1 2 /* 3 Basic functions for basic parallel dense matrices. 4 */ 5 6 7 #include <../src/mat/impls/dense/mpi/mpidense.h> /*I "petscmat.h" I*/ 8 #include <../src/mat/impls/aij/mpi/mpiaij.h> 9 10 #undef __FUNCT__ 11 #define __FUNCT__ "MatDenseGetLocalMatrix" 12 /*@ 13 14 MatDenseGetLocalMatrix - For a MATMPIDENSE or MATSEQDENSE matrix returns the sequential 15 matrix that represents the operator. For sequential matrices it returns itself. 16 17 Input Parameter: 18 . A - the Seq or MPI dense matrix 19 20 Output Parameter: 21 . B - the inner matrix 22 23 Level: intermediate 24 25 @*/ 26 PetscErrorCode MatDenseGetLocalMatrix(Mat A,Mat *B) 27 { 28 Mat_MPIDense *mat = (Mat_MPIDense*)A->data; 29 PetscErrorCode ierr; 30 PetscBool flg; 31 32 PetscFunctionBegin; 33 ierr = PetscObjectTypeCompare((PetscObject)A,MATMPIDENSE,&flg);CHKERRQ(ierr); 34 if (flg) *B = mat->A; 35 else *B = A; 36 PetscFunctionReturn(0); 37 } 38 39 #undef __FUNCT__ 40 #define __FUNCT__ "MatGetRow_MPIDense" 41 PetscErrorCode MatGetRow_MPIDense(Mat A,PetscInt row,PetscInt *nz,PetscInt **idx,PetscScalar **v) 42 { 43 Mat_MPIDense *mat = (Mat_MPIDense*)A->data; 44 PetscErrorCode ierr; 45 PetscInt lrow,rstart = A->rmap->rstart,rend = A->rmap->rend; 46 47 PetscFunctionBegin; 48 if (row < rstart || row >= rend) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP,"only local rows"); 49 lrow = row - rstart; 50 ierr = MatGetRow(mat->A,lrow,nz,(const PetscInt**)idx,(const PetscScalar**)v);CHKERRQ(ierr); 51 PetscFunctionReturn(0); 52 } 53 54 #undef __FUNCT__ 55 #define __FUNCT__ "MatRestoreRow_MPIDense" 56 PetscErrorCode MatRestoreRow_MPIDense(Mat mat,PetscInt row,PetscInt *nz,PetscInt **idx,PetscScalar **v) 57 { 58 PetscErrorCode ierr; 59 60 PetscFunctionBegin; 61 if (idx) {ierr = PetscFree(*idx);CHKERRQ(ierr);} 62 if (v) {ierr = PetscFree(*v);CHKERRQ(ierr);} 63 PetscFunctionReturn(0); 64 } 65 66 #undef __FUNCT__ 67 #define __FUNCT__ "MatGetDiagonalBlock_MPIDense" 68 PetscErrorCode MatGetDiagonalBlock_MPIDense(Mat A,Mat *a) 69 { 70 Mat_MPIDense *mdn = (Mat_MPIDense*)A->data; 71 PetscErrorCode ierr; 72 PetscInt m = A->rmap->n,rstart = A->rmap->rstart; 73 PetscScalar *array; 74 MPI_Comm comm; 75 Mat B; 76 77 PetscFunctionBegin; 78 if (A->rmap->N != A->cmap->N) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP,"Only square matrices supported."); 79 80 ierr = PetscObjectQuery((PetscObject)A,"DiagonalBlock",(PetscObject*)&B);CHKERRQ(ierr); 81 if (!B) { 82 ierr = PetscObjectGetComm((PetscObject)(mdn->A),&comm);CHKERRQ(ierr); 83 ierr = MatCreate(comm,&B);CHKERRQ(ierr); 84 ierr = MatSetSizes(B,m,m,m,m);CHKERRQ(ierr); 85 ierr = MatSetType(B,((PetscObject)mdn->A)->type_name);CHKERRQ(ierr); 86 ierr = MatDenseGetArray(mdn->A,&array);CHKERRQ(ierr); 87 ierr = MatSeqDenseSetPreallocation(B,array+m*rstart);CHKERRQ(ierr); 88 ierr = MatDenseRestoreArray(mdn->A,&array);CHKERRQ(ierr); 89 ierr = MatAssemblyBegin(B,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 90 ierr = MatAssemblyEnd(B,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 91 ierr = PetscObjectCompose((PetscObject)A,"DiagonalBlock",(PetscObject)B);CHKERRQ(ierr); 92 *a = B; 93 ierr = MatDestroy(&B);CHKERRQ(ierr); 94 } else *a = B; 95 PetscFunctionReturn(0); 96 } 97 98 #undef __FUNCT__ 99 #define __FUNCT__ "MatSetValues_MPIDense" 100 PetscErrorCode MatSetValues_MPIDense(Mat mat,PetscInt m,const PetscInt idxm[],PetscInt n,const PetscInt idxn[],const PetscScalar v[],InsertMode addv) 101 { 102 Mat_MPIDense *A = (Mat_MPIDense*)mat->data; 103 PetscErrorCode ierr; 104 PetscInt i,j,rstart = mat->rmap->rstart,rend = mat->rmap->rend,row; 105 PetscBool roworiented = A->roworiented; 106 107 PetscFunctionBegin; 108 for (i=0; i<m; i++) { 109 if (idxm[i] < 0) continue; 110 if (idxm[i] >= mat->rmap->N) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Row too large"); 111 if (idxm[i] >= rstart && idxm[i] < rend) { 112 row = idxm[i] - rstart; 113 if (roworiented) { 114 ierr = MatSetValues(A->A,1,&row,n,idxn,v+i*n,addv);CHKERRQ(ierr); 115 } else { 116 for (j=0; j<n; j++) { 117 if (idxn[j] < 0) continue; 118 if (idxn[j] >= mat->cmap->N) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Column too large"); 119 ierr = MatSetValues(A->A,1,&row,1,&idxn[j],v+i+j*m,addv);CHKERRQ(ierr); 120 } 121 } 122 } else if (!A->donotstash) { 123 mat->assembled = PETSC_FALSE; 124 if (roworiented) { 125 ierr = MatStashValuesRow_Private(&mat->stash,idxm[i],n,idxn,v+i*n,PETSC_FALSE);CHKERRQ(ierr); 126 } else { 127 ierr = MatStashValuesCol_Private(&mat->stash,idxm[i],n,idxn,v+i,m,PETSC_FALSE);CHKERRQ(ierr); 128 } 129 } 130 } 131 PetscFunctionReturn(0); 132 } 133 134 #undef __FUNCT__ 135 #define __FUNCT__ "MatGetValues_MPIDense" 136 PetscErrorCode MatGetValues_MPIDense(Mat mat,PetscInt m,const PetscInt idxm[],PetscInt n,const PetscInt idxn[],PetscScalar v[]) 137 { 138 Mat_MPIDense *mdn = (Mat_MPIDense*)mat->data; 139 PetscErrorCode ierr; 140 PetscInt i,j,rstart = mat->rmap->rstart,rend = mat->rmap->rend,row; 141 142 PetscFunctionBegin; 143 for (i=0; i<m; i++) { 144 if (idxm[i] < 0) continue; /* SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Negative row"); */ 145 if (idxm[i] >= mat->rmap->N) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Row too large"); 146 if (idxm[i] >= rstart && idxm[i] < rend) { 147 row = idxm[i] - rstart; 148 for (j=0; j<n; j++) { 149 if (idxn[j] < 0) continue; /* SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Negative column"); */ 150 if (idxn[j] >= mat->cmap->N) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Column too large"); 151 ierr = MatGetValues(mdn->A,1,&row,1,&idxn[j],v+i*n+j);CHKERRQ(ierr); 152 } 153 } else SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP,"Only local values currently supported"); 154 } 155 PetscFunctionReturn(0); 156 } 157 158 #undef __FUNCT__ 159 #define __FUNCT__ "MatDenseGetArray_MPIDense" 160 PetscErrorCode MatDenseGetArray_MPIDense(Mat A,PetscScalar *array[]) 161 { 162 Mat_MPIDense *a = (Mat_MPIDense*)A->data; 163 PetscErrorCode ierr; 164 165 PetscFunctionBegin; 166 ierr = MatDenseGetArray(a->A,array);CHKERRQ(ierr); 167 PetscFunctionReturn(0); 168 } 169 170 #undef __FUNCT__ 171 #define __FUNCT__ "MatGetSubMatrix_MPIDense" 172 static PetscErrorCode MatGetSubMatrix_MPIDense(Mat A,IS isrow,IS iscol,MatReuse scall,Mat *B) 173 { 174 Mat_MPIDense *mat = (Mat_MPIDense*)A->data,*newmatd; 175 Mat_SeqDense *lmat = (Mat_SeqDense*)mat->A->data; 176 PetscErrorCode ierr; 177 PetscInt i,j,rstart,rend,nrows,ncols,Ncols,nlrows,nlcols; 178 const PetscInt *irow,*icol; 179 PetscScalar *av,*bv,*v = lmat->v; 180 Mat newmat; 181 IS iscol_local; 182 183 PetscFunctionBegin; 184 ierr = ISAllGather(iscol,&iscol_local);CHKERRQ(ierr); 185 ierr = ISGetIndices(isrow,&irow);CHKERRQ(ierr); 186 ierr = ISGetIndices(iscol_local,&icol);CHKERRQ(ierr); 187 ierr = ISGetLocalSize(isrow,&nrows);CHKERRQ(ierr); 188 ierr = ISGetLocalSize(iscol,&ncols);CHKERRQ(ierr); 189 ierr = ISGetSize(iscol,&Ncols);CHKERRQ(ierr); /* global number of columns, size of iscol_local */ 190 191 /* No parallel redistribution currently supported! Should really check each index set 192 to comfirm that it is OK. ... Currently supports only submatrix same partitioning as 193 original matrix! */ 194 195 ierr = MatGetLocalSize(A,&nlrows,&nlcols);CHKERRQ(ierr); 196 ierr = MatGetOwnershipRange(A,&rstart,&rend);CHKERRQ(ierr); 197 198 /* Check submatrix call */ 199 if (scall == MAT_REUSE_MATRIX) { 200 /* SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_SIZ,"Reused submatrix wrong size"); */ 201 /* Really need to test rows and column sizes! */ 202 newmat = *B; 203 } else { 204 /* Create and fill new matrix */ 205 ierr = MatCreate(PetscObjectComm((PetscObject)A),&newmat);CHKERRQ(ierr); 206 ierr = MatSetSizes(newmat,nrows,ncols,PETSC_DECIDE,Ncols);CHKERRQ(ierr); 207 ierr = MatSetType(newmat,((PetscObject)A)->type_name);CHKERRQ(ierr); 208 ierr = MatMPIDenseSetPreallocation(newmat,NULL);CHKERRQ(ierr); 209 } 210 211 /* Now extract the data pointers and do the copy, column at a time */ 212 newmatd = (Mat_MPIDense*)newmat->data; 213 bv = ((Mat_SeqDense*)newmatd->A->data)->v; 214 215 for (i=0; i<Ncols; i++) { 216 av = v + ((Mat_SeqDense*)mat->A->data)->lda*icol[i]; 217 for (j=0; j<nrows; j++) { 218 *bv++ = av[irow[j] - rstart]; 219 } 220 } 221 222 /* Assemble the matrices so that the correct flags are set */ 223 ierr = MatAssemblyBegin(newmat,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 224 ierr = MatAssemblyEnd(newmat,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 225 226 /* Free work space */ 227 ierr = ISRestoreIndices(isrow,&irow);CHKERRQ(ierr); 228 ierr = ISRestoreIndices(iscol_local,&icol);CHKERRQ(ierr); 229 ierr = ISDestroy(&iscol_local);CHKERRQ(ierr); 230 *B = newmat; 231 PetscFunctionReturn(0); 232 } 233 234 #undef __FUNCT__ 235 #define __FUNCT__ "MatDenseRestoreArray_MPIDense" 236 PetscErrorCode MatDenseRestoreArray_MPIDense(Mat A,PetscScalar *array[]) 237 { 238 Mat_MPIDense *a = (Mat_MPIDense*)A->data; 239 PetscErrorCode ierr; 240 241 PetscFunctionBegin; 242 ierr = MatDenseRestoreArray(a->A,array);CHKERRQ(ierr); 243 PetscFunctionReturn(0); 244 } 245 246 #undef __FUNCT__ 247 #define __FUNCT__ "MatAssemblyBegin_MPIDense" 248 PetscErrorCode MatAssemblyBegin_MPIDense(Mat mat,MatAssemblyType mode) 249 { 250 Mat_MPIDense *mdn = (Mat_MPIDense*)mat->data; 251 MPI_Comm comm; 252 PetscErrorCode ierr; 253 PetscInt nstash,reallocs; 254 InsertMode addv; 255 256 PetscFunctionBegin; 257 ierr = PetscObjectGetComm((PetscObject)mat,&comm);CHKERRQ(ierr); 258 /* make sure all processors are either in INSERTMODE or ADDMODE */ 259 ierr = MPI_Allreduce((PetscEnum*)&mat->insertmode,(PetscEnum*)&addv,1,MPIU_ENUM,MPI_BOR,comm);CHKERRQ(ierr); 260 if (addv == (ADD_VALUES|INSERT_VALUES)) SETERRQ(PetscObjectComm((PetscObject)mat),PETSC_ERR_ARG_WRONGSTATE,"Cannot mix adds/inserts on different procs"); 261 mat->insertmode = addv; /* in case this processor had no cache */ 262 263 ierr = MatStashScatterBegin_Private(mat,&mat->stash,mat->rmap->range);CHKERRQ(ierr); 264 ierr = MatStashGetInfo_Private(&mat->stash,&nstash,&reallocs);CHKERRQ(ierr); 265 ierr = PetscInfo2(mdn->A,"Stash has %D entries, uses %D mallocs.\n",nstash,reallocs);CHKERRQ(ierr); 266 PetscFunctionReturn(0); 267 } 268 269 #undef __FUNCT__ 270 #define __FUNCT__ "MatAssemblyEnd_MPIDense" 271 PetscErrorCode MatAssemblyEnd_MPIDense(Mat mat,MatAssemblyType mode) 272 { 273 Mat_MPIDense *mdn=(Mat_MPIDense*)mat->data; 274 PetscErrorCode ierr; 275 PetscInt i,*row,*col,flg,j,rstart,ncols; 276 PetscMPIInt n; 277 PetscScalar *val; 278 InsertMode addv=mat->insertmode; 279 280 PetscFunctionBegin; 281 /* wait on receives */ 282 while (1) { 283 ierr = MatStashScatterGetMesg_Private(&mat->stash,&n,&row,&col,&val,&flg);CHKERRQ(ierr); 284 if (!flg) break; 285 286 for (i=0; i<n;) { 287 /* Now identify the consecutive vals belonging to the same row */ 288 for (j=i,rstart=row[j]; j<n; j++) { 289 if (row[j] != rstart) break; 290 } 291 if (j < n) ncols = j-i; 292 else ncols = n-i; 293 /* Now assemble all these values with a single function call */ 294 ierr = MatSetValues_MPIDense(mat,1,row+i,ncols,col+i,val+i,addv);CHKERRQ(ierr); 295 i = j; 296 } 297 } 298 ierr = MatStashScatterEnd_Private(&mat->stash);CHKERRQ(ierr); 299 300 ierr = MatAssemblyBegin(mdn->A,mode);CHKERRQ(ierr); 301 ierr = MatAssemblyEnd(mdn->A,mode);CHKERRQ(ierr); 302 303 if (!mat->was_assembled && mode == MAT_FINAL_ASSEMBLY) { 304 ierr = MatSetUpMultiply_MPIDense(mat);CHKERRQ(ierr); 305 } 306 PetscFunctionReturn(0); 307 } 308 309 #undef __FUNCT__ 310 #define __FUNCT__ "MatZeroEntries_MPIDense" 311 PetscErrorCode MatZeroEntries_MPIDense(Mat A) 312 { 313 PetscErrorCode ierr; 314 Mat_MPIDense *l = (Mat_MPIDense*)A->data; 315 316 PetscFunctionBegin; 317 ierr = MatZeroEntries(l->A);CHKERRQ(ierr); 318 PetscFunctionReturn(0); 319 } 320 321 /* the code does not do the diagonal entries correctly unless the 322 matrix is square and the column and row owerships are identical. 323 This is a BUG. The only way to fix it seems to be to access 324 mdn->A and mdn->B directly and not through the MatZeroRows() 325 routine. 326 */ 327 #undef __FUNCT__ 328 #define __FUNCT__ "MatZeroRows_MPIDense" 329 PetscErrorCode MatZeroRows_MPIDense(Mat A,PetscInt N,const PetscInt rows[],PetscScalar diag,Vec x,Vec b) 330 { 331 Mat_MPIDense *l = (Mat_MPIDense*)A->data; 332 PetscErrorCode ierr; 333 PetscInt i,*owners = A->rmap->range; 334 PetscInt *sizes,j,idx,nsends; 335 PetscInt nmax,*svalues,*starts,*owner,nrecvs; 336 PetscInt *rvalues,tag = ((PetscObject)A)->tag,count,base,slen,*source; 337 PetscInt *lens,*lrows,*values; 338 PetscMPIInt n,imdex,rank = l->rank,size = l->size; 339 MPI_Comm comm; 340 MPI_Request *send_waits,*recv_waits; 341 MPI_Status recv_status,*send_status; 342 PetscBool found; 343 const PetscScalar *xx; 344 PetscScalar *bb; 345 346 PetscFunctionBegin; 347 ierr = PetscObjectGetComm((PetscObject)A,&comm);CHKERRQ(ierr); 348 if (A->rmap->N != A->cmap->N) SETERRQ(comm,PETSC_ERR_SUP,"Only handles square matrices"); 349 if (A->rmap->n != A->cmap->n) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP,"Only handles matrices with identical column and row ownership"); 350 /* first count number of contributors to each processor */ 351 ierr = PetscCalloc1(2*size,&sizes);CHKERRQ(ierr); 352 ierr = PetscMalloc1(N+1,&owner);CHKERRQ(ierr); /* see note*/ 353 for (i=0; i<N; i++) { 354 idx = rows[i]; 355 found = PETSC_FALSE; 356 for (j=0; j<size; j++) { 357 if (idx >= owners[j] && idx < owners[j+1]) { 358 sizes[2*j]++; sizes[2*j+1] = 1; owner[i] = j; found = PETSC_TRUE; break; 359 } 360 } 361 if (!found) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Index out of range"); 362 } 363 nsends = 0; 364 for (i=0; i<size; i++) nsends += sizes[2*i+1]; 365 366 /* inform other processors of number of messages and max length*/ 367 ierr = PetscMaxSum(comm,sizes,&nmax,&nrecvs);CHKERRQ(ierr); 368 369 /* post receives: */ 370 ierr = PetscMalloc1((nrecvs+1)*(nmax+1),&rvalues);CHKERRQ(ierr); 371 ierr = PetscMalloc1((nrecvs+1),&recv_waits);CHKERRQ(ierr); 372 for (i=0; i<nrecvs; i++) { 373 ierr = MPI_Irecv(rvalues+nmax*i,nmax,MPIU_INT,MPI_ANY_SOURCE,tag,comm,recv_waits+i);CHKERRQ(ierr); 374 } 375 376 /* do sends: 377 1) starts[i] gives the starting index in svalues for stuff going to 378 the ith processor 379 */ 380 ierr = PetscMalloc1((N+1),&svalues);CHKERRQ(ierr); 381 ierr = PetscMalloc1((nsends+1),&send_waits);CHKERRQ(ierr); 382 ierr = PetscMalloc1((size+1),&starts);CHKERRQ(ierr); 383 384 starts[0] = 0; 385 for (i=1; i<size; i++) starts[i] = starts[i-1] + sizes[2*i-2]; 386 for (i=0; i<N; i++) svalues[starts[owner[i]]++] = rows[i]; 387 388 starts[0] = 0; 389 for (i=1; i<size+1; i++) starts[i] = starts[i-1] + sizes[2*i-2]; 390 count = 0; 391 for (i=0; i<size; i++) { 392 if (sizes[2*i+1]) { 393 ierr = MPI_Isend(svalues+starts[i],sizes[2*i],MPIU_INT,i,tag,comm,send_waits+count++);CHKERRQ(ierr); 394 } 395 } 396 ierr = PetscFree(starts);CHKERRQ(ierr); 397 398 base = owners[rank]; 399 400 /* wait on receives */ 401 ierr = PetscMalloc2(nrecvs,&lens,nrecvs,&source);CHKERRQ(ierr); 402 count = nrecvs; 403 slen = 0; 404 while (count) { 405 ierr = MPI_Waitany(nrecvs,recv_waits,&imdex,&recv_status);CHKERRQ(ierr); 406 /* unpack receives into our local space */ 407 ierr = MPI_Get_count(&recv_status,MPIU_INT,&n);CHKERRQ(ierr); 408 409 source[imdex] = recv_status.MPI_SOURCE; 410 lens[imdex] = n; 411 slen += n; 412 count--; 413 } 414 ierr = PetscFree(recv_waits);CHKERRQ(ierr); 415 416 /* move the data into the send scatter */ 417 ierr = PetscMalloc1((slen+1),&lrows);CHKERRQ(ierr); 418 count = 0; 419 for (i=0; i<nrecvs; i++) { 420 values = rvalues + i*nmax; 421 for (j=0; j<lens[i]; j++) { 422 lrows[count++] = values[j] - base; 423 } 424 } 425 ierr = PetscFree(rvalues);CHKERRQ(ierr); 426 ierr = PetscFree2(lens,source);CHKERRQ(ierr); 427 ierr = PetscFree(owner);CHKERRQ(ierr); 428 ierr = PetscFree(sizes);CHKERRQ(ierr); 429 430 /* fix right hand side if needed */ 431 if (x && b) { 432 ierr = VecGetArrayRead(x,&xx);CHKERRQ(ierr); 433 ierr = VecGetArray(b,&bb);CHKERRQ(ierr); 434 for (i=0; i<slen; i++) { 435 bb[lrows[i]] = diag*xx[lrows[i]]; 436 } 437 ierr = VecRestoreArrayRead(x,&xx);CHKERRQ(ierr); 438 ierr = VecRestoreArray(b,&bb);CHKERRQ(ierr); 439 } 440 441 /* actually zap the local rows */ 442 ierr = MatZeroRows(l->A,slen,lrows,0.0,0,0);CHKERRQ(ierr); 443 if (diag != 0.0) { 444 Mat_SeqDense *ll = (Mat_SeqDense*)l->A->data; 445 PetscInt m = ll->lda, i; 446 447 for (i=0; i<slen; i++) { 448 ll->v[lrows[i] + m*(A->cmap->rstart + lrows[i])] = diag; 449 } 450 } 451 ierr = PetscFree(lrows);CHKERRQ(ierr); 452 453 /* wait on sends */ 454 if (nsends) { 455 ierr = PetscMalloc1(nsends,&send_status);CHKERRQ(ierr); 456 ierr = MPI_Waitall(nsends,send_waits,send_status);CHKERRQ(ierr); 457 ierr = PetscFree(send_status);CHKERRQ(ierr); 458 } 459 ierr = PetscFree(send_waits);CHKERRQ(ierr); 460 ierr = PetscFree(svalues);CHKERRQ(ierr); 461 PetscFunctionReturn(0); 462 } 463 464 #undef __FUNCT__ 465 #define __FUNCT__ "MatMult_MPIDense" 466 PetscErrorCode MatMult_MPIDense(Mat mat,Vec xx,Vec yy) 467 { 468 Mat_MPIDense *mdn = (Mat_MPIDense*)mat->data; 469 PetscErrorCode ierr; 470 471 PetscFunctionBegin; 472 ierr = VecScatterBegin(mdn->Mvctx,xx,mdn->lvec,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 473 ierr = VecScatterEnd(mdn->Mvctx,xx,mdn->lvec,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 474 ierr = MatMult_SeqDense(mdn->A,mdn->lvec,yy);CHKERRQ(ierr); 475 PetscFunctionReturn(0); 476 } 477 478 #undef __FUNCT__ 479 #define __FUNCT__ "MatMultAdd_MPIDense" 480 PetscErrorCode MatMultAdd_MPIDense(Mat mat,Vec xx,Vec yy,Vec zz) 481 { 482 Mat_MPIDense *mdn = (Mat_MPIDense*)mat->data; 483 PetscErrorCode ierr; 484 485 PetscFunctionBegin; 486 ierr = VecScatterBegin(mdn->Mvctx,xx,mdn->lvec,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 487 ierr = VecScatterEnd(mdn->Mvctx,xx,mdn->lvec,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 488 ierr = MatMultAdd_SeqDense(mdn->A,mdn->lvec,yy,zz);CHKERRQ(ierr); 489 PetscFunctionReturn(0); 490 } 491 492 #undef __FUNCT__ 493 #define __FUNCT__ "MatMultTranspose_MPIDense" 494 PetscErrorCode MatMultTranspose_MPIDense(Mat A,Vec xx,Vec yy) 495 { 496 Mat_MPIDense *a = (Mat_MPIDense*)A->data; 497 PetscErrorCode ierr; 498 PetscScalar zero = 0.0; 499 500 PetscFunctionBegin; 501 ierr = VecSet(yy,zero);CHKERRQ(ierr); 502 ierr = MatMultTranspose_SeqDense(a->A,xx,a->lvec);CHKERRQ(ierr); 503 ierr = VecScatterBegin(a->Mvctx,a->lvec,yy,ADD_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 504 ierr = VecScatterEnd(a->Mvctx,a->lvec,yy,ADD_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 505 PetscFunctionReturn(0); 506 } 507 508 #undef __FUNCT__ 509 #define __FUNCT__ "MatMultTransposeAdd_MPIDense" 510 PetscErrorCode MatMultTransposeAdd_MPIDense(Mat A,Vec xx,Vec yy,Vec zz) 511 { 512 Mat_MPIDense *a = (Mat_MPIDense*)A->data; 513 PetscErrorCode ierr; 514 515 PetscFunctionBegin; 516 ierr = VecCopy(yy,zz);CHKERRQ(ierr); 517 ierr = MatMultTranspose_SeqDense(a->A,xx,a->lvec);CHKERRQ(ierr); 518 ierr = VecScatterBegin(a->Mvctx,a->lvec,zz,ADD_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 519 ierr = VecScatterEnd(a->Mvctx,a->lvec,zz,ADD_VALUES,SCATTER_REVERSE);CHKERRQ(ierr); 520 PetscFunctionReturn(0); 521 } 522 523 #undef __FUNCT__ 524 #define __FUNCT__ "MatGetDiagonal_MPIDense" 525 PetscErrorCode MatGetDiagonal_MPIDense(Mat A,Vec v) 526 { 527 Mat_MPIDense *a = (Mat_MPIDense*)A->data; 528 Mat_SeqDense *aloc = (Mat_SeqDense*)a->A->data; 529 PetscErrorCode ierr; 530 PetscInt len,i,n,m = A->rmap->n,radd; 531 PetscScalar *x,zero = 0.0; 532 533 PetscFunctionBegin; 534 ierr = VecSet(v,zero);CHKERRQ(ierr); 535 ierr = VecGetArray(v,&x);CHKERRQ(ierr); 536 ierr = VecGetSize(v,&n);CHKERRQ(ierr); 537 if (n != A->rmap->N) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_SIZ,"Nonconforming mat and vec"); 538 len = PetscMin(a->A->rmap->n,a->A->cmap->n); 539 radd = A->rmap->rstart*m; 540 for (i=0; i<len; i++) { 541 x[i] = aloc->v[radd + i*m + i]; 542 } 543 ierr = VecRestoreArray(v,&x);CHKERRQ(ierr); 544 PetscFunctionReturn(0); 545 } 546 547 #undef __FUNCT__ 548 #define __FUNCT__ "MatDestroy_MPIDense" 549 PetscErrorCode MatDestroy_MPIDense(Mat mat) 550 { 551 Mat_MPIDense *mdn = (Mat_MPIDense*)mat->data; 552 PetscErrorCode ierr; 553 554 PetscFunctionBegin; 555 #if defined(PETSC_USE_LOG) 556 PetscLogObjectState((PetscObject)mat,"Rows=%D, Cols=%D",mat->rmap->N,mat->cmap->N); 557 #endif 558 ierr = MatStashDestroy_Private(&mat->stash);CHKERRQ(ierr); 559 ierr = MatDestroy(&mdn->A);CHKERRQ(ierr); 560 ierr = VecDestroy(&mdn->lvec);CHKERRQ(ierr); 561 ierr = VecScatterDestroy(&mdn->Mvctx);CHKERRQ(ierr); 562 563 ierr = PetscFree(mat->data);CHKERRQ(ierr); 564 ierr = PetscObjectChangeTypeName((PetscObject)mat,0);CHKERRQ(ierr); 565 566 ierr = PetscObjectComposeFunction((PetscObject)mat,"MatDenseGetArray_C",NULL);CHKERRQ(ierr); 567 ierr = PetscObjectComposeFunction((PetscObject)mat,"MatDenseRestoreArray_C",NULL);CHKERRQ(ierr); 568 #if defined(PETSC_HAVE_ELEMENTAL) 569 ierr = PetscObjectComposeFunction((PetscObject)mat,"MatConvert_mpidense_elemental_C",NULL);CHKERRQ(ierr); 570 #endif 571 ierr = PetscObjectComposeFunction((PetscObject)mat,"MatGetDiagonalBlock_C",NULL);CHKERRQ(ierr); 572 ierr = PetscObjectComposeFunction((PetscObject)mat,"MatMPIDenseSetPreallocation_C",NULL);CHKERRQ(ierr); 573 ierr = PetscObjectComposeFunction((PetscObject)mat,"MatMatMult_mpiaij_mpidense_C",NULL);CHKERRQ(ierr); 574 ierr = PetscObjectComposeFunction((PetscObject)mat,"MatMatMultSymbolic_mpiaij_mpidense_C",NULL);CHKERRQ(ierr); 575 ierr = PetscObjectComposeFunction((PetscObject)mat,"MatMatMultNumeric_mpiaij_mpidense_C",NULL);CHKERRQ(ierr); 576 ierr = PetscObjectComposeFunction((PetscObject)mat,"MatTransposeMatMult_mpiaij_mpidense_C",NULL);CHKERRQ(ierr); 577 ierr = PetscObjectComposeFunction((PetscObject)mat,"MatTransposeMatMultSymbolic_mpiaij_mpidense_C",NULL);CHKERRQ(ierr); 578 ierr = PetscObjectComposeFunction((PetscObject)mat,"MatTransposeMatMultNumeric_mpiaij_mpidense_C",NULL);CHKERRQ(ierr); 579 PetscFunctionReturn(0); 580 } 581 582 #undef __FUNCT__ 583 #define __FUNCT__ "MatView_MPIDense_Binary" 584 static PetscErrorCode MatView_MPIDense_Binary(Mat mat,PetscViewer viewer) 585 { 586 Mat_MPIDense *mdn = (Mat_MPIDense*)mat->data; 587 PetscErrorCode ierr; 588 PetscViewerFormat format; 589 int fd; 590 PetscInt header[4],mmax,N = mat->cmap->N,i,j,m,k; 591 PetscMPIInt rank,tag = ((PetscObject)viewer)->tag,size; 592 PetscScalar *work,*v,*vv; 593 Mat_SeqDense *a = (Mat_SeqDense*)mdn->A->data; 594 595 PetscFunctionBegin; 596 if (mdn->size == 1) { 597 ierr = MatView(mdn->A,viewer);CHKERRQ(ierr); 598 } else { 599 ierr = PetscViewerBinaryGetDescriptor(viewer,&fd);CHKERRQ(ierr); 600 ierr = MPI_Comm_rank(PetscObjectComm((PetscObject)mat),&rank);CHKERRQ(ierr); 601 ierr = MPI_Comm_size(PetscObjectComm((PetscObject)mat),&size);CHKERRQ(ierr); 602 603 ierr = PetscViewerGetFormat(viewer,&format);CHKERRQ(ierr); 604 if (format == PETSC_VIEWER_NATIVE) { 605 606 if (!rank) { 607 /* store the matrix as a dense matrix */ 608 header[0] = MAT_FILE_CLASSID; 609 header[1] = mat->rmap->N; 610 header[2] = N; 611 header[3] = MATRIX_BINARY_FORMAT_DENSE; 612 ierr = PetscBinaryWrite(fd,header,4,PETSC_INT,PETSC_TRUE);CHKERRQ(ierr); 613 614 /* get largest work array needed for transposing array */ 615 mmax = mat->rmap->n; 616 for (i=1; i<size; i++) { 617 mmax = PetscMax(mmax,mat->rmap->range[i+1] - mat->rmap->range[i]); 618 } 619 ierr = PetscMalloc1(mmax*N,&work);CHKERRQ(ierr); 620 621 /* write out local array, by rows */ 622 m = mat->rmap->n; 623 v = a->v; 624 for (j=0; j<N; j++) { 625 for (i=0; i<m; i++) { 626 work[j + i*N] = *v++; 627 } 628 } 629 ierr = PetscBinaryWrite(fd,work,m*N,PETSC_SCALAR,PETSC_FALSE);CHKERRQ(ierr); 630 /* get largest work array to receive messages from other processes, excludes process zero */ 631 mmax = 0; 632 for (i=1; i<size; i++) { 633 mmax = PetscMax(mmax,mat->rmap->range[i+1] - mat->rmap->range[i]); 634 } 635 ierr = PetscMalloc1(mmax*N,&vv);CHKERRQ(ierr); 636 for (k = 1; k < size; k++) { 637 v = vv; 638 m = mat->rmap->range[k+1] - mat->rmap->range[k]; 639 ierr = MPIULong_Recv(v,m*N,MPIU_SCALAR,k,tag,PetscObjectComm((PetscObject)mat));CHKERRQ(ierr); 640 641 for (j = 0; j < N; j++) { 642 for (i = 0; i < m; i++) { 643 work[j + i*N] = *v++; 644 } 645 } 646 ierr = PetscBinaryWrite(fd,work,m*N,PETSC_SCALAR,PETSC_FALSE);CHKERRQ(ierr); 647 } 648 ierr = PetscFree(work);CHKERRQ(ierr); 649 ierr = PetscFree(vv);CHKERRQ(ierr); 650 } else { 651 ierr = MPIULong_Send(a->v,mat->rmap->n*mat->cmap->N,MPIU_SCALAR,0,tag,PetscObjectComm((PetscObject)mat));CHKERRQ(ierr); 652 } 653 } else SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP,"To store a parallel dense matrix you must first call PetscViewerSetFormat(viewer,PETSC_VIEWER_NATIVE)"); 654 } 655 PetscFunctionReturn(0); 656 } 657 658 extern PetscErrorCode MatView_SeqDense(Mat,PetscViewer); 659 #include <petscdraw.h> 660 #undef __FUNCT__ 661 #define __FUNCT__ "MatView_MPIDense_ASCIIorDraworSocket" 662 static PetscErrorCode MatView_MPIDense_ASCIIorDraworSocket(Mat mat,PetscViewer viewer) 663 { 664 Mat_MPIDense *mdn = (Mat_MPIDense*)mat->data; 665 PetscErrorCode ierr; 666 PetscMPIInt rank = mdn->rank; 667 PetscViewerType vtype; 668 PetscBool iascii,isdraw; 669 PetscViewer sviewer; 670 PetscViewerFormat format; 671 672 PetscFunctionBegin; 673 ierr = PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERASCII,&iascii);CHKERRQ(ierr); 674 ierr = PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERDRAW,&isdraw);CHKERRQ(ierr); 675 if (iascii) { 676 ierr = PetscViewerGetType(viewer,&vtype);CHKERRQ(ierr); 677 ierr = PetscViewerGetFormat(viewer,&format);CHKERRQ(ierr); 678 if (format == PETSC_VIEWER_ASCII_INFO_DETAIL) { 679 MatInfo info; 680 ierr = MatGetInfo(mat,MAT_LOCAL,&info);CHKERRQ(ierr); 681 ierr = PetscViewerASCIISynchronizedAllow(viewer,PETSC_TRUE);CHKERRQ(ierr); 682 ierr = PetscViewerASCIISynchronizedPrintf(viewer," [%d] local rows %D nz %D nz alloced %D mem %D \n",rank,mat->rmap->n,(PetscInt)info.nz_used,(PetscInt)info.nz_allocated,(PetscInt)info.memory);CHKERRQ(ierr); 683 ierr = PetscViewerFlush(viewer);CHKERRQ(ierr); 684 ierr = PetscViewerASCIISynchronizedAllow(viewer,PETSC_FALSE);CHKERRQ(ierr); 685 ierr = VecScatterView(mdn->Mvctx,viewer);CHKERRQ(ierr); 686 PetscFunctionReturn(0); 687 } else if (format == PETSC_VIEWER_ASCII_INFO) { 688 PetscFunctionReturn(0); 689 } 690 } else if (isdraw) { 691 PetscDraw draw; 692 PetscBool isnull; 693 694 ierr = PetscViewerDrawGetDraw(viewer,0,&draw);CHKERRQ(ierr); 695 ierr = PetscDrawIsNull(draw,&isnull);CHKERRQ(ierr); 696 if (isnull) PetscFunctionReturn(0); 697 } 698 699 { 700 /* assemble the entire matrix onto first processor. */ 701 Mat A; 702 PetscInt M = mat->rmap->N,N = mat->cmap->N,m,row,i,nz; 703 PetscInt *cols; 704 PetscScalar *vals; 705 706 ierr = MatCreate(PetscObjectComm((PetscObject)mat),&A);CHKERRQ(ierr); 707 if (!rank) { 708 ierr = MatSetSizes(A,M,N,M,N);CHKERRQ(ierr); 709 } else { 710 ierr = MatSetSizes(A,0,0,M,N);CHKERRQ(ierr); 711 } 712 /* Since this is a temporary matrix, MATMPIDENSE instead of ((PetscObject)A)->type_name here is probably acceptable. */ 713 ierr = MatSetType(A,MATMPIDENSE);CHKERRQ(ierr); 714 ierr = MatMPIDenseSetPreallocation(A,NULL);CHKERRQ(ierr); 715 ierr = PetscLogObjectParent((PetscObject)mat,(PetscObject)A);CHKERRQ(ierr); 716 717 /* Copy the matrix ... This isn't the most efficient means, 718 but it's quick for now */ 719 A->insertmode = INSERT_VALUES; 720 721 row = mat->rmap->rstart; 722 m = mdn->A->rmap->n; 723 for (i=0; i<m; i++) { 724 ierr = MatGetRow_MPIDense(mat,row,&nz,&cols,&vals);CHKERRQ(ierr); 725 ierr = MatSetValues_MPIDense(A,1,&row,nz,cols,vals,INSERT_VALUES);CHKERRQ(ierr); 726 ierr = MatRestoreRow_MPIDense(mat,row,&nz,&cols,&vals);CHKERRQ(ierr); 727 row++; 728 } 729 730 ierr = MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 731 ierr = MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 732 ierr = PetscViewerGetSingleton(viewer,&sviewer);CHKERRQ(ierr); 733 if (!rank) { 734 ierr = MatView_SeqDense(((Mat_MPIDense*)(A->data))->A,sviewer);CHKERRQ(ierr); 735 } 736 ierr = PetscViewerRestoreSingleton(viewer,&sviewer);CHKERRQ(ierr); 737 ierr = PetscViewerFlush(viewer);CHKERRQ(ierr); 738 ierr = MatDestroy(&A);CHKERRQ(ierr); 739 } 740 PetscFunctionReturn(0); 741 } 742 743 #undef __FUNCT__ 744 #define __FUNCT__ "MatView_MPIDense" 745 PetscErrorCode MatView_MPIDense(Mat mat,PetscViewer viewer) 746 { 747 PetscErrorCode ierr; 748 PetscBool iascii,isbinary,isdraw,issocket; 749 750 PetscFunctionBegin; 751 ierr = PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERASCII,&iascii);CHKERRQ(ierr); 752 ierr = PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERBINARY,&isbinary);CHKERRQ(ierr); 753 ierr = PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERSOCKET,&issocket);CHKERRQ(ierr); 754 ierr = PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERDRAW,&isdraw);CHKERRQ(ierr); 755 756 if (iascii || issocket || isdraw) { 757 ierr = MatView_MPIDense_ASCIIorDraworSocket(mat,viewer);CHKERRQ(ierr); 758 } else if (isbinary) { 759 ierr = MatView_MPIDense_Binary(mat,viewer);CHKERRQ(ierr); 760 } 761 PetscFunctionReturn(0); 762 } 763 764 #undef __FUNCT__ 765 #define __FUNCT__ "MatGetInfo_MPIDense" 766 PetscErrorCode MatGetInfo_MPIDense(Mat A,MatInfoType flag,MatInfo *info) 767 { 768 Mat_MPIDense *mat = (Mat_MPIDense*)A->data; 769 Mat mdn = mat->A; 770 PetscErrorCode ierr; 771 PetscReal isend[5],irecv[5]; 772 773 PetscFunctionBegin; 774 info->block_size = 1.0; 775 776 ierr = MatGetInfo(mdn,MAT_LOCAL,info);CHKERRQ(ierr); 777 778 isend[0] = info->nz_used; isend[1] = info->nz_allocated; isend[2] = info->nz_unneeded; 779 isend[3] = info->memory; isend[4] = info->mallocs; 780 if (flag == MAT_LOCAL) { 781 info->nz_used = isend[0]; 782 info->nz_allocated = isend[1]; 783 info->nz_unneeded = isend[2]; 784 info->memory = isend[3]; 785 info->mallocs = isend[4]; 786 } else if (flag == MAT_GLOBAL_MAX) { 787 ierr = MPI_Allreduce(isend,irecv,5,MPIU_REAL,MPIU_MAX,PetscObjectComm((PetscObject)A));CHKERRQ(ierr); 788 789 info->nz_used = irecv[0]; 790 info->nz_allocated = irecv[1]; 791 info->nz_unneeded = irecv[2]; 792 info->memory = irecv[3]; 793 info->mallocs = irecv[4]; 794 } else if (flag == MAT_GLOBAL_SUM) { 795 ierr = MPI_Allreduce(isend,irecv,5,MPIU_REAL,MPIU_SUM,PetscObjectComm((PetscObject)A));CHKERRQ(ierr); 796 797 info->nz_used = irecv[0]; 798 info->nz_allocated = irecv[1]; 799 info->nz_unneeded = irecv[2]; 800 info->memory = irecv[3]; 801 info->mallocs = irecv[4]; 802 } 803 info->fill_ratio_given = 0; /* no parallel LU/ILU/Cholesky */ 804 info->fill_ratio_needed = 0; 805 info->factor_mallocs = 0; 806 PetscFunctionReturn(0); 807 } 808 809 #undef __FUNCT__ 810 #define __FUNCT__ "MatSetOption_MPIDense" 811 PetscErrorCode MatSetOption_MPIDense(Mat A,MatOption op,PetscBool flg) 812 { 813 Mat_MPIDense *a = (Mat_MPIDense*)A->data; 814 PetscErrorCode ierr; 815 816 PetscFunctionBegin; 817 switch (op) { 818 case MAT_NEW_NONZERO_LOCATIONS: 819 case MAT_NEW_NONZERO_LOCATION_ERR: 820 case MAT_NEW_NONZERO_ALLOCATION_ERR: 821 ierr = MatSetOption(a->A,op,flg);CHKERRQ(ierr); 822 break; 823 case MAT_ROW_ORIENTED: 824 a->roworiented = flg; 825 826 ierr = MatSetOption(a->A,op,flg);CHKERRQ(ierr); 827 break; 828 case MAT_NEW_DIAGONALS: 829 case MAT_KEEP_NONZERO_PATTERN: 830 case MAT_USE_HASH_TABLE: 831 ierr = PetscInfo1(A,"Option %s ignored\n",MatOptions[op]);CHKERRQ(ierr); 832 break; 833 case MAT_IGNORE_OFF_PROC_ENTRIES: 834 a->donotstash = flg; 835 break; 836 case MAT_SYMMETRIC: 837 case MAT_STRUCTURALLY_SYMMETRIC: 838 case MAT_HERMITIAN: 839 case MAT_SYMMETRY_ETERNAL: 840 case MAT_IGNORE_LOWER_TRIANGULAR: 841 ierr = PetscInfo1(A,"Option %s ignored\n",MatOptions[op]);CHKERRQ(ierr); 842 break; 843 default: 844 SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_SUP,"unknown option %s",MatOptions[op]); 845 } 846 PetscFunctionReturn(0); 847 } 848 849 850 #undef __FUNCT__ 851 #define __FUNCT__ "MatDiagonalScale_MPIDense" 852 PetscErrorCode MatDiagonalScale_MPIDense(Mat A,Vec ll,Vec rr) 853 { 854 Mat_MPIDense *mdn = (Mat_MPIDense*)A->data; 855 Mat_SeqDense *mat = (Mat_SeqDense*)mdn->A->data; 856 PetscScalar *l,*r,x,*v; 857 PetscErrorCode ierr; 858 PetscInt i,j,s2a,s3a,s2,s3,m=mdn->A->rmap->n,n=mdn->A->cmap->n; 859 860 PetscFunctionBegin; 861 ierr = MatGetLocalSize(A,&s2,&s3);CHKERRQ(ierr); 862 if (ll) { 863 ierr = VecGetLocalSize(ll,&s2a);CHKERRQ(ierr); 864 if (s2a != s2) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_ARG_SIZ,"Left scaling vector non-conforming local size, %d != %d.", s2a, s2); 865 ierr = VecGetArray(ll,&l);CHKERRQ(ierr); 866 for (i=0; i<m; i++) { 867 x = l[i]; 868 v = mat->v + i; 869 for (j=0; j<n; j++) { (*v) *= x; v+= m;} 870 } 871 ierr = VecRestoreArray(ll,&l);CHKERRQ(ierr); 872 ierr = PetscLogFlops(n*m);CHKERRQ(ierr); 873 } 874 if (rr) { 875 ierr = VecGetLocalSize(rr,&s3a);CHKERRQ(ierr); 876 if (s3a != s3) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_ARG_SIZ,"Right scaling vec non-conforming local size, %d != %d.", s3a, s3); 877 ierr = VecScatterBegin(mdn->Mvctx,rr,mdn->lvec,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 878 ierr = VecScatterEnd(mdn->Mvctx,rr,mdn->lvec,INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr); 879 ierr = VecGetArray(mdn->lvec,&r);CHKERRQ(ierr); 880 for (i=0; i<n; i++) { 881 x = r[i]; 882 v = mat->v + i*m; 883 for (j=0; j<m; j++) (*v++) *= x; 884 } 885 ierr = VecRestoreArray(mdn->lvec,&r);CHKERRQ(ierr); 886 ierr = PetscLogFlops(n*m);CHKERRQ(ierr); 887 } 888 PetscFunctionReturn(0); 889 } 890 891 #undef __FUNCT__ 892 #define __FUNCT__ "MatNorm_MPIDense" 893 PetscErrorCode MatNorm_MPIDense(Mat A,NormType type,PetscReal *nrm) 894 { 895 Mat_MPIDense *mdn = (Mat_MPIDense*)A->data; 896 Mat_SeqDense *mat = (Mat_SeqDense*)mdn->A->data; 897 PetscErrorCode ierr; 898 PetscInt i,j; 899 PetscReal sum = 0.0; 900 PetscScalar *v = mat->v; 901 902 PetscFunctionBegin; 903 if (mdn->size == 1) { 904 ierr = MatNorm(mdn->A,type,nrm);CHKERRQ(ierr); 905 } else { 906 if (type == NORM_FROBENIUS) { 907 for (i=0; i<mdn->A->cmap->n*mdn->A->rmap->n; i++) { 908 sum += PetscRealPart(PetscConj(*v)*(*v)); v++; 909 } 910 ierr = MPI_Allreduce(&sum,nrm,1,MPIU_REAL,MPIU_SUM,PetscObjectComm((PetscObject)A));CHKERRQ(ierr); 911 *nrm = PetscSqrtReal(*nrm); 912 ierr = PetscLogFlops(2.0*mdn->A->cmap->n*mdn->A->rmap->n);CHKERRQ(ierr); 913 } else if (type == NORM_1) { 914 PetscReal *tmp,*tmp2; 915 ierr = PetscMalloc2(A->cmap->N,&tmp,A->cmap->N,&tmp2);CHKERRQ(ierr); 916 ierr = PetscMemzero(tmp,A->cmap->N*sizeof(PetscReal));CHKERRQ(ierr); 917 ierr = PetscMemzero(tmp2,A->cmap->N*sizeof(PetscReal));CHKERRQ(ierr); 918 *nrm = 0.0; 919 v = mat->v; 920 for (j=0; j<mdn->A->cmap->n; j++) { 921 for (i=0; i<mdn->A->rmap->n; i++) { 922 tmp[j] += PetscAbsScalar(*v); v++; 923 } 924 } 925 ierr = MPI_Allreduce(tmp,tmp2,A->cmap->N,MPIU_REAL,MPIU_SUM,PetscObjectComm((PetscObject)A));CHKERRQ(ierr); 926 for (j=0; j<A->cmap->N; j++) { 927 if (tmp2[j] > *nrm) *nrm = tmp2[j]; 928 } 929 ierr = PetscFree2(tmp,tmp);CHKERRQ(ierr); 930 ierr = PetscLogFlops(A->cmap->n*A->rmap->n);CHKERRQ(ierr); 931 } else if (type == NORM_INFINITY) { /* max row norm */ 932 PetscReal ntemp; 933 ierr = MatNorm(mdn->A,type,&ntemp);CHKERRQ(ierr); 934 ierr = MPI_Allreduce(&ntemp,nrm,1,MPIU_REAL,MPIU_MAX,PetscObjectComm((PetscObject)A));CHKERRQ(ierr); 935 } else SETERRQ(PetscObjectComm((PetscObject)A),PETSC_ERR_SUP,"No support for two norm"); 936 } 937 PetscFunctionReturn(0); 938 } 939 940 #undef __FUNCT__ 941 #define __FUNCT__ "MatTranspose_MPIDense" 942 PetscErrorCode MatTranspose_MPIDense(Mat A,MatReuse reuse,Mat *matout) 943 { 944 Mat_MPIDense *a = (Mat_MPIDense*)A->data; 945 Mat_SeqDense *Aloc = (Mat_SeqDense*)a->A->data; 946 Mat B; 947 PetscInt M = A->rmap->N,N = A->cmap->N,m,n,*rwork,rstart = A->rmap->rstart; 948 PetscErrorCode ierr; 949 PetscInt j,i; 950 PetscScalar *v; 951 952 PetscFunctionBegin; 953 if (reuse == MAT_REUSE_MATRIX && A == *matout && M != N) SETERRQ(PetscObjectComm((PetscObject)A),PETSC_ERR_SUP,"Supports square matrix only in-place"); 954 if (reuse == MAT_INITIAL_MATRIX || A == *matout) { 955 ierr = MatCreate(PetscObjectComm((PetscObject)A),&B);CHKERRQ(ierr); 956 ierr = MatSetSizes(B,A->cmap->n,A->rmap->n,N,M);CHKERRQ(ierr); 957 ierr = MatSetType(B,((PetscObject)A)->type_name);CHKERRQ(ierr); 958 ierr = MatMPIDenseSetPreallocation(B,NULL);CHKERRQ(ierr); 959 } else { 960 B = *matout; 961 } 962 963 m = a->A->rmap->n; n = a->A->cmap->n; v = Aloc->v; 964 ierr = PetscMalloc1(m,&rwork);CHKERRQ(ierr); 965 for (i=0; i<m; i++) rwork[i] = rstart + i; 966 for (j=0; j<n; j++) { 967 ierr = MatSetValues(B,1,&j,m,rwork,v,INSERT_VALUES);CHKERRQ(ierr); 968 v += m; 969 } 970 ierr = PetscFree(rwork);CHKERRQ(ierr); 971 ierr = MatAssemblyBegin(B,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 972 ierr = MatAssemblyEnd(B,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 973 if (reuse == MAT_INITIAL_MATRIX || *matout != A) { 974 *matout = B; 975 } else { 976 ierr = MatHeaderMerge(A,B);CHKERRQ(ierr); 977 } 978 PetscFunctionReturn(0); 979 } 980 981 982 static PetscErrorCode MatDuplicate_MPIDense(Mat,MatDuplicateOption,Mat*); 983 extern PetscErrorCode MatScale_MPIDense(Mat,PetscScalar); 984 985 #undef __FUNCT__ 986 #define __FUNCT__ "MatSetUp_MPIDense" 987 PetscErrorCode MatSetUp_MPIDense(Mat A) 988 { 989 PetscErrorCode ierr; 990 991 PetscFunctionBegin; 992 ierr = MatMPIDenseSetPreallocation(A,0);CHKERRQ(ierr); 993 PetscFunctionReturn(0); 994 } 995 996 #undef __FUNCT__ 997 #define __FUNCT__ "MatAXPY_MPIDense" 998 PetscErrorCode MatAXPY_MPIDense(Mat Y,PetscScalar alpha,Mat X,MatStructure str) 999 { 1000 PetscErrorCode ierr; 1001 Mat_MPIDense *A = (Mat_MPIDense*)Y->data, *B = (Mat_MPIDense*)X->data; 1002 1003 PetscFunctionBegin; 1004 ierr = MatAXPY(A->A,alpha,B->A,str);CHKERRQ(ierr); 1005 ierr = PetscObjectStateIncrease((PetscObject)Y);CHKERRQ(ierr); 1006 PetscFunctionReturn(0); 1007 } 1008 1009 #undef __FUNCT__ 1010 #define __FUNCT__ "MatConjugate_MPIDense" 1011 PetscErrorCode MatConjugate_MPIDense(Mat mat) 1012 { 1013 Mat_MPIDense *a = (Mat_MPIDense*)mat->data; 1014 PetscErrorCode ierr; 1015 1016 PetscFunctionBegin; 1017 ierr = MatConjugate(a->A);CHKERRQ(ierr); 1018 PetscFunctionReturn(0); 1019 } 1020 1021 #undef __FUNCT__ 1022 #define __FUNCT__ "MatRealPart_MPIDense" 1023 PetscErrorCode MatRealPart_MPIDense(Mat A) 1024 { 1025 Mat_MPIDense *a = (Mat_MPIDense*)A->data; 1026 PetscErrorCode ierr; 1027 1028 PetscFunctionBegin; 1029 ierr = MatRealPart(a->A);CHKERRQ(ierr); 1030 PetscFunctionReturn(0); 1031 } 1032 1033 #undef __FUNCT__ 1034 #define __FUNCT__ "MatImaginaryPart_MPIDense" 1035 PetscErrorCode MatImaginaryPart_MPIDense(Mat A) 1036 { 1037 Mat_MPIDense *a = (Mat_MPIDense*)A->data; 1038 PetscErrorCode ierr; 1039 1040 PetscFunctionBegin; 1041 ierr = MatImaginaryPart(a->A);CHKERRQ(ierr); 1042 PetscFunctionReturn(0); 1043 } 1044 1045 extern PetscErrorCode MatGetColumnNorms_SeqDense(Mat,NormType,PetscReal*); 1046 #undef __FUNCT__ 1047 #define __FUNCT__ "MatGetColumnNorms_MPIDense" 1048 PetscErrorCode MatGetColumnNorms_MPIDense(Mat A,NormType type,PetscReal *norms) 1049 { 1050 PetscErrorCode ierr; 1051 PetscInt i,n; 1052 Mat_MPIDense *a = (Mat_MPIDense*) A->data; 1053 PetscReal *work; 1054 1055 PetscFunctionBegin; 1056 ierr = MatGetSize(A,NULL,&n);CHKERRQ(ierr); 1057 ierr = PetscMalloc1(n,&work);CHKERRQ(ierr); 1058 ierr = MatGetColumnNorms_SeqDense(a->A,type,work);CHKERRQ(ierr); 1059 if (type == NORM_2) { 1060 for (i=0; i<n; i++) work[i] *= work[i]; 1061 } 1062 if (type == NORM_INFINITY) { 1063 ierr = MPI_Allreduce(work,norms,n,MPIU_REAL,MPIU_MAX,A->hdr.comm);CHKERRQ(ierr); 1064 } else { 1065 ierr = MPI_Allreduce(work,norms,n,MPIU_REAL,MPIU_SUM,A->hdr.comm);CHKERRQ(ierr); 1066 } 1067 ierr = PetscFree(work);CHKERRQ(ierr); 1068 if (type == NORM_2) { 1069 for (i=0; i<n; i++) norms[i] = PetscSqrtReal(norms[i]); 1070 } 1071 PetscFunctionReturn(0); 1072 } 1073 1074 #undef __FUNCT__ 1075 #define __FUNCT__ "MatSetRandom_MPIDense" 1076 static PetscErrorCode MatSetRandom_MPIDense(Mat x,PetscRandom rctx) 1077 { 1078 Mat_MPIDense *d = (Mat_MPIDense*)x->data; 1079 PetscErrorCode ierr; 1080 PetscScalar *a; 1081 PetscInt m,n,i; 1082 1083 PetscFunctionBegin; 1084 ierr = MatGetSize(d->A,&m,&n);CHKERRQ(ierr); 1085 ierr = MatDenseGetArray(d->A,&a);CHKERRQ(ierr); 1086 for (i=0; i<m*n; i++) { 1087 ierr = PetscRandomGetValue(rctx,a+i);CHKERRQ(ierr); 1088 } 1089 ierr = MatDenseRestoreArray(d->A,&a);CHKERRQ(ierr); 1090 PetscFunctionReturn(0); 1091 } 1092 1093 /* -------------------------------------------------------------------*/ 1094 static struct _MatOps MatOps_Values = { MatSetValues_MPIDense, 1095 MatGetRow_MPIDense, 1096 MatRestoreRow_MPIDense, 1097 MatMult_MPIDense, 1098 /* 4*/ MatMultAdd_MPIDense, 1099 MatMultTranspose_MPIDense, 1100 MatMultTransposeAdd_MPIDense, 1101 0, 1102 0, 1103 0, 1104 /* 10*/ 0, 1105 0, 1106 0, 1107 0, 1108 MatTranspose_MPIDense, 1109 /* 15*/ MatGetInfo_MPIDense, 1110 MatEqual_MPIDense, 1111 MatGetDiagonal_MPIDense, 1112 MatDiagonalScale_MPIDense, 1113 MatNorm_MPIDense, 1114 /* 20*/ MatAssemblyBegin_MPIDense, 1115 MatAssemblyEnd_MPIDense, 1116 MatSetOption_MPIDense, 1117 MatZeroEntries_MPIDense, 1118 /* 24*/ MatZeroRows_MPIDense, 1119 0, 1120 0, 1121 0, 1122 0, 1123 /* 29*/ MatSetUp_MPIDense, 1124 0, 1125 0, 1126 0, 1127 0, 1128 /* 34*/ MatDuplicate_MPIDense, 1129 0, 1130 0, 1131 0, 1132 0, 1133 /* 39*/ MatAXPY_MPIDense, 1134 MatGetSubMatrices_MPIDense, 1135 0, 1136 MatGetValues_MPIDense, 1137 0, 1138 /* 44*/ 0, 1139 MatScale_MPIDense, 1140 0, 1141 0, 1142 0, 1143 /* 49*/ MatSetRandom_MPIDense, 1144 0, 1145 0, 1146 0, 1147 0, 1148 /* 54*/ 0, 1149 0, 1150 0, 1151 0, 1152 0, 1153 /* 59*/ MatGetSubMatrix_MPIDense, 1154 MatDestroy_MPIDense, 1155 MatView_MPIDense, 1156 0, 1157 0, 1158 /* 64*/ 0, 1159 0, 1160 0, 1161 0, 1162 0, 1163 /* 69*/ 0, 1164 0, 1165 0, 1166 0, 1167 0, 1168 /* 74*/ 0, 1169 0, 1170 0, 1171 0, 1172 0, 1173 /* 79*/ 0, 1174 0, 1175 0, 1176 0, 1177 /* 83*/ MatLoad_MPIDense, 1178 0, 1179 0, 1180 0, 1181 0, 1182 0, 1183 /* 89*/ 1184 0, 1185 0, 1186 0, 1187 0, 1188 0, 1189 /* 94*/ 0, 1190 0, 1191 0, 1192 0, 1193 0, 1194 /* 99*/ 0, 1195 0, 1196 0, 1197 MatConjugate_MPIDense, 1198 0, 1199 /*104*/ 0, 1200 MatRealPart_MPIDense, 1201 MatImaginaryPart_MPIDense, 1202 0, 1203 0, 1204 /*109*/ 0, 1205 0, 1206 0, 1207 0, 1208 0, 1209 /*114*/ 0, 1210 0, 1211 0, 1212 0, 1213 0, 1214 /*119*/ 0, 1215 0, 1216 0, 1217 0, 1218 0, 1219 /*124*/ 0, 1220 MatGetColumnNorms_MPIDense, 1221 0, 1222 0, 1223 0, 1224 /*129*/ 0, 1225 0, 1226 0, 1227 0, 1228 0, 1229 /*134*/ 0, 1230 0, 1231 0, 1232 0, 1233 0, 1234 /*139*/ 0, 1235 0, 1236 0 1237 }; 1238 1239 #undef __FUNCT__ 1240 #define __FUNCT__ "MatMPIDenseSetPreallocation_MPIDense" 1241 PetscErrorCode MatMPIDenseSetPreallocation_MPIDense(Mat mat,PetscScalar *data) 1242 { 1243 Mat_MPIDense *a; 1244 PetscErrorCode ierr; 1245 1246 PetscFunctionBegin; 1247 mat->preallocated = PETSC_TRUE; 1248 /* Note: For now, when data is specified above, this assumes the user correctly 1249 allocates the local dense storage space. We should add error checking. */ 1250 1251 a = (Mat_MPIDense*)mat->data; 1252 ierr = PetscLayoutSetUp(mat->rmap);CHKERRQ(ierr); 1253 ierr = PetscLayoutSetUp(mat->cmap);CHKERRQ(ierr); 1254 a->nvec = mat->cmap->n; 1255 1256 ierr = MatCreate(PETSC_COMM_SELF,&a->A);CHKERRQ(ierr); 1257 ierr = MatSetSizes(a->A,mat->rmap->n,mat->cmap->N,mat->rmap->n,mat->cmap->N);CHKERRQ(ierr); 1258 ierr = MatSetType(a->A,MATSEQDENSE);CHKERRQ(ierr); 1259 ierr = MatSeqDenseSetPreallocation(a->A,data);CHKERRQ(ierr); 1260 ierr = PetscLogObjectParent((PetscObject)mat,(PetscObject)a->A);CHKERRQ(ierr); 1261 PetscFunctionReturn(0); 1262 } 1263 1264 #undef __FUNCT__ 1265 #define __FUNCT__ "MatConvert_MPIDense_Elemental" 1266 PETSC_EXTERN PetscErrorCode MatConvert_MPIDense_Elemental(Mat A, MatType newtype,MatReuse reuse,Mat *newmat) 1267 { 1268 PetscFunctionBegin; 1269 SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP,"No support for requested operation"); 1270 PetscFunctionReturn(0); 1271 } 1272 1273 #undef __FUNCT__ 1274 #define __FUNCT__ "MatCreate_MPIDense" 1275 PETSC_EXTERN PetscErrorCode MatCreate_MPIDense(Mat mat) 1276 { 1277 Mat_MPIDense *a; 1278 PetscErrorCode ierr; 1279 1280 PetscFunctionBegin; 1281 ierr = PetscNewLog(mat,&a);CHKERRQ(ierr); 1282 mat->data = (void*)a; 1283 ierr = PetscMemcpy(mat->ops,&MatOps_Values,sizeof(struct _MatOps));CHKERRQ(ierr); 1284 1285 mat->insertmode = NOT_SET_VALUES; 1286 ierr = MPI_Comm_rank(PetscObjectComm((PetscObject)mat),&a->rank);CHKERRQ(ierr); 1287 ierr = MPI_Comm_size(PetscObjectComm((PetscObject)mat),&a->size);CHKERRQ(ierr); 1288 1289 /* build cache for off array entries formed */ 1290 a->donotstash = PETSC_FALSE; 1291 1292 ierr = MatStashCreate_Private(PetscObjectComm((PetscObject)mat),1,&mat->stash);CHKERRQ(ierr); 1293 1294 /* stuff used for matrix vector multiply */ 1295 a->lvec = 0; 1296 a->Mvctx = 0; 1297 a->roworiented = PETSC_TRUE; 1298 1299 ierr = PetscObjectComposeFunction((PetscObject)mat,"MatDenseGetArray_C",MatDenseGetArray_MPIDense);CHKERRQ(ierr); 1300 ierr = PetscObjectComposeFunction((PetscObject)mat,"MatDenseRestoreArray_C",MatDenseRestoreArray_MPIDense);CHKERRQ(ierr); 1301 #if defined(PETSC_HAVE_ELEMENTAL) 1302 ierr = PetscObjectComposeFunction((PetscObject)mat,"MatConvert_mpidense_elemental_C",MatConvert_MPIDense_Elemental);CHKERRQ(ierr); 1303 #endif 1304 ierr = PetscObjectComposeFunction((PetscObject)mat,"MatGetDiagonalBlock_C",MatGetDiagonalBlock_MPIDense);CHKERRQ(ierr); 1305 ierr = PetscObjectComposeFunction((PetscObject)mat,"MatMPIDenseSetPreallocation_C",MatMPIDenseSetPreallocation_MPIDense);CHKERRQ(ierr); 1306 ierr = PetscObjectComposeFunction((PetscObject)mat,"MatMatMult_mpiaij_mpidense_C",MatMatMult_MPIAIJ_MPIDense);CHKERRQ(ierr); 1307 ierr = PetscObjectComposeFunction((PetscObject)mat,"MatMatMultSymbolic_mpiaij_mpidense_C",MatMatMultSymbolic_MPIAIJ_MPIDense);CHKERRQ(ierr); 1308 ierr = PetscObjectComposeFunction((PetscObject)mat,"MatMatMultNumeric_mpiaij_mpidense_C",MatMatMultNumeric_MPIAIJ_MPIDense);CHKERRQ(ierr); 1309 1310 ierr = PetscObjectComposeFunction((PetscObject)mat,"MatTransposeMatMult_mpiaij_mpidense_C",MatTransposeMatMult_MPIAIJ_MPIDense);CHKERRQ(ierr); 1311 ierr = PetscObjectComposeFunction((PetscObject)mat,"MatTransposeMatMultSymbolic_mpiaij_mpidense_C",MatTransposeMatMultSymbolic_MPIAIJ_MPIDense);CHKERRQ(ierr); 1312 ierr = PetscObjectComposeFunction((PetscObject)mat,"MatTransposeMatMultNumeric_mpiaij_mpidense_C",MatTransposeMatMultNumeric_MPIAIJ_MPIDense);CHKERRQ(ierr); 1313 ierr = PetscObjectChangeTypeName((PetscObject)mat,MATMPIDENSE);CHKERRQ(ierr); 1314 PetscFunctionReturn(0); 1315 } 1316 1317 /*MC 1318 MATDENSE - MATDENSE = "dense" - A matrix type to be used for dense matrices. 1319 1320 This matrix type is identical to MATSEQDENSE when constructed with a single process communicator, 1321 and MATMPIDENSE otherwise. 1322 1323 Options Database Keys: 1324 . -mat_type dense - sets the matrix type to "dense" during a call to MatSetFromOptions() 1325 1326 Level: beginner 1327 1328 1329 .seealso: MatCreateMPIDense,MATSEQDENSE,MATMPIDENSE 1330 M*/ 1331 1332 #undef __FUNCT__ 1333 #define __FUNCT__ "MatMPIDenseSetPreallocation" 1334 /*@C 1335 MatMPIDenseSetPreallocation - Sets the array used to store the matrix entries 1336 1337 Not collective 1338 1339 Input Parameters: 1340 . B - the matrix 1341 - data - optional location of matrix data. Set data=NULL for PETSc 1342 to control all matrix memory allocation. 1343 1344 Notes: 1345 The dense format is fully compatible with standard Fortran 77 1346 storage by columns. 1347 1348 The data input variable is intended primarily for Fortran programmers 1349 who wish to allocate their own matrix memory space. Most users should 1350 set data=NULL. 1351 1352 Level: intermediate 1353 1354 .keywords: matrix,dense, parallel 1355 1356 .seealso: MatCreate(), MatCreateSeqDense(), MatSetValues() 1357 @*/ 1358 PetscErrorCode MatMPIDenseSetPreallocation(Mat B,PetscScalar *data) 1359 { 1360 PetscErrorCode ierr; 1361 1362 PetscFunctionBegin; 1363 ierr = PetscTryMethod(B,"MatMPIDenseSetPreallocation_C",(Mat,PetscScalar*),(B,data));CHKERRQ(ierr); 1364 PetscFunctionReturn(0); 1365 } 1366 1367 #undef __FUNCT__ 1368 #define __FUNCT__ "MatCreateDense" 1369 /*@C 1370 MatCreateDense - Creates a parallel matrix in dense format. 1371 1372 Collective on MPI_Comm 1373 1374 Input Parameters: 1375 + comm - MPI communicator 1376 . m - number of local rows (or PETSC_DECIDE to have calculated if M is given) 1377 . n - number of local columns (or PETSC_DECIDE to have calculated if N is given) 1378 . M - number of global rows (or PETSC_DECIDE to have calculated if m is given) 1379 . N - number of global columns (or PETSC_DECIDE to have calculated if n is given) 1380 - data - optional location of matrix data. Set data=NULL (NULL_SCALAR for Fortran users) for PETSc 1381 to control all matrix memory allocation. 1382 1383 Output Parameter: 1384 . A - the matrix 1385 1386 Notes: 1387 The dense format is fully compatible with standard Fortran 77 1388 storage by columns. 1389 1390 The data input variable is intended primarily for Fortran programmers 1391 who wish to allocate their own matrix memory space. Most users should 1392 set data=NULL (NULL_SCALAR for Fortran users). 1393 1394 The user MUST specify either the local or global matrix dimensions 1395 (possibly both). 1396 1397 Level: intermediate 1398 1399 .keywords: matrix,dense, parallel 1400 1401 .seealso: MatCreate(), MatCreateSeqDense(), MatSetValues() 1402 @*/ 1403 PetscErrorCode MatCreateDense(MPI_Comm comm,PetscInt m,PetscInt n,PetscInt M,PetscInt N,PetscScalar *data,Mat *A) 1404 { 1405 PetscErrorCode ierr; 1406 PetscMPIInt size; 1407 1408 PetscFunctionBegin; 1409 ierr = MatCreate(comm,A);CHKERRQ(ierr); 1410 ierr = MatSetSizes(*A,m,n,M,N);CHKERRQ(ierr); 1411 ierr = MPI_Comm_size(comm,&size);CHKERRQ(ierr); 1412 if (size > 1) { 1413 ierr = MatSetType(*A,MATMPIDENSE);CHKERRQ(ierr); 1414 ierr = MatMPIDenseSetPreallocation(*A,data);CHKERRQ(ierr); 1415 } else { 1416 ierr = MatSetType(*A,MATSEQDENSE);CHKERRQ(ierr); 1417 ierr = MatSeqDenseSetPreallocation(*A,data);CHKERRQ(ierr); 1418 } 1419 PetscFunctionReturn(0); 1420 } 1421 1422 #undef __FUNCT__ 1423 #define __FUNCT__ "MatDuplicate_MPIDense" 1424 static PetscErrorCode MatDuplicate_MPIDense(Mat A,MatDuplicateOption cpvalues,Mat *newmat) 1425 { 1426 Mat mat; 1427 Mat_MPIDense *a,*oldmat = (Mat_MPIDense*)A->data; 1428 PetscErrorCode ierr; 1429 1430 PetscFunctionBegin; 1431 *newmat = 0; 1432 ierr = MatCreate(PetscObjectComm((PetscObject)A),&mat);CHKERRQ(ierr); 1433 ierr = MatSetSizes(mat,A->rmap->n,A->cmap->n,A->rmap->N,A->cmap->N);CHKERRQ(ierr); 1434 ierr = MatSetType(mat,((PetscObject)A)->type_name);CHKERRQ(ierr); 1435 a = (Mat_MPIDense*)mat->data; 1436 ierr = PetscMemcpy(mat->ops,A->ops,sizeof(struct _MatOps));CHKERRQ(ierr); 1437 1438 mat->factortype = A->factortype; 1439 mat->assembled = PETSC_TRUE; 1440 mat->preallocated = PETSC_TRUE; 1441 1442 a->size = oldmat->size; 1443 a->rank = oldmat->rank; 1444 mat->insertmode = NOT_SET_VALUES; 1445 a->nvec = oldmat->nvec; 1446 a->donotstash = oldmat->donotstash; 1447 1448 ierr = PetscLayoutReference(A->rmap,&mat->rmap);CHKERRQ(ierr); 1449 ierr = PetscLayoutReference(A->cmap,&mat->cmap);CHKERRQ(ierr); 1450 1451 ierr = MatSetUpMultiply_MPIDense(mat);CHKERRQ(ierr); 1452 ierr = MatDuplicate(oldmat->A,cpvalues,&a->A);CHKERRQ(ierr); 1453 ierr = PetscLogObjectParent((PetscObject)mat,(PetscObject)a->A);CHKERRQ(ierr); 1454 1455 *newmat = mat; 1456 PetscFunctionReturn(0); 1457 } 1458 1459 #undef __FUNCT__ 1460 #define __FUNCT__ "MatLoad_MPIDense_DenseInFile" 1461 PetscErrorCode MatLoad_MPIDense_DenseInFile(MPI_Comm comm,PetscInt fd,PetscInt M,PetscInt N,Mat newmat,PetscInt sizesset) 1462 { 1463 PetscErrorCode ierr; 1464 PetscMPIInt rank,size; 1465 PetscInt *rowners,i,m,nz,j; 1466 PetscScalar *array,*vals,*vals_ptr; 1467 1468 PetscFunctionBegin; 1469 ierr = MPI_Comm_rank(comm,&rank);CHKERRQ(ierr); 1470 ierr = MPI_Comm_size(comm,&size);CHKERRQ(ierr); 1471 1472 /* determine ownership of all rows */ 1473 if (newmat->rmap->n < 0) m = M/size + ((M % size) > rank); 1474 else m = newmat->rmap->n; 1475 ierr = PetscMalloc1((size+2),&rowners);CHKERRQ(ierr); 1476 ierr = MPI_Allgather(&m,1,MPIU_INT,rowners+1,1,MPIU_INT,comm);CHKERRQ(ierr); 1477 rowners[0] = 0; 1478 for (i=2; i<=size; i++) { 1479 rowners[i] += rowners[i-1]; 1480 } 1481 1482 if (!sizesset) { 1483 ierr = MatSetSizes(newmat,m,PETSC_DECIDE,M,N);CHKERRQ(ierr); 1484 } 1485 ierr = MatMPIDenseSetPreallocation(newmat,NULL);CHKERRQ(ierr); 1486 ierr = MatDenseGetArray(newmat,&array);CHKERRQ(ierr); 1487 1488 if (!rank) { 1489 ierr = PetscMalloc1(m*N,&vals);CHKERRQ(ierr); 1490 1491 /* read in my part of the matrix numerical values */ 1492 ierr = PetscBinaryRead(fd,vals,m*N,PETSC_SCALAR);CHKERRQ(ierr); 1493 1494 /* insert into matrix-by row (this is why cannot directly read into array */ 1495 vals_ptr = vals; 1496 for (i=0; i<m; i++) { 1497 for (j=0; j<N; j++) { 1498 array[i + j*m] = *vals_ptr++; 1499 } 1500 } 1501 1502 /* read in other processors and ship out */ 1503 for (i=1; i<size; i++) { 1504 nz = (rowners[i+1] - rowners[i])*N; 1505 ierr = PetscBinaryRead(fd,vals,nz,PETSC_SCALAR);CHKERRQ(ierr); 1506 ierr = MPIULong_Send(vals,nz,MPIU_SCALAR,i,((PetscObject)(newmat))->tag,comm);CHKERRQ(ierr); 1507 } 1508 } else { 1509 /* receive numeric values */ 1510 ierr = PetscMalloc1(m*N,&vals);CHKERRQ(ierr); 1511 1512 /* receive message of values*/ 1513 ierr = MPIULong_Recv(vals,m*N,MPIU_SCALAR,0,((PetscObject)(newmat))->tag,comm);CHKERRQ(ierr); 1514 1515 /* insert into matrix-by row (this is why cannot directly read into array */ 1516 vals_ptr = vals; 1517 for (i=0; i<m; i++) { 1518 for (j=0; j<N; j++) { 1519 array[i + j*m] = *vals_ptr++; 1520 } 1521 } 1522 } 1523 ierr = MatDenseRestoreArray(newmat,&array);CHKERRQ(ierr); 1524 ierr = PetscFree(rowners);CHKERRQ(ierr); 1525 ierr = PetscFree(vals);CHKERRQ(ierr); 1526 ierr = MatAssemblyBegin(newmat,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 1527 ierr = MatAssemblyEnd(newmat,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 1528 PetscFunctionReturn(0); 1529 } 1530 1531 #undef __FUNCT__ 1532 #define __FUNCT__ "MatLoad_MPIDense" 1533 PetscErrorCode MatLoad_MPIDense(Mat newmat,PetscViewer viewer) 1534 { 1535 PetscScalar *vals,*svals; 1536 MPI_Comm comm; 1537 MPI_Status status; 1538 PetscMPIInt rank,size,tag = ((PetscObject)viewer)->tag,*rowners,*sndcounts,m,maxnz; 1539 PetscInt header[4],*rowlengths = 0,M,N,*cols; 1540 PetscInt *ourlens,*procsnz = 0,*offlens,jj,*mycols,*smycols; 1541 PetscInt i,nz,j,rstart,rend,sizesset=1,grows,gcols; 1542 int fd; 1543 PetscErrorCode ierr; 1544 1545 PetscFunctionBegin; 1546 ierr = PetscObjectGetComm((PetscObject)viewer,&comm);CHKERRQ(ierr); 1547 ierr = MPI_Comm_size(comm,&size);CHKERRQ(ierr); 1548 ierr = MPI_Comm_rank(comm,&rank);CHKERRQ(ierr); 1549 if (!rank) { 1550 ierr = PetscViewerBinaryGetDescriptor(viewer,&fd);CHKERRQ(ierr); 1551 ierr = PetscBinaryRead(fd,(char*)header,4,PETSC_INT);CHKERRQ(ierr); 1552 if (header[0] != MAT_FILE_CLASSID) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_FILE_UNEXPECTED,"not matrix object"); 1553 } 1554 if (newmat->rmap->n < 0 && newmat->rmap->N < 0 && newmat->cmap->n < 0 && newmat->cmap->N < 0) sizesset = 0; 1555 1556 ierr = MPI_Bcast(header+1,3,MPIU_INT,0,comm);CHKERRQ(ierr); 1557 M = header[1]; N = header[2]; nz = header[3]; 1558 1559 /* If global rows/cols are set to PETSC_DECIDE, set it to the sizes given in the file */ 1560 if (sizesset && newmat->rmap->N < 0) newmat->rmap->N = M; 1561 if (sizesset && newmat->cmap->N < 0) newmat->cmap->N = N; 1562 1563 /* If global sizes are set, check if they are consistent with that given in the file */ 1564 if (sizesset) { 1565 ierr = MatGetSize(newmat,&grows,&gcols);CHKERRQ(ierr); 1566 } 1567 if (sizesset && newmat->rmap->N != grows) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_FILE_UNEXPECTED, "Inconsistent # of rows:Matrix in file has (%d) and input matrix has (%d)",M,grows); 1568 if (sizesset && newmat->cmap->N != gcols) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_FILE_UNEXPECTED, "Inconsistent # of cols:Matrix in file has (%d) and input matrix has (%d)",N,gcols); 1569 1570 /* 1571 Handle case where matrix is stored on disk as a dense matrix 1572 */ 1573 if (nz == MATRIX_BINARY_FORMAT_DENSE) { 1574 ierr = MatLoad_MPIDense_DenseInFile(comm,fd,M,N,newmat,sizesset);CHKERRQ(ierr); 1575 PetscFunctionReturn(0); 1576 } 1577 1578 /* determine ownership of all rows */ 1579 if (newmat->rmap->n < 0) { 1580 ierr = PetscMPIIntCast(M/size + ((M % size) > rank),&m);CHKERRQ(ierr); 1581 } else { 1582 ierr = PetscMPIIntCast(newmat->rmap->n,&m);CHKERRQ(ierr); 1583 } 1584 ierr = PetscMalloc1((size+2),&rowners);CHKERRQ(ierr); 1585 ierr = MPI_Allgather(&m,1,MPI_INT,rowners+1,1,MPI_INT,comm);CHKERRQ(ierr); 1586 rowners[0] = 0; 1587 for (i=2; i<=size; i++) { 1588 rowners[i] += rowners[i-1]; 1589 } 1590 rstart = rowners[rank]; 1591 rend = rowners[rank+1]; 1592 1593 /* distribute row lengths to all processors */ 1594 ierr = PetscMalloc2(rend-rstart,&ourlens,rend-rstart,&offlens);CHKERRQ(ierr); 1595 if (!rank) { 1596 ierr = PetscMalloc1(M,&rowlengths);CHKERRQ(ierr); 1597 ierr = PetscBinaryRead(fd,rowlengths,M,PETSC_INT);CHKERRQ(ierr); 1598 ierr = PetscMalloc1(size,&sndcounts);CHKERRQ(ierr); 1599 for (i=0; i<size; i++) sndcounts[i] = rowners[i+1] - rowners[i]; 1600 ierr = MPI_Scatterv(rowlengths,sndcounts,rowners,MPIU_INT,ourlens,rend-rstart,MPIU_INT,0,comm);CHKERRQ(ierr); 1601 ierr = PetscFree(sndcounts);CHKERRQ(ierr); 1602 } else { 1603 ierr = MPI_Scatterv(0,0,0,MPIU_INT,ourlens,rend-rstart,MPIU_INT,0,comm);CHKERRQ(ierr); 1604 } 1605 1606 if (!rank) { 1607 /* calculate the number of nonzeros on each processor */ 1608 ierr = PetscMalloc1(size,&procsnz);CHKERRQ(ierr); 1609 ierr = PetscMemzero(procsnz,size*sizeof(PetscInt));CHKERRQ(ierr); 1610 for (i=0; i<size; i++) { 1611 for (j=rowners[i]; j< rowners[i+1]; j++) { 1612 procsnz[i] += rowlengths[j]; 1613 } 1614 } 1615 ierr = PetscFree(rowlengths);CHKERRQ(ierr); 1616 1617 /* determine max buffer needed and allocate it */ 1618 maxnz = 0; 1619 for (i=0; i<size; i++) { 1620 maxnz = PetscMax(maxnz,procsnz[i]); 1621 } 1622 ierr = PetscMalloc1(maxnz,&cols);CHKERRQ(ierr); 1623 1624 /* read in my part of the matrix column indices */ 1625 nz = procsnz[0]; 1626 ierr = PetscMalloc1(nz,&mycols);CHKERRQ(ierr); 1627 ierr = PetscBinaryRead(fd,mycols,nz,PETSC_INT);CHKERRQ(ierr); 1628 1629 /* read in every one elses and ship off */ 1630 for (i=1; i<size; i++) { 1631 nz = procsnz[i]; 1632 ierr = PetscBinaryRead(fd,cols,nz,PETSC_INT);CHKERRQ(ierr); 1633 ierr = MPI_Send(cols,nz,MPIU_INT,i,tag,comm);CHKERRQ(ierr); 1634 } 1635 ierr = PetscFree(cols);CHKERRQ(ierr); 1636 } else { 1637 /* determine buffer space needed for message */ 1638 nz = 0; 1639 for (i=0; i<m; i++) { 1640 nz += ourlens[i]; 1641 } 1642 ierr = PetscMalloc1((nz+1),&mycols);CHKERRQ(ierr); 1643 1644 /* receive message of column indices*/ 1645 ierr = MPI_Recv(mycols,nz,MPIU_INT,0,tag,comm,&status);CHKERRQ(ierr); 1646 ierr = MPI_Get_count(&status,MPIU_INT,&maxnz);CHKERRQ(ierr); 1647 if (maxnz != nz) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_FILE_UNEXPECTED,"something is wrong with file"); 1648 } 1649 1650 /* loop over local rows, determining number of off diagonal entries */ 1651 ierr = PetscMemzero(offlens,m*sizeof(PetscInt));CHKERRQ(ierr); 1652 jj = 0; 1653 for (i=0; i<m; i++) { 1654 for (j=0; j<ourlens[i]; j++) { 1655 if (mycols[jj] < rstart || mycols[jj] >= rend) offlens[i]++; 1656 jj++; 1657 } 1658 } 1659 1660 /* create our matrix */ 1661 for (i=0; i<m; i++) ourlens[i] -= offlens[i]; 1662 1663 if (!sizesset) { 1664 ierr = MatSetSizes(newmat,m,PETSC_DECIDE,M,N);CHKERRQ(ierr); 1665 } 1666 ierr = MatMPIDenseSetPreallocation(newmat,NULL);CHKERRQ(ierr); 1667 for (i=0; i<m; i++) ourlens[i] += offlens[i]; 1668 1669 if (!rank) { 1670 ierr = PetscMalloc1(maxnz,&vals);CHKERRQ(ierr); 1671 1672 /* read in my part of the matrix numerical values */ 1673 nz = procsnz[0]; 1674 ierr = PetscBinaryRead(fd,vals,nz,PETSC_SCALAR);CHKERRQ(ierr); 1675 1676 /* insert into matrix */ 1677 jj = rstart; 1678 smycols = mycols; 1679 svals = vals; 1680 for (i=0; i<m; i++) { 1681 ierr = MatSetValues(newmat,1,&jj,ourlens[i],smycols,svals,INSERT_VALUES);CHKERRQ(ierr); 1682 smycols += ourlens[i]; 1683 svals += ourlens[i]; 1684 jj++; 1685 } 1686 1687 /* read in other processors and ship out */ 1688 for (i=1; i<size; i++) { 1689 nz = procsnz[i]; 1690 ierr = PetscBinaryRead(fd,vals,nz,PETSC_SCALAR);CHKERRQ(ierr); 1691 ierr = MPI_Send(vals,nz,MPIU_SCALAR,i,((PetscObject)newmat)->tag,comm);CHKERRQ(ierr); 1692 } 1693 ierr = PetscFree(procsnz);CHKERRQ(ierr); 1694 } else { 1695 /* receive numeric values */ 1696 ierr = PetscMalloc1((nz+1),&vals);CHKERRQ(ierr); 1697 1698 /* receive message of values*/ 1699 ierr = MPI_Recv(vals,nz,MPIU_SCALAR,0,((PetscObject)newmat)->tag,comm,&status);CHKERRQ(ierr); 1700 ierr = MPI_Get_count(&status,MPIU_SCALAR,&maxnz);CHKERRQ(ierr); 1701 if (maxnz != nz) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_FILE_UNEXPECTED,"something is wrong with file"); 1702 1703 /* insert into matrix */ 1704 jj = rstart; 1705 smycols = mycols; 1706 svals = vals; 1707 for (i=0; i<m; i++) { 1708 ierr = MatSetValues(newmat,1,&jj,ourlens[i],smycols,svals,INSERT_VALUES);CHKERRQ(ierr); 1709 smycols += ourlens[i]; 1710 svals += ourlens[i]; 1711 jj++; 1712 } 1713 } 1714 ierr = PetscFree2(ourlens,offlens);CHKERRQ(ierr); 1715 ierr = PetscFree(vals);CHKERRQ(ierr); 1716 ierr = PetscFree(mycols);CHKERRQ(ierr); 1717 ierr = PetscFree(rowners);CHKERRQ(ierr); 1718 1719 ierr = MatAssemblyBegin(newmat,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 1720 ierr = MatAssemblyEnd(newmat,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 1721 PetscFunctionReturn(0); 1722 } 1723 1724 #undef __FUNCT__ 1725 #define __FUNCT__ "MatEqual_MPIDense" 1726 PetscErrorCode MatEqual_MPIDense(Mat A,Mat B,PetscBool *flag) 1727 { 1728 Mat_MPIDense *matB = (Mat_MPIDense*)B->data,*matA = (Mat_MPIDense*)A->data; 1729 Mat a,b; 1730 PetscBool flg; 1731 PetscErrorCode ierr; 1732 1733 PetscFunctionBegin; 1734 a = matA->A; 1735 b = matB->A; 1736 ierr = MatEqual(a,b,&flg);CHKERRQ(ierr); 1737 ierr = MPI_Allreduce(&flg,flag,1,MPIU_BOOL,MPI_LAND,PetscObjectComm((PetscObject)A));CHKERRQ(ierr); 1738 PetscFunctionReturn(0); 1739 } 1740 1741