierr); 816 817 /* subdiagonal part */ 818 ierr = (*a->B->ops->multhermitiantranspose)(a->B,xx,a->slvec0b);CHKERRQ(ierr); 819 820 /* copy x into the vec slvec0 */ 821 ierr = VecGetArray(a->slvec0,&from);CHKERRQ(ierr); 822 ierr = VecGetArray(xx,&x);CHKERRQ(ierr); 823 824 ierr = PetscMemcpy(from,x,bs*mbs*sizeof(MatScalar));CHKERRQ(ierr); 825 ierr = VecRestoreArray(a->slvec0,&from);CHKERRQ(ierr); 826 ierr = VecRestoreArray(xx,&x);CHKERRQ(ierr); 827 828 ierr = VecScatterBegin(a->sMvctx,a->slvec0,a->slvec1,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 829 ierr = VecScatterEnd(a->sMvctx,a->slvec0,a->slvec1,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 830 /* supperdiagonal part */ 831 ierr = (*a->B->ops->multadd)(a->B,a->slvec1b,a->slvec1a,yy);CHKERRQ(ierr); 832 PetscFunctionReturn(0); 833 } 834 835 #undef __FUNCT__ 836 #define __FUNCT__ "MatMult_MPISBAIJ" 837 PetscErrorCode MatMult_MPISBAIJ(Mat A,Vec xx,Vec yy) 838 { 839 Mat_MPISBAIJ *a = (Mat_MPISBAIJ*)A->data; 840 PetscErrorCode ierr; 841 PetscInt nt,mbs=a->mbs,bs=A->rmap->bs; 842 PetscScalar *x,*from; 843 844 PetscFunctionBegin; 845 ierr = VecGetLocalSize(xx,&nt);CHKERRQ(ierr); 846 if (nt != A->cmap->n) { 847 SETERRQ(PETSC_ERR_ARG_SIZ,"Incompatible partition of A and xx"); 848 } 849 850 /* diagonal part */ 851 ierr = (*a->A->ops->mult)(a->A,xx,a->slvec1a);CHKERRQ(ierr); 852 ierr = VecSet(a->slvec1b,0.0);CHKERRQ(ierr); 853 854 /* subdiagonal part */ 855 ierr = (*a->B->ops->multtranspose)(a->B,xx,a->slvec0b);CHKERRQ(ierr); 856 857 /* copy x into the vec slvec0 */ 858 ierr = VecGetArray(a->slvec0,&from);CHKERRQ(ierr); 859 ierr = VecGetArray(xx,&x);CHKERRQ(ierr); 860 861 ierr = PetscMemcpy(from,x,bs*mbs*sizeof(MatScalar));CHKERRQ(ierr); 862 ierr = VecRestoreArray(a->slvec0,&from);CHKERRQ(ierr); 863 ierr = VecRestoreArray(xx,&x);CHKERRQ(ierr); 864 865 ierr = VecScatterBegin(a->sMvctx,a->slvec0,a->slvec1,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 866 ierr = VecScatterEnd(a->sMvctx,a->slvec0,a->slvec1,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 867 /* supperdiagonal part */ 868 ierr = (*a->B->ops->multadd)(a->B,a->slvec1b,a->slvec1a,yy);CHKERRQ(ierr); 869 PetscFunctionReturn(0); 870 } 871 872 #undef __FUNCT__ 873 #define __FUNCT__ "MatMult_MPISBAIJ_2comm" 874 PetscErrorCode MatMult_MPISBAIJ_2comm(Mat A,Vec xx,Vec yy) 875 { 876 Mat_MPISBAIJ *a = (Mat_MPISBAIJ*)A->data; 877 PetscErrorCode ierr; 878 PetscInt nt; 879 880 PetscFunctionBegin; 881 ierr = VecGetLocalSize(xx,&nt);CHKERRQ(ierr); 882 if (nt != A->cmap->n) { 883 SETERRQ(PETSC_ERR_ARG_SIZ,"Incompatible partition of A and xx"); 884 } 885 ierr = VecGetLocalSize(yy,&nt);CHKERRQ(ierr); 886 if (nt != A->rmap->N) { 887 SETERRQ(PETSC_ERR_ARG_SIZ,"Incompatible parition of A and yy"); 888 } 889 890 ierr = VecScatterBegin(a->Mvctx,xx,a->lvec,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 891 /* do diagonal part */ 892 ierr = (*a->A->ops->mult)(a->A,xx,yy);CHKERRQ(ierr); 893 /* do supperdiagonal part */ 894 ierr = VecScatterEnd(a->Mvctx,xx,a->lvec,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 895 ierr = (*a->B->ops->multadd)(a->B,a->lvec,yy,yy);CHKERRQ(ierr); 896 /* do subdiagonal part */ 897 ierr = (*a->B->ops->multtranspose)(a->B,xx,a->lvec);CHKERRQ(ierr); 898 ierr = VecScatterBegin(a->Mvctx,a->lvec,yy,ADD_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 899 ierr = VecScatterEnd(a->Mvctx,a->lvec,yy,ADD_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 900 901 PetscFunctionReturn(0); 902 } 903 904 #undef __FUNCT__ 905 #define __FUNCT__ "MatMultAdd_MPISBAIJ" 906 PetscErrorCode MatMultAdd_MPISBAIJ(Mat A,Vec xx,Vec yy,Vec zz) 907 { 908 Mat_MPISBAIJ *a = (Mat_MPISBAIJ*)A->data; 909 PetscErrorCode ierr; 910 PetscInt mbs=a->mbs,bs=A->rmap->bs; 911 PetscScalar *x,*from,zero=0.0; 912 913 PetscFunctionBegin; 914 /* 915 PetscSynchronizedPrintf(((PetscObject)A)->comm," MatMultAdd is called ...\n"); 916 PetscSynchronizedFlush(((PetscObject)A)->comm); 917 */ 918 /* diagonal part */ 919 ierr = (*a->A->ops->multadd)(a->A,xx,yy,a->slvec1a);CHKERRQ(ierr); 920 ierr = VecSet(a->slvec1b,zero);CHKERRQ(ierr); 921 922 /* subdiagonal part */ 923 ierr = (*a->B->ops->multtranspose)(a->B,xx,a->slvec0b);CHKERRQ(ierr); 924 925 /* copy x into the vec slvec0 */ 926 ierr = VecGetArray(a->slvec0,&from);CHKERRQ(ierr); 927 ierr = VecGetArray(xx,&x);CHKERRQ(ierr); 928 ierr = PetscMemcpy(from,x,bs*mbs*sizeof(MatScalar));CHKERRQ(ierr); 929 ierr = VecRestoreArray(a->slvec0,&from);CHKERRQ(ierr); 930 931 ierr = VecScatterBegin(a->sMvctx,a->slvec0,a->slvec1,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 932 ierr = VecRestoreArray(xx,&x);CHKERRQ(ierr); 933 ierr = VecScatterEnd(a->sMvctx,a->slvec0,a->slvec1,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 934 935 /* supperdiagonal part */ 936 ierr = (*a->B->ops->multadd)(a->B,a->slvec1b,a->slvec1a,zz);CHKERRQ(ierr); 937 938 PetscFunctionReturn(0); 939 } 940 941 #undef __FUNCT__ 942 #define __FUNCT__ "MatMultAdd_MPISBAIJ_2comm" 943 PetscErrorCode MatMultAdd_MPISBAIJ_2comm(Mat A,Vec xx,Vec yy,Vec zz) 944 { 945 Mat_MPISBAIJ *a = (Mat_MPISBAIJ*)A->data; 946 PetscErrorCode ierr; 947 948 PetscFunctionBegin; 949 ierr = VecScatterBegin(a->Mvctx,xx,a->lvec,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 950 /* do diagonal part */ 951 ierr = (*a->A->ops->multadd)(a->A,xx,yy,zz);CHKERRQ(ierr); 952 /* do supperdiagonal part */ 953 ierr = VecScatterEnd(a->Mvctx,xx,a->lvec,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 954 ierr = (*a->B->ops->multadd)(a->B,a->lvec,zz,zz);CHKERRQ(ierr); 955 956 /* do subdiagonal part */ 957 ierr = (*a->B->ops->multtranspose)(a->B,xx,a->lvec);CHKERRQ(ierr); 958 ierr = VecScatterBegin(a->Mvctx,a->lvec,zz,ADD_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 959 ierr = VecScatterEnd(a->Mvctx,a->lvec,zz,ADD_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 960 961 PetscFunctionReturn(0); 962 } 963 964 /* 965 This only works correctly for square matrices where the subblock A->A is the 966 diagonal block 967 */ 968 #undef __FUNCT__ 969 #define __FUNCT__ "MatGetDiagonal_MPISBAIJ" 970 PetscErrorCode MatGetDiagonal_MPISBAIJ(Mat A,Vec v) 971 { 972 Mat_MPISBAIJ *a = (Mat_MPISBAIJ*)A->data; 973 PetscErrorCode ierr; 974 975 PetscFunctionBegin; 976 /* if (a->rmap->N != a->cmap->N) SETERRQ(PETSC_ERR_SUP,"Supports only square matrix where A->A is diag block"); */ 977 ierr = MatGetDiagonal(a->A,v);CHKERRQ(ierr); 978 PetscFunctionReturn(0); 979 } 980 981 #undef __FUNCT__ 982 #define __FUNCT__ "MatScale_MPISBAIJ" 983 PetscErrorCode MatScale_MPISBAIJ(Mat A,PetscScalar aa) 984 { 985 Mat_MPISBAIJ *a = (Mat_MPISBAIJ*)A->data; 986 PetscErrorCode ierr; 987 988 PetscFunctionBegin; 989 ierr = MatScale(a->A,aa);CHKERRQ(ierr); 990 ierr = MatScale(a->B,aa);CHKERRQ(ierr); 991 PetscFunctionReturn(0); 992 } 993 994 #undef __FUNCT__ 995 #define __FUNCT__ "MatGetRow_MPISBAIJ" 996 PetscErrorCode MatGetRow_MPISBAIJ(Mat matin,PetscInt row,PetscInt *nz,PetscInt **idx,PetscScalar **v) 997 { 998 Mat_MPISBAIJ *mat = (Mat_MPISBAIJ*)matin->data; 999 PetscScalar *vworkA,*vworkB,**pvA,**pvB,*v_p; 1000 PetscErrorCode ierr; 1001 PetscInt bs = matin->rmap->bs,bs2 = mat->bs2,i,*cworkA,*cworkB,**pcA,**pcB; 1002 PetscInt nztot,nzA,nzB,lrow,brstart = matin->rmap->rstart,brend = matin->rmap->rend; 1003 PetscInt *cmap,*idx_p,cstart = mat->rstartbs; 1004 1005 PetscFunctionBegin; 1006 if (mat->getrowactive) SETERRQ(PETSC_ERR_ARG_WRONGSTATE,"Already active"); 1007 mat->getrowactive = PETSC_TRUE; 1008 1009 if (!mat->rowvalues && (idx || v)) { 1010 /* 1011 allocate enough space to hold information from the longest row. 1012 */ 1013 Mat_SeqSBAIJ *Aa = (Mat_SeqSBAIJ*)mat->A->data; 1014 Mat_SeqBAIJ *Ba = (Mat_SeqBAIJ*)mat->B->data; 1015 PetscInt max = 1,mbs = mat->mbs,tmp; 1016 for (i=0; i<mbs; i++) { 1017 tmp = Aa->i[i+1] - Aa->i[i] + Ba->i[i+1] - Ba->i[i]; /* row length */ 1018 if (max < tmp) { max = tmp; } 1019 } 1020 ierr = PetscMalloc2(max*bs2,PetscScalar,&mat->rowvalues,max*bs2,PetscInt,&mat->rowindices);CHKERRQ(ierr); 1021 } 1022 1023 if (row < brstart || row >= brend) SETERRQ(PETSC_ERR_SUP,"Only local rows") 1024 lrow = row - brstart; /* local row index */ 1025 1026 pvA = &vworkA; pcA = &cworkA; pvB = &vworkB; pcB = &cworkB; 1027 if (!v) {pvA = 0; pvB = 0;} 1028 if (!idx) {pcA = 0; if (!v) pcB = 0;} 1029 ierr = (*mat->A->ops->getrow)(mat->A,lrow,&nzA,pcA,pvA);CHKERRQ(ierr); 1030 ierr = (*mat->B->ops->getrow)(mat->B,lrow,&nzB,pcB,pvB);CHKERRQ(ierr); 1031 nztot = nzA + nzB; 1032 1033 cmap = mat->garray; 1034 if (v || idx) { 1035 if (nztot) { 1036 /* Sort by increasing column numbers, assuming A and B already sorted */ 1037 PetscInt imark = -1; 1038 if (v) { 1039 *v = v_p = mat->rowvalues; 1040 for (i=0; i<nzB; i++) { 1041 if (cmap[cworkB[i]/bs] < cstart) v_p[i] = vworkB[i]; 1042 else break; 1043 } 1044 imark = i; 1045 for (i=0; i<nzA; i++) v_p[imark+i] = vworkA[i]; 1046 for (i=imark; i<nzB; i++) v_p[nzA+i] = vworkB[i]; 1047 } 1048 if (idx) { 1049 *idx = idx_p = mat->rowindices; 1050 if (imark > -1) { 1051 for (i=0; i<imark; i++) { 1052 idx_p[i] = cmap[cworkB[i]/bs]*bs + cworkB[i]%bs; 1053 } 1054 } else { 1055 for (i=0; i<nzB; i++) { 1056 if (cmap[cworkB[i]/bs] < cstart) 1057 idx_p[i] = cmap[cworkB[i]/bs]*bs + cworkB[i]%bs ; 1058 else break; 1059 } 1060 imark = i; 1061 } 1062 for (i=0; i<nzA; i++) idx_p[imark+i] = cstart*bs + cworkA[i]; 1063 for (i=imark; i<nzB; i++) idx_p[nzA+i] = cmap[cworkB[i]/bs]*bs + cworkB[i]%bs ; 1064 } 1065 } else { 1066 if (idx) *idx = 0; 1067 if (v) *v = 0; 1068 } 1069 } 1070 *nz = nztot; 1071 ierr = (*mat->A->ops->restorerow)(mat->A,lrow,&nzA,pcA,pvA);CHKERRQ(ierr); 1072 ierr = (*mat->B->ops->restorerow)(mat->B,lrow,&nzB,pcB,pvB);CHKERRQ(ierr); 1073 PetscFunctionReturn(0); 1074 } 1075 1076 #undef __FUNCT__ 1077 #define __FUNCT__ "MatRestoreRow_MPISBAIJ" 1078 PetscErrorCode MatRestoreRow_MPISBAIJ(Mat mat,PetscInt row,PetscInt *nz,PetscInt **idx,PetscScalar **v) 1079 { 1080 Mat_MPISBAIJ *baij = (Mat_MPISBAIJ*)mat->data; 1081 1082 PetscFunctionBegin; 1083 if (!baij->getrowactive) { 1084 SETERRQ(PETSC_ERR_ARG_WRONGSTATE,"MatGetRow() must be called first"); 1085 } 1086 baij->getrowactive = PETSC_FALSE; 1087 PetscFunctionReturn(0); 1088 } 1089 1090 #undef __FUNCT__ 1091 #define __FUNCT__ "MatGetRowUpperTriangular_MPISBAIJ" 1092 PetscErrorCode MatGetRowUpperTriangular_MPISBAIJ(Mat A) 1093 { 1094 Mat_MPISBAIJ *a = (Mat_MPISBAIJ*)A->data; 1095 Mat_SeqSBAIJ *aA = (Mat_SeqSBAIJ*)a->A->data; 1096 1097 PetscFunctionBegin; 1098 aA->getrow_utriangular = PETSC_TRUE; 1099 PetscFunctionReturn(0); 1100 } 1101 #undef __FUNCT__ 1102 #define __FUNCT__ "MatRestoreRowUpperTriangular_MPISBAIJ" 1103 PetscErrorCode MatRestoreRowUpperTriangular_MPISBAIJ(Mat A) 1104 { 1105 Mat_MPISBAIJ *a = (Mat_MPISBAIJ*)A->data; 1106 Mat_SeqSBAIJ *aA = (Mat_SeqSBAIJ*)a->A->data; 1107 1108 PetscFunctionBegin; 1109 aA->getrow_utriangular = PETSC_FALSE; 1110 PetscFunctionReturn(0); 1111 } 1112 1113 #undef __FUNCT__ 1114 #define __FUNCT__ "MatRealPart_MPISBAIJ" 1115 PetscErrorCode MatRealPart_MPISBAIJ(Mat A) 1116 { 1117 Mat_MPISBAIJ *a = (Mat_MPISBAIJ*)A->data; 1118 PetscErrorCode ierr; 1119 1120 PetscFunctionBegin; 1121 ierr = MatRealPart(a->A);CHKERRQ(ierr); 1122 ierr = MatRealPart(a->B);CHKERRQ(ierr); 1123 PetscFunctionReturn(0); 1124 } 1125 1126 #undef __FUNCT__ 1127 #define __FUNCT__ "MatImaginaryPart_MPISBAIJ" 1128 PetscErrorCode MatImaginaryPart_MPISBAIJ(Mat A) 1129 { 1130 Mat_MPISBAIJ *a = (Mat_MPISBAIJ*)A->data; 1131 PetscErrorCode ierr; 1132 1133 PetscFunctionBegin; 1134 ierr = MatImaginaryPart(a->A);CHKERRQ(ierr); 1135 ierr = MatImaginaryPart(a->B);CHKERRQ(ierr); 1136 PetscFunctionReturn(0); 1137 } 1138 1139 #undef __FUNCT__ 1140 #define __FUNCT__ "MatZeroEntries_MPISBAIJ" 1141 PetscErrorCode MatZeroEntries_MPISBAIJ(Mat A) 1142 { 1143 Mat_MPISBAIJ *l = (Mat_MPISBAIJ*)A->data; 1144 PetscErrorCode ierr; 1145 1146 PetscFunctionBegin; 1147 ierr = MatZeroEntries(l->A);CHKERRQ(ierr); 1148 ierr = MatZeroEntries(l->B);CHKERRQ(ierr); 1149 PetscFunctionReturn(0); 1150 } 1151 1152 #undef __FUNCT__ 1153 #define __FUNCT__ "MatGetInfo_MPISBAIJ" 1154 PetscErrorCode MatGetInfo_MPISBAIJ(Mat matin,MatInfoType flag,MatInfo *info) 1155 { 1156 Mat_MPISBAIJ *a = (Mat_MPISBAIJ*)matin->data; 1157 Mat A = a->A,B = a->B; 1158 PetscErrorCode ierr; 1159 PetscReal isend[5],irecv[5]; 1160 1161 PetscFunctionBegin; 1162 info->block_size = (PetscReal)matin->rmap->bs; 1163 ierr = MatGetInfo(A,MAT_LOCAL,info);CHKERRQ(ierr); 1164 isend[0] = info->nz_used; isend[1] = info->nz_allocated; isend[2] = info->nz_unneeded; 1165 isend[3] = info->memory; isend[4] = info->mallocs; 1166 ierr = MatGetInfo(B,MAT_LOCAL,info);CHKERRQ(ierr); 1167 isend[0] += info->nz_used; isend[1] += info->nz_allocated; isend[2] += info->nz_unneeded; 1168 isend[3] += info->memory; isend[4] += info->mallocs; 1169 if (flag == MAT_LOCAL) { 1170 info->nz_used = isend[0]; 1171 info->nz_allocated = isend[1]; 1172 info->nz_unneeded = isend[2]; 1173 info->memory = isend[3]; 1174 info->mallocs = isend[4]; 1175 } else if (flag == MAT_GLOBAL_MAX) { 1176 ierr = MPI_Allreduce(isend,irecv,5,MPIU_REAL,MPI_MAX,((PetscObject)matin)->comm);CHKERRQ(ierr); 1177 info->nz_used = irecv[0]; 1178 info->nz_allocated = irecv[1]; 1179 info->nz_unneeded = irecv[2]; 1180 info->memory = irecv[3]; 1181 info->mallocs = irecv[4]; 1182 } else if (flag == MAT_GLOBAL_SUM) { 1183 ierr = MPI_Allreduce(isend,irecv,5,MPIU_REAL,MPI_SUM,((PetscObject)matin)->comm);CHKERRQ(ierr); 1184 info->nz_used = irecv[0]; 1185 info->nz_allocated = irecv[1]; 1186 info->nz_unneeded = irecv[2]; 1187 info->memory = irecv[3]; 1188 info->mallocs = irecv[4]; 1189 } else { 1190 SETERRQ1(PETSC_ERR_ARG_WRONG,"Unknown MatInfoType argument %d",(int)flag); 1191 } 1192 info->fill_ratio_given = 0; /* no parallel LU/ILU/Cholesky */ 1193 info->fill_ratio_needed = 0; 1194 info->factor_mallocs = 0; 1195 PetscFunctionReturn(0); 1196 } 1197 1198 #undef __FUNCT__ 1199 #define __FUNCT__ "MatSetOption_MPISBAIJ" 1200 PetscErrorCode MatSetOption_MPISBAIJ(Mat A,MatOption op,PetscTruth flg) 1201 { 1202 Mat_MPISBAIJ *a = (Mat_MPISBAIJ*)A->data; 1203 Mat_SeqSBAIJ *aA = (Mat_SeqSBAIJ*)a->A->data; 1204 PetscErrorCode ierr; 1205 1206 PetscFunctionBegin; 1207 switch (op) { 1208 case MAT_NEW_NONZERO_LOCATIONS: 1209 case MAT_NEW_NONZERO_ALLOCATION_ERR: 1210 case MAT_UNUSED_NONZERO_LOCATION_ERR: 1211 case MAT_KEEP_NONZERO_PATTERN: 1212 case MAT_NEW_NONZERO_LOCATION_ERR: 1213 ierr = MatSetOption(a->A,op,flg);CHKERRQ(ierr); 1214 ierr = MatSetOption(a->B,op,flg);CHKERRQ(ierr); 1215 break; 1216 case MAT_ROW_ORIENTED: 1217 a->roworiented = flg; 1218 ierr = MatSetOption(a->A,op,flg);CHKERRQ(ierr); 1219 ierr = MatSetOption(a->B,op,flg);CHKERRQ(ierr); 1220 break; 1221 case MAT_NEW_DIAGONALS: 1222 ierr = PetscInfo1(A,"Option %s ignored\n",MatOptions[op]);CHKERRQ(ierr); 1223 break; 1224 case MAT_IGNORE_OFF_PROC_ENTRIES: 1225 a->donotstash = flg; 1226 break; 1227 case MAT_USE_HASH_TABLE: 1228 a->ht_flag = flg; 1229 break; 1230 case MAT_HERMITIAN: 1231 if (!A->assembled) SETERRQ(PETSC_ERR_ARG_WRONGSTATE,"Must call MatAssemblyEnd() first"); 1232 ierr = MatSetOption(a->A,op,flg);CHKERRQ(ierr); 1233 A->ops->mult = MatMult_MPISBAIJ_Hermitian; 1234 break; 1235 case MAT_SYMMETRIC: 1236 ierr = MatSetOption(a->A,op,flg);CHKERRQ(ierr); 1237 break; 1238 case MAT_STRUCTURALLY_SYMMETRIC: 1239 ierr = MatSetOption(a->A,op,flg);CHKERRQ(ierr); 1240 break; 1241 case MAT_SYMMETRY_ETERNAL: 1242 if (!flg) SETERRQ(PETSC_ERR_SUP,"Matrix must be symmetric"); 1243 ierr = PetscInfo1(A,"Option %s ignored\n",MatOptions[op]);CHKERRQ(ierr); 1244 break; 1245 case MAT_IGNORE_LOWER_TRIANGULAR: 1246 aA->ignore_ltriangular = flg; 1247 break; 1248 case MAT_ERROR_LOWER_TRIANGULAR: 1249 aA->ignore_ltriangular = flg; 1250 break; 1251 case MAT_GETROW_UPPERTRIANGULAR: 1252 aA->getrow_utriangular = flg; 1253 break; 1254 default: 1255 SETERRQ1(PETSC_ERR_SUP,"unknown option %d",op); 1256 } 1257 PetscFunctionReturn(0); 1258 } 1259 1260 #undef __FUNCT__ 1261 #define __FUNCT__ "MatTranspose_MPISBAIJ" 1262 PetscErrorCode MatTranspose_MPISBAIJ(Mat A,MatReuse reuse,Mat *B) 1263 { 1264 PetscErrorCode ierr; 1265 PetscFunctionBegin; 1266 if (MAT_INITIAL_MATRIX || *B != A) { 1267 ierr = MatDuplicate(A,MAT_COPY_VALUES,B);CHKERRQ(ierr); 1268 } 1269 PetscFunctionReturn(0); 1270 } 1271 1272 #undef __FUNCT__ 1273 #define __FUNCT__ "MatDiagonalScale_MPISBAIJ" 1274 PetscErrorCode MatDiagonalScale_MPISBAIJ(Mat mat,Vec ll,Vec rr) 1275 { 1276 Mat_MPISBAIJ *baij = (Mat_MPISBAIJ*)mat->data; 1277 Mat a=baij->A, b=baij->B; 1278 PetscErrorCode ierr; 1279 PetscInt nv,m,n; 1280 PetscTruth flg; 1281 1282 PetscFunctionBegin; 1283 if (ll != rr){ 1284 ierr = VecEqual(ll,rr,&flg);CHKERRQ(ierr); 1285 if (!flg) 1286 SETERRQ(PETSC_ERR_ARG_OUTOFRANGE,"For symmetric format, left and right scaling vectors must be same\n"); 1287 } 1288 if (!ll) PetscFunctionReturn(0); 1289 1290 ierr = MatGetLocalSize(mat,&m,&n);CHKERRQ(ierr); 1291 if (m != n) SETERRQ2(PETSC_ERR_ARG_SIZ,"For symmetric format, local size %d %d must be same",m,n); 1292 1293 ierr = VecGetLocalSize(rr,&nv);CHKERRQ(ierr); 1294 if (nv!=n) SETERRQ(PETSC_ERR_ARG_SIZ,"Left and right vector non-conforming local size"); 1295 1296 ierr = VecScatterBegin(baij->Mvctx,rr,baij->lvec,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 1297 1298 /* left diagonalscale the off-diagonal part */ 1299 ierr = (*b->ops->diagonalscale)(b,ll,PETSC_NULL);CHKERRQ(ierr); 1300 1301 /* scale the diagonal part */ 1302 ierr = (*a->ops->diagonalscale)(a,ll,rr);CHKERRQ(ierr); 1303 1304 /* right diagonalscale the off-diagonal part */ 1305 ierr = VecScatterEnd(baij->Mvctx,rr,baij->lvec,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 1306 ierr = (*b->ops->diagonalscale)(b,PETSC_NULL,baij->lvec);CHKERRQ(ierr); 1307 PetscFunctionReturn(0); 1308 } 1309 1310 #undef __FUNCT__ 1311 #define __FUNCT__ "MatSetUnfactored_MPISBAIJ" 1312 PetscErrorCode MatSetUnfactored_MPISBAIJ(Mat A) 1313 { 1314 Mat_MPISBAIJ *a = (Mat_MPISBAIJ*)A->data; 1315 PetscErrorCode ierr; 1316 1317 PetscFunctionBegin; 1318 ierr = MatSetUnfactored(a->A);CHKERRQ(ierr); 1319 PetscFunctionReturn(0); 1320 } 1321 1322 static PetscErrorCode MatDuplicate_MPISBAIJ(Mat,MatDuplicateOption,Mat *); 1323 1324 #undef __FUNCT__ 1325 #define __FUNCT__ "MatEqual_MPISBAIJ" 1326 PetscErrorCode MatEqual_MPISBAIJ(Mat A,Mat B,PetscTruth *flag) 1327 { 1328 Mat_MPISBAIJ *matB = (Mat_MPISBAIJ*)B->data,*matA = (Mat_MPISBAIJ*)A->data; 1329 Mat a,b,c,d; 1330 PetscTruth flg; 1331 PetscErrorCode ierr; 1332 1333 PetscFunctionBegin; 1334 a = matA->A; b = matA->B; 1335 c = matB->A; d = matB->B; 1336 1337 ierr = MatEqual(a,c,&flg);CHKERRQ(ierr); 1338 if (flg) { 1339 ierr = MatEqual(b,d,&flg);CHKERRQ(ierr); 1340 } 1341 ierr = MPI_Allreduce(&flg,flag,1,MPI_INT,MPI_LAND,((PetscObject)A)->comm);CHKERRQ(ierr); 1342 PetscFunctionReturn(0); 1343 } 1344 1345 #undef __FUNCT__ 1346 #define __FUNCT__ "MatCopy_MPISBAIJ" 1347 PetscErrorCode MatCopy_MPISBAIJ(Mat A,Mat B,MatStructure str) 1348 { 1349 PetscErrorCode ierr; 1350 Mat_MPISBAIJ *a = (Mat_MPISBAIJ *)A->data; 1351 Mat_MPISBAIJ *b = (Mat_MPISBAIJ *)B->data; 1352 1353 PetscFunctionBegin; 1354 /* If the two matrices don't have the same copy implementation, they aren't compatible for fast copy. */ 1355 if ((str != SAME_NONZERO_PATTERN) || (A->ops->copy != B->ops->copy)) { 1356 ierr = MatGetRowUpperTriangular(A);CHKERRQ(ierr); 1357 ierr = MatCopy_Basic(A,B,str);CHKERRQ(ierr); 1358 ierr = MatRestoreRowUpperTriangular(A);CHKERRQ(ierr); 1359 } else { 1360 ierr = MatCopy(a->A,b->A,str);CHKERRQ(ierr); 1361 ierr = MatCopy(a->B,b->B,str);CHKERRQ(ierr); 1362 } 1363 PetscFunctionReturn(0); 1364 } 1365 1366 #undef __FUNCT__ 1367 #define __FUNCT__ "MatSetUpPreallocation_MPISBAIJ" 1368 PetscErrorCode MatSetUpPreallocation_MPISBAIJ(Mat A) 1369 { 1370 PetscErrorCode ierr; 1371 1372 PetscFunctionBegin; 1373 ierr = MatMPISBAIJSetPreallocation(A,-PetscMax(A->rmap->bs,1),PETSC_DEFAULT,0,PETSC_DEFAULT,0);CHKERRQ(ierr); 1374 PetscFunctionReturn(0); 1375 } 1376 1377 #undef __FUNCT__ 1378 #define __FUNCT__ "MatAXPY_MPISBAIJ" 1379 PetscErrorCode MatAXPY_MPISBAIJ(Mat Y,PetscScalar a,Mat X,MatStructure str) 1380 { 1381 PetscErrorCode ierr; 1382 Mat_MPISBAIJ *xx=(Mat_MPISBAIJ *)X->data,*yy=(Mat_MPISBAIJ *)Y->data; 1383 PetscBLASInt bnz,one=1; 1384 Mat_SeqSBAIJ *xa,*ya; 1385 Mat_SeqBAIJ *xb,*yb; 1386 1387 PetscFunctionBegin; 1388 if (str == SAME_NONZERO_PATTERN) { 1389 PetscScalar alpha = a; 1390 xa = (Mat_SeqSBAIJ *)xx->A->data; 1391 ya = (Mat_SeqSBAIJ *)yy->A->data; 1392 bnz = PetscBLASIntCast(xa->nz); 1393 BLASaxpy_(&bnz,&alpha,xa->a,&one,ya->a,&one); 1394 xb = (Mat_SeqBAIJ *)xx->B->data; 1395 yb = (Mat_SeqBAIJ *)yy->B->data; 1396 bnz = PetscBLASIntCast(xb->nz); 1397 BLASaxpy_(&bnz,&alpha,xb->a,&one,yb->a,&one); 1398 } else { 1399 ierr = MatGetRowUpperTriangular(X);CHKERRQ(ierr); 1400 ierr = MatAXPY_Basic(Y,a,X,str);CHKERRQ(ierr); 1401 ierr = MatRestoreRowUpperTriangular(X);CHKERRQ(ierr); 1402 } 1403 PetscFunctionReturn(0); 1404 } 1405 1406 #undef __FUNCT__ 1407 #define __FUNCT__ "MatSetBlockSize_MPISBAIJ" 1408 PetscErrorCode MatSetBlockSize_MPISBAIJ(Mat A,PetscInt bs) 1409 { 1410 Mat_MPISBAIJ *a = (Mat_MPISBAIJ*)A->data; 1411 PetscInt rbs,cbs; 1412 PetscErrorCode ierr; 1413 1414 PetscFunctionBegin; 1415 ierr = MatSetBlockSize(a->A,bs);CHKERRQ(ierr); 1416 ierr = MatSetBlockSize(a->B,bs);CHKERRQ(ierr); 1417 ierr = PetscLayoutGetBlockSize(A->rmap,&rbs);CHKERRQ(ierr); 1418 ierr = PetscLayoutGetBlockSize(A->cmap,&cbs);CHKERRQ(ierr); 1419 if (rbs != bs) SETERRQ2(PETSC_ERR_ARG_SIZ,"Attempt to set block size %d with SBAIJ %d",bs,rbs); 1420 if (cbs != bs) SETERRQ2(PETSC_ERR_ARG_SIZ,"Attempt to set block size %d with SBAIJ %d",bs,cbs); 1421 PetscFunctionReturn(0); 1422 } 1423 1424 #undef __FUNCT__ 1425 #define __FUNCT__ "MatGetSubMatrices_MPISBAIJ" 1426 PetscErrorCode MatGetSubMatrices_MPISBAIJ(Mat A,PetscInt n,const IS irow[],const IS icol[],MatReuse scall,Mat *B[]) 1427 { 1428 PetscErrorCode ierr; 1429 PetscInt i; 1430 PetscTruth flg; 1431 1432 PetscFunctionBegin; 1433 for (i=0; i<n; i++) { 1434 ierr = ISEqual(irow[i],icol[i],&flg);CHKERRQ(ierr); 1435 if (!flg) { 1436 SETERRQ(PETSC_ERR_SUP,"Can only get symmetric submatrix for MPISBAIJ matrices"); 1437 } 1438 } 1439 ierr = MatGetSubMatrices_MPIBAIJ(A,n,irow,icol,scall,B);CHKERRQ(ierr); 1440 PetscFunctionReturn(0); 1441 } 1442 1443 1444 /* -------------------------------------------------------------------*/ 1445 static struct _MatOps MatOps_Values = { 1446 MatSetValues_MPISBAIJ, 1447 MatGetRow_MPISBAIJ, 1448 MatRestoreRow_MPISBAIJ, 1449 MatMult_MPISBAIJ, 1450 /* 4*/ MatMultAdd_MPISBAIJ, 1451 MatMult_MPISBAIJ, /* transpose versions are same as non-transpose */ 1452 MatMultAdd_MPISBAIJ, 1453 0, 1454 0, 1455 0, 1456 /*10*/ 0, 1457 0, 1458 0, 1459 MatSOR_MPISBAIJ, 1460 MatTranspose_MPISBAIJ, 1461 /*15*/ MatGetInfo_MPISBAIJ, 1462 MatEqual_MPISBAIJ, 1463 MatGetDiagonal_MPISBAIJ, 1464 MatDiagonalScale_MPISBAIJ, 1465 MatNorm_MPISBAIJ, 1466 /*20*/ MatAssemblyBegin_MPISBAIJ, 1467 MatAssemblyEnd_MPISBAIJ, 1468 MatSetOption_MPISBAIJ, 1469 MatZeroEntries_MPISBAIJ, 1470 /*24*/ 0, 1471 0, 1472 0, 1473 0, 1474 0, 1475 /*29*/ MatSetUpPreallocation_MPISBAIJ, 1476 0, 1477 0, 1478 0, 1479 0, 1480 /*34*/ MatDuplicate_MPISBAIJ, 1481 0, 1482 0, 1483 0, 1484 0, 1485 /*39*/ MatAXPY_MPISBAIJ, 1486 MatGetSubMatrices_MPISBAIJ, 1487 MatIncreaseOverlap_MPISBAIJ, 1488 MatGetValues_MPISBAIJ, 1489 MatCopy_MPISBAIJ, 1490 /*44*/ 0, 1491 MatScale_MPISBAIJ, 1492 0, 1493 0, 1494 0, 1495 /*49*/ MatSetBlockSize_MPISBAIJ, 1496 0, 1497 0, 1498 0, 1499 0, 1500 /*54*/ 0, 1501 0, 1502 MatSetUnfactored_MPISBAIJ, 1503 0, 1504 MatSetValuesBlocked_MPISBAIJ, 1505 /*59*/ 0, 1506 0, 1507 0, 1508 0, 1509 0, 1510 /*64*/ 0, 1511 0, 1512 0, 1513 0, 1514 0, 1515 /*69*/ MatGetRowMaxAbs_MPISBAIJ, 1516 0, 1517 0, 1518 0, 1519 0, 1520 /*74*/ 0, 1521 0, 1522 0, 1523 0, 1524 0, 1525 /*79*/ 0, 1526 0, 1527 0, 1528 0, 1529 MatLoad_MPISBAIJ, 1530 /*84*/ 0, 1531 0, 1532 0, 1533 0, 1534 0, 1535 /*89*/ 0, 1536 0, 1537 0, 1538 0, 1539 0, 1540 /*94*/ 0, 1541 0, 1542 0, 1543 0, 1544 0, 1545 /*99*/ 0, 1546 0, 1547 0, 1548 0, 1549 0, 1550 /*104*/0, 1551 MatRealPart_MPISBAIJ, 1552 MatImaginaryPart_MPISBAIJ, 1553 MatGetRowUpperTriangular_MPISBAIJ, 1554 MatRestoreRowUpperTriangular_MPISBAIJ 1555 }; 1556 1557 1558 EXTERN_C_BEGIN 1559 #undef __FUNCT__ 1560 #define __FUNCT__ "MatGetDiagonalBlock_MPISBAIJ" 1561 PetscErrorCode PETSCMAT_DLLEXPORT MatGetDiagonalBlock_MPISBAIJ(Mat A,PetscTruth *iscopy,MatReuse reuse,Mat *a) 1562 { 1563 PetscFunctionBegin; 1564 *a = ((Mat_MPISBAIJ *)A->data)->A; 1565 *iscopy = PETSC_FALSE; 1566 PetscFunctionReturn(0); 1567 } 1568 EXTERN_C_END 1569 1570 EXTERN_C_BEGIN 1571 #undef __FUNCT__ 1572 #define __FUNCT__ "MatMPISBAIJSetPreallocation_MPISBAIJ" 1573 PetscErrorCode PETSCMAT_DLLEXPORT MatMPISBAIJSetPreallocation_MPISBAIJ(Mat B,PetscInt bs,PetscInt d_nz,PetscInt *d_nnz,PetscInt o_nz,PetscInt *o_nnz) 1574 { 1575 Mat_MPISBAIJ *b; 1576 PetscErrorCode ierr; 1577 PetscInt i,mbs,Mbs,newbs = PetscAbs(bs); 1578 1579 PetscFunctionBegin; 1580 if (bs < 0){ 1581 ierr = PetscOptionsBegin(((PetscObject)B)->comm,((PetscObject)B)->prefix,"Options for MPISBAIJ matrix","Mat");CHKERRQ(ierr); 1582 ierr = PetscOptionsInt("-mat_block_size","Set the blocksize used to store the matrix","MatMPIBAIJSetPreallocation",newbs,&newbs,PETSC_NULL);CHKERRQ(ierr); 1583 ierr = PetscOptionsEnd();CHKERRQ(ierr); 1584 bs = PetscAbs(bs); 1585 } 1586 if ((d_nnz || o_nnz) && newbs != bs) { 1587 SETERRQ(PETSC_ERR_ARG_WRONG,"Cannot change blocksize from command line if setting d_nnz or o_nnz"); 1588 } 1589 bs = newbs; 1590 1591 if (d_nz == PETSC_DECIDE || d_nz == PETSC_DEFAULT) d_nz = 3; 1592 if (o_nz == PETSC_DECIDE || o_nz == PETSC_DEFAULT) o_nz = 1; 1593 if (d_nz < 0) SETERRQ1(PETSC_ERR_ARG_OUTOFRANGE,"d_nz cannot be less than 0: value %D",d_nz); 1594 if (o_nz < 0) SETERRQ1(PETSC_ERR_ARG_OUTOFRANGE,"o_nz cannot be less than 0: value %D",o_nz); 1595 1596 B->rmap->bs = B->cmap->bs = bs; 1597 ierr = PetscLayoutSetUp(B->rmap);CHKERRQ(ierr); 1598 ierr = PetscLayoutSetUp(B->cmap);CHKERRQ(ierr); 1599 1600 if (d_nnz) { 1601 for (i=0; i<B->rmap->n/bs; i++) { 1602 if (d_nnz[i] < 0) SETERRQ2(PETSC_ERR_ARG_OUTOFRANGE,"d_nnz cannot be less than -1: local row %D value %D",i,d_nnz[i]); 1603 } 1604 } 1605 if (o_nnz) { 1606 for (i=0; i<B->rmap->n/bs; i++) { 1607 if (o_nnz[i] < 0) SETERRQ2(PETSC_ERR_ARG_OUTOFRANGE,"o_nnz cannot be less than -1: local row %D value %D",i,o_nnz[i]); 1608 } 1609 } 1610 1611 b = (Mat_MPISBAIJ*)B->data; 1612 mbs = B->rmap->n/bs; 1613 Mbs = B->rmap->N/bs; 1614 if (mbs*bs != B->rmap->n) { 1615 SETERRQ2(PETSC_ERR_ARG_SIZ,"No of local rows %D must be divisible by blocksize %D",B->rmap->N,bs); 1616 } 1617 1618 B->rmap->bs = bs; 1619 b->bs2 = bs*bs; 1620 b->mbs = mbs; 1621 b->nbs = mbs; 1622 b->Mbs = Mbs; 1623 b->Nbs = Mbs; 1624 1625 for (i=0; i<=b->size; i++) { 1626 b->rangebs[i] = B->rmap->range[i]/bs; 1627 } 1628 b->rstartbs = B->rmap->rstart/bs; 1629 b->rendbs = B->rmap->rend/bs; 1630 1631 b->cstartbs = B->cmap->rstart/bs; 1632 b->cendbs = B->cmap->rend/bs; 1633 1634 if (!B->preallocated) { 1635 ierr = MatCreate(PETSC_COMM_SELF,&b->A);CHKERRQ(ierr); 1636 ierr = MatSetSizes(b->A,B->rmap->n,B->cmap->n,B->rmap->n,B->cmap->n);CHKERRQ(ierr); 1637 ierr = MatSetType(b->A,MATSEQSBAIJ);CHKERRQ(ierr); 1638 ierr = PetscLogObjectParent(B,b->A);CHKERRQ(ierr); 1639 ierr = MatCreate(PETSC_COMM_SELF,&b->B);CHKERRQ(ierr); 1640 ierr = MatSetSizes(b->B,B->rmap->n,B->cmap->N,B->rmap->n,B->cmap->N);CHKERRQ(ierr); 1641 ierr = MatSetType(b->B,MATSEQBAIJ);CHKERRQ(ierr); 1642 ierr = PetscLogObjectParent(B,b->B);CHKERRQ(ierr); 1643 ierr = MatStashCreate_Private(((PetscObject)B)->comm,bs,&B->bstash);CHKERRQ(ierr); 1644 } 1645 1646 ierr = MatSeqSBAIJSetPreallocation(b->A,bs,d_nz,d_nnz);CHKERRQ(ierr); 1647 ierr = MatSeqBAIJSetPreallocation(b->B,bs,o_nz,o_nnz);CHKERRQ(ierr); 1648 B->preallocated = PETSC_TRUE; 1649 PetscFunctionReturn(0); 1650 } 1651 EXTERN_C_END 1652 1653 EXTERN_C_BEGIN 1654 #if defined(PETSC_HAVE_MUMPS) 1655 extern PetscErrorCode PETSCMAT_DLLEXPORT MatGetFactor_mpisbaij_mumps(Mat,MatFactorType,Mat*); 1656 #endif 1657 #if defined(PETSC_HAVE_SPOOLES) 1658 extern PetscErrorCode PETSCMAT_DLLEXPORT MatGetFactor_mpisbaij_spooles(Mat,MatFactorType,Mat*); 1659 #endif 1660 #if defined(PETSC_HAVE_PASTIX) 1661 extern PetscErrorCode MatGetFactor_mpisbaij_pastix(Mat,MatFactorType,Mat*); 1662 #endif 1663 EXTERN_C_END 1664 1665 /*MC 1666 MATMPISBAIJ - MATMPISBAIJ = "mpisbaij" - A matrix type to be used for distributed symmetric sparse block matrices, 1667 based on block compressed sparse row format. Only the upper triangular portion of the matrix is stored. 1668 1669 Options Database Keys: 1670 . -mat_type mpisbaij - sets the matrix type to "mpisbaij" during a call to MatSetFromOptions() 1671 1672 Level: beginner 1673 1674 .seealso: MatCreateMPISBAIJ 1675 M*/ 1676 1677 EXTERN_C_BEGIN 1678 #undef __FUNCT__ 1679 #define __FUNCT__ "MatCreate_MPISBAIJ" 1680 PetscErrorCode PETSCMAT_DLLEXPORT MatCreate_MPISBAIJ(Mat B) 1681 { 1682 Mat_MPISBAIJ *b; 1683 PetscErrorCode ierr; 1684 PetscTruth flg; 1685 1686 PetscFunctionBegin; 1687 1688 ierr = PetscNewLog(B,Mat_MPISBAIJ,&b);CHKERRQ(ierr); 1689 B->data = (void*)b; 1690 ierr = PetscMemcpy(B->ops,&MatOps_Values,sizeof(struct _MatOps));CHKERRQ(ierr); 1691 1692 B->ops->destroy = MatDestroy_MPISBAIJ; 1693 B->ops->view = MatView_MPISBAIJ; 1694 B->mapping = 0; 1695 B->assembled = PETSC_FALSE; 1696 1697 B->insertmode = NOT_SET_VALUES; 1698 ierr = MPI_Comm_rank(((PetscObject)B)->comm,&b->rank);CHKERRQ(ierr); 1699 ierr = MPI_Comm_size(((PetscObject)B)->comm,&b->size);CHKERRQ(ierr); 1700 1701 /* build local table of row and column ownerships */ 1702 ierr = PetscMalloc((b->size+2)*sizeof(PetscInt),&b->rangebs);CHKERRQ(ierr); 1703 1704 /* build cache for off array entries formed */ 1705 ierr = MatStashCreate_Private(((PetscObject)B)->comm,1,&B->stash);CHKERRQ(ierr); 1706 b->donotstash = PETSC_FALSE; 1707 b->colmap = PETSC_NULL; 1708 b->garray = PETSC_NULL; 1709 b->roworiented = PETSC_TRUE; 1710 1711 /* stuff used in block assembly */ 1712 b->barray = 0; 1713 1714 /* stuff used for matrix vector multiply */ 1715 b->lvec = 0; 1716 b->Mvctx = 0; 1717 b->slvec0 = 0; 1718 b->slvec0b = 0; 1719 b->slvec1 = 0; 1720 b->slvec1a = 0; 1721 b->slvec1b = 0; 1722 b->sMvctx = 0; 1723 1724 /* stuff for MatGetRow() */ 1725 b->rowindices = 0; 1726 b->rowvalues = 0; 1727 b->getrowactive = PETSC_FALSE; 1728 1729 /* hash table stuff */ 1730 b->ht = 0; 1731 b->hd = 0; 1732 b->ht_size = 0; 1733 b->ht_flag = PETSC_FALSE; 1734 b->ht_fact = 0; 1735 b->ht_total_ct = 0; 1736 b->ht_insert_ct = 0; 1737 1738 b->in_loc = 0; 1739 b->v_loc = 0; 1740 b->n_loc = 0; 1741 ierr = PetscOptionsBegin(((PetscObject)B)->comm,PETSC_NULL,"Options for loading MPISBAIJ matrix 1","Mat");CHKERRQ(ierr); 1742 ierr = PetscOptionsTruth("-mat_use_hash_table","Use hash table to save memory in constructing matrix","MatSetOption",PETSC_FALSE,&flg,PETSC_NULL);CHKERRQ(ierr); 1743 if (flg) { 1744 PetscReal fact = 1.39; 1745 ierr = MatSetOption(B,MAT_USE_HASH_TABLE,PETSC_TRUE);CHKERRQ(ierr); 1746 ierr = PetscOptionsReal("-mat_use_hash_table","Use hash table factor","MatMPIBAIJSetHashTableFactor",fact,&fact,PETSC_NULL);CHKERRQ(ierr); 1747 if (fact <= 1.0) fact = 1.39; 1748 ierr = MatMPIBAIJSetHashTableFactor(B,fact);CHKERRQ(ierr); 1749 ierr = PetscInfo1(B,"Hash table Factor used %5.2f\n",fact);CHKERRQ(ierr); 1750 } 1751 ierr = PetscOptionsEnd();CHKERRQ(ierr); 1752 1753 #if defined(PETSC_HAVE_PASTIX) 1754 ierr = PetscObjectComposeFunctionDynamic((PetscObject)B,"MatGetFactor_pastix_C", 1755 "MatGetFactor_mpisbaij_pastix", 1756 MatGetFactor_mpisbaij_pastix);CHKERRQ(ierr); 1757 #endif 1758 #if defined(PETSC_HAVE_MUMPS) 1759 ierr = PetscObjectComposeFunctionDynamic((PetscObject)B,"MatGetFactor_mumps_C", 1760 "MatGetFactor_mpisbaij_mumps", 1761 MatGetFactor_mpisbaij_mumps);CHKERRQ(ierr); 1762 #endif 1763 #if defined(PETSC_HAVE_SPOOLES) 1764 ierr = PetscObjectComposeFunctionDynamic((PetscObject)B,"MatGetFactor_spooles_C", 1765 "MatGetFactor_mpisbaij_spooles", 1766 MatGetFactor_mpisbaij_spooles);CHKERRQ(ierr); 1767 #endif 1768 ierr = PetscObjectComposeFunctionDynamic((PetscObject)B,"MatStoreValues_C", 1769 "MatStoreValues_MPISBAIJ", 1770 MatStoreValues_MPISBAIJ);CHKERRQ(ierr); 1771 ierr = PetscObjectComposeFunctionDynamic((PetscObject)B,"MatRetrieveValues_C", 1772 "MatRetrieveValues_MPISBAIJ", 1773 MatRetrieveValues_MPISBAIJ);CHKERRQ(ierr); 1774 ierr = PetscObjectComposeFunctionDynamic((PetscObject)B,"MatGetDiagonalBlock_C", 1775 "MatGetDiagonalBlock_MPISBAIJ", 1776 MatGetDiagonalBlock_MPISBAIJ);CHKERRQ(ierr); 1777 ierr = PetscObjectComposeFunctionDynamic((PetscObject)B,"MatMPISBAIJSetPreallocation_C", 1778 "MatMPISBAIJSetPreallocation_MPISBAIJ", 1779 MatMPISBAIJSetPreallocation_MPISBAIJ);CHKERRQ(ierr); 1780 B->symmetric = PETSC_TRUE; 1781 B->structurally_symmetric = PETSC_TRUE; 1782 B->symmetric_set = PETSC_TRUE; 1783 B->structurally_symmetric_set = PETSC_TRUE; 1784 ierr = PetscObjectChangeTypeName((PetscObject)B,MATMPISBAIJ);CHKERRQ(ierr); 1785 PetscFunctionReturn(0); 1786 } 1787 EXTERN_C_END 1788 1789 /*MC 1790 MATSBAIJ - MATSBAIJ = "sbaij" - A matrix type to be used for symmetric block sparse matrices. 1791 1792 This matrix type is identical to MATSEQSBAIJ when constructed with a single process communicator, 1793 and MATMPISBAIJ otherwise. 1794 1795 Options Database Keys: 1796 . -mat_type sbaij - sets the matrix type to "sbaij" during a call to MatSetFromOptions() 1797 1798 Level: beginner 1799 1800 .seealso: MatCreateMPISBAIJ,MATSEQSBAIJ,MATMPISBAIJ 1801 M*/ 1802 1803 EXTERN_C_BEGIN 1804 #undef __FUNCT__ 1805 #define __FUNCT__ "MatCreate_SBAIJ" 1806 PetscErrorCode PETSCMAT_DLLEXPORT MatCreate_SBAIJ(Mat A) 1807 { 1808 PetscErrorCode ierr; 1809 PetscMPIInt size; 1810 1811 PetscFunctionBegin; 1812 ierr = MPI_Comm_size(((PetscObject)A)->comm,&size);CHKERRQ(ierr); 1813 if (size == 1) { 1814 ierr = MatSetType(A,MATSEQSBAIJ);CHKERRQ(ierr); 1815 } else { 1816 ierr = MatSetType(A,MATMPISBAIJ);CHKERRQ(ierr); 1817 } 1818 PetscFunctionReturn(0); 1819 } 1820 EXTERN_C_END 1821 1822 #undef __FUNCT__ 1823 #define __FUNCT__ "MatMPISBAIJSetPreallocation" 1824 /*@C 1825 MatMPISBAIJSetPreallocation - For good matrix assembly performance 1826 the user should preallocate the matrix storage by setting the parameters 1827 d_nz (or d_nnz) and o_nz (or o_nnz). By setting these parameters accurately, 1828 performance can be increased by more than a factor of 50. 1829 1830 Collective on Mat 1831 1832 Input Parameters: 1833 + A - the matrix 1834 . bs - size of blockk 1835 . d_nz - number of block nonzeros per block row in diagonal portion of local 1836 submatrix (same for all local rows) 1837 . d_nnz - array containing the number of block nonzeros in the various block rows 1838 in the upper triangular and diagonal part of the in diagonal portion of the local 1839 (possibly different for each block row) or PETSC_NULL. You must leave room 1840 for the diagonal entry even if it is zero. 1841 . o_nz - number of block nonzeros per block row in the off-diagonal portion of local 1842 submatrix (same for all local rows). 1843 - o_nnz - array containing the number of nonzeros in the various block rows of the 1844 off-diagonal portion of the local submatrix (possibly different for 1845 each block row) or PETSC_NULL. 1846 1847 1848 Options Database Keys: 1849 . -mat_no_unroll - uses code that does not unroll the loops in the 1850 block calculations (much slower) 1851 . -mat_block_size - size of the blocks to use 1852 1853 Notes: 1854 1855 If PETSC_DECIDE or PETSC_DETERMINE is used for a particular argument on one processor 1856 than it must be used on all processors that share the object for that argument. 1857 1858 If the *_nnz parameter is given then the *_nz parameter is ignored 1859 1860 Storage Information: 1861 For a square global matrix we define each processor's diagonal portion 1862 to be its local rows and the corresponding columns (a square submatrix); 1863 each processor's off-diagonal portion encompasses the remainder of the 1864 local matrix (a rectangular submatrix). 1865 1866 The user can specify preallocated storage for the diagonal part of 1867 the local submatrix with either d_nz or d_nnz (not both). Set 1868 d_nz=PETSC_DEFAULT and d_nnz=PETSC_NULL for PETSc to control dynamic 1869 memory allocation. Likewise, specify preallocated storage for the 1870 off-diagonal part of the local submatrix with o_nz or o_nnz (not both). 1871 1872 You can call MatGetInfo() to get information on how effective the preallocation was; 1873 for example the fields mallocs,nz_allocated,nz_used,nz_unneeded; 1874 You can also run with the option -info and look for messages with the string 1875 malloc in them to see if additional memory allocation was needed. 1876 1877 Consider a processor that owns rows 3, 4 and 5 of a parallel matrix. In 1878 the figure below we depict these three local rows and all columns (0-11). 1879 1880 .vb 1881 0 1 2 3 4 5 6 7 8 9 10 11 1882 ------------------- 1883 row 3 | o o o d d d o o o o o o 1884 row 4 | o o o d d d o o o o o o 1885 row 5 | o o o d d d o o o o o o 1886 ------------------- 1887 .ve 1888 1889 Thus, any entries in the d locations are stored in the d (diagonal) 1890 submatrix, and any entries in the o locations are stored in the 1891 o (off-diagonal) submatrix. Note that the d matrix is stored in 1892 MatSeqSBAIJ format and the o submatrix in MATSEQBAIJ format. 1893 1894 Now d_nz should indicate the number of block nonzeros per row in the upper triangular 1895 plus the diagonal part of the d matrix, 1896 and o_nz should indicate the number of block nonzeros per row in the o matrix. 1897 In general, for PDE problems in which most nonzeros are near the diagonal, 1898 one expects d_nz >> o_nz. For large problems you MUST preallocate memory 1899 or you will get TERRIBLE performance; see the users' manual chapter on 1900 matrices. 1901 1902 Level: intermediate 1903 1904 .keywords: matrix, block, aij, compressed row, sparse, parallel 1905 1906 .seealso: MatCreate(), MatCreateSeqSBAIJ(), MatSetValues(), MatCreateMPIBAIJ() 1907 @*/ 1908 PetscErrorCode PETSCMAT_DLLEXPORT MatMPISBAIJSetPreallocation(Mat B,PetscInt bs,PetscInt d_nz,const PetscInt d_nnz[],PetscInt o_nz,const PetscInt o_nnz[]) 1909 { 1910 PetscErrorCode ierr,(*f)(Mat,PetscInt,PetscInt,const PetscInt[],PetscInt,const PetscInt[]); 1911 1912 PetscFunctionBegin; 1913 ierr = PetscObjectQueryFunction((PetscObject)B,"MatMPISBAIJSetPreallocation_C",(void (**)(void))&f);CHKERRQ(ierr); 1914 if (f) { 1915 ierr = (*f)(B,bs,d_nz,d_nnz,o_nz,o_nnz);CHKERRQ(ierr); 1916 } 1917 PetscFunctionReturn(0); 1918 } 1919 1920 #undef __FUNCT__ 1921 #define __FUNCT__ "MatCreateMPISBAIJ" 1922 /*@C 1923 MatCreateMPISBAIJ - Creates a sparse parallel matrix in symmetric block AIJ format 1924 (block compressed row). For good matrix assembly performance 1925 the user should preallocate the matrix storage by setting the parameters 1926 d_nz (or d_nnz) and o_nz (or o_nnz). By setting these parameters accurately, 1927 performance can be increased by more than a factor of 50. 1928 1929 Collective on MPI_Comm 1930 1931 Input Parameters: 1932 + comm - MPI communicator 1933 . bs - size of blockk 1934 . m - number of local rows (or PETSC_DECIDE to have calculated if M is given) 1935 This value should be the same as the local size used in creating the 1936 y vector for the matrix-vector product y = Ax. 1937 . n - number of local columns (or PETSC_DECIDE to have calculated if N is given) 1938 This value should be the same as the local size used in creating the 1939 x vector for the matrix-vector product y = Ax. 1940 . M - number of global rows (or PETSC_DETERMINE to have calculated if m is given) 1941 . N - number of global columns (or PETSC_DETERMINE to have calculated if n is given) 1942 . d_nz - number of block nonzeros per block row in diagonal portion of local 1943 submatrix (same for all local rows) 1944 . d_nnz - array containing the number of block nonzeros in the various block rows 1945 in the upper triangular portion of the in diagonal portion of the local 1946 (possibly different for each block block row) or PETSC_NULL. 1947 You must leave room for the diagonal entry even if it is zero. 1948 . o_nz - number of block nonzeros per block row in the off-diagonal portion of local 1949 submatrix (same for all local rows). 1950 - o_nnz - array containing the number of nonzeros in the various block rows of the 1951 off-diagonal portion of the local submatrix (possibly different for 1952 each block row) or PETSC_NULL. 1953 1954 Output Parameter: 1955 . A - the matrix 1956 1957 Options Database Keys: 1958 . -mat_no_unroll - uses code that does not unroll the loops in the 1959 block calculations (much slower) 1960 . -mat_block_size - size of the blocks to use 1961 . -mat_mpi - use the parallel matrix data structures even on one processor 1962 (defaults to using SeqBAIJ format on one processor) 1963 1964 It is recommended that one use the MatCreate(), MatSetType() and/or MatSetFromOptions(), 1965 MatXXXXSetPreallocation() paradgm instead of this routine directly. 1966 [MatXXXXSetPreallocation() is, for example, MatSeqAIJSetPreallocation] 1967 1968 Notes: 1969 The number of rows and columns must be divisible by blocksize. 1970 This matrix type does not support complex Hermitian operation. 1971 1972 The user MUST specify either the local or global matrix dimensions 1973 (possibly both). 1974 1975 If PETSC_DECIDE or PETSC_DETERMINE is used for a particular argument on one processor 1976 than it must be used on all processors that share the object for that argument. 1977 1978 If the *_nnz parameter is given then the *_nz parameter is ignored 1979 1980 Storage Information: 1981 For a square global matrix we define each processor's diagonal portion 1982 to be its local rows and the corresponding columns (a square submatrix); 1983 each processor's off-diagonal portion encompasses the remainder of the 1984 local matrix (a rectangular submatrix). 1985 1986 The user can specify preallocated storage for the diagonal part of 1987 the local submatrix with either d_nz or d_nnz (not both). Set 1988 d_nz=PETSC_DEFAULT and d_nnz=PETSC_NULL for PETSc to control dynamic 1989 memory allocation. Likewise, specify preallocated storage for the 1990 off-diagonal part of the local submatrix with o_nz or o_nnz (not both). 1991 1992 Consider a processor that owns rows 3, 4 and 5 of a parallel matrix. In 1993 the figure below we depict these three local rows and all columns (0-11). 1994 1995 .vb 1996 0 1 2 3 4 5 6 7 8 9 10 11 1997 ------------------- 1998 row 3 | o o o d d d o o o o o o 1999 row 4 | o o o d d d o o o o o o 2000 row 5 | o o o d d d o o o o o o 2001 ------------------- 2002 .ve 2003 2004 Thus, any entries in the d locations are stored in the d (diagonal) 2005 submatrix, and any entries in the o locations are stored in the 2006 o (off-diagonal) submatrix. Note that the d matrix is stored in 2007 MatSeqSBAIJ format and the o submatrix in MATSEQBAIJ format. 2008 2009 Now d_nz should indicate the number of block nonzeros per row in the upper triangular 2010 plus the diagonal part of the d matrix, 2011 and o_nz should indicate the number of block nonzeros per row in the o matrix. 2012 In general, for PDE problems in which most nonzeros are near the diagonal, 2013 one expects d_nz >> o_nz. For large problems you MUST preallocate memory 2014 or you will get TERRIBLE performance; see the users' manual chapter on 2015 matrices. 2016 2017 Level: intermediate 2018 2019 .keywords: matrix, block, aij, compressed row, sparse, parallel 2020 2021 .seealso: MatCreate(), MatCreateSeqSBAIJ(), MatSetValues(), MatCreateMPIBAIJ() 2022 @*/ 2023 2024 PetscErrorCode PETSCMAT_DLLEXPORT MatCreateMPISBAIJ(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) 2025 { 2026 PetscErrorCode ierr; 2027 PetscMPIInt size; 2028 2029 PetscFunctionBegin; 2030 ierr = MatCreate(comm,A);CHKERRQ(ierr); 2031 ierr = MatSetSizes(*A,m,n,M,N);CHKERRQ(ierr); 2032 ierr = MPI_Comm_size(comm,&size);CHKERRQ(ierr); 2033 if (size > 1) { 2034 ierr = MatSetType(*A,MATMPISBAIJ);CHKERRQ(ierr); 2035 ierr = MatMPISBAIJSetPreallocation(*A,bs,d_nz,d_nnz,o_nz,o_nnz);CHKERRQ(ierr); 2036 } else { 2037 ierr = MatSetType(*A,MATSEQSBAIJ);CHKERRQ(ierr); 2038 ierr = MatSeqSBAIJSetPreallocation(*A,bs,d_nz,d_nnz);CHKERRQ(ierr); 2039 } 2040 PetscFunctionReturn(0); 2041 } 2042 2043 2044 #undef __FUNCT__ 2045 #define __FUNCT__ "MatDuplicate_MPISBAIJ" 2046 static PetscErrorCode MatDuplicate_MPISBAIJ(Mat matin,MatDuplicateOption cpvalues,Mat *newmat) 2047 { 2048 Mat mat; 2049 Mat_MPISBAIJ *a,*oldmat = (Mat_MPISBAIJ*)matin->data; 2050 PetscErrorCode ierr; 2051 PetscInt len=0,nt,bs=matin->rmap->bs,mbs=oldmat->mbs; 2052 PetscScalar *array; 2053 2054 PetscFunctionBegin; 2055 *newmat = 0; 2056 ierr = MatCreate(((PetscObject)matin)->comm,&mat);CHKERRQ(ierr); 2057 ierr = MatSetSizes(mat,matin->rmap->n,matin->cmap->n,matin->rmap->N,matin->cmap->N);CHKERRQ(ierr); 2058 ierr = MatSetType(mat,((PetscObject)matin)->type_name);CHKERRQ(ierr); 2059 ierr = PetscMemcpy(mat->ops,matin->ops,sizeof(struct _MatOps));CHKERRQ(ierr); 2060 ierr = PetscLayoutCopy(matin->rmap,&mat->rmap);CHKERRQ(ierr); 2061 ierr = PetscLayoutCopy(matin->cmap,&mat->cmap);CHKERRQ(ierr); 2062 2063 mat->factor = matin->factor; 2064 mat->preallocated = PETSC_TRUE; 2065 mat->assembled = PETSC_TRUE; 2066 mat->insertmode = NOT_SET_VALUES; 2067 2068 a = (Mat_MPISBAIJ*)mat->data; 2069 a->bs2 = oldmat->bs2; 2070 a->mbs = oldmat->mbs; 2071 a->nbs = oldmat->nbs; 2072 a->Mbs = oldmat->Mbs; 2073 a->Nbs = oldmat->Nbs; 2074 2075 2076 a->size = oldmat->size; 2077 a->rank = oldmat->rank; 2078 a->donotstash = oldmat->donotstash; 2079 a->roworiented = oldmat->roworiented; 2080 a->rowindices = 0; 2081 a->rowvalues = 0; 2082 a->getrowactive = PETSC_FALSE; 2083 a->barray = 0; 2084 a->rstartbs = oldmat->rstartbs; 2085 a->rendbs = oldmat->rendbs; 2086 a->cstartbs = oldmat->cstartbs; 2087 a->cendbs = oldmat->cendbs; 2088 2089 /* hash table stuff */ 2090 a->ht = 0; 2091 a->hd = 0; 2092 a->ht_size = 0; 2093 a->ht_flag = oldmat->ht_flag; 2094 a->ht_fact = oldmat->ht_fact; 2095 a->ht_total_ct = 0; 2096 a->ht_insert_ct = 0; 2097 2098 ierr = PetscMemcpy(a->rangebs,oldmat->rangebs,(a->size+2)*sizeof(PetscInt));CHKERRQ(ierr); 2099 if (oldmat->colmap) { 2100 #if defined (PETSC_USE_CTABLE) 2101 ierr = PetscTableCreateCopy(oldmat->colmap,&a->colmap);CHKERRQ(ierr); 2102 #else 2103 ierr = PetscMalloc((a->Nbs)*sizeof(PetscInt),&a->colmap);CHKERRQ(ierr); 2104 ierr = PetscLogObjectMemory(mat,(a->Nbs)*sizeof(PetscInt));CHKERRQ(ierr); 2105 ierr = PetscMemcpy(a->colmap,oldmat->colmap,(a->Nbs)*sizeof(PetscInt));CHKERRQ(ierr); 2106 #endif 2107 } else a->colmap = 0; 2108 2109 if (oldmat->garray && (len = ((Mat_SeqBAIJ*)(oldmat->B->data))->nbs)) { 2110 ierr = PetscMalloc(len*sizeof(PetscInt),&a->garray);CHKERRQ(ierr); 2111 ierr = PetscLogObjectMemory(mat,len*sizeof(PetscInt));CHKERRQ(ierr); 2112 ierr = PetscMemcpy(a->garray,oldmat->garray,len*sizeof(PetscInt));CHKERRQ(ierr); 2113 } else a->garray = 0; 2114 2115 ierr = MatStashCreate_Private(((PetscObject)matin)->comm,matin->rmap->bs,&mat->bstash);CHKERRQ(ierr); 2116 ierr = VecDuplicate(oldmat->lvec,&a->lvec);CHKERRQ(ierr); 2117 ierr = PetscLogObjectParent(mat,a->lvec);CHKERRQ(ierr); 2118 ierr = VecScatterCopy(oldmat->Mvctx,&a->Mvctx);CHKERRQ(ierr); 2119 ierr = PetscLogObjectParent(mat,a->Mvctx);CHKERRQ(ierr); 2120 2121 ierr = VecDuplicate(oldmat->slvec0,&a->slvec0);CHKERRQ(ierr); 2122 ierr = PetscLogObjectParent(mat,a->slvec0);CHKERRQ(ierr); 2123 ierr = VecDuplicate(oldmat->slvec1,&a->slvec1);CHKERRQ(ierr); 2124 ierr = PetscLogObjectParent(mat,a->slvec1);CHKERRQ(ierr); 2125 2126 ierr = VecGetLocalSize(a->slvec1,&nt);CHKERRQ(ierr); 2127 ierr = VecGetArray(a->slvec1,&array);CHKERRQ(ierr); 2128 ierr = VecCreateSeqWithArray(PETSC_COMM_SELF,bs*mbs,array,&a->slvec1a);CHKERRQ(ierr); 2129 ierr = VecCreateSeqWithArray(PETSC_COMM_SELF,nt-bs*mbs,array+bs*mbs,&a->slvec1b);CHKERRQ(ierr); 2130 ierr = VecRestoreArray(a->slvec1,&array);CHKERRQ(ierr); 2131 ierr = VecGetArray(a->slvec0,&array);CHKERRQ(ierr); 2132 ierr = VecCreateSeqWithArray(PETSC_COMM_SELF,nt-bs*mbs,array+bs*mbs,&a->slvec0b);CHKERRQ(ierr); 2133 ierr = VecRestoreArray(a->slvec0,&array);CHKERRQ(ierr); 2134 ierr = PetscLogObjectParent(mat,a->slvec0);CHKERRQ(ierr); 2135 ierr = PetscLogObjectParent(mat,a->slvec1);CHKERRQ(ierr); 2136 ierr = PetscLogObjectParent(mat,a->slvec0b);CHKERRQ(ierr); 2137 ierr = PetscLogObjectParent(mat,a->slvec1a);CHKERRQ(ierr); 2138 ierr = PetscLogObjectParent(mat,a->slvec1b);CHKERRQ(ierr); 2139 2140 /* ierr = VecScatterCopy(oldmat->sMvctx,&a->sMvctx); - not written yet, replaced by the lazy trick: */ 2141 ierr = PetscObjectReference((PetscObject)oldmat->sMvctx);CHKERRQ(ierr); 2142 a->sMvctx = oldmat->sMvctx; 2143 ierr = PetscLogObjectParent(mat,a->sMvctx);CHKERRQ(ierr); 2144 2145 ierr = MatDuplicate(oldmat->A,cpvalues,&a->A);CHKERRQ(ierr); 2146 ierr = PetscLogObjectParent(mat,a->A);CHKERRQ(ierr); 2147 ierr = MatDuplicate(oldmat->B,cpvalues,&a->B);CHKERRQ(ierr); 2148 ierr = PetscLogObjectParent(mat,a->B);CHKERRQ(ierr); 2149 ierr = PetscFListDuplicate(((PetscObject)matin)->qlist,&((PetscObject)mat)->qlist);CHKERRQ(ierr); 2150 *newmat = mat; 2151 PetscFunctionReturn(0); 2152 } 2153 2154 #undef __FUNCT__ 2155 #define __FUNCT__ "MatLoad_MPISBAIJ" 2156 PetscErrorCode MatLoad_MPISBAIJ(PetscViewer viewer, const MatType type,Mat *newmat) 2157 { 2158 Mat A; 2159 PetscErrorCode ierr; 2160 PetscInt i,nz,j,rstart,rend; 2161 PetscScalar *vals,*buf; 2162 MPI_Comm comm = ((PetscObject)viewer)->comm; 2163 MPI_Status status; 2164 PetscMPIInt rank,size,tag = ((PetscObject)viewer)->tag,*sndcounts = 0,*browners,maxnz,*rowners,*locrowlens,mmbs; 2165 PetscInt header[4],*rowlengths = 0,M,N,m,*cols; 2166 PetscInt *procsnz = 0,jj,*mycols,*ibuf; 2167 PetscInt bs=1,Mbs,mbs,extra_rows; 2168 PetscInt *dlens,*odlens,*mask,*masked1,*masked2,rowcount,odcount; 2169 PetscInt dcount,kmax,k,nzcount,tmp; 2170 int fd; 2171 2172 PetscFunctionBegin; 2173 ierr = PetscOptionsBegin(comm,PETSC_NULL,"Options for loading MPISBAIJ matrix 2","Mat");CHKERRQ(ierr); 2174 ierr = PetscOptionsInt("-matload_block_size","Set the blocksize used to store the matrix","MatLoad",bs,&bs,PETSC_NULL);CHKERRQ(ierr); 2175 ierr = PetscOptionsEnd();CHKERRQ(ierr); 2176 2177 ierr = MPI_Comm_size(comm,&size);CHKERRQ(ierr); 2178 ierr = MPI_Comm_rank(comm,&rank);CHKERRQ(ierr); 2179 if (!rank) { 2180 ierr = PetscViewerBinaryGetDescriptor(viewer,&fd);CHKERRQ(ierr); 2181 ierr = PetscBinaryRead(fd,(char *)header,4,PETSC_INT);CHKERRQ(ierr); 2182 if (header[0] != MAT_FILE_COOKIE) SETERRQ(PETSC_ERR_FILE_UNEXPECTED,"not matrix object"); 2183 if (header[3] < 0) { 2184 SETERRQ(PETSC_ERR_FILE_UNEXPECTED,"Matrix stored in special format, cannot load as MPISBAIJ"); 2185 } 2186 } 2187 2188 ierr = MPI_Bcast(header+1,3,MPIU_INT,0,comm);CHKERRQ(ierr); 2189 M = header[1]; N = header[2]; 2190 2191 if (M != N) SETERRQ(PETSC_ERR_SUP,"Can only do square matrices"); 2192 2193 /* 2194 This code adds extra rows to make sure the number of rows is 2195 divisible by the blocksize 2196 */ 2197 Mbs = M/bs; 2198 extra_rows = bs - M + bs*(Mbs); 2199 if (extra_rows == bs) extra_rows = 0; 2200 else Mbs++; 2201 if (extra_rows &&!rank) { 2202 ierr = PetscInfo(viewer,"Padding loaded matrix to match blocksize\n");CHKERRQ(ierr); 2203 } 2204 2205 /* determine ownership of all rows */ 2206 mbs = Mbs/size + ((Mbs % size) > rank); 2207 m = mbs*bs; 2208 ierr = PetscMalloc2(size+1,PetscMPIInt,&rowners,size+1,PetscMPIInt,&browners);CHKERRQ(ierr); 2209 mmbs = PetscMPIIntCast(mbs); 2210 ierr = MPI_Allgather(&mmbs,1,MPI_INT,rowners+1,1,MPI_INT,comm);CHKERRQ(ierr); 2211 rowners[0] = 0; 2212 for (i=2; i<=size; i++) rowners[i] += rowners[i-1]; 2213 for (i=0; i<=size; i++) browners[i] = rowners[i]*bs; 2214 rstart = rowners[rank]; 2215 rend = rowners[rank+1]; 2216 2217 /* distribute row lengths to all processors */ 2218 ierr = PetscMalloc((rend-rstart)*bs*sizeof(PetscMPIInt),&locrowlens);CHKERRQ(ierr); 2219 if (!rank) { 2220 ierr = PetscMalloc((M+extra_rows)*sizeof(PetscInt),&rowlengths);CHKERRQ(ierr); 2221 ierr = PetscBinaryRead(fd,rowlengths,M,PETSC_INT);CHKERRQ(ierr); 2222 for (i=0; i<extra_rows; i++) rowlengths[M+i] = 1; 2223 ierr = PetscMalloc(size*sizeof(PetscMPIInt),&sndcounts);CHKERRQ(ierr); 2224 for (i=0; i<size; i++) sndcounts[i] = browners[i+1] - browners[i]; 2225 ierr = MPI_Scatterv(rowlengths,sndcounts,browners,MPIU_INT,locrowlens,(rend-rstart)*bs,MPIU_INT,0,comm);CHKERRQ(ierr); 2226 ierr = PetscFree(sndcounts);CHKERRQ(ierr); 2227 } else { 2228 ierr = MPI_Scatterv(0,0,0,MPIU_INT,locrowlens,(rend-rstart)*bs,MPIU_INT,0,comm);CHKERRQ(ierr); 2229 } 2230 2231 if (!rank) { /* procs[0] */ 2232 /* calculate the number of nonzeros on each processor */ 2233 ierr = PetscMalloc(size*sizeof(PetscInt),&procsnz);CHKERRQ(ierr); 2234 ierr = PetscMemzero(procsnz,size*sizeof(PetscInt));CHKERRQ(ierr); 2235 for (i=0; i<size; i++) { 2236 for (j=rowners[i]*bs; j< rowners[i+1]*bs; j++) { 2237 procsnz[i] += rowlengths[j]; 2238 } 2239 } 2240 ierr = PetscFree(rowlengths);CHKERRQ(ierr); 2241 2242 /* determine max buffer needed and allocate it */ 2243 maxnz = 0; 2244 for (i=0; i<size; i++) { 2245 maxnz = PetscMax(maxnz,procsnz[i]); 2246 } 2247 ierr = PetscMalloc(maxnz*sizeof(PetscInt),&cols);CHKERRQ(ierr); 2248 2249 /* read in my part of the matrix column indices */ 2250 nz = procsnz[0]; 2251 ierr = PetscMalloc(nz*sizeof(PetscInt),&ibuf);CHKERRQ(ierr); 2252 mycols = ibuf; 2253 if (size == 1) nz -= extra_rows; 2254 ierr = PetscBinaryRead(fd,mycols,nz,PETSC_INT);CHKERRQ(ierr); 2255 if (size == 1) for (i=0; i< extra_rows; i++) { mycols[nz+i] = M+i; } 2256 2257 /* read in every ones (except the last) and ship off */ 2258 for (i=1; i<size-1; i++) { 2259 nz = procsnz[i]; 2260 ierr = PetscBinaryRead(fd,cols,nz,PETSC_INT);CHKERRQ(ierr); 2261 ierr = MPI_Send(cols,nz,MPIU_INT,i,tag,comm);CHKERRQ(ierr); 2262 } 2263 /* read in the stuff for the last proc */ 2264 if (size != 1) { 2265 nz = procsnz[size-1] - extra_rows; /* the extra rows are not on the disk */ 2266 ierr = PetscBinaryRead(fd,cols,nz,PETSC_INT);CHKERRQ(ierr); 2267 for (i=0; i<extra_rows; i++) cols[nz+i] = M+i; 2268 ierr = MPI_Send(cols,nz+extra_rows,MPIU_INT,size-1,tag,comm);CHKERRQ(ierr); 2269 } 2270 ierr = PetscFree(cols);CHKERRQ(ierr); 2271 } else { /* procs[i], i>0 */ 2272 /* determine buffer space needed for message */ 2273 nz = 0; 2274 for (i=0; i<m; i++) { 2275 nz += locrowlens[i]; 2276 } 2277 ierr = PetscMalloc(nz*sizeof(PetscInt),&ibuf);CHKERRQ(ierr); 2278 mycols = ibuf; 2279 /* receive message of column indices*/ 2280 ierr = MPI_Recv(mycols,nz,MPIU_INT,0,tag,comm,&status);CHKERRQ(ierr); 2281 ierr = MPI_Get_count(&status,MPIU_INT,&maxnz);CHKERRQ(ierr); 2282 if (maxnz != nz) SETERRQ(PETSC_ERR_FILE_UNEXPECTED,"something is wrong with file"); 2283 } 2284 2285 /* loop over local rows, determining number of off diagonal entries */ 2286 ierr = PetscMalloc2(rend-rstart,PetscInt,&dlens,rend-rstart,PetscInt,&odlens);CHKERRQ(ierr); 2287 ierr = PetscMalloc3(Mbs,PetscInt,&mask,Mbs,PetscInt,&masked1,Mbs,PetscInt,&masked2);CHKERRQ(ierr); 2288 ierr = PetscMemzero(mask,Mbs*sizeof(PetscInt));CHKERRQ(ierr); 2289 ierr = PetscMemzero(masked1,Mbs*sizeof(PetscInt));CHKERRQ(ierr); 2290 ierr = PetscMemzero(masked2,Mbs*sizeof(PetscInt));CHKERRQ(ierr); 2291 rowcount = 0; 2292 nzcount = 0; 2293 for (i=0; i<mbs; i++) { 2294 dcount = 0; 2295 odcount = 0; 2296 for (j=0; j<bs; j++) { 2297 kmax = locrowlens[rowcount]; 2298 for (k=0; k<kmax; k++) { 2299 tmp = mycols[nzcount++]/bs; /* block col. index */ 2300 if (!mask[tmp]) { 2301 mask[tmp] = 1; 2302 if (tmp < rstart || tmp >= rend) masked2[odcount++] = tmp; /* entry in off-diag portion */ 2303 else masked1[dcount++] = tmp; /* entry in diag portion */ 2304 } 2305 } 2306 rowcount++; 2307 } 2308 2309 dlens[i] = dcount; /* d_nzz[i] */ 2310 odlens[i] = odcount; /* o_nzz[i] */ 2311 2312 /* zero out the mask elements we set */ 2313 for (j=0; j<dcount; j++) mask[masked1[j]] = 0; 2314 for (j=0; j<odcount; j++) mask[masked2[j]] = 0; 2315 } 2316 2317 /* create our matrix */ 2318 ierr = MatCreate(comm,&A);CHKERRQ(ierr); 2319 ierr = MatSetSizes(A,m,m,PETSC_DETERMINE,PETSC_DETERMINE);CHKERRQ(ierr); 2320 ierr = MatSetType(A,type);CHKERRQ(ierr); 2321 ierr = MatSetOption(A,MAT_IGNORE_LOWER_TRIANGULAR,PETSC_TRUE);CHKERRQ(ierr); 2322 ierr = MatMPISBAIJSetPreallocation(A,bs,0,dlens,0,odlens);CHKERRQ(ierr); 2323 2324 if (!rank) { 2325 ierr = PetscMalloc(maxnz*sizeof(PetscScalar),&buf);CHKERRQ(ierr); 2326 /* read in my part of the matrix numerical values */ 2327 nz = procsnz[0]; 2328 vals = buf; 2329 mycols = ibuf; 2330 if (size == 1) nz -= extra_rows; 2331 ierr = PetscBinaryRead(fd,vals,nz,PETSC_SCALAR);CHKERRQ(ierr); 2332 if (size == 1) for (i=0; i< extra_rows; i++) { vals[nz+i] = 1.0; } 2333 2334 /* insert into matrix */ 2335 jj = rstart*bs; 2336 for (i=0; i<m; i++) { 2337 ierr = MatSetValues(A,1,&jj,locrowlens[i],mycols,vals,INSERT_VALUES);CHKERRQ(ierr); 2338 mycols += locrowlens[i]; 2339 vals += locrowlens[i]; 2340 jj++; 2341 } 2342 2343 /* read in other processors (except the last one) and ship out */ 2344 for (i=1; i<size-1; i++) { 2345 nz = procsnz[i]; 2346 vals = buf; 2347 ierr = PetscBinaryRead(fd,vals,nz,PETSC_SCALAR);CHKERRQ(ierr); 2348 ierr = MPI_Send(vals,nz,MPIU_SCALAR,i,((PetscObject)A)->tag,comm);CHKERRQ(ierr); 2349 } 2350 /* the last proc */ 2351 if (size != 1){ 2352 nz = procsnz[i] - extra_rows; 2353 vals = buf; 2354 ierr = PetscBinaryRead(fd,vals,nz,PETSC_SCALAR);CHKERRQ(ierr); 2355 for (i=0; i<extra_rows; i++) vals[nz+i] = 1.0; 2356 ierr = MPI_Send(vals,nz+extra_rows,MPIU_SCALAR,size-1,((PetscObject)A)->tag,comm);CHKERRQ(ierr); 2357 } 2358 ierr = PetscFree(procsnz);CHKERRQ(ierr); 2359 2360 } else { 2361 /* receive numeric values */ 2362 ierr = PetscMalloc(nz*sizeof(PetscScalar),&buf);CHKERRQ(ierr); 2363 2364 /* receive message of values*/ 2365 vals = buf; 2366 mycols = ibuf; 2367 ierr = MPI_Recv(vals,nz,MPIU_SCALAR,0,((PetscObject)A)->tag,comm,&status);CHKERRQ(ierr); 2368 ierr = MPI_Get_count(&status,MPIU_SCALAR,&maxnz);CHKERRQ(ierr); 2369 if (maxnz != nz) SETERRQ(PETSC_ERR_FILE_UNEXPECTED,"something is wrong with file"); 2370 2371 /* insert into matrix */ 2372 jj = rstart*bs; 2373 for (i=0; i<m; i++) { 2374 ierr = MatSetValues_MPISBAIJ(A,1,&jj,locrowlens[i],mycols,vals,INSERT_VALUES);CHKERRQ(ierr); 2375 mycols += locrowlens[i]; 2376 vals += locrowlens[i]; 2377 jj++; 2378 } 2379 } 2380 2381 ierr = PetscFree(locrowlens);CHKERRQ(ierr); 2382 ierr = PetscFree(buf);CHKERRQ(ierr); 2383 ierr = PetscFree(ibuf);CHKERRQ(ierr); 2384 ierr = PetscFree2(rowners,browners);CHKERRQ(ierr); 2385 ierr = PetscFree2(dlens,odlens);CHKERRQ(ierr); 2386 ierr = PetscFree3(mask,masked1,masked2);CHKERRQ(ierr); 2387 ierr = MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 2388 ierr = MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 2389 *newmat = A; 2390 PetscFunctionReturn(0); 2391 } 2392 2393 #undef __FUNCT__ 2394 #define __FUNCT__ "MatMPISBAIJSetHashTableFactor" 2395 /*XXXXX@ 2396 MatMPISBAIJSetHashTableFactor - Sets the factor required to compute the size of the HashTable. 2397 2398 Input Parameters: 2399 . mat - the matrix 2400 . fact - factor 2401 2402 Collective on Mat 2403 2404 Level: advanced 2405 2406 Notes: 2407 This can also be set by the command line option: -mat_use_hash_table fact 2408 2409 .keywords: matrix, hashtable, factor, HT 2410 2411 .seealso: MatSetOption() 2412 @XXXXX*/ 2413 2414 2415 #undef __FUNCT__ 2416 #define __FUNCT__ "MatGetRowMaxAbs_MPISBAIJ" 2417 PetscErrorCode MatGetRowMaxAbs_MPISBAIJ(Mat A,Vec v,PetscInt idx[]) 2418 { 2419 Mat_MPISBAIJ *a = (Mat_MPISBAIJ*)A->data; 2420 Mat_SeqBAIJ *b = (Mat_SeqBAIJ*)(a->B)->data; 2421 PetscReal atmp; 2422 PetscReal *work,*svalues,*rvalues; 2423 PetscErrorCode ierr; 2424 PetscInt i,bs,mbs,*bi,*bj,brow,j,ncols,krow,kcol,col,row,Mbs,bcol; 2425 PetscMPIInt rank,size; 2426 PetscInt *rowners_bs,dest,count,source; 2427 PetscScalar *va; 2428 MatScalar *ba; 2429 MPI_Status stat; 2430 2431 PetscFunctionBegin; 2432 if (idx) SETERRQ(PETSC_ERR_SUP,"Send email to petsc-maint@mcs.anl.gov"); 2433 ierr = MatGetRowMaxAbs(a->A,v,PETSC_NULL);CHKERRQ(ierr); 2434 ierr = VecGetArray(v,&va);CHKERRQ(ierr); 2435 2436 ierr = MPI_Comm_size(((PetscObject)A)->comm,&size);CHKERRQ(ierr); 2437 ierr = MPI_Comm_rank(((PetscObject)A)->comm,&rank);CHKERRQ(ierr); 2438 2439 bs = A->rmap->bs; 2440 mbs = a->mbs; 2441 Mbs = a->Mbs; 2442 ba = b->a; 2443 bi = b->i; 2444 bj = b->j; 2445 2446 /* find ownerships */ 2447 rowners_bs = A->rmap->range; 2448 2449 /* each proc creates an array to be distributed */ 2450 ierr = PetscMalloc(bs*Mbs*sizeof(PetscReal),&work);CHKERRQ(ierr); 2451 ierr = PetscMemzero(work,bs*Mbs*sizeof(PetscReal));CHKERRQ(ierr); 2452 2453 /* row_max for B */ 2454 if (rank != size-1){ 2455 for (i=0; i<mbs; i++) { 2456 ncols = bi[1] - bi[0]; bi++; 2457 brow = bs*i; 2458 for (j=0; j<ncols; j++){ 2459 bcol = bs*(*bj); 2460 for (kcol=0; kcol<bs; kcol++){ 2461 col = bcol + kcol; /* local col index */ 2462 col += rowners_bs[rank+1]; /* global col index */ 2463 for (krow=0; krow<bs; krow++){ 2464 atmp = PetscAbsScalar(*ba); ba++; 2465 row = brow + krow; /* local row index */ 2466 if (PetscRealPart(va[row]) < atmp) va[row] = atmp; 2467 if (work[col] < atmp) work[col] = atmp; 2468 } 2469 } 2470 bj++; 2471 } 2472 } 2473 2474 /* send values to its owners */ 2475 for (dest=rank+1; dest<size; dest++){ 2476 svalues = work + rowners_bs[dest]; 2477 count = rowners_bs[dest+1]-rowners_bs[dest]; 2478 ierr = MPI_Send(svalues,count,MPIU_REAL,dest,rank,((PetscObject)A)->comm);CHKERRQ(ierr); 2479 } 2480 } 2481 2482 /* receive values */ 2483 if (rank){ 2484 rvalues = work; 2485 count = rowners_bs[rank+1]-rowners_bs[rank]; 2486 for (source=0; source<rank; source++){ 2487 ierr = MPI_Recv(rvalues,count,MPIU_REAL,MPI_ANY_SOURCE,MPI_ANY_TAG,((PetscObject)A)->comm,&stat);CHKERRQ(ierr); 2488 /* process values */ 2489 for (i=0; i<count; i++){ 2490 if (PetscRealPart(va[i]) < rvalues[i]) va[i] = rvalues[i]; 2491 } 2492 } 2493 } 2494 2495 ierr = VecRestoreArray(v,&va);CHKERRQ(ierr); 2496 ierr = PetscFree(work);CHKERRQ(ierr); 2497 PetscFunctionReturn(0); 2498 } 2499 2500 #undef __FUNCT__ 2501 #define __FUNCT__ "MatSOR_MPISBAIJ" 2502 PetscErrorCode MatSOR_MPISBAIJ(Mat matin,Vec bb,PetscReal omega,MatSORType flag,PetscReal fshift,PetscInt its,PetscInt lits,Vec xx) 2503 { 2504 Mat_MPISBAIJ *mat = (Mat_MPISBAIJ*)matin->data; 2505 PetscErrorCode ierr; 2506 PetscInt mbs=mat->mbs,bs=matin->rmap->bs; 2507 PetscScalar *x,*b,*ptr,*from; 2508 Vec bb1; 2509 2510 PetscFunctionBegin; 2511 if (its <= 0 || lits <= 0) SETERRQ2(PETSC_ERR_ARG_WRONG,"Relaxation requires global its %D and local its %D both positive",its,lits); 2512 if (bs > 1) SETERRQ(PETSC_ERR_SUP,"SSOR for block size > 1 is not yet implemented"); 2513 2514 if (flag == SOR_APPLY_UPPER) { 2515 ierr = (*mat->A->ops->sor)(mat->A,bb,omega,flag,fshift,lits,1,xx);CHKERRQ(ierr); 2516 PetscFunctionReturn(0); 2517 } 2518 2519 if ((flag & SOR_LOCAL_SYMMETRIC_SWEEP) == SOR_LOCAL_SYMMETRIC_SWEEP){ 2520 if ( flag & SOR_ZERO_INITIAL_GUESS ) { 2521 ierr = (*mat->A->ops->sor)(mat->A,bb,omega,flag,fshift,lits,lits,xx);CHKERRQ(ierr); 2522 its--; 2523 } 2524 2525 ierr = VecDuplicate(bb,&bb1);CHKERRQ(ierr); 2526 while (its--){ 2527 2528 /* lower triangular part: slvec0b = - B^T*xx */ 2529 ierr = (*mat->B->ops->multtranspose)(mat->B,xx,mat->slvec0b);CHKERRQ(ierr); 2530 2531 /* copy xx into slvec0a */ 2532 ierr = VecGetArray(mat->slvec0,&ptr);CHKERRQ(ierr); 2533 ierr = VecGetArray(xx,&x);CHKERRQ(ierr); 2534 ierr = PetscMemcpy(ptr,x,bs*mbs*sizeof(MatScalar));CHKERRQ(ierr); 2535 ierr = VecRestoreArray(mat->slvec0,&ptr);CHKERRQ(ierr); 2536 2537 ierr = VecScale(mat->slvec0,-1.0);CHKERRQ(ierr); 2538 2539 /* copy bb into slvec1a */ 2540 ierr = VecGetArray(mat->slvec1,&ptr);CHKERRQ(ierr); 2541 ierr = VecGetArray(bb,&b);CHKERRQ(ierr); 2542 ierr = PetscMemcpy(ptr,b,bs*mbs*sizeof(MatScalar));CHKERRQ(ierr); 2543 ierr = VecRestoreArray(mat->slvec1,&ptr);CHKERRQ(ierr); 2544 2545 /* set slvec1b = 0 */ 2546 ierr = VecSet(mat->slvec1b,0.0);CHKERRQ(ierr); 2547 2548 ierr = VecScatterBegin(mat->sMvctx,mat->slvec0,mat->slvec1,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 2549 ierr = VecRestoreArray(xx,&x);CHKERRQ(ierr); 2550 ierr = VecRestoreArray(bb,&b);CHKERRQ(ierr); 2551 ierr = VecScatterEnd(mat->sMvctx,mat->slvec0,mat->slvec1,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 2552 2553 /* upper triangular part: bb1 = bb1 - B*x */ 2554 ierr = (*mat->B->ops->multadd)(mat->B,mat->slvec1b,mat->slvec1a,bb1);CHKERRQ(ierr); 2555 2556 /* local diagonal sweep */ 2557 ierr = (*mat->A->ops->sor)(mat->A,bb1,omega,SOR_SYMMETRIC_SWEEP,fshift,lits,lits,xx);CHKERRQ(ierr); 2558 } 2559 ierr = VecDestroy(bb1);CHKERRQ(ierr); 2560 } else if ((flag & SOR_LOCAL_FORWARD_SWEEP) && (its == 1) && (flag & SOR_ZERO_INITIAL_GUESS)){ 2561 ierr = (*mat->A->ops->sor)(mat->A,bb,omega,flag,fshift,lits,1,xx);CHKERRQ(ierr); 2562 } else if ((flag & SOR_LOCAL_BACKWARD_SWEEP) && (its == 1) && (flag & SOR_ZERO_INITIAL_GUESS)){ 2563 ierr = (*mat->A->ops->sor)(mat->A,bb,omega,flag,fshift,lits,1,xx);CHKERRQ(ierr); 2564 } else if (flag & SOR_EISENSTAT) { 2565 Vec xx1; 2566 PetscTruth hasop; 2567 const PetscScalar *diag; 2568 PetscScalar *sl,scale = (omega - 2.0)/omega; 2569 PetscInt i,n; 2570 2571 if (!mat->xx1) { 2572 ierr = VecDuplicate(bb,&mat->xx1);CHKERRQ(ierr); 2573 ierr = VecDuplicate(bb,&mat->bb1);CHKERRQ(ierr); 2574 } 2575 xx1 = mat->xx1; 2576 bb1 = mat->bb1; 2577 2578 ierr = (*mat->A->ops->sor)(mat->A,bb,omega,(MatSORType)(SOR_ZERO_INITIAL_GUESS | SOR_LOCAL_BACKWARD_SWEEP),fshift,lits,1,xx);CHKERRQ(ierr); 2579 2580 if (!mat->diag) { 2581 /* this is wrong for same matrix with new nonzero values */ 2582 ierr = MatGetVecs(matin,&mat->diag,PETSC_NULL);CHKERRQ(ierr); 2583 ierr = MatGetDiagonal(matin,mat->diag);CHKERRQ(ierr); 2584 } 2585 ierr = MatHasOperation(matin,MATOP_MULT_DIAGONAL_BLOCK,&hasop);CHKERRQ(ierr); 2586 2587 if (hasop) { 2588 ierr = MatMultDiagonalBlock(matin,xx,bb1);CHKERRQ(ierr); 2589 ierr = VecAYPX(mat->slvec1a,scale,bb);CHKERRQ(ierr); 2590 } else { 2591 /* 2592 These two lines are replaced by code that may be a bit faster for a good compiler 2593 ierr = VecPointwiseMult(mat->slvec1a,mat->diag,xx);CHKERRQ(ierr); 2594 ierr = VecAYPX(mat->slvec1a,scale,bb);CHKERRQ(ierr); 2595 */ 2596 ierr = VecGetArray(mat->slvec1a,&sl);CHKERRQ(ierr); 2597 ierr = VecGetArray(mat->diag,(PetscScalar**)&diag);CHKERRQ(ierr); 2598 ierr = VecGetArray(bb,&b);CHKERRQ(ierr); 2599 ierr = VecGetArray(xx,&x);CHKERRQ(ierr); 2600 ierr = VecGetLocalSize(xx,&n);CHKERRQ(ierr); 2601 if (omega == 1.0) { 2602 for (i=0; i<n; i++) { 2603 sl[i] = b[i] - diag[i]*x[i]; 2604 } 2605 ierr = PetscLogFlops(2.0*n);CHKERRQ(ierr); 2606 } else { 2607 for (i=0; i<n; i++) { 2608 sl[i] = b[i] + scale*diag[i]*x[i]; 2609 } 2610 ierr = PetscLogFlops(3.0*n);CHKERRQ(ierr); 2611 } 2612 ierr = VecRestoreArray(mat->slvec1a,&sl);CHKERRQ(ierr); 2613 ierr = VecRestoreArray(mat->diag,(PetscScalar**)&diag);CHKERRQ(ierr); 2614 ierr = VecRestoreArray(bb,&b);CHKERRQ(ierr); 2615 ierr = VecRestoreArray(xx,&x);CHKERRQ(ierr); 2616 } 2617 2618 /* multiply off-diagonal portion of matrix */ 2619 ierr = VecSet(mat->slvec1b,0.0);CHKERRQ(ierr); 2620 ierr = (*mat->B->ops->multtranspose)(mat->B,xx,mat->slvec0b);CHKERRQ(ierr); 2621 ierr = VecGetArray(mat->slvec0,&from);CHKERRQ(ierr); 2622 ierr = VecGetArray(xx,&x);CHKERRQ(ierr); 2623 ierr = PetscMemcpy(from,x,bs*mbs*sizeof(MatScalar));CHKERRQ(ierr); 2624 ierr = VecRestoreArray(mat->slvec0,&from);CHKERRQ(ierr); 2625 ierr = VecRestoreArray(xx,&x);CHKERRQ(ierr); 2626 ierr = VecScatterBegin(mat->sMvctx,mat->slvec0,mat->slvec1,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 2627 ierr = VecScatterEnd(mat->sMvctx,mat->slvec0,mat->slvec1,ADD_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 2628 ierr = (*mat->B->ops->multadd)(mat->B,mat->slvec1b,mat->slvec1a,mat->slvec1a);CHKERRQ(ierr); 2629 2630 /* local sweep */ 2631 ierr = (*mat->A->ops->sor)(mat->A,mat->slvec1a,omega,(MatSORType)(SOR_ZERO_INITIAL_GUESS | SOR_LOCAL_FORWARD_SWEEP),fshift,lits,1,xx1);CHKERRQ(ierr); 2632 ierr = VecAXPY(xx,1.0,xx1);CHKERRQ(ierr); 2633 } else { 2634 SETERRQ(PETSC_ERR_SUP,"MatSORType is not supported for SBAIJ matrix format"); 2635 } 2636 PetscFunctionReturn(0); 2637 } 2638 2639 #undef __FUNCT__ 2640 #define __FUNCT__ "MatSOR_MPISBAIJ_2comm" 2641 PetscErrorCode MatSOR_MPISBAIJ_2comm(Mat matin,Vec bb,PetscReal omega,MatSORType flag,PetscReal fshift,PetscInt its,PetscInt lits,Vec xx) 2642 { 2643 Mat_MPISBAIJ *mat = (Mat_MPISBAIJ*)matin->data; 2644 PetscErrorCode ierr; 2645 Vec lvec1,bb1; 2646 2647 PetscFunctionBegin; 2648 if (its <= 0 || lits <= 0) SETERRQ2(PETSC_ERR_ARG_WRONG,"Relaxation requires global its %D and local its %D both positive",its,lits); 2649 if (matin->rmap->bs > 1) SETERRQ(PETSC_ERR_SUP,"SSOR for block size > 1 is not yet implemented"); 2650 2651 if ((flag & SOR_LOCAL_SYMMETRIC_SWEEP) == SOR_LOCAL_SYMMETRIC_SWEEP){ 2652 if ( flag & SOR_ZERO_INITIAL_GUESS ) { 2653 ierr = (*mat->A->ops->sor)(mat->A,bb,omega,flag,fshift,lits,lits,xx);CHKERRQ(ierr); 2654 its--; 2655 } 2656 2657 ierr = VecDuplicate(mat->lvec,&lvec1);CHKERRQ(ierr); 2658 ierr = VecDuplicate(bb,&bb1);CHKERRQ(ierr); 2659 while (its--){ 2660 ierr = VecScatterBegin(mat->Mvctx,xx,mat->lvec,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 2661 2662 /* lower diagonal part: bb1 = bb - B^T*xx */ 2663 ierr = (*mat->B->ops->multtranspose)(mat->B,xx,lvec1);CHKERRQ(ierr); 2664 ierr = VecScale(lvec1,-1.0);CHKERRQ(ierr); 2665 2666 ierr = VecScatterEnd(mat->Mvctx,xx,mat->lvec,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 2667 ierr = VecCopy(bb,bb1);CHKERRQ(ierr); 2668 ierr = VecScatterBegin(mat->Mvctx,lvec1,bb1,ADD_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 2669 2670 /* upper diagonal part: bb1 = bb1 - B*x */ 2671 ierr = VecScale(mat->lvec,-1.0);CHKERRQ(ierr); 2672 ierr = (*mat->B->ops->multadd)(mat->B,mat->lvec,bb1,bb1);CHKERRQ(ierr); 2673 2674 ierr = VecScatterEnd(mat->Mvctx,lvec1,bb1,ADD_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 2675 2676 /* diagonal sweep */ 2677 ierr = (*mat->A->ops->sor)(mat->A,bb1,omega,SOR_SYMMETRIC_SWEEP,fshift,lits,lits,xx);CHKERRQ(ierr); 2678 } 2679 ierr = VecDestroy(lvec1);CHKERRQ(ierr); 2680 ierr = VecDestroy(bb1);CHKERRQ(ierr); 2681 } else { 2682 SETERRQ(PETSC_ERR_SUP,"MatSORType is not supported for SBAIJ matrix format"); 2683 } 2684 PetscFunctionReturn(0); 2685 } 2686 2687