1 2 /* 3 Routines to compute overlapping regions of a parallel MPI matrix 4 and to find submatrices that were shared across processors. 5 */ 6 #include <../src/mat/impls/baij/mpi/mpibaij.h> 7 #include <petscbt.h> 8 9 static PetscErrorCode MatIncreaseOverlap_MPIBAIJ_Local(Mat,PetscInt,char **,PetscInt*,PetscInt**); 10 static PetscErrorCode MatIncreaseOverlap_MPIBAIJ_Receive(Mat,PetscInt,PetscInt **,PetscInt**,PetscInt*); 11 extern PetscErrorCode MatGetRow_MPIBAIJ(Mat,PetscInt,PetscInt*,PetscInt**,PetscScalar**); 12 extern PetscErrorCode MatRestoreRow_MPIBAIJ(Mat,PetscInt,PetscInt*,PetscInt**,PetscScalar**); 13 14 #undef __FUNCT__ 15 #define __FUNCT__ "MatIncreaseOverlap_MPIBAIJ" 16 PetscErrorCode MatIncreaseOverlap_MPIBAIJ(Mat C,PetscInt imax,IS is[],PetscInt ov) 17 { 18 PetscErrorCode ierr; 19 PetscInt i,N=C->cmap->N, bs=C->rmap->bs; 20 IS *is_new; 21 22 PetscFunctionBegin; 23 ierr = PetscMalloc(imax*sizeof(IS),&is_new);CHKERRQ(ierr); 24 /* Convert the indices into block format */ 25 ierr = ISCompressIndicesGeneral(N,C->rmap->n,bs,imax,is,is_new);CHKERRQ(ierr); 26 if (ov < 0) { SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Negative overlap specified\n");} 27 for (i=0; i<ov; ++i) { 28 ierr = MatIncreaseOverlap_MPIBAIJ_Once(C,imax,is_new);CHKERRQ(ierr); 29 } 30 for (i=0; i<imax; i++) {ierr = ISDestroy(&is[i]);CHKERRQ(ierr);} 31 ierr = ISExpandIndicesGeneral(N,N,bs,imax,is_new,is);CHKERRQ(ierr); 32 for (i=0; i<imax; i++) {ierr = ISDestroy(&is_new[i]);CHKERRQ(ierr);} 33 ierr = PetscFree(is_new);CHKERRQ(ierr); 34 PetscFunctionReturn(0); 35 } 36 37 /* 38 Sample message format: 39 If a processor A wants processor B to process some elements corresponding 40 to index sets is[1], is[5] 41 mesg [0] = 2 (no of index sets in the mesg) 42 ----------- 43 mesg [1] = 1 => is[1] 44 mesg [2] = sizeof(is[1]); 45 ----------- 46 mesg [5] = 5 => is[5] 47 mesg [6] = sizeof(is[5]); 48 ----------- 49 mesg [7] 50 mesg [n] data(is[1]) 51 ----------- 52 mesg[n+1] 53 mesg[m] data(is[5]) 54 ----------- 55 56 Notes: 57 nrqs - no of requests sent (or to be sent out) 58 nrqr - no of requests recieved (which have to be or which have been processed 59 */ 60 #undef __FUNCT__ 61 #define __FUNCT__ "MatIncreaseOverlap_MPIBAIJ_Once" 62 PetscErrorCode MatIncreaseOverlap_MPIBAIJ_Once(Mat C,PetscInt imax,IS is[]) 63 { 64 Mat_MPIBAIJ *c = (Mat_MPIBAIJ*)C->data; 65 const PetscInt **idx,*idx_i; 66 PetscInt *n,*w3,*w4,**data,len; 67 PetscErrorCode ierr; 68 PetscMPIInt size,rank,tag1,tag2,*w2,*w1,nrqr; 69 PetscInt Mbs,i,j,k,**rbuf,row,proc=-1,nrqs,msz,**outdat,**ptr; 70 PetscInt *ctr,*pa,*tmp,*isz,*isz1,**xdata,**rbuf2,*d_p; 71 PetscMPIInt *onodes1,*olengths1,*onodes2,*olengths2; 72 PetscBT *table; 73 MPI_Comm comm; 74 MPI_Request *s_waits1,*r_waits1,*s_waits2,*r_waits2; 75 MPI_Status *s_status,*recv_status; 76 char *t_p; 77 78 PetscFunctionBegin; 79 comm = ((PetscObject)C)->comm; 80 size = c->size; 81 rank = c->rank; 82 Mbs = c->Mbs; 83 84 ierr = PetscObjectGetNewTag((PetscObject)C,&tag1);CHKERRQ(ierr); 85 ierr = PetscObjectGetNewTag((PetscObject)C,&tag2);CHKERRQ(ierr); 86 87 ierr = PetscMalloc2(imax+1,const PetscInt*,&idx,imax,PetscInt,&n);CHKERRQ(ierr); 88 89 for (i=0; i<imax; i++) { 90 ierr = ISGetIndices(is[i],&idx[i]);CHKERRQ(ierr); 91 ierr = ISGetLocalSize(is[i],&n[i]);CHKERRQ(ierr); 92 } 93 94 /* evaluate communication - mesg to who,length of mesg, and buffer space 95 required. Based on this, buffers are allocated, and data copied into them*/ 96 ierr = PetscMalloc4(size,PetscMPIInt,&w1,size,PetscMPIInt,&w2,size,PetscInt,&w3,size,PetscInt,&w4);CHKERRQ(ierr); 97 ierr = PetscMemzero(w1,size*sizeof(PetscMPIInt));CHKERRQ(ierr); 98 ierr = PetscMemzero(w2,size*sizeof(PetscMPIInt));CHKERRQ(ierr); 99 ierr = PetscMemzero(w3,size*sizeof(PetscInt));CHKERRQ(ierr); 100 for (i=0; i<imax; i++) { 101 ierr = PetscMemzero(w4,size*sizeof(PetscInt));CHKERRQ(ierr); /* initialise work vector*/ 102 idx_i = idx[i]; 103 len = n[i]; 104 for (j=0; j<len; j++) { 105 row = idx_i[j]; 106 if (row < 0) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Index set cannot have negative entries"); 107 ierr = PetscLayoutFindOwner(C->rmap,row*C->rmap->bs,&proc);CHKERRQ(ierr); 108 w4[proc]++; 109 } 110 for (j=0; j<size; j++) { 111 if (w4[j]) { w1[j] += w4[j]; w3[j]++;} 112 } 113 } 114 115 nrqs = 0; /* no of outgoing messages */ 116 msz = 0; /* total mesg length (for all proc */ 117 w1[rank] = 0; /* no mesg sent to itself */ 118 w3[rank] = 0; 119 for (i=0; i<size; i++) { 120 if (w1[i]) {w2[i] = 1; nrqs++;} /* there exists a message to proc i */ 121 } 122 /* pa - is list of processors to communicate with */ 123 ierr = PetscMalloc((nrqs+1)*sizeof(PetscInt),&pa);CHKERRQ(ierr); 124 for (i=0,j=0; i<size; i++) { 125 if (w1[i]) {pa[j] = i; j++;} 126 } 127 128 /* Each message would have a header = 1 + 2*(no of IS) + data */ 129 for (i=0; i<nrqs; i++) { 130 j = pa[i]; 131 w1[j] += w2[j] + 2*w3[j]; 132 msz += w1[j]; 133 } 134 135 /* Determine the number of messages to expect, their lengths, from from-ids */ 136 ierr = PetscGatherNumberOfMessages(comm,w2,w1,&nrqr);CHKERRQ(ierr); 137 ierr = PetscGatherMessageLengths(comm,nrqs,nrqr,w1,&onodes1,&olengths1);CHKERRQ(ierr); 138 139 /* Now post the Irecvs corresponding to these messages */ 140 ierr = PetscPostIrecvInt(comm,tag1,nrqr,onodes1,olengths1,&rbuf,&r_waits1);CHKERRQ(ierr); 141 142 /* Allocate Memory for outgoing messages */ 143 ierr = PetscMalloc4(size,PetscInt*,&outdat,size,PetscInt*,&ptr,msz,PetscInt,&tmp,size,PetscInt,&ctr);CHKERRQ(ierr); 144 ierr = PetscMemzero(outdat,size*sizeof(PetscInt*));CHKERRQ(ierr); 145 ierr = PetscMemzero(ptr,size*sizeof(PetscInt*));CHKERRQ(ierr); 146 { 147 PetscInt *iptr = tmp,ict = 0; 148 for (i=0; i<nrqs; i++) { 149 j = pa[i]; 150 iptr += ict; 151 outdat[j] = iptr; 152 ict = w1[j]; 153 } 154 } 155 156 /* Form the outgoing messages */ 157 /*plug in the headers*/ 158 for (i=0; i<nrqs; i++) { 159 j = pa[i]; 160 outdat[j][0] = 0; 161 ierr = PetscMemzero(outdat[j]+1,2*w3[j]*sizeof(PetscInt));CHKERRQ(ierr); 162 ptr[j] = outdat[j] + 2*w3[j] + 1; 163 } 164 165 /* Memory for doing local proc's work*/ 166 { 167 ierr = PetscMalloc5(imax,PetscBT,&table, imax,PetscInt*,&data, imax,PetscInt,&isz, 168 Mbs*imax,PetscInt,&d_p, (Mbs/PETSC_BITS_PER_BYTE+1)*imax,char,&t_p);CHKERRQ(ierr); 169 ierr = PetscMemzero(table,imax*sizeof(PetscBT));CHKERRQ(ierr); 170 ierr = PetscMemzero(data,imax*sizeof(PetscInt*));CHKERRQ(ierr); 171 ierr = PetscMemzero(isz,imax*sizeof(PetscInt));CHKERRQ(ierr); 172 ierr = PetscMemzero(d_p,Mbs*imax*sizeof(PetscInt));CHKERRQ(ierr); 173 ierr = PetscMemzero(t_p,(Mbs/PETSC_BITS_PER_BYTE+1)*imax*sizeof(char));CHKERRQ(ierr); 174 175 for (i=0; i<imax; i++) { 176 table[i] = t_p + (Mbs/PETSC_BITS_PER_BYTE+1)*i; 177 data[i] = d_p + (Mbs)*i; 178 } 179 } 180 181 /* Parse the IS and update local tables and the outgoing buf with the data*/ 182 { 183 PetscInt n_i,*data_i,isz_i,*outdat_j,ctr_j; 184 PetscBT table_i; 185 186 for (i=0; i<imax; i++) { 187 ierr = PetscMemzero(ctr,size*sizeof(PetscInt));CHKERRQ(ierr); 188 n_i = n[i]; 189 table_i = table[i]; 190 idx_i = idx[i]; 191 data_i = data[i]; 192 isz_i = isz[i]; 193 for (j=0; j<n_i; j++) { /* parse the indices of each IS */ 194 row = idx_i[j]; 195 ierr = PetscLayoutFindOwner(C->rmap,row*C->rmap->bs,&proc);CHKERRQ(ierr); 196 if (proc != rank) { /* copy to the outgoing buffer */ 197 ctr[proc]++; 198 *ptr[proc] = row; 199 ptr[proc]++; 200 } else { /* Update the local table */ 201 if (!PetscBTLookupSet(table_i,row)) { data_i[isz_i++] = row;} 202 } 203 } 204 /* Update the headers for the current IS */ 205 for (j=0; j<size; j++) { /* Can Optimise this loop by using pa[] */ 206 if ((ctr_j = ctr[j])) { 207 outdat_j = outdat[j]; 208 k = ++outdat_j[0]; 209 outdat_j[2*k] = ctr_j; 210 outdat_j[2*k-1] = i; 211 } 212 } 213 isz[i] = isz_i; 214 } 215 } 216 217 /* Now post the sends */ 218 ierr = PetscMalloc((nrqs+1)*sizeof(MPI_Request),&s_waits1);CHKERRQ(ierr); 219 for (i=0; i<nrqs; ++i) { 220 j = pa[i]; 221 ierr = MPI_Isend(outdat[j],w1[j],MPIU_INT,j,tag1,comm,s_waits1+i);CHKERRQ(ierr); 222 } 223 224 /* No longer need the original indices*/ 225 for (i=0; i<imax; ++i) { 226 ierr = ISRestoreIndices(is[i],idx+i);CHKERRQ(ierr); 227 } 228 ierr = PetscFree2(idx,n);CHKERRQ(ierr); 229 230 for (i=0; i<imax; ++i) { 231 ierr = ISDestroy(&is[i]);CHKERRQ(ierr); 232 } 233 234 /* Do Local work*/ 235 ierr = MatIncreaseOverlap_MPIBAIJ_Local(C,imax,table,isz,data);CHKERRQ(ierr); 236 237 /* Receive messages*/ 238 ierr = PetscMalloc((nrqr+1)*sizeof(MPI_Status),&recv_status);CHKERRQ(ierr); 239 if (nrqr) {ierr = MPI_Waitall(nrqr,r_waits1,recv_status);CHKERRQ(ierr);} 240 241 ierr = PetscMalloc((nrqs+1)*sizeof(MPI_Status),&s_status);CHKERRQ(ierr); 242 if (nrqs) {ierr = MPI_Waitall(nrqs,s_waits1,s_status);CHKERRQ(ierr);} 243 244 /* Phase 1 sends are complete - deallocate buffers */ 245 ierr = PetscFree4(outdat,ptr,tmp,ctr);CHKERRQ(ierr); 246 ierr = PetscFree4(w1,w2,w3,w4);CHKERRQ(ierr); 247 248 ierr = PetscMalloc((nrqr+1)*sizeof(PetscInt*),&xdata);CHKERRQ(ierr); 249 ierr = PetscMalloc((nrqr+1)*sizeof(PetscInt),&isz1);CHKERRQ(ierr); 250 ierr = MatIncreaseOverlap_MPIBAIJ_Receive(C,nrqr,rbuf,xdata,isz1);CHKERRQ(ierr); 251 ierr = PetscFree(rbuf[0]);CHKERRQ(ierr); 252 ierr = PetscFree(rbuf);CHKERRQ(ierr); 253 254 /* Send the data back*/ 255 /* Do a global reduction to know the buffer space req for incoming messages*/ 256 { 257 PetscMPIInt *rw1; 258 259 ierr = PetscMalloc(size*sizeof(PetscInt),&rw1);CHKERRQ(ierr); 260 ierr = PetscMemzero(rw1,size*sizeof(PetscInt));CHKERRQ(ierr); 261 262 for (i=0; i<nrqr; ++i) { 263 proc = recv_status[i].MPI_SOURCE; 264 if (proc != onodes1[i]) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_PLIB,"MPI_SOURCE mismatch"); 265 rw1[proc] = isz1[i]; 266 } 267 268 ierr = PetscFree(onodes1);CHKERRQ(ierr); 269 ierr = PetscFree(olengths1);CHKERRQ(ierr); 270 271 /* Determine the number of messages to expect, their lengths, from from-ids */ 272 ierr = PetscGatherMessageLengths(comm,nrqr,nrqs,rw1,&onodes2,&olengths2);CHKERRQ(ierr); 273 ierr = PetscFree(rw1);CHKERRQ(ierr); 274 } 275 /* Now post the Irecvs corresponding to these messages */ 276 ierr = PetscPostIrecvInt(comm,tag2,nrqs,onodes2,olengths2,&rbuf2,&r_waits2);CHKERRQ(ierr); 277 278 /* Now post the sends */ 279 ierr = PetscMalloc((nrqr+1)*sizeof(MPI_Request),&s_waits2);CHKERRQ(ierr); 280 for (i=0; i<nrqr; ++i) { 281 j = recv_status[i].MPI_SOURCE; 282 ierr = MPI_Isend(xdata[i],isz1[i],MPIU_INT,j,tag2,comm,s_waits2+i);CHKERRQ(ierr); 283 } 284 285 /* receive work done on other processors*/ 286 { 287 PetscMPIInt idex; 288 PetscInt is_no,ct1,max,*rbuf2_i,isz_i,*data_i,jmax; 289 PetscBT table_i; 290 MPI_Status *status2; 291 292 ierr = PetscMalloc((PetscMax(nrqr,nrqs)+1)*sizeof(MPI_Status),&status2);CHKERRQ(ierr); 293 for (i=0; i<nrqs; ++i) { 294 ierr = MPI_Waitany(nrqs,r_waits2,&idex,status2+i);CHKERRQ(ierr); 295 /* Process the message*/ 296 rbuf2_i = rbuf2[idex]; 297 ct1 = 2*rbuf2_i[0]+1; 298 jmax = rbuf2[idex][0]; 299 for (j=1; j<=jmax; j++) { 300 max = rbuf2_i[2*j]; 301 is_no = rbuf2_i[2*j-1]; 302 isz_i = isz[is_no]; 303 data_i = data[is_no]; 304 table_i = table[is_no]; 305 for (k=0; k<max; k++,ct1++) { 306 row = rbuf2_i[ct1]; 307 if (!PetscBTLookupSet(table_i,row)) { data_i[isz_i++] = row;} 308 } 309 isz[is_no] = isz_i; 310 } 311 } 312 if (nrqr) {ierr = MPI_Waitall(nrqr,s_waits2,status2);CHKERRQ(ierr);} 313 ierr = PetscFree(status2);CHKERRQ(ierr); 314 } 315 316 for (i=0; i<imax; ++i) { 317 ierr = ISCreateGeneral(PETSC_COMM_SELF,isz[i],data[i],PETSC_COPY_VALUES,is+i);CHKERRQ(ierr); 318 } 319 320 321 ierr = PetscFree(onodes2);CHKERRQ(ierr); 322 ierr = PetscFree(olengths2);CHKERRQ(ierr); 323 324 ierr = PetscFree(pa);CHKERRQ(ierr); 325 ierr = PetscFree(rbuf2[0]);CHKERRQ(ierr); 326 ierr = PetscFree(rbuf2);CHKERRQ(ierr); 327 ierr = PetscFree(s_waits1);CHKERRQ(ierr); 328 ierr = PetscFree(r_waits1);CHKERRQ(ierr); 329 ierr = PetscFree(s_waits2);CHKERRQ(ierr); 330 ierr = PetscFree(r_waits2);CHKERRQ(ierr); 331 ierr = PetscFree5(table,data,isz,d_p,t_p);CHKERRQ(ierr); 332 ierr = PetscFree(s_status);CHKERRQ(ierr); 333 ierr = PetscFree(recv_status);CHKERRQ(ierr); 334 ierr = PetscFree(xdata[0]);CHKERRQ(ierr); 335 ierr = PetscFree(xdata);CHKERRQ(ierr); 336 ierr = PetscFree(isz1);CHKERRQ(ierr); 337 PetscFunctionReturn(0); 338 } 339 340 #undef __FUNCT__ 341 #define __FUNCT__ "MatIncreaseOverlap_MPIBAIJ_Local" 342 /* 343 MatIncreaseOverlap_MPIBAIJ_Local - Called by MatincreaseOverlap, to do 344 the work on the local processor. 345 346 Inputs: 347 C - MAT_MPIBAIJ; 348 imax - total no of index sets processed at a time; 349 table - an array of char - size = Mbs bits. 350 351 Output: 352 isz - array containing the count of the solution elements corresponding 353 to each index set; 354 data - pointer to the solutions 355 */ 356 static PetscErrorCode MatIncreaseOverlap_MPIBAIJ_Local(Mat C,PetscInt imax,PetscBT *table,PetscInt *isz,PetscInt **data) 357 { 358 Mat_MPIBAIJ *c = (Mat_MPIBAIJ*)C->data; 359 Mat A = c->A,B = c->B; 360 Mat_SeqBAIJ *a = (Mat_SeqBAIJ*)A->data,*b = (Mat_SeqBAIJ*)B->data; 361 PetscInt start,end,val,max,rstart,cstart,*ai,*aj; 362 PetscInt *bi,*bj,*garray,i,j,k,row,*data_i,isz_i; 363 PetscBT table_i; 364 365 PetscFunctionBegin; 366 rstart = c->rstartbs; 367 cstart = c->cstartbs; 368 ai = a->i; 369 aj = a->j; 370 bi = b->i; 371 bj = b->j; 372 garray = c->garray; 373 374 375 for (i=0; i<imax; i++) { 376 data_i = data[i]; 377 table_i = table[i]; 378 isz_i = isz[i]; 379 for (j=0,max=isz[i]; j<max; j++) { 380 row = data_i[j] - rstart; 381 start = ai[row]; 382 end = ai[row+1]; 383 for (k=start; k<end; k++) { /* Amat */ 384 val = aj[k] + cstart; 385 if (!PetscBTLookupSet(table_i,val)) { data_i[isz_i++] = val;} 386 } 387 start = bi[row]; 388 end = bi[row+1]; 389 for (k=start; k<end; k++) { /* Bmat */ 390 val = garray[bj[k]]; 391 if (!PetscBTLookupSet(table_i,val)) { data_i[isz_i++] = val;} 392 } 393 } 394 isz[i] = isz_i; 395 } 396 PetscFunctionReturn(0); 397 } 398 #undef __FUNCT__ 399 #define __FUNCT__ "MatIncreaseOverlap_MPIBAIJ_Receive" 400 /* 401 MatIncreaseOverlap_MPIBAIJ_Receive - Process the recieved messages, 402 and return the output 403 404 Input: 405 C - the matrix 406 nrqr - no of messages being processed. 407 rbuf - an array of pointers to the recieved requests 408 409 Output: 410 xdata - array of messages to be sent back 411 isz1 - size of each message 412 413 For better efficiency perhaps we should malloc separately each xdata[i], 414 then if a remalloc is required we need only copy the data for that one row 415 rather than all previous rows as it is now where a single large chunck of 416 memory is used. 417 418 */ 419 static PetscErrorCode MatIncreaseOverlap_MPIBAIJ_Receive(Mat C,PetscInt nrqr,PetscInt **rbuf,PetscInt **xdata,PetscInt * isz1) 420 { 421 Mat_MPIBAIJ *c = (Mat_MPIBAIJ*)C->data; 422 Mat A = c->A,B = c->B; 423 Mat_SeqBAIJ *a = (Mat_SeqBAIJ*)A->data,*b = (Mat_SeqBAIJ*)B->data; 424 PetscErrorCode ierr; 425 PetscInt rstart,cstart,*ai,*aj,*bi,*bj,*garray,i,j,k; 426 PetscInt row,total_sz,ct,ct1,ct2,ct3,mem_estimate,oct2,l,start,end; 427 PetscInt val,max1,max2,Mbs,no_malloc =0,*tmp,new_estimate,ctr; 428 PetscInt *rbuf_i,kmax,rbuf_0; 429 PetscBT xtable; 430 431 PetscFunctionBegin; 432 Mbs = c->Mbs; 433 rstart = c->rstartbs; 434 cstart = c->cstartbs; 435 ai = a->i; 436 aj = a->j; 437 bi = b->i; 438 bj = b->j; 439 garray = c->garray; 440 441 442 for (i=0,ct=0,total_sz=0; i<nrqr; ++i) { 443 rbuf_i = rbuf[i]; 444 rbuf_0 = rbuf_i[0]; 445 ct += rbuf_0; 446 for (j=1; j<=rbuf_0; j++) { total_sz += rbuf_i[2*j]; } 447 } 448 449 if (c->Mbs) max1 = ct*(a->nz +b->nz)/c->Mbs; 450 else max1 = 1; 451 mem_estimate = 3*((total_sz > max1 ? total_sz : max1)+1); 452 ierr = PetscMalloc(mem_estimate*sizeof(PetscInt),&xdata[0]);CHKERRQ(ierr); 453 ++no_malloc; 454 ierr = PetscBTCreate(Mbs,&xtable);CHKERRQ(ierr); 455 ierr = PetscMemzero(isz1,nrqr*sizeof(PetscInt));CHKERRQ(ierr); 456 457 ct3 = 0; 458 for (i=0; i<nrqr; i++) { /* for easch mesg from proc i */ 459 rbuf_i = rbuf[i]; 460 rbuf_0 = rbuf_i[0]; 461 ct1 = 2*rbuf_0+1; 462 ct2 = ct1; 463 ct3 += ct1; 464 for (j=1; j<=rbuf_0; j++) { /* for each IS from proc i*/ 465 ierr = PetscBTMemzero(Mbs,xtable);CHKERRQ(ierr); 466 oct2 = ct2; 467 kmax = rbuf_i[2*j]; 468 for (k=0; k<kmax; k++,ct1++) { 469 row = rbuf_i[ct1]; 470 if (!PetscBTLookupSet(xtable,row)) { 471 if (!(ct3 < mem_estimate)) { 472 new_estimate = (PetscInt)(1.5*mem_estimate)+1; 473 ierr = PetscMalloc(new_estimate * sizeof(PetscInt),&tmp);CHKERRQ(ierr); 474 ierr = PetscMemcpy(tmp,xdata[0],mem_estimate*sizeof(PetscInt));CHKERRQ(ierr); 475 ierr = PetscFree(xdata[0]);CHKERRQ(ierr); 476 xdata[0] = tmp; 477 mem_estimate = new_estimate; ++no_malloc; 478 for (ctr=1; ctr<=i; ctr++) { xdata[ctr] = xdata[ctr-1] + isz1[ctr-1];} 479 } 480 xdata[i][ct2++] = row; 481 ct3++; 482 } 483 } 484 for (k=oct2,max2=ct2; k<max2; k++) { 485 row = xdata[i][k] - rstart; 486 start = ai[row]; 487 end = ai[row+1]; 488 for (l=start; l<end; l++) { 489 val = aj[l] + cstart; 490 if (!PetscBTLookupSet(xtable,val)) { 491 if (!(ct3 < mem_estimate)) { 492 new_estimate = (PetscInt)(1.5*mem_estimate)+1; 493 ierr = PetscMalloc(new_estimate * sizeof(PetscInt),&tmp);CHKERRQ(ierr); 494 ierr = PetscMemcpy(tmp,xdata[0],mem_estimate*sizeof(PetscInt));CHKERRQ(ierr); 495 ierr = PetscFree(xdata[0]);CHKERRQ(ierr); 496 xdata[0] = tmp; 497 mem_estimate = new_estimate; ++no_malloc; 498 for (ctr=1; ctr<=i; ctr++) { xdata[ctr] = xdata[ctr-1] + isz1[ctr-1];} 499 } 500 xdata[i][ct2++] = val; 501 ct3++; 502 } 503 } 504 start = bi[row]; 505 end = bi[row+1]; 506 for (l=start; l<end; l++) { 507 val = garray[bj[l]]; 508 if (!PetscBTLookupSet(xtable,val)) { 509 if (!(ct3 < mem_estimate)) { 510 new_estimate = (PetscInt)(1.5*mem_estimate)+1; 511 ierr = PetscMalloc(new_estimate * sizeof(PetscInt),&tmp);CHKERRQ(ierr); 512 ierr = PetscMemcpy(tmp,xdata[0],mem_estimate*sizeof(PetscInt));CHKERRQ(ierr); 513 ierr = PetscFree(xdata[0]);CHKERRQ(ierr); 514 xdata[0] = tmp; 515 mem_estimate = new_estimate; ++no_malloc; 516 for (ctr =1; ctr <=i; ctr++) { xdata[ctr] = xdata[ctr-1] + isz1[ctr-1];} 517 } 518 xdata[i][ct2++] = val; 519 ct3++; 520 } 521 } 522 } 523 /* Update the header*/ 524 xdata[i][2*j] = ct2 - oct2; /* Undo the vector isz1 and use only a var*/ 525 xdata[i][2*j-1] = rbuf_i[2*j-1]; 526 } 527 xdata[i][0] = rbuf_0; 528 xdata[i+1] = xdata[i] + ct2; 529 isz1[i] = ct2; /* size of each message */ 530 } 531 ierr = PetscBTDestroy(&xtable);CHKERRQ(ierr); 532 ierr = PetscInfo3(C,"Allocated %D bytes, required %D, no of mallocs = %D\n",mem_estimate,ct3,no_malloc);CHKERRQ(ierr); 533 PetscFunctionReturn(0); 534 } 535 536 #undef __FUNCT__ 537 #define __FUNCT__ "MatGetSubMatrices_MPIBAIJ" 538 PetscErrorCode MatGetSubMatrices_MPIBAIJ(Mat C,PetscInt ismax,const IS isrow[],const IS iscol[],MatReuse scall,Mat *submat[]) 539 { 540 IS *isrow_new,*iscol_new; 541 Mat_MPIBAIJ *c = (Mat_MPIBAIJ*)C->data; 542 PetscErrorCode ierr; 543 PetscInt nmax,nstages_local,nstages,i,pos,max_no,ncol,nrow,N=C->cmap->N,bs=C->rmap->bs; 544 PetscBool colflag,*allcolumns,*allrows; 545 546 PetscFunctionBegin; 547 /* Currently, unsorted column indices will result in inverted column indices in the resulting submatrices. */ 548 for (i = 0; i < ismax; ++i) { 549 PetscBool sorted; 550 ierr = ISSorted(iscol[i], &sorted);CHKERRQ(ierr); 551 if (!sorted) SETERRQ1(((PetscObject)iscol[i])->comm, PETSC_ERR_SUP, "Column index set %D not sorted", i); 552 } 553 /* The compression and expansion should be avoided. Doesn't point 554 out errors, might change the indices, hence buggey */ 555 ierr = PetscMalloc2(ismax+1,IS,&isrow_new,ismax+1,IS,&iscol_new);CHKERRQ(ierr); 556 ierr = ISCompressIndicesGeneral(N,C->rmap->n,bs,ismax,isrow,isrow_new);CHKERRQ(ierr); 557 ierr = ISCompressIndicesGeneral(N,C->cmap->n,bs,ismax,iscol,iscol_new);CHKERRQ(ierr); 558 559 /* Check for special case: each processor gets entire matrix columns */ 560 ierr = PetscMalloc2(ismax+1,PetscBool,&allcolumns,ismax+1,PetscBool,&allrows);CHKERRQ(ierr); 561 for (i=0; i<ismax; i++) { 562 ierr = ISIdentity(iscol[i],&colflag);CHKERRQ(ierr); 563 ierr = ISGetLocalSize(iscol[i],&ncol);CHKERRQ(ierr); 564 if (colflag && ncol == C->cmap->N) { 565 allcolumns[i] = PETSC_TRUE; 566 } else { 567 allcolumns[i] = PETSC_FALSE; 568 } 569 570 ierr = ISIdentity(isrow[i],&colflag);CHKERRQ(ierr); 571 ierr = ISGetLocalSize(isrow[i],&nrow);CHKERRQ(ierr); 572 if (colflag && nrow == C->rmap->N) { 573 allrows[i] = PETSC_TRUE; 574 } else { 575 allrows[i] = PETSC_FALSE; 576 } 577 } 578 579 /* Allocate memory to hold all the submatrices */ 580 if (scall != MAT_REUSE_MATRIX) { 581 ierr = PetscMalloc((ismax+1)*sizeof(Mat),submat);CHKERRQ(ierr); 582 } 583 /* Determine the number of stages through which submatrices are done */ 584 nmax = 20*1000000 / (c->Nbs * sizeof(PetscInt)); 585 if (!nmax) nmax = 1; 586 nstages_local = ismax/nmax + ((ismax % nmax)?1:0); 587 588 /* Make sure every processor loops through the nstages */ 589 ierr = MPI_Allreduce(&nstages_local,&nstages,1,MPIU_INT,MPI_MAX,((PetscObject)C)->comm);CHKERRQ(ierr); 590 for (i=0,pos=0; i<nstages; i++) { 591 if (pos+nmax <= ismax) max_no = nmax; 592 else if (pos == ismax) max_no = 0; 593 else max_no = ismax-pos; 594 ierr = MatGetSubMatrices_MPIBAIJ_local(C,max_no,isrow_new+pos,iscol_new+pos,scall,allrows+pos,allcolumns+pos,*submat+pos);CHKERRQ(ierr); 595 pos += max_no; 596 } 597 598 for (i=0; i<ismax; i++) { 599 ierr = ISDestroy(&isrow_new[i]);CHKERRQ(ierr); 600 ierr = ISDestroy(&iscol_new[i]);CHKERRQ(ierr); 601 } 602 ierr = PetscFree2(isrow_new,iscol_new);CHKERRQ(ierr); 603 ierr = PetscFree2(allcolumns,allrows);CHKERRQ(ierr); 604 PetscFunctionReturn(0); 605 } 606 607 #if defined (PETSC_USE_CTABLE) 608 #undef __FUNCT__ 609 #define __FUNCT__ "PetscGetProc" 610 PetscErrorCode PetscGetProc(const PetscInt row, const PetscMPIInt size, const PetscInt proc_gnode[], PetscMPIInt *rank) 611 { 612 PetscInt nGlobalNd = proc_gnode[size]; 613 PetscMPIInt fproc; 614 PetscErrorCode ierr; 615 616 PetscFunctionBegin; 617 ierr = PetscMPIIntCast((PetscInt)(((float)row * (float)size / (float)nGlobalNd + 0.5)),&fproc);CHKERRQ(ierr); 618 if (fproc > size) fproc = size; 619 while (row < proc_gnode[fproc] || row >= proc_gnode[fproc+1]) { 620 if (row < proc_gnode[fproc]) fproc--; 621 else fproc++; 622 } 623 *rank = fproc; 624 PetscFunctionReturn(0); 625 } 626 #endif 627 628 /* -------------------------------------------------------------------------*/ 629 /* This code is used for BAIJ and SBAIJ matrices (unfortunate dependency) */ 630 #undef __FUNCT__ 631 #define __FUNCT__ "MatGetSubMatrices_MPIBAIJ_local" 632 PetscErrorCode MatGetSubMatrices_MPIBAIJ_local(Mat C,PetscInt ismax,const IS isrow[],const IS iscol[],MatReuse scall,PetscBool *allrows,PetscBool *allcolumns,Mat *submats) 633 { 634 Mat_MPIBAIJ *c = (Mat_MPIBAIJ*)C->data; 635 Mat A = c->A; 636 Mat_SeqBAIJ *a = (Mat_SeqBAIJ*)A->data,*b = (Mat_SeqBAIJ*)c->B->data,*mat; 637 const PetscInt **irow,**icol,*irow_i; 638 PetscInt *nrow,*ncol,*w3,*w4,start; 639 PetscErrorCode ierr; 640 PetscMPIInt size,tag0,tag1,tag2,tag3,*w1,*w2,nrqr,idex,end,proc; 641 PetscInt **sbuf1,**sbuf2,rank,i,j,k,l,ct1,ct2,**rbuf1,row; 642 PetscInt nrqs,msz,**ptr,*req_size,*ctr,*pa,*tmp,tcol; 643 PetscInt **rbuf3,*req_source,**sbuf_aj,**rbuf2,max1,max2; 644 PetscInt **lens,is_no,ncols,*cols,mat_i,*mat_j,tmp2,jmax; 645 PetscInt ctr_j,*sbuf1_j,*sbuf_aj_i,*rbuf1_i,kmax,*lens_i; 646 PetscInt bs=C->rmap->bs,bs2=c->bs2,*a_j=a->j,*b_j=b->j,*cworkA,*cworkB; 647 PetscInt cstart = c->cstartbs,nzA,nzB,*a_i=a->i,*b_i=b->i,imark; 648 PetscInt *bmap = c->garray,ctmp,rstart=c->rstartbs; 649 MPI_Request *s_waits1,*r_waits1,*s_waits2,*r_waits2,*r_waits3,*s_waits3; 650 MPI_Status *r_status1,*r_status2,*s_status1,*s_status3,*s_status2,*r_status3; 651 MPI_Comm comm; 652 PetscBool flag; 653 PetscMPIInt *onodes1,*olengths1; 654 PetscBool ijonly=c->ijonly; /* private flag indicates only matrix data structures are requested */ 655 /* variables below are used for the matrix numerical values - case of !ijonly */ 656 MPI_Request *r_waits4,*s_waits4; 657 MPI_Status *r_status4,*s_status4; 658 MatScalar **rbuf4,**sbuf_aa,*vals,*mat_a = PETSC_NULL,*sbuf_aa_i,*vworkA = PETSC_NULL,*vworkB = PETSC_NULL; 659 MatScalar *a_a=a->a,*b_a=b->a; 660 661 #if defined (PETSC_USE_CTABLE) 662 PetscInt tt; 663 PetscTable *rmap,*cmap,rmap_i,cmap_i=PETSC_NULL; 664 #else 665 PetscInt **cmap,*cmap_i=PETSC_NULL,*rtable,*rmap_i,**rmap, Mbs = c->Mbs; 666 #endif 667 668 PetscFunctionBegin; 669 comm = ((PetscObject)C)->comm; 670 tag0 = ((PetscObject)C)->tag; 671 size = c->size; 672 rank = c->rank; 673 674 /* Get some new tags to keep the communication clean */ 675 ierr = PetscObjectGetNewTag((PetscObject)C,&tag1);CHKERRQ(ierr); 676 ierr = PetscObjectGetNewTag((PetscObject)C,&tag2);CHKERRQ(ierr); 677 ierr = PetscObjectGetNewTag((PetscObject)C,&tag3);CHKERRQ(ierr); 678 679 #if defined(PETSC_USE_CTABLE) 680 ierr = PetscMalloc4(ismax,const PetscInt*,&irow,ismax,const PetscInt*,&icol,ismax,PetscInt,&nrow,ismax,PetscInt,&ncol);CHKERRQ(ierr); 681 #else 682 ierr = PetscMalloc5(ismax,const PetscInt*,&irow,ismax,const PetscInt*,&icol,ismax,PetscInt,&nrow,ismax,PetscInt,&ncol,Mbs+1,PetscInt,&rtable);CHKERRQ(ierr); 683 /* Create hash table for the mapping :row -> proc*/ 684 for (i=0,j=0; i<size; i++) { 685 jmax = C->rmap->range[i+1]/bs; 686 for (; j<jmax; j++) { 687 rtable[j] = i; 688 } 689 } 690 #endif 691 692 for (i=0; i<ismax; i++) { 693 if (allrows[i]) { 694 irow[i] = PETSC_NULL; 695 nrow[i] = C->rmap->N/bs; 696 } else { 697 ierr = ISGetIndices(isrow[i],&irow[i]);CHKERRQ(ierr); 698 ierr = ISGetLocalSize(isrow[i],&nrow[i]);CHKERRQ(ierr); 699 } 700 701 if (allcolumns[i]) { 702 icol[i] = PETSC_NULL; 703 ncol[i] = C->cmap->N/bs; 704 } else { 705 ierr = ISGetIndices(iscol[i],&icol[i]);CHKERRQ(ierr); 706 ierr = ISGetLocalSize(iscol[i],&ncol[i]);CHKERRQ(ierr); 707 } 708 } 709 710 /* evaluate communication - mesg to who,length of mesg,and buffer space 711 required. Based on this, buffers are allocated, and data copied into them*/ 712 ierr = PetscMalloc4(size,PetscMPIInt,&w1,size,PetscMPIInt,&w2,size,PetscInt,&w3,size,PetscInt,&w4);CHKERRQ(ierr); 713 ierr = PetscMemzero(w1,size*sizeof(PetscMPIInt));CHKERRQ(ierr); 714 ierr = PetscMemzero(w2,size*sizeof(PetscMPIInt));CHKERRQ(ierr); 715 ierr = PetscMemzero(w3,size*sizeof(PetscInt));CHKERRQ(ierr); 716 for (i=0; i<ismax; i++) { 717 ierr = PetscMemzero(w4,size*sizeof(PetscInt));CHKERRQ(ierr); /* initialise work vector*/ 718 jmax = nrow[i]; 719 irow_i = irow[i]; 720 for (j=0; j<jmax; j++) { 721 if (allrows[i]) { 722 row = j; 723 } else { 724 row = irow_i[j]; 725 } 726 #if defined (PETSC_USE_CTABLE) 727 ierr = PetscGetProc(row,size,c->rangebs,&proc);CHKERRQ(ierr); 728 #else 729 proc = rtable[row]; 730 #endif 731 w4[proc]++; 732 } 733 for (j=0; j<size; j++) { 734 if (w4[j]) { w1[j] += w4[j]; w3[j]++;} 735 } 736 } 737 738 nrqs = 0; /* no of outgoing messages */ 739 msz = 0; /* total mesg length for all proc */ 740 w1[rank] = 0; /* no mesg sent to intself */ 741 w3[rank] = 0; 742 for (i=0; i<size; i++) { 743 if (w1[i]) { w2[i] = 1; nrqs++;} /* there exists a message to proc i */ 744 } 745 ierr = PetscMalloc((nrqs+1)*sizeof(PetscInt),&pa);CHKERRQ(ierr); /*(proc -array)*/ 746 for (i=0,j=0; i<size; i++) { 747 if (w1[i]) { pa[j] = i; j++; } 748 } 749 750 /* Each message would have a header = 1 + 2*(no of IS) + data */ 751 for (i=0; i<nrqs; i++) { 752 j = pa[i]; 753 w1[j] += w2[j] + 2* w3[j]; 754 msz += w1[j]; 755 } 756 757 /* Determine the number of messages to expect, their lengths, from from-ids */ 758 ierr = PetscGatherNumberOfMessages(comm,w2,w1,&nrqr);CHKERRQ(ierr); 759 ierr = PetscGatherMessageLengths(comm,nrqs,nrqr,w1,&onodes1,&olengths1);CHKERRQ(ierr); 760 761 /* Now post the Irecvs corresponding to these messages */ 762 ierr = PetscPostIrecvInt(comm,tag0,nrqr,onodes1,olengths1,&rbuf1,&r_waits1);CHKERRQ(ierr); 763 764 ierr = PetscFree(onodes1);CHKERRQ(ierr); 765 ierr = PetscFree(olengths1);CHKERRQ(ierr); 766 767 /* Allocate Memory for outgoing messages */ 768 ierr = PetscMalloc4(size,PetscInt*,&sbuf1,size,PetscInt*,&ptr,2*msz,PetscInt,&tmp,size,PetscInt,&ctr);CHKERRQ(ierr); 769 ierr = PetscMemzero(sbuf1,size*sizeof(PetscInt*));CHKERRQ(ierr); 770 ierr = PetscMemzero(ptr,size*sizeof(PetscInt*));CHKERRQ(ierr); 771 { 772 PetscInt *iptr = tmp,ict = 0; 773 for (i=0; i<nrqs; i++) { 774 j = pa[i]; 775 iptr += ict; 776 sbuf1[j] = iptr; 777 ict = w1[j]; 778 } 779 } 780 781 /* Form the outgoing messages */ 782 /* Initialise the header space */ 783 for (i=0; i<nrqs; i++) { 784 j = pa[i]; 785 sbuf1[j][0] = 0; 786 ierr = PetscMemzero(sbuf1[j]+1,2*w3[j]*sizeof(PetscInt));CHKERRQ(ierr); 787 ptr[j] = sbuf1[j] + 2*w3[j] + 1; 788 } 789 790 /* Parse the isrow and copy data into outbuf */ 791 for (i=0; i<ismax; i++) { 792 ierr = PetscMemzero(ctr,size*sizeof(PetscInt));CHKERRQ(ierr); 793 irow_i = irow[i]; 794 jmax = nrow[i]; 795 for (j=0; j<jmax; j++) { /* parse the indices of each IS */ 796 if (allrows[i]) { 797 row = j; 798 } else { 799 row = irow_i[j]; 800 } 801 #if defined (PETSC_USE_CTABLE) 802 ierr = PetscGetProc(row,size,c->rangebs,&proc);CHKERRQ(ierr); 803 #else 804 proc = rtable[row]; 805 #endif 806 if (proc != rank) { /* copy to the outgoing buf*/ 807 ctr[proc]++; 808 *ptr[proc] = row; 809 ptr[proc]++; 810 } 811 } 812 /* Update the headers for the current IS */ 813 for (j=0; j<size; j++) { /* Can Optimise this loop too */ 814 if ((ctr_j = ctr[j])) { 815 sbuf1_j = sbuf1[j]; 816 k = ++sbuf1_j[0]; 817 sbuf1_j[2*k] = ctr_j; 818 sbuf1_j[2*k-1] = i; 819 } 820 } 821 } 822 823 /* Now post the sends */ 824 ierr = PetscMalloc((nrqs+1)*sizeof(MPI_Request),&s_waits1);CHKERRQ(ierr); 825 for (i=0; i<nrqs; ++i) { 826 j = pa[i]; 827 ierr = MPI_Isend(sbuf1[j],w1[j],MPIU_INT,j,tag0,comm,s_waits1+i);CHKERRQ(ierr); 828 } 829 830 /* Post Recieves to capture the buffer size */ 831 ierr = PetscMalloc((nrqs+1)*sizeof(MPI_Request),&r_waits2);CHKERRQ(ierr); 832 ierr = PetscMalloc((nrqs+1)*sizeof(PetscInt*),&rbuf2);CHKERRQ(ierr); 833 rbuf2[0] = tmp + msz; 834 for (i=1; i<nrqs; ++i) { 835 j = pa[i]; 836 rbuf2[i] = rbuf2[i-1]+w1[pa[i-1]]; 837 } 838 for (i=0; i<nrqs; ++i) { 839 j = pa[i]; 840 ierr = MPI_Irecv(rbuf2[i],w1[j],MPIU_INT,j,tag1,comm,r_waits2+i);CHKERRQ(ierr); 841 } 842 843 /* Send to other procs the buf size they should allocate */ 844 845 /* Receive messages*/ 846 ierr = PetscMalloc((nrqr+1)*sizeof(MPI_Request),&s_waits2);CHKERRQ(ierr); 847 ierr = PetscMalloc((nrqr+1)*sizeof(MPI_Status),&r_status1);CHKERRQ(ierr); 848 ierr = PetscMalloc3(nrqr+1,PetscInt*,&sbuf2,nrqr,PetscInt,&req_size,nrqr,PetscInt,&req_source);CHKERRQ(ierr); 849 { 850 Mat_SeqBAIJ *sA = (Mat_SeqBAIJ*)c->A->data,*sB = (Mat_SeqBAIJ*)c->B->data; 851 PetscInt *sAi = sA->i,*sBi = sB->i,id,*sbuf2_i; 852 853 for (i=0; i<nrqr; ++i) { 854 ierr = MPI_Waitany(nrqr,r_waits1,&idex,r_status1+i);CHKERRQ(ierr); 855 req_size[idex] = 0; 856 rbuf1_i = rbuf1[idex]; 857 start = 2*rbuf1_i[0] + 1; 858 ierr = MPI_Get_count(r_status1+i,MPIU_INT,&end);CHKERRQ(ierr); 859 ierr = PetscMalloc(end*sizeof(PetscInt),&sbuf2[idex]);CHKERRQ(ierr); 860 sbuf2_i = sbuf2[idex]; 861 for (j=start; j<end; j++) { 862 id = rbuf1_i[j] - rstart; 863 ncols = sAi[id+1] - sAi[id] + sBi[id+1] - sBi[id]; 864 sbuf2_i[j] = ncols; 865 req_size[idex] += ncols; 866 } 867 req_source[idex] = r_status1[i].MPI_SOURCE; 868 /* form the header */ 869 sbuf2_i[0] = req_size[idex]; 870 for (j=1; j<start; j++) { sbuf2_i[j] = rbuf1_i[j]; } 871 ierr = MPI_Isend(sbuf2_i,end,MPIU_INT,req_source[idex],tag1,comm,s_waits2+i);CHKERRQ(ierr); 872 } 873 } 874 ierr = PetscFree(r_status1);CHKERRQ(ierr); 875 ierr = PetscFree(r_waits1);CHKERRQ(ierr); 876 877 /* recv buffer sizes */ 878 /* Receive messages*/ 879 ierr = PetscMalloc((nrqs+1)*sizeof(PetscInt*),&rbuf3);CHKERRQ(ierr); 880 ierr = PetscMalloc((nrqs+1)*sizeof(MPI_Request),&r_waits3);CHKERRQ(ierr); 881 ierr = PetscMalloc((nrqs+1)*sizeof(MPI_Status),&r_status2);CHKERRQ(ierr); 882 if (!ijonly) { 883 ierr = PetscMalloc((nrqs+1)*sizeof(MatScalar*),&rbuf4);CHKERRQ(ierr); 884 ierr = PetscMalloc((nrqs+1)*sizeof(MPI_Request),&r_waits4);CHKERRQ(ierr); 885 } 886 887 for (i=0; i<nrqs; ++i) { 888 ierr = MPI_Waitany(nrqs,r_waits2,&idex,r_status2+i);CHKERRQ(ierr); 889 ierr = PetscMalloc(rbuf2[idex][0]*sizeof(PetscInt),&rbuf3[idex]);CHKERRQ(ierr); 890 ierr = MPI_Irecv(rbuf3[idex],rbuf2[idex][0],MPIU_INT,r_status2[i].MPI_SOURCE,tag2,comm,r_waits3+idex);CHKERRQ(ierr); 891 if (!ijonly) { 892 ierr = PetscMalloc(rbuf2[idex][0]*bs2*sizeof(MatScalar),&rbuf4[idex]);CHKERRQ(ierr); 893 ierr = MPI_Irecv(rbuf4[idex],rbuf2[idex][0]*bs2,MPIU_MATSCALAR,r_status2[i].MPI_SOURCE,tag3,comm,r_waits4+idex);CHKERRQ(ierr); 894 } 895 } 896 ierr = PetscFree(r_status2);CHKERRQ(ierr); 897 ierr = PetscFree(r_waits2);CHKERRQ(ierr); 898 899 /* Wait on sends1 and sends2 */ 900 ierr = PetscMalloc((nrqs+1)*sizeof(MPI_Status),&s_status1);CHKERRQ(ierr); 901 ierr = PetscMalloc((nrqr+1)*sizeof(MPI_Status),&s_status2);CHKERRQ(ierr); 902 903 if (nrqs) {ierr = MPI_Waitall(nrqs,s_waits1,s_status1);CHKERRQ(ierr);} 904 if (nrqr) {ierr = MPI_Waitall(nrqr,s_waits2,s_status2);CHKERRQ(ierr);} 905 ierr = PetscFree(s_status1);CHKERRQ(ierr); 906 ierr = PetscFree(s_status2);CHKERRQ(ierr); 907 ierr = PetscFree(s_waits1);CHKERRQ(ierr); 908 ierr = PetscFree(s_waits2);CHKERRQ(ierr); 909 910 /* Now allocate buffers for a->j, and send them off */ 911 ierr = PetscMalloc((nrqr+1)*sizeof(PetscInt*),&sbuf_aj);CHKERRQ(ierr); 912 for (i=0,j=0; i<nrqr; i++) j += req_size[i]; 913 ierr = PetscMalloc((j+1)*sizeof(PetscInt),&sbuf_aj[0]);CHKERRQ(ierr); 914 for (i=1; i<nrqr; i++) sbuf_aj[i] = sbuf_aj[i-1] + req_size[i-1]; 915 916 ierr = PetscMalloc((nrqr+1)*sizeof(MPI_Request),&s_waits3);CHKERRQ(ierr); 917 { 918 for (i=0; i<nrqr; i++) { 919 rbuf1_i = rbuf1[i]; 920 sbuf_aj_i = sbuf_aj[i]; 921 ct1 = 2*rbuf1_i[0] + 1; 922 ct2 = 0; 923 for (j=1,max1=rbuf1_i[0]; j<=max1; j++) { 924 kmax = rbuf1[i][2*j]; 925 for (k=0; k<kmax; k++,ct1++) { 926 row = rbuf1_i[ct1] - rstart; 927 nzA = a_i[row+1] - a_i[row]; nzB = b_i[row+1] - b_i[row]; 928 ncols = nzA + nzB; 929 cworkA = a_j + a_i[row]; cworkB = b_j + b_i[row]; 930 931 /* load the column indices for this row into cols*/ 932 cols = sbuf_aj_i + ct2; 933 for (l=0; l<nzB; l++) { 934 if ((ctmp = bmap[cworkB[l]]) < cstart) cols[l] = ctmp; 935 else break; 936 } 937 imark = l; 938 for (l=0; l<nzA; l++) cols[imark+l] = cstart + cworkA[l]; 939 for (l=imark; l<nzB; l++) cols[nzA+l] = bmap[cworkB[l]]; 940 ct2 += ncols; 941 } 942 } 943 ierr = MPI_Isend(sbuf_aj_i,req_size[i],MPIU_INT,req_source[i],tag2,comm,s_waits3+i);CHKERRQ(ierr); 944 } 945 } 946 ierr = PetscMalloc((nrqs+1)*sizeof(MPI_Status),&r_status3);CHKERRQ(ierr); 947 ierr = PetscMalloc((nrqr+1)*sizeof(MPI_Status),&s_status3);CHKERRQ(ierr); 948 949 /* Allocate buffers for a->a, and send them off */ 950 if (!ijonly) { 951 ierr = PetscMalloc((nrqr+1)*sizeof(MatScalar *),&sbuf_aa);CHKERRQ(ierr); 952 for (i=0,j=0; i<nrqr; i++) j += req_size[i]; 953 ierr = PetscMalloc((j+1)*bs2*sizeof(MatScalar),&sbuf_aa[0]);CHKERRQ(ierr); 954 for (i=1; i<nrqr; i++) sbuf_aa[i] = sbuf_aa[i-1] + req_size[i-1]*bs2; 955 956 ierr = PetscMalloc((nrqr+1)*sizeof(MPI_Request),&s_waits4);CHKERRQ(ierr); 957 { 958 for (i=0; i<nrqr; i++) { 959 rbuf1_i = rbuf1[i]; 960 sbuf_aa_i = sbuf_aa[i]; 961 ct1 = 2*rbuf1_i[0]+1; 962 ct2 = 0; 963 for (j=1,max1=rbuf1_i[0]; j<=max1; j++) { 964 kmax = rbuf1_i[2*j]; 965 for (k=0; k<kmax; k++,ct1++) { 966 row = rbuf1_i[ct1] - rstart; 967 nzA = a_i[row+1] - a_i[row]; nzB = b_i[row+1] - b_i[row]; 968 ncols = nzA + nzB; 969 cworkA = a_j + a_i[row]; cworkB = b_j + b_i[row]; 970 vworkA = a_a + a_i[row]*bs2; vworkB = b_a + b_i[row]*bs2; 971 972 /* load the column values for this row into vals*/ 973 vals = sbuf_aa_i+ct2*bs2; 974 for (l=0; l<nzB; l++) { 975 if ((bmap[cworkB[l]]) < cstart) { 976 ierr = PetscMemcpy(vals+l*bs2,vworkB+l*bs2,bs2*sizeof(MatScalar));CHKERRQ(ierr); 977 } 978 else break; 979 } 980 imark = l; 981 for (l=0; l<nzA; l++) { 982 ierr = PetscMemcpy(vals+(imark+l)*bs2,vworkA+l*bs2,bs2*sizeof(MatScalar));CHKERRQ(ierr); 983 } 984 for (l=imark; l<nzB; l++) { 985 ierr = PetscMemcpy(vals+(nzA+l)*bs2,vworkB+l*bs2,bs2*sizeof(MatScalar));CHKERRQ(ierr); 986 } 987 ct2 += ncols; 988 } 989 } 990 ierr = MPI_Isend(sbuf_aa_i,req_size[i]*bs2,MPIU_MATSCALAR,req_source[i],tag3,comm,s_waits4+i);CHKERRQ(ierr); 991 } 992 } 993 ierr = PetscMalloc((nrqs+1)*sizeof(MPI_Status),&r_status4);CHKERRQ(ierr); 994 ierr = PetscMalloc((nrqr+1)*sizeof(MPI_Status),&s_status4);CHKERRQ(ierr); 995 } 996 ierr = PetscFree(rbuf1[0]);CHKERRQ(ierr); 997 ierr = PetscFree(rbuf1);CHKERRQ(ierr); 998 999 /* Form the matrix */ 1000 /* create col map: global col of C -> local col of submatrices */ 1001 { 1002 const PetscInt *icol_i; 1003 #if defined (PETSC_USE_CTABLE) 1004 ierr = PetscMalloc((1+ismax)*sizeof(PetscTable),&cmap);CHKERRQ(ierr); 1005 for (i=0; i<ismax; i++) { 1006 if (!allcolumns[i]) { 1007 ierr = PetscTableCreate(ncol[i]+1,c->Nbs+1,&cmap[i]);CHKERRQ(ierr); 1008 jmax = ncol[i]; 1009 icol_i = icol[i]; 1010 cmap_i = cmap[i]; 1011 for (j=0; j<jmax; j++) { 1012 ierr = PetscTableAdd(cmap_i,icol_i[j]+1,j+1,INSERT_VALUES);CHKERRQ(ierr); 1013 } 1014 } else { 1015 cmap[i] = PETSC_NULL; 1016 } 1017 } 1018 #else 1019 ierr = PetscMalloc(ismax*sizeof(PetscInt*),&cmap);CHKERRQ(ierr); 1020 for (i=0; i<ismax; i++) { 1021 if (!allcolumns[i]) { 1022 ierr = PetscMalloc(c->Nbs*sizeof(PetscInt),&cmap[i]);CHKERRQ(ierr); 1023 ierr = PetscMemzero(cmap[i],c->Nbs*sizeof(PetscInt));CHKERRQ(ierr); 1024 jmax = ncol[i]; 1025 icol_i = icol[i]; 1026 cmap_i = cmap[i]; 1027 for (j=0; j<jmax; j++) { 1028 cmap_i[icol_i[j]] = j+1; 1029 } 1030 } else { /* allcolumns[i] */ 1031 cmap[i] = PETSC_NULL; 1032 } 1033 } 1034 #endif 1035 } 1036 1037 /* Create lens which is required for MatCreate... */ 1038 for (i=0,j=0; i<ismax; i++) { j += nrow[i]; } 1039 ierr = PetscMalloc((1+ismax)*sizeof(PetscInt*)+ j*sizeof(PetscInt),&lens);CHKERRQ(ierr); 1040 lens[0] = (PetscInt*)(lens + ismax); 1041 ierr = PetscMemzero(lens[0],j*sizeof(PetscInt));CHKERRQ(ierr); 1042 for (i=1; i<ismax; i++) { lens[i] = lens[i-1] + nrow[i-1]; } 1043 1044 /* Update lens from local data */ 1045 for (i=0; i<ismax; i++) { 1046 jmax = nrow[i]; 1047 if (!allcolumns[i]) cmap_i = cmap[i]; 1048 irow_i = irow[i]; 1049 lens_i = lens[i]; 1050 for (j=0; j<jmax; j++) { 1051 if (allrows[i]) { 1052 row = j; 1053 } else { 1054 row = irow_i[j]; 1055 } 1056 #if defined (PETSC_USE_CTABLE) 1057 ierr = PetscGetProc(row,size,c->rangebs,&proc);CHKERRQ(ierr); 1058 #else 1059 proc = rtable[row]; 1060 #endif 1061 if (proc == rank) { 1062 /* Get indices from matA and then from matB */ 1063 row = row - rstart; 1064 nzA = a_i[row+1] - a_i[row]; nzB = b_i[row+1] - b_i[row]; 1065 cworkA = a_j + a_i[row]; cworkB = b_j + b_i[row]; 1066 if (!allcolumns[i]) { 1067 #if defined (PETSC_USE_CTABLE) 1068 for (k=0; k<nzA; k++) { 1069 ierr = PetscTableFind(cmap_i,cstart+cworkA[k]+1,&tt);CHKERRQ(ierr); 1070 if (tt) { lens_i[j]++; } 1071 } 1072 for (k=0; k<nzB; k++) { 1073 ierr = PetscTableFind(cmap_i,bmap[cworkB[k]]+1,&tt);CHKERRQ(ierr); 1074 if (tt) { lens_i[j]++; } 1075 } 1076 1077 #else 1078 for (k=0; k<nzA; k++) { 1079 if (cmap_i[cstart + cworkA[k]]) { lens_i[j]++; } 1080 } 1081 for (k=0; k<nzB; k++) { 1082 if (cmap_i[bmap[cworkB[k]]]) { lens_i[j]++; } 1083 } 1084 #endif 1085 } else {/* allcolumns */ 1086 lens_i[j] = nzA + nzB; 1087 } 1088 } 1089 } 1090 } 1091 #if defined (PETSC_USE_CTABLE) 1092 /* Create row map*/ 1093 ierr = PetscMalloc((1+ismax)*sizeof(PetscTable),&rmap);CHKERRQ(ierr); 1094 for (i=0; i<ismax; i++) { 1095 ierr = PetscTableCreate(nrow[i]+1,c->Mbs+1,&rmap[i]);CHKERRQ(ierr); 1096 } 1097 #else 1098 /* Create row map*/ 1099 ierr = PetscMalloc((1+ismax)*sizeof(PetscInt*)+ ismax*Mbs*sizeof(PetscInt),&rmap);CHKERRQ(ierr); 1100 rmap[0] = (PetscInt*)(rmap + ismax); 1101 ierr = PetscMemzero(rmap[0],ismax*Mbs*sizeof(PetscInt));CHKERRQ(ierr); 1102 for (i=1; i<ismax; i++) { rmap[i] = rmap[i-1] + Mbs;} 1103 #endif 1104 for (i=0; i<ismax; i++) { 1105 irow_i = irow[i]; 1106 jmax = nrow[i]; 1107 #if defined (PETSC_USE_CTABLE) 1108 rmap_i = rmap[i]; 1109 for (j=0; j<jmax; j++) { 1110 if (allrows[i]) { 1111 ierr = PetscTableAdd(rmap_i,j+1,j+1,INSERT_VALUES);CHKERRQ(ierr); 1112 } else { 1113 ierr = PetscTableAdd(rmap_i,irow_i[j]+1,j+1,INSERT_VALUES);CHKERRQ(ierr); 1114 } 1115 } 1116 #else 1117 rmap_i = rmap[i]; 1118 for (j=0; j<jmax; j++) { 1119 if (allrows[i]) { 1120 rmap_i[j] = j; 1121 } else { 1122 rmap_i[irow_i[j]] = j; 1123 } 1124 } 1125 #endif 1126 } 1127 1128 /* Update lens from offproc data */ 1129 { 1130 PetscInt *rbuf2_i,*rbuf3_i,*sbuf1_i; 1131 PetscMPIInt ii; 1132 1133 for (tmp2=0; tmp2<nrqs; tmp2++) { 1134 ierr = MPI_Waitany(nrqs,r_waits3,&ii,r_status3+tmp2);CHKERRQ(ierr); 1135 idex = pa[ii]; 1136 sbuf1_i = sbuf1[idex]; 1137 jmax = sbuf1_i[0]; 1138 ct1 = 2*jmax+1; 1139 ct2 = 0; 1140 rbuf2_i = rbuf2[ii]; 1141 rbuf3_i = rbuf3[ii]; 1142 for (j=1; j<=jmax; j++) { 1143 is_no = sbuf1_i[2*j-1]; 1144 max1 = sbuf1_i[2*j]; 1145 lens_i = lens[is_no]; 1146 if (!allcolumns[is_no]) cmap_i = cmap[is_no]; 1147 rmap_i = rmap[is_no]; 1148 for (k=0; k<max1; k++,ct1++) { 1149 #if defined (PETSC_USE_CTABLE) 1150 ierr = PetscTableFind(rmap_i,sbuf1_i[ct1]+1,&row);CHKERRQ(ierr); 1151 row--; 1152 if (row < 0) { SETERRQ(PETSC_COMM_SELF,PETSC_ERR_PLIB,"row not found in table"); } 1153 #else 1154 row = rmap_i[sbuf1_i[ct1]]; /* the val in the new matrix to be */ 1155 #endif 1156 max2 = rbuf2_i[ct1]; 1157 for (l=0; l<max2; l++,ct2++) { 1158 if (!allcolumns[is_no]) { 1159 #if defined (PETSC_USE_CTABLE) 1160 ierr = PetscTableFind(cmap_i,rbuf3_i[ct2]+1,&tt);CHKERRQ(ierr); 1161 if (tt) { 1162 lens_i[row]++; 1163 } 1164 #else 1165 if (cmap_i[rbuf3_i[ct2]]) { 1166 lens_i[row]++; 1167 } 1168 #endif 1169 } else { /* allcolumns */ 1170 lens_i[row]++; 1171 } 1172 } 1173 } 1174 } 1175 } 1176 } 1177 ierr = PetscFree(r_status3);CHKERRQ(ierr); 1178 ierr = PetscFree(r_waits3);CHKERRQ(ierr); 1179 if (nrqr) {ierr = MPI_Waitall(nrqr,s_waits3,s_status3);CHKERRQ(ierr);} 1180 ierr = PetscFree(s_status3);CHKERRQ(ierr); 1181 ierr = PetscFree(s_waits3);CHKERRQ(ierr); 1182 1183 /* Create the submatrices */ 1184 if (scall == MAT_REUSE_MATRIX) { 1185 if (ijonly) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP," MAT_REUSE_MATRIX and ijonly is not supported yet"); 1186 /* 1187 Assumes new rows are same length as the old rows, hence bug! 1188 */ 1189 for (i=0; i<ismax; i++) { 1190 mat = (Mat_SeqBAIJ *)(submats[i]->data); 1191 if ((mat->mbs != nrow[i]) || (mat->nbs != ncol[i] || C->rmap->bs != bs)) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_SIZ,"Cannot reuse matrix. wrong size"); 1192 ierr = PetscMemcmp(mat->ilen,lens[i],mat->mbs *sizeof(PetscInt),&flag);CHKERRQ(ierr); 1193 if (!flag) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_INCOMP,"Cannot reuse matrix. wrong no of nonzeros"); 1194 /* Initial matrix as if empty */ 1195 ierr = PetscMemzero(mat->ilen,mat->mbs*sizeof(PetscInt));CHKERRQ(ierr); 1196 submats[i]->factortype = C->factortype; 1197 } 1198 } else { 1199 PetscInt bs_tmp; 1200 if (ijonly) { 1201 bs_tmp = 1; 1202 } else { 1203 bs_tmp = bs; 1204 } 1205 for (i=0; i<ismax; i++) { 1206 ierr = MatCreate(PETSC_COMM_SELF,submats+i);CHKERRQ(ierr); 1207 ierr = MatSetSizes(submats[i],nrow[i]*bs_tmp,ncol[i]*bs_tmp,nrow[i]*bs_tmp,ncol[i]*bs_tmp);CHKERRQ(ierr); 1208 ierr = MatSetType(submats[i],((PetscObject)A)->type_name);CHKERRQ(ierr); 1209 ierr = MatSeqBAIJSetPreallocation(submats[i],bs_tmp,0,lens[i]);CHKERRQ(ierr); 1210 ierr = MatSeqSBAIJSetPreallocation(submats[i],bs_tmp,0,lens[i]);CHKERRQ(ierr); /* this subroutine is used by SBAIJ routines */ 1211 } 1212 } 1213 1214 /* Assemble the matrices */ 1215 /* First assemble the local rows */ 1216 { 1217 PetscInt ilen_row,*imat_ilen,*imat_j,*imat_i; 1218 MatScalar *imat_a = PETSC_NULL; 1219 1220 for (i=0; i<ismax; i++) { 1221 mat = (Mat_SeqBAIJ*)submats[i]->data; 1222 imat_ilen = mat->ilen; 1223 imat_j = mat->j; 1224 imat_i = mat->i; 1225 if (!ijonly) imat_a = mat->a; 1226 if (!allcolumns[i]) cmap_i = cmap[i]; 1227 rmap_i = rmap[i]; 1228 irow_i = irow[i]; 1229 jmax = nrow[i]; 1230 for (j=0; j<jmax; j++) { 1231 if (allrows[i]) { 1232 row = j; 1233 } else { 1234 row = irow_i[j]; 1235 } 1236 #if defined (PETSC_USE_CTABLE) 1237 ierr = PetscGetProc(row,size,c->rangebs,&proc);CHKERRQ(ierr); 1238 #else 1239 proc = rtable[row]; 1240 #endif 1241 if (proc == rank) { 1242 row = row - rstart; 1243 nzA = a_i[row+1] - a_i[row]; 1244 nzB = b_i[row+1] - b_i[row]; 1245 cworkA = a_j + a_i[row]; 1246 cworkB = b_j + b_i[row]; 1247 if (!ijonly) { 1248 vworkA = a_a + a_i[row]*bs2; 1249 vworkB = b_a + b_i[row]*bs2; 1250 } 1251 #if defined (PETSC_USE_CTABLE) 1252 ierr = PetscTableFind(rmap_i,row+rstart+1,&row);CHKERRQ(ierr); 1253 row--; 1254 if (row < 0) { SETERRQ(PETSC_COMM_SELF,PETSC_ERR_PLIB,"row not found in table"); } 1255 #else 1256 row = rmap_i[row + rstart]; 1257 #endif 1258 mat_i = imat_i[row]; 1259 if (!ijonly) mat_a = imat_a + mat_i*bs2; 1260 mat_j = imat_j + mat_i; 1261 ilen_row = imat_ilen[row]; 1262 1263 /* load the column indices for this row into cols*/ 1264 if (!allcolumns[i]) { 1265 for (l=0; l<nzB; l++) { 1266 if ((ctmp = bmap[cworkB[l]]) < cstart) { 1267 #if defined (PETSC_USE_CTABLE) 1268 ierr = PetscTableFind(cmap_i,ctmp+1,&tcol);CHKERRQ(ierr); 1269 if (tcol) { 1270 #else 1271 if ((tcol = cmap_i[ctmp])) { 1272 #endif 1273 *mat_j++ = tcol - 1; 1274 ierr = PetscMemcpy(mat_a,vworkB+l*bs2,bs2*sizeof(MatScalar));CHKERRQ(ierr); 1275 mat_a += bs2; 1276 ilen_row++; 1277 } 1278 } else break; 1279 } 1280 imark = l; 1281 for (l=0; l<nzA; l++) { 1282 #if defined (PETSC_USE_CTABLE) 1283 ierr = PetscTableFind(cmap_i,cstart+cworkA[l]+1,&tcol);CHKERRQ(ierr); 1284 if (tcol) { 1285 #else 1286 if ((tcol = cmap_i[cstart + cworkA[l]])) { 1287 #endif 1288 *mat_j++ = tcol - 1; 1289 if (!ijonly) { 1290 ierr = PetscMemcpy(mat_a,vworkA+l*bs2,bs2*sizeof(MatScalar));CHKERRQ(ierr); 1291 mat_a += bs2; 1292 } 1293 ilen_row++; 1294 } 1295 } 1296 for (l=imark; l<nzB; l++) { 1297 #if defined (PETSC_USE_CTABLE) 1298 ierr = PetscTableFind(cmap_i,bmap[cworkB[l]]+1,&tcol);CHKERRQ(ierr); 1299 if (tcol) { 1300 #else 1301 if ((tcol = cmap_i[bmap[cworkB[l]]])) { 1302 #endif 1303 *mat_j++ = tcol - 1; 1304 if (!ijonly) { 1305 ierr = PetscMemcpy(mat_a,vworkB+l*bs2,bs2*sizeof(MatScalar));CHKERRQ(ierr); 1306 mat_a += bs2; 1307 } 1308 ilen_row++; 1309 } 1310 } 1311 } else { /* allcolumns */ 1312 for (l=0; l<nzB; l++) { 1313 if ((ctmp = bmap[cworkB[l]]) < cstart) { 1314 *mat_j++ = ctmp; 1315 ierr = PetscMemcpy(mat_a,vworkB+l*bs2,bs2*sizeof(MatScalar));CHKERRQ(ierr); 1316 mat_a += bs2; 1317 ilen_row++; 1318 } else break; 1319 } 1320 imark = l; 1321 for (l=0; l<nzA; l++) { 1322 *mat_j++ = cstart+cworkA[l]; 1323 if (!ijonly) { 1324 ierr = PetscMemcpy(mat_a,vworkA+l*bs2,bs2*sizeof(MatScalar));CHKERRQ(ierr); 1325 mat_a += bs2; 1326 } 1327 ilen_row++; 1328 } 1329 for (l=imark; l<nzB; l++) { 1330 *mat_j++ = bmap[cworkB[l]]; 1331 if (!ijonly) { 1332 ierr = PetscMemcpy(mat_a,vworkB+l*bs2,bs2*sizeof(MatScalar));CHKERRQ(ierr); 1333 mat_a += bs2; 1334 } 1335 ilen_row++; 1336 } 1337 } 1338 imat_ilen[row] = ilen_row; 1339 } 1340 } 1341 } 1342 } 1343 1344 /* Now assemble the off proc rows*/ 1345 { 1346 PetscInt *sbuf1_i,*rbuf2_i,*rbuf3_i,*imat_ilen,ilen; 1347 PetscInt *imat_j,*imat_i; 1348 MatScalar *imat_a = PETSC_NULL,*rbuf4_i = PETSC_NULL; 1349 PetscMPIInt ii; 1350 1351 for (tmp2=0; tmp2<nrqs; tmp2++) { 1352 if (ijonly) { 1353 ii = tmp2; 1354 } else { 1355 ierr = MPI_Waitany(nrqs,r_waits4,&ii,r_status4+tmp2);CHKERRQ(ierr); 1356 } 1357 idex = pa[ii]; 1358 sbuf1_i = sbuf1[idex]; 1359 jmax = sbuf1_i[0]; 1360 ct1 = 2*jmax + 1; 1361 ct2 = 0; 1362 rbuf2_i = rbuf2[ii]; 1363 rbuf3_i = rbuf3[ii]; 1364 if (!ijonly) rbuf4_i = rbuf4[ii]; 1365 for (j=1; j<=jmax; j++) { 1366 is_no = sbuf1_i[2*j-1]; 1367 if (!allcolumns[is_no]) cmap_i = cmap[is_no]; 1368 rmap_i = rmap[is_no]; 1369 mat = (Mat_SeqBAIJ*)submats[is_no]->data; 1370 imat_ilen = mat->ilen; 1371 imat_j = mat->j; 1372 imat_i = mat->i; 1373 if (!ijonly) imat_a = mat->a; 1374 max1 = sbuf1_i[2*j]; 1375 for (k=0; k<max1; k++,ct1++) { 1376 row = sbuf1_i[ct1]; 1377 #if defined (PETSC_USE_CTABLE) 1378 ierr = PetscTableFind(rmap_i,row+1,&row);CHKERRQ(ierr); 1379 row--; 1380 if (row < 0) { SETERRQ(PETSC_COMM_SELF,PETSC_ERR_PLIB,"row not found in table"); } 1381 #else 1382 row = rmap_i[row]; 1383 #endif 1384 ilen = imat_ilen[row]; 1385 mat_i = imat_i[row]; 1386 if (!ijonly) mat_a = imat_a + mat_i*bs2; 1387 mat_j = imat_j + mat_i; 1388 max2 = rbuf2_i[ct1]; 1389 1390 if (!allcolumns[is_no]) { 1391 for (l=0; l<max2; l++,ct2++) { 1392 #if defined (PETSC_USE_CTABLE) 1393 ierr = PetscTableFind(cmap_i,rbuf3_i[ct2]+1,&tcol);CHKERRQ(ierr); 1394 if (tcol) { 1395 #else 1396 if ((tcol = cmap_i[rbuf3_i[ct2]])) { 1397 #endif 1398 *mat_j++ = tcol - 1; 1399 if (!ijonly) { 1400 ierr = PetscMemcpy(mat_a,rbuf4_i+ct2*bs2,bs2*sizeof(MatScalar));CHKERRQ(ierr); 1401 mat_a += bs2; 1402 } 1403 ilen++; 1404 } 1405 } 1406 } else { /* allcolumns */ 1407 for (l=0; l<max2; l++,ct2++) { 1408 *mat_j++ = rbuf3_i[ct2]; 1409 if (!ijonly) { 1410 ierr = PetscMemcpy(mat_a,rbuf4_i+ct2*bs2,bs2*sizeof(MatScalar));CHKERRQ(ierr); 1411 mat_a += bs2; 1412 } 1413 ilen++; 1414 } 1415 } 1416 imat_ilen[row] = ilen; 1417 } 1418 } 1419 } 1420 } 1421 if (!ijonly) { 1422 ierr = PetscFree(r_status4);CHKERRQ(ierr); 1423 ierr = PetscFree(r_waits4);CHKERRQ(ierr); 1424 if (nrqr) {ierr = MPI_Waitall(nrqr,s_waits4,s_status4);CHKERRQ(ierr);} 1425 ierr = PetscFree(s_waits4);CHKERRQ(ierr); 1426 ierr = PetscFree(s_status4);CHKERRQ(ierr); 1427 } 1428 1429 /* Restore the indices */ 1430 for (i=0; i<ismax; i++) { 1431 if (!allrows[i]) { 1432 ierr = ISRestoreIndices(isrow[i],irow+i);CHKERRQ(ierr); 1433 } 1434 if (!allcolumns[i]) { 1435 ierr = ISRestoreIndices(iscol[i],icol+i);CHKERRQ(ierr); 1436 } 1437 } 1438 1439 /* Destroy allocated memory */ 1440 #if defined(PETSC_USE_CTABLE) 1441 ierr = PetscFree4(irow,icol,nrow,ncol);CHKERRQ(ierr); 1442 #else 1443 ierr = PetscFree5(irow,icol,nrow,ncol,rtable);CHKERRQ(ierr); 1444 #endif 1445 ierr = PetscFree4(w1,w2,w3,w4);CHKERRQ(ierr); 1446 ierr = PetscFree(pa);CHKERRQ(ierr); 1447 1448 ierr = PetscFree4(sbuf1,ptr,tmp,ctr);CHKERRQ(ierr); 1449 ierr = PetscFree(sbuf1);CHKERRQ(ierr); 1450 ierr = PetscFree(rbuf2);CHKERRQ(ierr); 1451 for (i=0; i<nrqr; ++i) { 1452 ierr = PetscFree(sbuf2[i]);CHKERRQ(ierr); 1453 } 1454 for (i=0; i<nrqs; ++i) { 1455 ierr = PetscFree(rbuf3[i]);CHKERRQ(ierr); 1456 } 1457 ierr = PetscFree3(sbuf2,req_size,req_source);CHKERRQ(ierr); 1458 ierr = PetscFree(rbuf3);CHKERRQ(ierr); 1459 ierr = PetscFree(sbuf_aj[0]);CHKERRQ(ierr); 1460 ierr = PetscFree(sbuf_aj);CHKERRQ(ierr); 1461 if (!ijonly) { 1462 for (i=0; i<nrqs; ++i) {ierr = PetscFree(rbuf4[i]);CHKERRQ(ierr);} 1463 ierr = PetscFree(rbuf4);CHKERRQ(ierr); 1464 ierr = PetscFree(sbuf_aa[0]);CHKERRQ(ierr); 1465 ierr = PetscFree(sbuf_aa);CHKERRQ(ierr); 1466 } 1467 1468 #if defined (PETSC_USE_CTABLE) 1469 for (i=0; i<ismax; i++) { 1470 ierr = PetscTableDestroy((PetscTable*)&rmap[i]);CHKERRQ(ierr); 1471 } 1472 #endif 1473 ierr = PetscFree(rmap);CHKERRQ(ierr); 1474 1475 for (i=0; i<ismax; i++) { 1476 if (!allcolumns[i]) { 1477 #if defined (PETSC_USE_CTABLE) 1478 ierr = PetscTableDestroy((PetscTable*)&cmap[i]);CHKERRQ(ierr); 1479 #else 1480 ierr = PetscFree(cmap[i]);CHKERRQ(ierr); 1481 #endif 1482 } 1483 } 1484 ierr = PetscFree(cmap);CHKERRQ(ierr); 1485 ierr = PetscFree(lens);CHKERRQ(ierr); 1486 1487 for (i=0; i<ismax; i++) { 1488 ierr = MatAssemblyBegin(submats[i],MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 1489 ierr = MatAssemblyEnd(submats[i],MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 1490 } 1491 1492 c->ijonly = PETSC_FALSE; /* set back to the default */ 1493 PetscFunctionReturn(0); 1494 } 1495 1496