Actual source code: mumps.c

petsc-3.10.3 2018-12-18
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  2: /*
  3:     Provides an interface to the MUMPS sparse solver
  4: */

  6:  #include <../src/mat/impls/aij/mpi/mpiaij.h>
  7:  #include <../src/mat/impls/sbaij/mpi/mpisbaij.h>
  8:  #include <../src/mat/impls/sell/mpi/mpisell.h>

 10: EXTERN_C_BEGIN
 11: #if defined(PETSC_USE_COMPLEX)
 12: #if defined(PETSC_USE_REAL_SINGLE)
 13: #include <cmumps_c.h>
 14: #else
 15: #include <zmumps_c.h>
 16: #endif
 17: #else
 18: #if defined(PETSC_USE_REAL_SINGLE)
 19: #include <smumps_c.h>
 20: #else
 21: #include <dmumps_c.h>
 22: #endif
 23: #endif
 24: EXTERN_C_END
 25: #define JOB_INIT -1
 26: #define JOB_FACTSYMBOLIC 1
 27: #define JOB_FACTNUMERIC 2
 28: #define JOB_SOLVE 3
 29: #define JOB_END -2

 31: /* calls to MUMPS */
 32: #if defined(PETSC_USE_COMPLEX)
 33: #if defined(PETSC_USE_REAL_SINGLE)
 34: #define MUMPS_c cmumps_c
 35: #else
 36: #define MUMPS_c zmumps_c
 37: #endif
 38: #else
 39: #if defined(PETSC_USE_REAL_SINGLE)
 40: #define MUMPS_c smumps_c
 41: #else
 42: #define MUMPS_c dmumps_c
 43: #endif
 44: #endif

 46: /* if using PETSc OpenMP support, we only call MUMPS on master ranks. Before/after the call, we change/restore CPUs the master ranks can run on */
 47: #if defined(PETSC_HAVE_OPENMP_SUPPORT)
 48: #define PetscMUMPS_c(mumps) \
 49:   do { \
 50:     if (mumps->use_petsc_omp_support) { \
 51:       if (mumps->is_omp_master) { \
 52:         PetscOmpCtrlOmpRegionOnMasterBegin(mumps->omp_ctrl); \
 53:         MUMPS_c(&mumps->id); \
 54:         PetscOmpCtrlOmpRegionOnMasterEnd(mumps->omp_ctrl); \
 55:       } \
 56:       PetscOmpCtrlBarrier(mumps->omp_ctrl); \
 57:     } else { \
 58:       MUMPS_c(&mumps->id); \
 59:     } \
 60:   } while(0)
 61: #else
 62: #define PetscMUMPS_c(mumps) \
 63:   do { MUMPS_c(&mumps->id); } while (0)
 64: #endif

 66: /* declare MumpsScalar */
 67: #if defined(PETSC_USE_COMPLEX)
 68: #if defined(PETSC_USE_REAL_SINGLE)
 69: #define MumpsScalar mumps_complex
 70: #else
 71: #define MumpsScalar mumps_double_complex
 72: #endif
 73: #else
 74: #define MumpsScalar PetscScalar
 75: #endif

 77: /* macros s.t. indices match MUMPS documentation */
 78: #define ICNTL(I) icntl[(I)-1]
 79: #define CNTL(I) cntl[(I)-1]
 80: #define INFOG(I) infog[(I)-1]
 81: #define INFO(I) info[(I)-1]
 82: #define RINFOG(I) rinfog[(I)-1]
 83: #define RINFO(I) rinfo[(I)-1]

 85: typedef struct {
 86: #if defined(PETSC_USE_COMPLEX)
 87: #if defined(PETSC_USE_REAL_SINGLE)
 88:   CMUMPS_STRUC_C id;
 89: #else
 90:   ZMUMPS_STRUC_C id;
 91: #endif
 92: #else
 93: #if defined(PETSC_USE_REAL_SINGLE)
 94:   SMUMPS_STRUC_C id;
 95: #else
 96:   DMUMPS_STRUC_C id;
 97: #endif
 98: #endif

100:   MatStructure matstruc;
101:   PetscMPIInt  myid,petsc_size;
102:   PetscInt     *irn,*jcn,nz,sym;
103:   PetscScalar  *val;
104:   MPI_Comm     mumps_comm;
105:   PetscInt     ICNTL9_pre;           /* check if ICNTL(9) is changed from previous MatSolve */
106:   VecScatter   scat_rhs, scat_sol;   /* used by MatSolve() */
107:   Vec          b_seq,x_seq;
108:   PetscInt     ninfo,*info;          /* display INFO */
109:   PetscInt     sizeredrhs;
110:   PetscScalar  *schur_sol;
111:   PetscInt     schur_sizesol;

113:   PetscBool    use_petsc_omp_support;
114:   PetscOmpCtrl omp_ctrl;             /* an OpenMP controler that blocked processes will release their CPU (MPI_Barrier does not have this guarantee) */
115:   MPI_Comm     petsc_comm,omp_comm;  /* petsc_comm is petsc matrix's comm */
116:   PetscMPIInt  mpinz;                /* on master rank, nz = sum(mpinz) over omp_comm; on other ranks, mpinz = nz*/
117:   PetscMPIInt  omp_comm_size;
118:   PetscBool    is_omp_master;        /* is this rank the master of omp_comm */
119:   PetscMPIInt  *recvcount,*displs;

121:   PetscErrorCode (*ConvertToTriples)(Mat, int, MatReuse, int*, int**, int**, PetscScalar**);
122: } Mat_MUMPS;

124: extern PetscErrorCode MatDuplicate_MUMPS(Mat,MatDuplicateOption,Mat*);

126: static PetscErrorCode MatMumpsResetSchur_Private(Mat_MUMPS* mumps)
127: {

131:   PetscFree2(mumps->id.listvar_schur,mumps->id.schur);
132:   PetscFree(mumps->id.redrhs);
133:   PetscFree(mumps->schur_sol);
134:   mumps->id.size_schur = 0;
135:   mumps->id.schur_lld  = 0;
136:   mumps->id.ICNTL(19)  = 0;
137:   return(0);
138: }

140: /* solve with rhs in mumps->id.redrhs and return in the same location */
141: static PetscErrorCode MatMumpsSolveSchur_Private(Mat F)
142: {
143:   Mat_MUMPS            *mumps=(Mat_MUMPS*)F->data;
144:   Mat                  S,B,X;
145:   MatFactorSchurStatus schurstatus;
146:   PetscInt             sizesol;
147:   PetscErrorCode       ierr;

150:   MatFactorFactorizeSchurComplement(F);
151:   MatFactorGetSchurComplement(F,&S,&schurstatus);
152:   MatCreateSeqDense(PETSC_COMM_SELF,mumps->id.size_schur,mumps->id.nrhs,(PetscScalar*)mumps->id.redrhs,&B);
153:   switch (schurstatus) {
154:   case MAT_FACTOR_SCHUR_FACTORED:
155:     MatCreateSeqDense(PETSC_COMM_SELF,mumps->id.size_schur,mumps->id.nrhs,(PetscScalar*)mumps->id.redrhs,&X);
156:     if (!mumps->id.ICNTL(9)) { /* transpose solve */
157:       MatMatSolveTranspose(S,B,X);
158:     } else {
159:       MatMatSolve(S,B,X);
160:     }
161:     break;
162:   case MAT_FACTOR_SCHUR_INVERTED:
163:     sizesol = mumps->id.nrhs*mumps->id.size_schur;
164:     if (!mumps->schur_sol || sizesol > mumps->schur_sizesol) {
165:       PetscFree(mumps->schur_sol);
166:       PetscMalloc1(sizesol,&mumps->schur_sol);
167:       mumps->schur_sizesol = sizesol;
168:     }
169:     MatCreateSeqDense(PETSC_COMM_SELF,mumps->id.size_schur,mumps->id.nrhs,mumps->schur_sol,&X);
170:     if (!mumps->id.ICNTL(9)) { /* transpose solve */
171:       MatTransposeMatMult(S,B,MAT_REUSE_MATRIX,PETSC_DEFAULT,&X);
172:     } else {
173:       MatMatMult(S,B,MAT_REUSE_MATRIX,PETSC_DEFAULT,&X);
174:     }
175:     MatCopy(X,B,SAME_NONZERO_PATTERN);
176:     break;
177:   default:
178:     SETERRQ1(PetscObjectComm((PetscObject)F),PETSC_ERR_SUP,"Unhandled MatFactorSchurStatus %D",F->schur_status);
179:     break;
180:   }
181:   MatFactorRestoreSchurComplement(F,&S,schurstatus);
182:   MatDestroy(&B);
183:   MatDestroy(&X);
184:   return(0);
185: }

187: static PetscErrorCode MatMumpsHandleSchur_Private(Mat F, PetscBool expansion)
188: {
189:   Mat_MUMPS     *mumps=(Mat_MUMPS*)F->data;

193:   if (!mumps->id.ICNTL(19)) { /* do nothing when Schur complement has not been computed */
194:     return(0);
195:   }
196:   if (!expansion) { /* prepare for the condensation step */
197:     PetscInt sizeredrhs = mumps->id.nrhs*mumps->id.size_schur;
198:     /* allocate MUMPS internal array to store reduced right-hand sides */
199:     if (!mumps->id.redrhs || sizeredrhs > mumps->sizeredrhs) {
200:       PetscFree(mumps->id.redrhs);
201:       mumps->id.lredrhs = mumps->id.size_schur;
202:       PetscMalloc1(mumps->id.nrhs*mumps->id.lredrhs,&mumps->id.redrhs);
203:       mumps->sizeredrhs = mumps->id.nrhs*mumps->id.lredrhs;
204:     }
205:     mumps->id.ICNTL(26) = 1; /* condensation phase */
206:   } else { /* prepare for the expansion step */
207:     /* solve Schur complement (this has to be done by the MUMPS user, so basically us) */
208:     MatMumpsSolveSchur_Private(F);
209:     mumps->id.ICNTL(26) = 2; /* expansion phase */
210:     PetscMUMPS_c(mumps);
211:     if (mumps->id.INFOG(1) < 0) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_LIB,"Error reported by MUMPS in solve phase: INFOG(1)=%d\n",mumps->id.INFOG(1));
212:     /* restore defaults */
213:     mumps->id.ICNTL(26) = -1;
214:     /* free MUMPS internal array for redrhs if we have solved for multiple rhs in order to save memory space */
215:     if (mumps->id.nrhs > 1) {
216:       PetscFree(mumps->id.redrhs);
217:       mumps->id.lredrhs = 0;
218:       mumps->sizeredrhs = 0;
219:     }
220:   }
221:   return(0);
222: }

224: /*
225:   MatConvertToTriples_A_B - convert Petsc matrix to triples: row[nz], col[nz], val[nz]

227:   input:
228:     A       - matrix in aij,baij or sbaij (bs=1) format
229:     shift   - 0: C style output triple; 1: Fortran style output triple.
230:     reuse   - MAT_INITIAL_MATRIX: spaces are allocated and values are set for the triple
231:               MAT_REUSE_MATRIX:   only the values in v array are updated
232:   output:
233:     nnz     - dim of r, c, and v (number of local nonzero entries of A)
234:     r, c, v - row and col index, matrix values (matrix triples)

236:   The returned values r, c, and sometimes v are obtained in a single PetscMalloc(). Then in MatDestroy_MUMPS() it is
237:   freed with PetscFree(mumps->irn);  This is not ideal code, the fact that v is ONLY sometimes part of mumps->irn means
238:   that the PetscMalloc() cannot easily be replaced with a PetscMalloc3().

240:  */

242: PetscErrorCode MatConvertToTriples_seqaij_seqaij(Mat A,int shift,MatReuse reuse,int *nnz,int **r, int **c, PetscScalar **v)
243: {
244:   const PetscInt *ai,*aj,*ajj,M=A->rmap->n;
245:   PetscInt       nz,rnz,i,j;
247:   PetscInt       *row,*col;
248:   Mat_SeqAIJ     *aa=(Mat_SeqAIJ*)A->data;

251:   *v=aa->a;
252:   if (reuse == MAT_INITIAL_MATRIX) {
253:     nz   = aa->nz;
254:     ai   = aa->i;
255:     aj   = aa->j;
256:     *nnz = nz;
257:     PetscMalloc1(2*nz, &row);
258:     col  = row + nz;

260:     nz = 0;
261:     for (i=0; i<M; i++) {
262:       rnz = ai[i+1] - ai[i];
263:       ajj = aj + ai[i];
264:       for (j=0; j<rnz; j++) {
265:         row[nz] = i+shift; col[nz++] = ajj[j] + shift;
266:       }
267:     }
268:     *r = row; *c = col;
269:   }
270:   return(0);
271: }

273: PetscErrorCode MatConvertToTriples_seqsell_seqaij(Mat A,int shift,MatReuse reuse,int *nnz,int **r, int **c, PetscScalar **v)
274: {
275:   Mat_SeqSELL *a=(Mat_SeqSELL*)A->data;
276:   PetscInt    *ptr;

279:   *v = a->val;
280:   if (reuse == MAT_INITIAL_MATRIX) {
281:     PetscInt       nz,i,j,row;

284:     nz   = a->sliidx[a->totalslices];
285:     *nnz = nz;
286:     PetscMalloc1(2*nz, &ptr);
287:     *r   = ptr;
288:     *c   = ptr + nz;

290:     for (i=0; i<a->totalslices; i++) {
291:       for (j=a->sliidx[i],row=0; j<a->sliidx[i+1]; j++,row=((row+1)&0x07)) {
292:         *ptr++ = 8*i + row + shift;
293:       }
294:     }
295:     for (i=0;i<nz;i++) *ptr++ = a->colidx[i] + shift;
296:   }
297:   return(0);
298: }

300: PetscErrorCode MatConvertToTriples_seqbaij_seqaij(Mat A,int shift,MatReuse reuse,int *nnz,int **r, int **c, PetscScalar **v)
301: {
302:   Mat_SeqBAIJ    *aa=(Mat_SeqBAIJ*)A->data;
303:   const PetscInt *ai,*aj,*ajj,bs2 = aa->bs2;
304:   PetscInt       bs,M,nz,idx=0,rnz,i,j,k,m;
306:   PetscInt       *row,*col;

309:   MatGetBlockSize(A,&bs);
310:   M = A->rmap->N/bs;
311:   *v = aa->a;
312:   if (reuse == MAT_INITIAL_MATRIX) {
313:     ai   = aa->i; aj = aa->j;
314:     nz   = bs2*aa->nz;
315:     *nnz = nz;
316:     PetscMalloc1(2*nz, &row);
317:     col  = row + nz;

319:     for (i=0; i<M; i++) {
320:       ajj = aj + ai[i];
321:       rnz = ai[i+1] - ai[i];
322:       for (k=0; k<rnz; k++) {
323:         for (j=0; j<bs; j++) {
324:           for (m=0; m<bs; m++) {
325:             row[idx]   = i*bs + m + shift;
326:             col[idx++] = bs*(ajj[k]) + j + shift;
327:           }
328:         }
329:       }
330:     }
331:     *r = row; *c = col;
332:   }
333:   return(0);
334: }

336: PetscErrorCode MatConvertToTriples_seqsbaij_seqsbaij(Mat A,int shift,MatReuse reuse,int *nnz,int **r, int **c, PetscScalar **v)
337: {
338:   const PetscInt *ai, *aj,*ajj,M=A->rmap->n;
339:   PetscInt       nz,rnz,i,j;
341:   PetscInt       *row,*col;
342:   Mat_SeqSBAIJ   *aa=(Mat_SeqSBAIJ*)A->data;

345:   *v = aa->a;
346:   if (reuse == MAT_INITIAL_MATRIX) {
347:     nz   = aa->nz;
348:     ai   = aa->i;
349:     aj   = aa->j;
350:     *v   = aa->a;
351:     *nnz = nz;
352:     PetscMalloc1(2*nz, &row);
353:     col  = row + nz;

355:     nz = 0;
356:     for (i=0; i<M; i++) {
357:       rnz = ai[i+1] - ai[i];
358:       ajj = aj + ai[i];
359:       for (j=0; j<rnz; j++) {
360:         row[nz] = i+shift; col[nz++] = ajj[j] + shift;
361:       }
362:     }
363:     *r = row; *c = col;
364:   }
365:   return(0);
366: }

368: PetscErrorCode MatConvertToTriples_seqaij_seqsbaij(Mat A,int shift,MatReuse reuse,int *nnz,int **r, int **c, PetscScalar **v)
369: {
370:   const PetscInt    *ai,*aj,*ajj,*adiag,M=A->rmap->n;
371:   PetscInt          nz,rnz,i,j;
372:   const PetscScalar *av,*v1;
373:   PetscScalar       *val;
374:   PetscErrorCode    ierr;
375:   PetscInt          *row,*col;
376:   Mat_SeqAIJ        *aa=(Mat_SeqAIJ*)A->data;
377:   PetscBool         missing;

380:   ai    = aa->i; aj = aa->j; av = aa->a;
381:   adiag = aa->diag;
382:   MatMissingDiagonal_SeqAIJ(A,&missing,&i);
383:   if (reuse == MAT_INITIAL_MATRIX) {
384:     /* count nz in the upper triangular part of A */
385:     nz = 0;
386:     if (missing) {
387:       for (i=0; i<M; i++) {
388:         if (PetscUnlikely(adiag[i] >= ai[i+1])) {
389:           for (j=ai[i];j<ai[i+1];j++) {
390:             if (aj[j] < i) continue;
391:             nz++;
392:           }
393:         } else {
394:           nz += ai[i+1] - adiag[i];
395:         }
396:       }
397:     } else {
398:       for (i=0; i<M; i++) nz += ai[i+1] - adiag[i];
399:     }
400:     *nnz = nz;

402:     PetscMalloc((2*nz*sizeof(PetscInt)+nz*sizeof(PetscScalar)), &row);
403:     col  = row + nz;
404:     val  = (PetscScalar*)(col + nz);

406:     nz = 0;
407:     if (missing) {
408:       for (i=0; i<M; i++) {
409:         if (PetscUnlikely(adiag[i] >= ai[i+1])) {
410:           for (j=ai[i];j<ai[i+1];j++) {
411:             if (aj[j] < i) continue;
412:             row[nz] = i+shift;
413:             col[nz] = aj[j]+shift;
414:             val[nz] = av[j];
415:             nz++;
416:           }
417:         } else {
418:           rnz = ai[i+1] - adiag[i];
419:           ajj = aj + adiag[i];
420:           v1  = av + adiag[i];
421:           for (j=0; j<rnz; j++) {
422:             row[nz] = i+shift; col[nz] = ajj[j] + shift; val[nz++] = v1[j];
423:           }
424:         }
425:       }
426:     } else {
427:       for (i=0; i<M; i++) {
428:         rnz = ai[i+1] - adiag[i];
429:         ajj = aj + adiag[i];
430:         v1  = av + adiag[i];
431:         for (j=0; j<rnz; j++) {
432:           row[nz] = i+shift; col[nz] = ajj[j] + shift; val[nz++] = v1[j];
433:         }
434:       }
435:     }
436:     *r = row; *c = col; *v = val;
437:   } else {
438:     nz = 0; val = *v;
439:     if (missing) {
440:       for (i=0; i <M; i++) {
441:         if (PetscUnlikely(adiag[i] >= ai[i+1])) {
442:           for (j=ai[i];j<ai[i+1];j++) {
443:             if (aj[j] < i) continue;
444:             val[nz++] = av[j];
445:           }
446:         } else {
447:           rnz = ai[i+1] - adiag[i];
448:           v1  = av + adiag[i];
449:           for (j=0; j<rnz; j++) {
450:             val[nz++] = v1[j];
451:           }
452:         }
453:       }
454:     } else {
455:       for (i=0; i <M; i++) {
456:         rnz = ai[i+1] - adiag[i];
457:         v1  = av + adiag[i];
458:         for (j=0; j<rnz; j++) {
459:           val[nz++] = v1[j];
460:         }
461:       }
462:     }
463:   }
464:   return(0);
465: }

467: PetscErrorCode MatConvertToTriples_mpisbaij_mpisbaij(Mat A,int shift,MatReuse reuse,int *nnz,int **r, int **c, PetscScalar **v)
468: {
469:   const PetscInt    *ai, *aj, *bi, *bj,*garray,m=A->rmap->n,*ajj,*bjj;
470:   PetscErrorCode    ierr;
471:   PetscInt          rstart,nz,i,j,jj,irow,countA,countB;
472:   PetscInt          *row,*col;
473:   const PetscScalar *av, *bv,*v1,*v2;
474:   PetscScalar       *val;
475:   Mat_MPISBAIJ      *mat = (Mat_MPISBAIJ*)A->data;
476:   Mat_SeqSBAIJ      *aa  = (Mat_SeqSBAIJ*)(mat->A)->data;
477:   Mat_SeqBAIJ       *bb  = (Mat_SeqBAIJ*)(mat->B)->data;

480:   ai=aa->i; aj=aa->j; bi=bb->i; bj=bb->j; rstart= A->rmap->rstart;
481:   av=aa->a; bv=bb->a;

483:   garray = mat->garray;

485:   if (reuse == MAT_INITIAL_MATRIX) {
486:     nz   = aa->nz + bb->nz;
487:     *nnz = nz;
488:     PetscMalloc((2*nz*sizeof(PetscInt)+nz*sizeof(PetscScalar)), &row);
489:     col  = row + nz;
490:     val  = (PetscScalar*)(col + nz);

492:     *r = row; *c = col; *v = val;
493:   } else {
494:     row = *r; col = *c; val = *v;
495:   }

497:   jj = 0; irow = rstart;
498:   for (i=0; i<m; i++) {
499:     ajj    = aj + ai[i];                 /* ptr to the beginning of this row */
500:     countA = ai[i+1] - ai[i];
501:     countB = bi[i+1] - bi[i];
502:     bjj    = bj + bi[i];
503:     v1     = av + ai[i];
504:     v2     = bv + bi[i];

506:     /* A-part */
507:     for (j=0; j<countA; j++) {
508:       if (reuse == MAT_INITIAL_MATRIX) {
509:         row[jj] = irow + shift; col[jj] = rstart + ajj[j] + shift;
510:       }
511:       val[jj++] = v1[j];
512:     }

514:     /* B-part */
515:     for (j=0; j < countB; j++) {
516:       if (reuse == MAT_INITIAL_MATRIX) {
517:         row[jj] = irow + shift; col[jj] = garray[bjj[j]] + shift;
518:       }
519:       val[jj++] = v2[j];
520:     }
521:     irow++;
522:   }
523:   return(0);
524: }

526: PetscErrorCode MatConvertToTriples_mpiaij_mpiaij(Mat A,int shift,MatReuse reuse,int *nnz,int **r, int **c, PetscScalar **v)
527: {
528:   const PetscInt    *ai, *aj, *bi, *bj,*garray,m=A->rmap->n,*ajj,*bjj;
529:   PetscErrorCode    ierr;
530:   PetscInt          rstart,nz,i,j,jj,irow,countA,countB;
531:   PetscInt          *row,*col;
532:   const PetscScalar *av, *bv,*v1,*v2;
533:   PetscScalar       *val;
534:   Mat_MPIAIJ        *mat = (Mat_MPIAIJ*)A->data;
535:   Mat_SeqAIJ        *aa  = (Mat_SeqAIJ*)(mat->A)->data;
536:   Mat_SeqAIJ        *bb  = (Mat_SeqAIJ*)(mat->B)->data;

539:   ai=aa->i; aj=aa->j; bi=bb->i; bj=bb->j; rstart= A->rmap->rstart;
540:   av=aa->a; bv=bb->a;

542:   garray = mat->garray;

544:   if (reuse == MAT_INITIAL_MATRIX) {
545:     nz   = aa->nz + bb->nz;
546:     *nnz = nz;
547:     PetscMalloc((2*nz*sizeof(PetscInt)+nz*sizeof(PetscScalar)), &row);
548:     col  = row + nz;
549:     val  = (PetscScalar*)(col + nz);

551:     *r = row; *c = col; *v = val;
552:   } else {
553:     row = *r; col = *c; val = *v;
554:   }

556:   jj = 0; irow = rstart;
557:   for (i=0; i<m; i++) {
558:     ajj    = aj + ai[i];                 /* ptr to the beginning of this row */
559:     countA = ai[i+1] - ai[i];
560:     countB = bi[i+1] - bi[i];
561:     bjj    = bj + bi[i];
562:     v1     = av + ai[i];
563:     v2     = bv + bi[i];

565:     /* A-part */
566:     for (j=0; j<countA; j++) {
567:       if (reuse == MAT_INITIAL_MATRIX) {
568:         row[jj] = irow + shift; col[jj] = rstart + ajj[j] + shift;
569:       }
570:       val[jj++] = v1[j];
571:     }

573:     /* B-part */
574:     for (j=0; j < countB; j++) {
575:       if (reuse == MAT_INITIAL_MATRIX) {
576:         row[jj] = irow + shift; col[jj] = garray[bjj[j]] + shift;
577:       }
578:       val[jj++] = v2[j];
579:     }
580:     irow++;
581:   }
582:   return(0);
583: }

585: PetscErrorCode MatConvertToTriples_mpibaij_mpiaij(Mat A,int shift,MatReuse reuse,int *nnz,int **r, int **c, PetscScalar **v)
586: {
587:   Mat_MPIBAIJ       *mat    = (Mat_MPIBAIJ*)A->data;
588:   Mat_SeqBAIJ       *aa     = (Mat_SeqBAIJ*)(mat->A)->data;
589:   Mat_SeqBAIJ       *bb     = (Mat_SeqBAIJ*)(mat->B)->data;
590:   const PetscInt    *ai     = aa->i, *bi = bb->i, *aj = aa->j, *bj = bb->j,*ajj, *bjj;
591:   const PetscInt    *garray = mat->garray,mbs=mat->mbs,rstart=A->rmap->rstart;
592:   const PetscInt    bs2=mat->bs2;
593:   PetscErrorCode    ierr;
594:   PetscInt          bs,nz,i,j,k,n,jj,irow,countA,countB,idx;
595:   PetscInt          *row,*col;
596:   const PetscScalar *av=aa->a, *bv=bb->a,*v1,*v2;
597:   PetscScalar       *val;

600:   MatGetBlockSize(A,&bs);
601:   if (reuse == MAT_INITIAL_MATRIX) {
602:     nz   = bs2*(aa->nz + bb->nz);
603:     *nnz = nz;
604:     PetscMalloc((2*nz*sizeof(PetscInt)+nz*sizeof(PetscScalar)), &row);
605:     col  = row + nz;
606:     val  = (PetscScalar*)(col + nz);

608:     *r = row; *c = col; *v = val;
609:   } else {
610:     row = *r; col = *c; val = *v;
611:   }

613:   jj = 0; irow = rstart;
614:   for (i=0; i<mbs; i++) {
615:     countA = ai[i+1] - ai[i];
616:     countB = bi[i+1] - bi[i];
617:     ajj    = aj + ai[i];
618:     bjj    = bj + bi[i];
619:     v1     = av + bs2*ai[i];
620:     v2     = bv + bs2*bi[i];

622:     idx = 0;
623:     /* A-part */
624:     for (k=0; k<countA; k++) {
625:       for (j=0; j<bs; j++) {
626:         for (n=0; n<bs; n++) {
627:           if (reuse == MAT_INITIAL_MATRIX) {
628:             row[jj] = irow + n + shift;
629:             col[jj] = rstart + bs*ajj[k] + j + shift;
630:           }
631:           val[jj++] = v1[idx++];
632:         }
633:       }
634:     }

636:     idx = 0;
637:     /* B-part */
638:     for (k=0; k<countB; k++) {
639:       for (j=0; j<bs; j++) {
640:         for (n=0; n<bs; n++) {
641:           if (reuse == MAT_INITIAL_MATRIX) {
642:             row[jj] = irow + n + shift;
643:             col[jj] = bs*garray[bjj[k]] + j + shift;
644:           }
645:           val[jj++] = v2[idx++];
646:         }
647:       }
648:     }
649:     irow += bs;
650:   }
651:   return(0);
652: }

654: PetscErrorCode MatConvertToTriples_mpiaij_mpisbaij(Mat A,int shift,MatReuse reuse,int *nnz,int **r, int **c, PetscScalar **v)
655: {
656:   const PetscInt    *ai, *aj,*adiag, *bi, *bj,*garray,m=A->rmap->n,*ajj,*bjj;
657:   PetscErrorCode    ierr;
658:   PetscInt          rstart,nz,nza,nzb,i,j,jj,irow,countA,countB;
659:   PetscInt          *row,*col;
660:   const PetscScalar *av, *bv,*v1,*v2;
661:   PetscScalar       *val;
662:   Mat_MPIAIJ        *mat =  (Mat_MPIAIJ*)A->data;
663:   Mat_SeqAIJ        *aa  =(Mat_SeqAIJ*)(mat->A)->data;
664:   Mat_SeqAIJ        *bb  =(Mat_SeqAIJ*)(mat->B)->data;

667:   ai=aa->i; aj=aa->j; adiag=aa->diag;
668:   bi=bb->i; bj=bb->j; garray = mat->garray;
669:   av=aa->a; bv=bb->a;

671:   rstart = A->rmap->rstart;

673:   if (reuse == MAT_INITIAL_MATRIX) {
674:     nza = 0;    /* num of upper triangular entries in mat->A, including diagonals */
675:     nzb = 0;    /* num of upper triangular entries in mat->B */
676:     for (i=0; i<m; i++) {
677:       nza   += (ai[i+1] - adiag[i]);
678:       countB = bi[i+1] - bi[i];
679:       bjj    = bj + bi[i];
680:       for (j=0; j<countB; j++) {
681:         if (garray[bjj[j]] > rstart) nzb++;
682:       }
683:     }

685:     nz   = nza + nzb; /* total nz of upper triangular part of mat */
686:     *nnz = nz;
687:     PetscMalloc((2*nz*sizeof(PetscInt)+nz*sizeof(PetscScalar)), &row);
688:     col  = row + nz;
689:     val  = (PetscScalar*)(col + nz);

691:     *r = row; *c = col; *v = val;
692:   } else {
693:     row = *r; col = *c; val = *v;
694:   }

696:   jj = 0; irow = rstart;
697:   for (i=0; i<m; i++) {
698:     ajj    = aj + adiag[i];                 /* ptr to the beginning of the diagonal of this row */
699:     v1     = av + adiag[i];
700:     countA = ai[i+1] - adiag[i];
701:     countB = bi[i+1] - bi[i];
702:     bjj    = bj + bi[i];
703:     v2     = bv + bi[i];

705:     /* A-part */
706:     for (j=0; j<countA; j++) {
707:       if (reuse == MAT_INITIAL_MATRIX) {
708:         row[jj] = irow + shift; col[jj] = rstart + ajj[j] + shift;
709:       }
710:       val[jj++] = v1[j];
711:     }

713:     /* B-part */
714:     for (j=0; j < countB; j++) {
715:       if (garray[bjj[j]] > rstart) {
716:         if (reuse == MAT_INITIAL_MATRIX) {
717:           row[jj] = irow + shift; col[jj] = garray[bjj[j]] + shift;
718:         }
719:         val[jj++] = v2[j];
720:       }
721:     }
722:     irow++;
723:   }
724:   return(0);
725: }

727: PetscErrorCode MatDestroy_MUMPS(Mat A)
728: {
729:   Mat_MUMPS      *mumps=(Mat_MUMPS*)A->data;

733:   PetscFree2(mumps->id.sol_loc,mumps->id.isol_loc);
734:   VecScatterDestroy(&mumps->scat_rhs);
735:   VecScatterDestroy(&mumps->scat_sol);
736:   VecDestroy(&mumps->b_seq);
737:   VecDestroy(&mumps->x_seq);
738:   PetscFree(mumps->id.perm_in);
739:   PetscFree(mumps->irn);
740:   PetscFree(mumps->info);
741:   MatMumpsResetSchur_Private(mumps);
742:   mumps->id.job = JOB_END;
743:   PetscMUMPS_c(mumps);
744: #if defined(PETSC_HAVE_OPENMP_SUPPORT)
745:   if (mumps->use_petsc_omp_support) { PetscOmpCtrlDestroy(&mumps->omp_ctrl); }
746: #endif
747:   PetscFree2(mumps->recvcount,mumps->displs);
748:   PetscFree(A->data);

750:   /* clear composed functions */
751:   PetscObjectComposeFunction((PetscObject)A,"MatFactorGetSolverType_C",NULL);
752:   PetscObjectComposeFunction((PetscObject)A,"MatFactorSetSchurIS_C",NULL);
753:   PetscObjectComposeFunction((PetscObject)A,"MatFactorCreateSchurComplement_C",NULL);
754:   PetscObjectComposeFunction((PetscObject)A,"MatMumpsSetIcntl_C",NULL);
755:   PetscObjectComposeFunction((PetscObject)A,"MatMumpsGetIcntl_C",NULL);
756:   PetscObjectComposeFunction((PetscObject)A,"MatMumpsSetCntl_C",NULL);
757:   PetscObjectComposeFunction((PetscObject)A,"MatMumpsGetCntl_C",NULL);
758:   PetscObjectComposeFunction((PetscObject)A,"MatMumpsGetInfo_C",NULL);
759:   PetscObjectComposeFunction((PetscObject)A,"MatMumpsGetInfog_C",NULL);
760:   PetscObjectComposeFunction((PetscObject)A,"MatMumpsGetRinfo_C",NULL);
761:   PetscObjectComposeFunction((PetscObject)A,"MatMumpsGetRinfog_C",NULL);
762:   PetscObjectComposeFunction((PetscObject)A,"MatMumpsGetInverse_C",NULL);
763:   PetscObjectComposeFunction((PetscObject)A,"MatMumpsGetInverseTranspose_C",NULL);
764:   return(0);
765: }

767: PetscErrorCode MatSolve_MUMPS(Mat A,Vec b,Vec x)
768: {
769:   Mat_MUMPS        *mumps=(Mat_MUMPS*)A->data;
770:   PetscScalar      *array;
771:   Vec              b_seq;
772:   IS               is_iden,is_petsc;
773:   PetscErrorCode   ierr;
774:   PetscInt         i;
775:   PetscBool        second_solve = PETSC_FALSE;
776:   static PetscBool cite1 = PETSC_FALSE,cite2 = PETSC_FALSE;

779:   PetscCitationsRegister("@article{MUMPS01,\n  author = {P.~R. Amestoy and I.~S. Duff and J.-Y. L'Excellent and J. Koster},\n  title = {A fully asynchronous multifrontal solver using distributed dynamic scheduling},\n  journal = {SIAM Journal on Matrix Analysis and Applications},\n  volume = {23},\n  number = {1},\n  pages = {15--41},\n  year = {2001}\n}\n",&cite1);
780:   PetscCitationsRegister("@article{MUMPS02,\n  author = {P.~R. Amestoy and A. Guermouche and J.-Y. L'Excellent and S. Pralet},\n  title = {Hybrid scheduling for the parallel solution of linear systems},\n  journal = {Parallel Computing},\n  volume = {32},\n  number = {2},\n  pages = {136--156},\n  year = {2006}\n}\n",&cite2);

782:   if (A->factorerrortype) {
783:     PetscInfo2(A,"MatSolve is called with singular matrix factor, INFOG(1)=%d, INFO(2)=%d\n",mumps->id.INFOG(1),mumps->id.INFO(2));
784:     VecSetInf(x);
785:     return(0);
786:   }

788:   mumps->id.ICNTL(20)= 0; /* dense RHS */
789:   mumps->id.nrhs     = 1;
790:   b_seq          = mumps->b_seq;
791:   if (mumps->petsc_size > 1) {
792:     /* MUMPS only supports centralized rhs. Scatter b into a seqential rhs vector */
793:     VecScatterBegin(mumps->scat_rhs,b,b_seq,INSERT_VALUES,SCATTER_FORWARD);
794:     VecScatterEnd(mumps->scat_rhs,b,b_seq,INSERT_VALUES,SCATTER_FORWARD);
795:     if (!mumps->myid) {VecGetArray(b_seq,&array);}
796:   } else {  /* petsc_size == 1 */
797:     VecCopy(b,x);
798:     VecGetArray(x,&array);
799:   }
800:   if (!mumps->myid) { /* define rhs on the host */
801:     mumps->id.nrhs = 1;
802:     mumps->id.rhs = (MumpsScalar*)array;
803:   }

805:   /*
806:      handle condensation step of Schur complement (if any)
807:      We set by default ICNTL(26) == -1 when Schur indices have been provided by the user.
808:      According to MUMPS (5.0.0) manual, any value should be harmful during the factorization phase
809:      Unless the user provides a valid value for ICNTL(26), MatSolve and MatMatSolve routines solve the full system.
810:      This requires an extra call to PetscMUMPS_c and the computation of the factors for S
811:   */
812:   if (mumps->id.size_schur > 0 && (mumps->id.ICNTL(26) < 0 || mumps->id.ICNTL(26) > 2)) {
813:     if (mumps->petsc_size > 1) SETERRQ(PetscObjectComm((PetscObject)A),PETSC_ERR_SUP,"Parallel Schur complements not yet supported from PETSc\n");
814:     second_solve = PETSC_TRUE;
815:     MatMumpsHandleSchur_Private(A,PETSC_FALSE);
816:   }
817:   /* solve phase */
818:   /*-------------*/
819:   mumps->id.job = JOB_SOLVE;
820:   PetscMUMPS_c(mumps);
821:   if (mumps->id.INFOG(1) < 0) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_LIB,"Error reported by MUMPS in solve phase: INFOG(1)=%d\n",mumps->id.INFOG(1));

823:   /* handle expansion step of Schur complement (if any) */
824:   if (second_solve) {
825:     MatMumpsHandleSchur_Private(A,PETSC_TRUE);
826:   }

828:   if (mumps->petsc_size > 1) { /* convert mumps distributed solution to petsc mpi x */
829:     if (mumps->scat_sol && mumps->ICNTL9_pre != mumps->id.ICNTL(9)) {
830:       /* when id.ICNTL(9) changes, the contents of lsol_loc may change (not its size, lsol_loc), recreates scat_sol */
831:       VecScatterDestroy(&mumps->scat_sol);
832:     }
833:     if (!mumps->scat_sol) { /* create scatter scat_sol */
834:       ISCreateStride(PETSC_COMM_SELF,mumps->id.lsol_loc,0,1,&is_iden); /* from */
835:       for (i=0; i<mumps->id.lsol_loc; i++) {
836:         mumps->id.isol_loc[i] -= 1; /* change Fortran style to C style */
837:       }
838:       ISCreateGeneral(PETSC_COMM_SELF,mumps->id.lsol_loc,mumps->id.isol_loc,PETSC_COPY_VALUES,&is_petsc);  /* to */
839:       VecScatterCreate(mumps->x_seq,is_iden,x,is_petsc,&mumps->scat_sol);
840:       ISDestroy(&is_iden);
841:       ISDestroy(&is_petsc);

843:       mumps->ICNTL9_pre = mumps->id.ICNTL(9); /* save current value of id.ICNTL(9) */
844:     }

846:     VecScatterBegin(mumps->scat_sol,mumps->x_seq,x,INSERT_VALUES,SCATTER_FORWARD);
847:     VecScatterEnd(mumps->scat_sol,mumps->x_seq,x,INSERT_VALUES,SCATTER_FORWARD);
848:   }
849:   PetscLogFlops(2.0*mumps->id.RINFO(3));
850:   return(0);
851: }

853: PetscErrorCode MatSolveTranspose_MUMPS(Mat A,Vec b,Vec x)
854: {
855:   Mat_MUMPS      *mumps=(Mat_MUMPS*)A->data;

859:   mumps->id.ICNTL(9) = 0;
860:   MatSolve_MUMPS(A,b,x);
861:   mumps->id.ICNTL(9) = 1;
862:   return(0);
863: }

865: PetscErrorCode MatMatSolve_MUMPS(Mat A,Mat B,Mat X)
866: {
868:   Mat            Bt = NULL;
869:   PetscBool      flg, flgT;
870:   Mat_MUMPS      *mumps=(Mat_MUMPS*)A->data;
871:   PetscInt       i,nrhs,M;
872:   PetscScalar    *array,*bray;
873:   PetscInt       lsol_loc,nlsol_loc,*isol_loc,*idx,*iidx,*idxx,*isol_loc_save;
874:   MumpsScalar    *sol_loc,*sol_loc_save;
875:   IS             is_to,is_from;
876:   PetscInt       k,proc,j,m;
877:   const PetscInt *rstart;
878:   Vec            v_mpi,b_seq,x_seq;
879:   VecScatter     scat_rhs,scat_sol;
880:   PetscScalar    *aa;
881:   PetscInt       spnr,*ia,*ja;
882:   Mat_MPIAIJ     *b = NULL;

885:   PetscObjectTypeCompareAny((PetscObject)X,&flg,MATSEQDENSE,MATMPIDENSE,NULL);
886:   if (!flg) SETERRQ(PetscObjectComm((PetscObject)X),PETSC_ERR_ARG_WRONG,"Matrix X must be MATDENSE matrix");

888:   PetscObjectTypeCompareAny((PetscObject)B,&flg,MATSEQDENSE,MATMPIDENSE,NULL);
889:   if (flg) { /* dense B */
890:     if (B->rmap->n != X->rmap->n) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONG,"Matrix B and X must have same row distribution");
891:     mumps->id.ICNTL(20)= 0; /* dense RHS */
892:   } else { /* sparse B */
893:     PetscObjectTypeCompare((PetscObject)B,MATTRANSPOSEMAT,&flgT);
894:     if (flgT) { /* input B is transpose of actural RHS matrix,
895:                  because mumps requires sparse compressed COLUMN storage! See MatMatTransposeSolve_MUMPS() */
896:       MatTransposeGetMat(B,&Bt);
897:     } else SETERRQ(PetscObjectComm((PetscObject)B),PETSC_ERR_ARG_WRONG,"Matrix B must be MATTRANSPOSEMAT matrix");
898:     mumps->id.ICNTL(20)= 1; /* sparse RHS */
899:   }

901:   MatGetSize(B,&M,&nrhs);
902:   mumps->id.nrhs = nrhs;
903:   mumps->id.lrhs = M;
904:   mumps->id.rhs  = NULL;

906:   if (mumps->petsc_size == 1) {
907:     PetscScalar *aa;
908:     PetscInt    spnr,*ia,*ja;
909:     PetscBool   second_solve = PETSC_FALSE;

911:     MatDenseGetArray(X,&array);
912:     mumps->id.rhs = (MumpsScalar*)array;

914:     if (!Bt) { /* dense B */
915:       /* copy B to X */
916:       MatDenseGetArray(B,&bray);
917:       PetscMemcpy(array,bray,M*nrhs*sizeof(PetscScalar));
918:       MatDenseRestoreArray(B,&bray);
919:     } else { /* sparse B */
920:       MatSeqAIJGetArray(Bt,&aa);
921:       MatGetRowIJ(Bt,1,PETSC_FALSE,PETSC_FALSE,&spnr,(const PetscInt**)&ia,(const PetscInt**)&ja,&flg);
922:       if (!flg) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONG,"Cannot get IJ structure");
923:       /* mumps requires ia and ja start at 1! */
924:       mumps->id.irhs_ptr    = ia;
925:       mumps->id.irhs_sparse = ja;
926:       mumps->id.nz_rhs      = ia[spnr] - 1;
927:       mumps->id.rhs_sparse  = (MumpsScalar*)aa;
928:     }
929:     /* handle condensation step of Schur complement (if any) */
930:     if (mumps->id.size_schur > 0 && (mumps->id.ICNTL(26) < 0 || mumps->id.ICNTL(26) > 2)) {
931:       second_solve = PETSC_TRUE;
932:       MatMumpsHandleSchur_Private(A,PETSC_FALSE);
933:     }
934:     /* solve phase */
935:     /*-------------*/
936:     mumps->id.job = JOB_SOLVE;
937:     PetscMUMPS_c(mumps);
938:     if (mumps->id.INFOG(1) < 0) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_LIB,"Error reported by MUMPS in solve phase: INFOG(1)=%d\n",mumps->id.INFOG(1));

940:     /* handle expansion step of Schur complement (if any) */
941:     if (second_solve) {
942:       MatMumpsHandleSchur_Private(A,PETSC_TRUE);
943:     }
944:     if (Bt) { /* sparse B */
945:       MatSeqAIJRestoreArray(Bt,&aa);
946:       MatRestoreRowIJ(Bt,1,PETSC_FALSE,PETSC_FALSE,&spnr,(const PetscInt**)&ia,(const PetscInt**)&ja,&flg);
947:       if (!flg) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONG,"Cannot restore IJ structure");
948:     }
949:     MatDenseRestoreArray(X,&array);
950:     return(0);
951:   }

953:   /*--------- parallel case: MUMPS requires rhs B to be centralized on the host! --------*/
954:   if (mumps->petsc_size > 1 && mumps->id.ICNTL(19)) SETERRQ(PetscObjectComm((PetscObject)A),PETSC_ERR_SUP,"Parallel Schur complements not yet supported from PETSc\n");

956:   /* create x_seq to hold mumps local solution */
957:   isol_loc_save = mumps->id.isol_loc; /* save it for MatSovle() */
958:   sol_loc_save  = mumps->id.sol_loc;

960:   lsol_loc  = mumps->id.lsol_loc;
961:   nlsol_loc = nrhs*lsol_loc;     /* length of sol_loc */
962:   PetscMalloc2(nlsol_loc,&sol_loc,lsol_loc,&isol_loc);
963:   mumps->id.sol_loc  = (MumpsScalar*)sol_loc;
964:   mumps->id.isol_loc = isol_loc;

966:   VecCreateSeqWithArray(PETSC_COMM_SELF,1,nlsol_loc,(PetscScalar*)sol_loc,&x_seq);

968:   /* scatter v_mpi to b_seq because MUMPS only supports centralized rhs */
969:   /* idx: maps from k-th index of v_mpi to (i,j)-th global entry of B;
970:      iidx: inverse of idx, will be used by scattering mumps x_seq -> petsc X */
971:   PetscMalloc1(nrhs*M,&idx);

973:   if (!Bt) { /* dense B */
974:     /* wrap dense rhs matrix B into a vector v_mpi */
975:     MatGetLocalSize(B,&m,NULL);
976:     MatDenseGetArray(B,&bray);
977:     VecCreateMPIWithArray(PetscObjectComm((PetscObject)B),1,nrhs*m,nrhs*M,(const PetscScalar*)bray,&v_mpi);
978:     MatDenseRestoreArray(B,&bray);

980:     /* scatter v_mpi to b_seq in proc[0]. MUMPS requires rhs to be centralized on the host! */
981:     if (!mumps->myid) {
982:       MatGetOwnershipRanges(B,&rstart);
983:       k = 0;
984:       for (proc=0; proc<mumps->petsc_size; proc++){
985:         for (j=0; j<nrhs; j++){
986:           for (i=rstart[proc]; i<rstart[proc+1]; i++){
987:             idx[k++]      = j*M + i;
988:           }
989:         }
990:       }

992:       VecCreateSeq(PETSC_COMM_SELF,nrhs*M,&b_seq);
993:       ISCreateGeneral(PETSC_COMM_SELF,nrhs*M,idx,PETSC_COPY_VALUES,&is_to);
994:       ISCreateStride(PETSC_COMM_SELF,nrhs*M,0,1,&is_from);
995:     } else {
996:       VecCreateSeq(PETSC_COMM_SELF,0,&b_seq);
997:       ISCreateStride(PETSC_COMM_SELF,0,0,1,&is_to);
998:       ISCreateStride(PETSC_COMM_SELF,0,0,1,&is_from);
999:     }
1000:     VecScatterCreate(v_mpi,is_from,b_seq,is_to,&scat_rhs);
1001:     VecScatterBegin(scat_rhs,v_mpi,b_seq,INSERT_VALUES,SCATTER_FORWARD);
1002:     ISDestroy(&is_to);
1003:     ISDestroy(&is_from);
1004:     VecScatterEnd(scat_rhs,v_mpi,b_seq,INSERT_VALUES,SCATTER_FORWARD);

1006:     if (!mumps->myid) { /* define rhs on the host */
1007:       VecGetArray(b_seq,&bray);
1008:       mumps->id.rhs = (MumpsScalar*)bray;
1009:       VecRestoreArray(b_seq,&bray);
1010:     }

1012:   } else { /* sparse B */
1013:     b = (Mat_MPIAIJ*)Bt->data;

1015:     /* wrap dense X into a vector v_mpi */
1016:     MatGetLocalSize(X,&m,NULL);
1017:     MatDenseGetArray(X,&bray);
1018:     VecCreateMPIWithArray(PetscObjectComm((PetscObject)X),1,nrhs*m,nrhs*M,(const PetscScalar*)bray,&v_mpi);
1019:     MatDenseRestoreArray(X,&bray);

1021:     if (!mumps->myid) {
1022:       MatSeqAIJGetArray(b->A,&aa);
1023:       MatGetRowIJ(b->A,1,PETSC_FALSE,PETSC_FALSE,&spnr,(const PetscInt**)&ia,(const PetscInt**)&ja,&flg);
1024:       if (!flg) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONG,"Cannot get IJ structure");
1025:       /* mumps requires ia and ja start at 1! */
1026:       mumps->id.irhs_ptr    = ia;
1027:       mumps->id.irhs_sparse = ja;
1028:       mumps->id.nz_rhs      = ia[spnr] - 1;
1029:       mumps->id.rhs_sparse  = (MumpsScalar*)aa;
1030:     } else {
1031:       mumps->id.irhs_ptr    = NULL;
1032:       mumps->id.irhs_sparse = NULL;
1033:       mumps->id.nz_rhs      = 0;
1034:       mumps->id.rhs_sparse  = NULL;
1035:     }
1036:   }

1038:   /* solve phase */
1039:   /*-------------*/
1040:   mumps->id.job = JOB_SOLVE;
1041:   PetscMUMPS_c(mumps);
1042:   if (mumps->id.INFOG(1) < 0) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_LIB,"Error reported by MUMPS in solve phase: INFOG(1)=%d\n",mumps->id.INFOG(1));

1044:   /* scatter mumps distributed solution to petsc vector v_mpi, which shares local arrays with solution matrix X */
1045:   MatDenseGetArray(X,&array);
1046:   VecPlaceArray(v_mpi,array);

1048:   /* create scatter scat_sol */
1049:   MatGetOwnershipRanges(X,&rstart);
1050:   /* iidx: inverse of idx computed above, used for scattering mumps x_seq to petsc X */
1051:   iidx = idx;
1052:   k    = 0;
1053:   for (proc=0; proc<mumps->petsc_size; proc++){
1054:     for (j=0; j<nrhs; j++){
1055:       for (i=rstart[proc]; i<rstart[proc+1]; i++) iidx[j*M + i] = k++;
1056:     }
1057:   }

1059:   PetscMalloc1(nlsol_loc,&idxx);
1060:   ISCreateStride(PETSC_COMM_SELF,nlsol_loc,0,1,&is_from);
1061:   for (i=0; i<lsol_loc; i++) {
1062:     isol_loc[i] -= 1; /* change Fortran style to C style */
1063:     idxx[i] = iidx[isol_loc[i]];
1064:     for (j=1; j<nrhs; j++){
1065:       idxx[j*lsol_loc+i] = iidx[isol_loc[i]+j*M];
1066:     }
1067:   }
1068:   ISCreateGeneral(PETSC_COMM_SELF,nlsol_loc,idxx,PETSC_COPY_VALUES,&is_to);
1069:   VecScatterCreate(x_seq,is_from,v_mpi,is_to,&scat_sol);
1070:   VecScatterBegin(scat_sol,x_seq,v_mpi,INSERT_VALUES,SCATTER_FORWARD);
1071:   ISDestroy(&is_from);
1072:   ISDestroy(&is_to);
1073:   VecScatterEnd(scat_sol,x_seq,v_mpi,INSERT_VALUES,SCATTER_FORWARD);
1074:   MatDenseRestoreArray(X,&array);

1076:   /* free spaces */
1077:   mumps->id.sol_loc  = sol_loc_save;
1078:   mumps->id.isol_loc = isol_loc_save;

1080:   PetscFree2(sol_loc,isol_loc);
1081:   PetscFree(idx);
1082:   PetscFree(idxx);
1083:   VecDestroy(&x_seq);
1084:   VecDestroy(&v_mpi);
1085:   if (Bt) {
1086:     if (!mumps->myid) {
1087:       b = (Mat_MPIAIJ*)Bt->data;
1088:       MatSeqAIJRestoreArray(b->A,&aa);
1089:       MatRestoreRowIJ(b->A,1,PETSC_FALSE,PETSC_FALSE,&spnr,(const PetscInt**)&ia,(const PetscInt**)&ja,&flg);
1090:       if (!flg) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONG,"Cannot restore IJ structure");
1091:     }
1092:   } else {
1093:     VecDestroy(&b_seq);
1094:     VecScatterDestroy(&scat_rhs);
1095:   }
1096:   VecScatterDestroy(&scat_sol);
1097:   PetscLogFlops(2.0*nrhs*mumps->id.RINFO(3));
1098:   return(0);
1099: }

1101: PetscErrorCode MatMatTransposeSolve_MUMPS(Mat A,Mat Bt,Mat X)
1102: {
1104:   PetscBool      flg;
1105:   Mat            B;

1108:   PetscObjectTypeCompareAny((PetscObject)Bt,&flg,MATSEQAIJ,MATMPIAIJ,NULL);
1109:   if (!flg) SETERRQ(PetscObjectComm((PetscObject)Bt),PETSC_ERR_ARG_WRONG,"Matrix Bt must be MATAIJ matrix");

1111:   /* Create B=Bt^T that uses Bt's data structure */
1112:   MatCreateTranspose(Bt,&B);

1114:   MatMatSolve_MUMPS(A,B,X);
1115:   MatDestroy(&B);
1116:   return(0);
1117: }

1119: #if !defined(PETSC_USE_COMPLEX)
1120: /*
1121:   input:
1122:    F:        numeric factor
1123:   output:
1124:    nneg:     total number of negative pivots
1125:    nzero:    total number of zero pivots
1126:    npos:     (global dimension of F) - nneg - nzero
1127: */
1128: PetscErrorCode MatGetInertia_SBAIJMUMPS(Mat F,int *nneg,int *nzero,int *npos)
1129: {
1130:   Mat_MUMPS      *mumps =(Mat_MUMPS*)F->data;
1132:   PetscMPIInt    size;

1135:   MPI_Comm_size(PetscObjectComm((PetscObject)F),&size);
1136:   /* MUMPS 4.3.1 calls ScaLAPACK when ICNTL(13)=0 (default), which does not offer the possibility to compute the inertia of a dense matrix. Set ICNTL(13)=1 to skip ScaLAPACK */
1137:   if (size > 1 && mumps->id.ICNTL(13) != 1) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONG,"ICNTL(13)=%d. -mat_mumps_icntl_13 must be set as 1 for correct global matrix inertia\n",mumps->id.INFOG(13));

1139:   if (nneg) *nneg = mumps->id.INFOG(12);
1140:   if (nzero || npos) {
1141:     if (mumps->id.ICNTL(24) != 1) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONG,"-mat_mumps_icntl_24 must be set as 1 for null pivot row detection");
1142:     if (nzero) *nzero = mumps->id.INFOG(28);
1143:     if (npos) *npos   = F->rmap->N - (mumps->id.INFOG(12) + mumps->id.INFOG(28));
1144:   }
1145:   return(0);
1146: }
1147: #endif

1149: PetscErrorCode MatMumpsGatherNonzerosOnMaster(MatReuse reuse,Mat_MUMPS *mumps)
1150: {
1152:   PetscInt       i,nz=0,*irn,*jcn=0;
1153:   PetscScalar    *val=0;
1154:   PetscMPIInt    mpinz,*recvcount=NULL,*displs=NULL;

1157:   if (mumps->omp_comm_size > 1) {
1158:     if (reuse == MAT_INITIAL_MATRIX) {
1159:       /* master first gathers counts of nonzeros to receive */
1160:       if (mumps->is_omp_master) { PetscMalloc2(mumps->omp_comm_size,&recvcount,mumps->omp_comm_size,&displs); }
1161:       PetscMPIIntCast(mumps->nz,&mpinz);
1162:       MPI_Gather(&mpinz,1,MPI_INT,recvcount,1,MPI_INT,0/*root*/,mumps->omp_comm);

1164:       /* master allocates memory to receive nonzeros */
1165:       if (mumps->is_omp_master) {
1166:         displs[0] = 0;
1167:         for (i=1; i<mumps->omp_comm_size; i++) displs[i] = displs[i-1] + recvcount[i-1];
1168:         nz   = displs[mumps->omp_comm_size-1] + recvcount[mumps->omp_comm_size-1];
1169:         PetscMalloc(2*nz*sizeof(PetscInt)+nz*sizeof(PetscScalar),&irn);
1170:         jcn  = irn + nz;
1171:         val  = (PetscScalar*)(jcn + nz);
1172:       }

1174:       /* save the gatherv plan */
1175:       mumps->mpinz     = mpinz; /* used as send count */
1176:       mumps->recvcount = recvcount;
1177:       mumps->displs    = displs;

1179:       /* master gathers nonzeros */
1180:       MPI_Gatherv(mumps->irn,mpinz,MPIU_INT,irn,mumps->recvcount,mumps->displs,MPIU_INT,0/*root*/,mumps->omp_comm);
1181:       MPI_Gatherv(mumps->jcn,mpinz,MPIU_INT,jcn,mumps->recvcount,mumps->displs,MPIU_INT,0/*root*/,mumps->omp_comm);
1182:       MPI_Gatherv(mumps->val,mpinz,MPIU_SCALAR,val,mumps->recvcount,mumps->displs,MPIU_SCALAR,0/*root*/,mumps->omp_comm);

1184:       /* master frees its row/col/val and replaces them with bigger arrays */
1185:       if (mumps->is_omp_master) {
1186:         PetscFree(mumps->irn); /* irn/jcn/val are allocated together so free only irn */
1187:         mumps->nz  = nz; /* it is a sum of mpinz over omp_comm */
1188:         mumps->irn = irn;
1189:         mumps->jcn = jcn;
1190:         mumps->val = val;
1191:       }
1192:     } else {
1193:       MPI_Gatherv((mumps->is_omp_master?MPI_IN_PLACE:mumps->val),mumps->mpinz,MPIU_SCALAR,mumps->val,mumps->recvcount,mumps->displs,MPIU_SCALAR,0/*root*/,mumps->omp_comm);
1194:     }
1195:   }
1196:   return(0);
1197: }

1199: PetscErrorCode MatFactorNumeric_MUMPS(Mat F,Mat A,const MatFactorInfo *info)
1200: {
1201:   Mat_MUMPS      *mumps =(Mat_MUMPS*)(F)->data;
1203:   PetscBool      isMPIAIJ;

1206:   if (mumps->id.INFOG(1) < 0) {
1207:     if (mumps->id.INFOG(1) == -6) {
1208:       PetscInfo2(A,"MatFactorNumeric is called with singular matrix structure, INFOG(1)=%d, INFO(2)=%d\n",mumps->id.INFOG(1),mumps->id.INFO(2));
1209:     }
1210:     PetscInfo2(A,"MatFactorNumeric is called after analysis phase fails, INFOG(1)=%d, INFO(2)=%d\n",mumps->id.INFOG(1),mumps->id.INFO(2));
1211:     return(0);
1212:   }

1214:   (*mumps->ConvertToTriples)(A, 1, MAT_REUSE_MATRIX, &mumps->nz, &mumps->irn, &mumps->jcn, &mumps->val);
1215:   MatMumpsGatherNonzerosOnMaster(MAT_REUSE_MATRIX,mumps);

1217:   /* numerical factorization phase */
1218:   /*-------------------------------*/
1219:   mumps->id.job = JOB_FACTNUMERIC;
1220:   if (!mumps->id.ICNTL(18)) { /* A is centralized */
1221:     if (!mumps->myid) {
1222:       mumps->id.a = (MumpsScalar*)mumps->val;
1223:     }
1224:   } else {
1225:     mumps->id.a_loc = (MumpsScalar*)mumps->val;
1226:   }
1227:   PetscMUMPS_c(mumps);
1228:   if (mumps->id.INFOG(1) < 0) {
1229:     if (A->erroriffailure) {
1230:       SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_LIB,"Error reported by MUMPS in numerical factorization phase: INFOG(1)=%d, INFO(2)=%d\n",mumps->id.INFOG(1),mumps->id.INFO(2));
1231:     } else {
1232:       if (mumps->id.INFOG(1) == -10) { /* numerically singular matrix */
1233:         PetscInfo2(F,"matrix is numerically singular, INFOG(1)=%d, INFO(2)=%d\n",mumps->id.INFOG(1),mumps->id.INFO(2));
1234:         F->factorerrortype = MAT_FACTOR_NUMERIC_ZEROPIVOT;
1235:       } else if (mumps->id.INFOG(1) == -13) {
1236:         PetscInfo2(F,"MUMPS in numerical factorization phase: INFOG(1)=%d, cannot allocate required memory %d megabytes\n",mumps->id.INFOG(1),mumps->id.INFO(2));
1237:         F->factorerrortype = MAT_FACTOR_OUTMEMORY;
1238:       } else if (mumps->id.INFOG(1) == -8 || mumps->id.INFOG(1) == -9 || (-16 < mumps->id.INFOG(1) && mumps->id.INFOG(1) < -10) ) {
1239:         PetscInfo2(F,"MUMPS in numerical factorization phase: INFOG(1)=%d, INFO(2)=%d, problem with workarray \n",mumps->id.INFOG(1),mumps->id.INFO(2));
1240:         F->factorerrortype = MAT_FACTOR_OUTMEMORY;
1241:       } else {
1242:         PetscInfo2(F,"MUMPS in numerical factorization phase: INFOG(1)=%d, INFO(2)=%d\n",mumps->id.INFOG(1),mumps->id.INFO(2));
1243:         F->factorerrortype = MAT_FACTOR_OTHER;
1244:       }
1245:     }
1246:   }
1247:   if (!mumps->myid && mumps->id.ICNTL(16) > 0) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_LIB,"  mumps->id.ICNTL(16):=%d\n",mumps->id.INFOG(16));

1249:   F->assembled    = PETSC_TRUE;
1250:   mumps->matstruc = SAME_NONZERO_PATTERN;
1251:   if (F->schur) { /* reset Schur status to unfactored */
1252:     if (mumps->id.ICNTL(19) == 1) { /* stored by rows */
1253:       mumps->id.ICNTL(19) = 2;
1254:       MatTranspose(F->schur,MAT_INPLACE_MATRIX,&F->schur);
1255:     }
1256:     MatFactorRestoreSchurComplement(F,NULL,MAT_FACTOR_SCHUR_UNFACTORED);
1257:   }

1259:   /* just to be sure that ICNTL(19) value returned by a call from MatMumpsGetIcntl is always consistent */
1260:   if (!mumps->sym && mumps->id.ICNTL(19) && mumps->id.ICNTL(19) != 1) mumps->id.ICNTL(19) = 3;

1262:   if (!mumps->is_omp_master) mumps->id.INFO(23) = 0;
1263:   if (mumps->petsc_size > 1) {
1264:     PetscInt    lsol_loc;
1265:     PetscScalar *sol_loc;

1267:     PetscObjectTypeCompare((PetscObject)A,MATMPIAIJ,&isMPIAIJ);

1269:     /* distributed solution; Create x_seq=sol_loc for repeated use */
1270:     if (mumps->x_seq) {
1271:       VecScatterDestroy(&mumps->scat_sol);
1272:       PetscFree2(mumps->id.sol_loc,mumps->id.isol_loc);
1273:       VecDestroy(&mumps->x_seq);
1274:     }
1275:     lsol_loc = mumps->id.INFO(23); /* length of sol_loc */
1276:     PetscMalloc2(lsol_loc,&sol_loc,lsol_loc,&mumps->id.isol_loc);
1277:     mumps->id.lsol_loc = lsol_loc;
1278:     mumps->id.sol_loc = (MumpsScalar*)sol_loc;
1279:     VecCreateSeqWithArray(PETSC_COMM_SELF,1,lsol_loc,sol_loc,&mumps->x_seq);
1280:   }
1281:   PetscLogFlops(mumps->id.RINFO(2));
1282:   return(0);
1283: }

1285: /* Sets MUMPS options from the options database */
1286: PetscErrorCode PetscSetMUMPSFromOptions(Mat F, Mat A)
1287: {
1288:   Mat_MUMPS      *mumps = (Mat_MUMPS*)F->data;
1290:   PetscInt       icntl,info[40],i,ninfo=40;
1291:   PetscBool      flg;

1294:   PetscOptionsBegin(PetscObjectComm((PetscObject)A),((PetscObject)A)->prefix,"MUMPS Options","Mat");
1295:   PetscOptionsInt("-mat_mumps_icntl_1","ICNTL(1): output stream for error messages","None",mumps->id.ICNTL(1),&icntl,&flg);
1296:   if (flg) mumps->id.ICNTL(1) = icntl;
1297:   PetscOptionsInt("-mat_mumps_icntl_2","ICNTL(2): output stream for diagnostic printing, statistics, and warning","None",mumps->id.ICNTL(2),&icntl,&flg);
1298:   if (flg) mumps->id.ICNTL(2) = icntl;
1299:   PetscOptionsInt("-mat_mumps_icntl_3","ICNTL(3): output stream for global information, collected on the host","None",mumps->id.ICNTL(3),&icntl,&flg);
1300:   if (flg) mumps->id.ICNTL(3) = icntl;

1302:   PetscOptionsInt("-mat_mumps_icntl_4","ICNTL(4): level of printing (0 to 4)","None",mumps->id.ICNTL(4),&icntl,&flg);
1303:   if (flg) mumps->id.ICNTL(4) = icntl;
1304:   if (mumps->id.ICNTL(4) || PetscLogPrintInfo) mumps->id.ICNTL(3) = 6; /* resume MUMPS default id.ICNTL(3) = 6 */

1306:   PetscOptionsInt("-mat_mumps_icntl_6","ICNTL(6): permutes to a zero-free diagonal and/or scale the matrix (0 to 7)","None",mumps->id.ICNTL(6),&icntl,&flg);
1307:   if (flg) mumps->id.ICNTL(6) = icntl;

1309:   PetscOptionsInt("-mat_mumps_icntl_7","ICNTL(7): computes a symmetric permutation in sequential analysis (0 to 7). 3=Scotch, 4=PORD, 5=Metis","None",mumps->id.ICNTL(7),&icntl,&flg);
1310:   if (flg) {
1311:     if (icntl== 1 && mumps->petsc_size > 1) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP,"pivot order be set by the user in PERM_IN -- not supported by the PETSc/MUMPS interface\n");
1312:     else mumps->id.ICNTL(7) = icntl;
1313:   }

1315:   PetscOptionsInt("-mat_mumps_icntl_8","ICNTL(8): scaling strategy (-2 to 8 or 77)","None",mumps->id.ICNTL(8),&mumps->id.ICNTL(8),NULL);
1316:   /* PetscOptionsInt("-mat_mumps_icntl_9","ICNTL(9): computes the solution using A or A^T","None",mumps->id.ICNTL(9),&mumps->id.ICNTL(9),NULL); handled by MatSolveTranspose_MUMPS() */
1317:   PetscOptionsInt("-mat_mumps_icntl_10","ICNTL(10): max num of refinements","None",mumps->id.ICNTL(10),&mumps->id.ICNTL(10),NULL);
1318:   PetscOptionsInt("-mat_mumps_icntl_11","ICNTL(11): statistics related to an error analysis (via -ksp_view)","None",mumps->id.ICNTL(11),&mumps->id.ICNTL(11),NULL);
1319:   PetscOptionsInt("-mat_mumps_icntl_12","ICNTL(12): an ordering strategy for symmetric matrices (0 to 3)","None",mumps->id.ICNTL(12),&mumps->id.ICNTL(12),NULL);
1320:   PetscOptionsInt("-mat_mumps_icntl_13","ICNTL(13): parallelism of the root node (enable ScaLAPACK) and its splitting","None",mumps->id.ICNTL(13),&mumps->id.ICNTL(13),NULL);
1321:   PetscOptionsInt("-mat_mumps_icntl_14","ICNTL(14): percentage increase in the estimated working space","None",mumps->id.ICNTL(14),&mumps->id.ICNTL(14),NULL);
1322:   PetscOptionsInt("-mat_mumps_icntl_19","ICNTL(19): computes the Schur complement","None",mumps->id.ICNTL(19),&mumps->id.ICNTL(19),NULL);
1323:   if (mumps->id.ICNTL(19) <= 0 || mumps->id.ICNTL(19) > 3) { /* reset any schur data (if any) */
1324:     MatDestroy(&F->schur);
1325:     MatMumpsResetSchur_Private(mumps);
1326:   }
1327:   /* PetscOptionsInt("-mat_mumps_icntl_20","ICNTL(20): the format (dense or sparse) of the right-hand sides","None",mumps->id.ICNTL(20),&mumps->id.ICNTL(20),NULL); -- sparse rhs is not supported in PETSc API */
1328:   /* PetscOptionsInt("-mat_mumps_icntl_21","ICNTL(21): the distribution (centralized or distributed) of the solution vectors","None",mumps->id.ICNTL(21),&mumps->id.ICNTL(21),NULL); we only use distributed solution vector */

1330:   PetscOptionsInt("-mat_mumps_icntl_22","ICNTL(22): in-core/out-of-core factorization and solve (0 or 1)","None",mumps->id.ICNTL(22),&mumps->id.ICNTL(22),NULL);
1331:   PetscOptionsInt("-mat_mumps_icntl_23","ICNTL(23): max size of the working memory (MB) that can allocate per processor","None",mumps->id.ICNTL(23),&mumps->id.ICNTL(23),NULL);
1332:   PetscOptionsInt("-mat_mumps_icntl_24","ICNTL(24): detection of null pivot rows (0 or 1)","None",mumps->id.ICNTL(24),&mumps->id.ICNTL(24),NULL);
1333:   if (mumps->id.ICNTL(24)) {
1334:     mumps->id.ICNTL(13) = 1; /* turn-off ScaLAPACK to help with the correct detection of null pivots */
1335:   }

1337:   PetscOptionsInt("-mat_mumps_icntl_25","ICNTL(25): computes a solution of a deficient matrix and a null space basis","None",mumps->id.ICNTL(25),&mumps->id.ICNTL(25),NULL);
1338:   PetscOptionsInt("-mat_mumps_icntl_26","ICNTL(26): drives the solution phase if a Schur complement matrix","None",mumps->id.ICNTL(26),&mumps->id.ICNTL(26),NULL);
1339:   PetscOptionsInt("-mat_mumps_icntl_27","ICNTL(27): the blocking size for multiple right-hand sides","None",mumps->id.ICNTL(27),&mumps->id.ICNTL(27),NULL);
1340:   PetscOptionsInt("-mat_mumps_icntl_28","ICNTL(28): use 1 for sequential analysis and ictnl(7) ordering, or 2 for parallel analysis and ictnl(29) ordering","None",mumps->id.ICNTL(28),&mumps->id.ICNTL(28),NULL);
1341:   PetscOptionsInt("-mat_mumps_icntl_29","ICNTL(29): parallel ordering 1 = ptscotch, 2 = parmetis","None",mumps->id.ICNTL(29),&mumps->id.ICNTL(29),NULL);
1342:   /* PetscOptionsInt("-mat_mumps_icntl_30","ICNTL(30): compute user-specified set of entries in inv(A)","None",mumps->id.ICNTL(30),&mumps->id.ICNTL(30),NULL); */ /* call MatMumpsGetInverse() directly */
1343:   PetscOptionsInt("-mat_mumps_icntl_31","ICNTL(31): indicates which factors may be discarded during factorization","None",mumps->id.ICNTL(31),&mumps->id.ICNTL(31),NULL);
1344:   /* PetscOptionsInt("-mat_mumps_icntl_32","ICNTL(32): performs the forward elemination of the right-hand sides during factorization","None",mumps->id.ICNTL(32),&mumps->id.ICNTL(32),NULL);  -- not supported by PETSc API */
1345:   PetscOptionsInt("-mat_mumps_icntl_33","ICNTL(33): compute determinant","None",mumps->id.ICNTL(33),&mumps->id.ICNTL(33),NULL);
1346:   PetscOptionsInt("-mat_mumps_icntl_35","ICNTL(35): activates Block Lock Rank (BLR) based factorization","None",mumps->id.ICNTL(35),&mumps->id.ICNTL(35),NULL);

1348:   PetscOptionsReal("-mat_mumps_cntl_1","CNTL(1): relative pivoting threshold","None",mumps->id.CNTL(1),&mumps->id.CNTL(1),NULL);
1349:   PetscOptionsReal("-mat_mumps_cntl_2","CNTL(2): stopping criterion of refinement","None",mumps->id.CNTL(2),&mumps->id.CNTL(2),NULL);
1350:   PetscOptionsReal("-mat_mumps_cntl_3","CNTL(3): absolute pivoting threshold","None",mumps->id.CNTL(3),&mumps->id.CNTL(3),NULL);
1351:   PetscOptionsReal("-mat_mumps_cntl_4","CNTL(4): value for static pivoting","None",mumps->id.CNTL(4),&mumps->id.CNTL(4),NULL);
1352:   PetscOptionsReal("-mat_mumps_cntl_5","CNTL(5): fixation for null pivots","None",mumps->id.CNTL(5),&mumps->id.CNTL(5),NULL);
1353:   PetscOptionsReal("-mat_mumps_cntl_7","CNTL(7): dropping parameter used during BLR","None",mumps->id.CNTL(7),&mumps->id.CNTL(7),NULL);

1355:   PetscOptionsString("-mat_mumps_ooc_tmpdir", "out of core directory", "None", mumps->id.ooc_tmpdir, mumps->id.ooc_tmpdir, 256, NULL);

1357:   PetscOptionsIntArray("-mat_mumps_view_info","request INFO local to each processor","",info,&ninfo,NULL);
1358:   if (ninfo) {
1359:     if (ninfo > 40) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_USER,"number of INFO %d must <= 40\n",ninfo);
1360:     PetscMalloc1(ninfo,&mumps->info);
1361:     mumps->ninfo = ninfo;
1362:     for (i=0; i<ninfo; i++) {
1363:       if (info[i] < 0 || info[i]>40) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_USER,"index of INFO %d must between 1 and 40\n",ninfo);
1364:       else  mumps->info[i] = info[i];
1365:     }
1366:   }

1368:   PetscOptionsEnd();
1369:   return(0);
1370: }

1372: PetscErrorCode PetscInitializeMUMPS(Mat A,Mat_MUMPS *mumps)
1373: {
1375:   PetscInt       nthreads=0;

1378:   mumps->petsc_comm = PetscObjectComm((PetscObject)A);
1379:   MPI_Comm_size(mumps->petsc_comm,&mumps->petsc_size);
1380:   MPI_Comm_rank(mumps->petsc_comm,&mumps->myid); /* so that code like "if (!myid)" still works even if mumps_comm is different */

1382:   PetscOptionsHasName(NULL,NULL,"-mat_mumps_use_omp_threads",&mumps->use_petsc_omp_support);
1383:   if (mumps->use_petsc_omp_support) nthreads = -1; /* -1 will let PetscOmpCtrlCreate() guess a proper value when user did not supply one */
1384:   PetscOptionsGetInt(NULL,NULL,"-mat_mumps_use_omp_threads",&nthreads,NULL);
1385:   if (mumps->use_petsc_omp_support) {
1386: #if defined(PETSC_HAVE_OPENMP_SUPPORT)
1387:     PetscOmpCtrlCreate(mumps->petsc_comm,nthreads,&mumps->omp_ctrl);
1388:     PetscOmpCtrlGetOmpComms(mumps->omp_ctrl,&mumps->omp_comm,&mumps->mumps_comm,&mumps->is_omp_master);
1389: #else
1390:     SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP_SYS,"the system does not have PETSc OpenMP support but you added the -mat_mumps_use_omp_threads option. Configure PETSc with --with-openmp --download-hwloc (or --with-hwloc) to enable it, see more in MATSOLVERMUMPS manual\n");
1391: #endif
1392:   } else {
1393:     mumps->omp_comm      = PETSC_COMM_SELF;
1394:     mumps->mumps_comm    = mumps->petsc_comm;
1395:     mumps->is_omp_master = PETSC_TRUE;
1396:   }
1397:   MPI_Comm_size(mumps->omp_comm,&mumps->omp_comm_size);

1399:   mumps->id.comm_fortran = MPI_Comm_c2f(mumps->mumps_comm);
1400:   mumps->id.job = JOB_INIT;
1401:   mumps->id.par = 1;  /* host participates factorizaton and solve */
1402:   mumps->id.sym = mumps->sym;

1404:   PetscMUMPS_c(mumps);

1406:   /* copy MUMPS default control values from master to slaves. Although slaves do not call MUMPS, they may access these values in code.
1407:      For example, ICNTL(9) is initialized to 1 by MUMPS and slaves check ICNTL(9) in MatSolve_MUMPS.
1408:    */
1409:   MPI_Bcast(mumps->id.icntl,40,MPIU_INT, 0,mumps->omp_comm); /* see MUMPS-5.1.2 Manual Section 9 */
1410:   MPI_Bcast(mumps->id.cntl, 15,MPIU_REAL,0,mumps->omp_comm);

1412:   mumps->scat_rhs     = NULL;
1413:   mumps->scat_sol     = NULL;

1415:   /* set PETSc-MUMPS default options - override MUMPS default */
1416:   mumps->id.ICNTL(3) = 0;
1417:   mumps->id.ICNTL(4) = 0;
1418:   if (mumps->petsc_size == 1) {
1419:     mumps->id.ICNTL(18) = 0;   /* centralized assembled matrix input */
1420:   } else {
1421:     mumps->id.ICNTL(18) = 3;   /* distributed assembled matrix input */
1422:     mumps->id.ICNTL(20) = 0;   /* rhs is in dense format */
1423:     mumps->id.ICNTL(21) = 1;   /* distributed solution */
1424:   }

1426:   /* schur */
1427:   mumps->id.size_schur      = 0;
1428:   mumps->id.listvar_schur   = NULL;
1429:   mumps->id.schur           = NULL;
1430:   mumps->sizeredrhs         = 0;
1431:   mumps->schur_sol          = NULL;
1432:   mumps->schur_sizesol      = 0;
1433:   return(0);
1434: }

1436: PetscErrorCode MatFactorSymbolic_MUMPS_ReportIfError(Mat F,Mat A,const MatFactorInfo *info,Mat_MUMPS *mumps)
1437: {

1441:   MPI_Bcast(mumps->id.infog, 40,MPIU_INT, 0,mumps->omp_comm); /* see MUMPS-5.1.2 manual p82 */
1442:   MPI_Bcast(mumps->id.rinfog,20,MPIU_REAL,0,mumps->omp_comm);
1443:   if (mumps->id.INFOG(1) < 0) {
1444:     if (A->erroriffailure) {
1445:       SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_LIB,"Error reported by MUMPS in analysis phase: INFOG(1)=%d\n",mumps->id.INFOG(1));
1446:     } else {
1447:       if (mumps->id.INFOG(1) == -6) {
1448:         PetscInfo2(F,"matrix is singular in structure, INFOG(1)=%d, INFO(2)=%d\n",mumps->id.INFOG(1),mumps->id.INFO(2));
1449:         F->factorerrortype = MAT_FACTOR_STRUCT_ZEROPIVOT;
1450:       } else if (mumps->id.INFOG(1) == -5 || mumps->id.INFOG(1) == -7) {
1451:         PetscInfo2(F,"problem of workspace, INFOG(1)=%d, INFO(2)=%d\n",mumps->id.INFOG(1),mumps->id.INFO(2));
1452:         F->factorerrortype = MAT_FACTOR_OUTMEMORY;
1453:       } else {
1454:         PetscInfo2(F,"Error reported by MUMPS in analysis phase: INFOG(1)=%d, INFO(2)=%d\n",mumps->id.INFOG(1),mumps->id.INFO(2));
1455:         F->factorerrortype = MAT_FACTOR_OTHER;
1456:       }
1457:     }
1458:   }
1459:   return(0);
1460: }

1462: /* Note Petsc r(=c) permutation is used when mumps->id.ICNTL(7)==1 with centralized assembled matrix input; otherwise r and c are ignored */
1463: PetscErrorCode MatLUFactorSymbolic_AIJMUMPS(Mat F,Mat A,IS r,IS c,const MatFactorInfo *info)
1464: {
1465:   Mat_MUMPS      *mumps = (Mat_MUMPS*)F->data;
1467:   Vec            b;
1468:   IS             is_iden;
1469:   const PetscInt M = A->rmap->N;

1472:   mumps->matstruc = DIFFERENT_NONZERO_PATTERN;

1474:   /* Set MUMPS options from the options database */
1475:   PetscSetMUMPSFromOptions(F,A);

1477:   (*mumps->ConvertToTriples)(A, 1, MAT_INITIAL_MATRIX, &mumps->nz, &mumps->irn, &mumps->jcn, &mumps->val);
1478:   MatMumpsGatherNonzerosOnMaster(MAT_INITIAL_MATRIX,mumps);

1480:   /* analysis phase */
1481:   /*----------------*/
1482:   mumps->id.job = JOB_FACTSYMBOLIC;
1483:   mumps->id.n   = M;
1484:   switch (mumps->id.ICNTL(18)) {
1485:   case 0:  /* centralized assembled matrix input */
1486:     if (!mumps->myid) {
1487:       mumps->id.nz =mumps->nz; mumps->id.irn=mumps->irn; mumps->id.jcn=mumps->jcn;
1488:       if (mumps->id.ICNTL(6)>1) {
1489:         mumps->id.a = (MumpsScalar*)mumps->val;
1490:       }
1491:       if (mumps->id.ICNTL(7) == 1) { /* use user-provide matrix ordering - assuming r = c ordering */
1492:         /*
1493:         PetscBool      flag;
1494:         ISEqual(r,c,&flag);
1495:         if (!flag) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_USER,"row_perm != col_perm");
1496:         ISView(r,PETSC_VIEWER_STDOUT_SELF);
1497:          */
1498:         if (!mumps->myid) {
1499:           const PetscInt *idx;
1500:           PetscInt       i,*perm_in;

1502:           PetscMalloc1(M,&perm_in);
1503:           ISGetIndices(r,&idx);

1505:           mumps->id.perm_in = perm_in;
1506:           for (i=0; i<M; i++) perm_in[i] = idx[i]+1; /* perm_in[]: start from 1, not 0! */
1507:           ISRestoreIndices(r,&idx);
1508:         }
1509:       }
1510:     }
1511:     break;
1512:   case 3:  /* distributed assembled matrix input (size>1) */
1513:     mumps->id.nz_loc = mumps->nz;
1514:     mumps->id.irn_loc=mumps->irn; mumps->id.jcn_loc=mumps->jcn;
1515:     if (mumps->id.ICNTL(6)>1) {
1516:       mumps->id.a_loc = (MumpsScalar*)mumps->val;
1517:     }
1518:     /* MUMPS only supports centralized rhs. Create scatter scat_rhs for repeated use in MatSolve() */
1519:     if (!mumps->myid) {
1520:       VecCreateSeq(PETSC_COMM_SELF,A->rmap->N,&mumps->b_seq);
1521:       ISCreateStride(PETSC_COMM_SELF,A->rmap->N,0,1,&is_iden);
1522:     } else {
1523:       VecCreateSeq(PETSC_COMM_SELF,0,&mumps->b_seq);
1524:       ISCreateStride(PETSC_COMM_SELF,0,0,1,&is_iden);
1525:     }
1526:     MatCreateVecs(A,NULL,&b);
1527:     VecScatterCreate(b,is_iden,mumps->b_seq,is_iden,&mumps->scat_rhs);
1528:     ISDestroy(&is_iden);
1529:     VecDestroy(&b);
1530:     break;
1531:   }
1532:   PetscMUMPS_c(mumps);
1533:   MatFactorSymbolic_MUMPS_ReportIfError(F,A,info,mumps);

1535:   F->ops->lufactornumeric = MatFactorNumeric_MUMPS;
1536:   F->ops->solve           = MatSolve_MUMPS;
1537:   F->ops->solvetranspose  = MatSolveTranspose_MUMPS;
1538:   F->ops->matsolve        = MatMatSolve_MUMPS;
1539:   F->ops->mattransposesolve = MatMatTransposeSolve_MUMPS;
1540:   return(0);
1541: }

1543: /* Note the Petsc r and c permutations are ignored */
1544: PetscErrorCode MatLUFactorSymbolic_BAIJMUMPS(Mat F,Mat A,IS r,IS c,const MatFactorInfo *info)
1545: {
1546:   Mat_MUMPS      *mumps = (Mat_MUMPS*)F->data;
1548:   Vec            b;
1549:   IS             is_iden;
1550:   const PetscInt M = A->rmap->N;

1553:   mumps->matstruc = DIFFERENT_NONZERO_PATTERN;

1555:   /* Set MUMPS options from the options database */
1556:   PetscSetMUMPSFromOptions(F,A);

1558:   (*mumps->ConvertToTriples)(A, 1, MAT_INITIAL_MATRIX, &mumps->nz, &mumps->irn, &mumps->jcn, &mumps->val);
1559:   MatMumpsGatherNonzerosOnMaster(MAT_INITIAL_MATRIX,mumps);

1561:   /* analysis phase */
1562:   /*----------------*/
1563:   mumps->id.job = JOB_FACTSYMBOLIC;
1564:   mumps->id.n   = M;
1565:   switch (mumps->id.ICNTL(18)) {
1566:   case 0:  /* centralized assembled matrix input */
1567:     if (!mumps->myid) {
1568:       mumps->id.nz =mumps->nz; mumps->id.irn=mumps->irn; mumps->id.jcn=mumps->jcn;
1569:       if (mumps->id.ICNTL(6)>1) {
1570:         mumps->id.a = (MumpsScalar*)mumps->val;
1571:       }
1572:     }
1573:     break;
1574:   case 3:  /* distributed assembled matrix input (size>1) */
1575:     mumps->id.nz_loc = mumps->nz;
1576:     mumps->id.irn_loc=mumps->irn; mumps->id.jcn_loc=mumps->jcn;
1577:     if (mumps->id.ICNTL(6)>1) {
1578:       mumps->id.a_loc = (MumpsScalar*)mumps->val;
1579:     }
1580:     /* MUMPS only supports centralized rhs. Create scatter scat_rhs for repeated use in MatSolve() */
1581:     if (!mumps->myid) {
1582:       VecCreateSeq(PETSC_COMM_SELF,A->cmap->N,&mumps->b_seq);
1583:       ISCreateStride(PETSC_COMM_SELF,A->cmap->N,0,1,&is_iden);
1584:     } else {
1585:       VecCreateSeq(PETSC_COMM_SELF,0,&mumps->b_seq);
1586:       ISCreateStride(PETSC_COMM_SELF,0,0,1,&is_iden);
1587:     }
1588:     MatCreateVecs(A,NULL,&b);
1589:     VecScatterCreate(b,is_iden,mumps->b_seq,is_iden,&mumps->scat_rhs);
1590:     ISDestroy(&is_iden);
1591:     VecDestroy(&b);
1592:     break;
1593:   }
1594:   PetscMUMPS_c(mumps);
1595:   MatFactorSymbolic_MUMPS_ReportIfError(F,A,info,mumps);

1597:   F->ops->lufactornumeric = MatFactorNumeric_MUMPS;
1598:   F->ops->solve           = MatSolve_MUMPS;
1599:   F->ops->solvetranspose  = MatSolveTranspose_MUMPS;
1600:   return(0);
1601: }

1603: /* Note the Petsc r permutation and factor info are ignored */
1604: PetscErrorCode MatCholeskyFactorSymbolic_MUMPS(Mat F,Mat A,IS r,const MatFactorInfo *info)
1605: {
1606:   Mat_MUMPS      *mumps = (Mat_MUMPS*)F->data;
1608:   Vec            b;
1609:   IS             is_iden;
1610:   const PetscInt M = A->rmap->N;

1613:   mumps->matstruc = DIFFERENT_NONZERO_PATTERN;

1615:   /* Set MUMPS options from the options database */
1616:   PetscSetMUMPSFromOptions(F,A);

1618:   (*mumps->ConvertToTriples)(A, 1, MAT_INITIAL_MATRIX, &mumps->nz, &mumps->irn, &mumps->jcn, &mumps->val);
1619:   MatMumpsGatherNonzerosOnMaster(MAT_INITIAL_MATRIX,mumps);

1621:   /* analysis phase */
1622:   /*----------------*/
1623:   mumps->id.job = JOB_FACTSYMBOLIC;
1624:   mumps->id.n   = M;
1625:   switch (mumps->id.ICNTL(18)) {
1626:   case 0:  /* centralized assembled matrix input */
1627:     if (!mumps->myid) {
1628:       mumps->id.nz =mumps->nz; mumps->id.irn=mumps->irn; mumps->id.jcn=mumps->jcn;
1629:       if (mumps->id.ICNTL(6)>1) {
1630:         mumps->id.a = (MumpsScalar*)mumps->val;
1631:       }
1632:     }
1633:     break;
1634:   case 3:  /* distributed assembled matrix input (size>1) */
1635:     mumps->id.nz_loc = mumps->nz;
1636:     mumps->id.irn_loc=mumps->irn; mumps->id.jcn_loc=mumps->jcn;
1637:     if (mumps->id.ICNTL(6)>1) {
1638:       mumps->id.a_loc = (MumpsScalar*)mumps->val;
1639:     }
1640:     /* MUMPS only supports centralized rhs. Create scatter scat_rhs for repeated use in MatSolve() */
1641:     if (!mumps->myid) {
1642:       VecCreateSeq(PETSC_COMM_SELF,A->cmap->N,&mumps->b_seq);
1643:       ISCreateStride(PETSC_COMM_SELF,A->cmap->N,0,1,&is_iden);
1644:     } else {
1645:       VecCreateSeq(PETSC_COMM_SELF,0,&mumps->b_seq);
1646:       ISCreateStride(PETSC_COMM_SELF,0,0,1,&is_iden);
1647:     }
1648:     MatCreateVecs(A,NULL,&b);
1649:     VecScatterCreate(b,is_iden,mumps->b_seq,is_iden,&mumps->scat_rhs);
1650:     ISDestroy(&is_iden);
1651:     VecDestroy(&b);
1652:     break;
1653:   }
1654:   PetscMUMPS_c(mumps);
1655:   MatFactorSymbolic_MUMPS_ReportIfError(F,A,info,mumps);

1657:   F->ops->choleskyfactornumeric = MatFactorNumeric_MUMPS;
1658:   F->ops->solve                 = MatSolve_MUMPS;
1659:   F->ops->solvetranspose        = MatSolve_MUMPS;
1660:   F->ops->matsolve              = MatMatSolve_MUMPS;
1661: #if defined(PETSC_USE_COMPLEX)
1662:   F->ops->getinertia = NULL;
1663: #else
1664:   F->ops->getinertia = MatGetInertia_SBAIJMUMPS;
1665: #endif
1666:   return(0);
1667: }

1669: PetscErrorCode MatView_MUMPS(Mat A,PetscViewer viewer)
1670: {
1671:   PetscErrorCode    ierr;
1672:   PetscBool         iascii;
1673:   PetscViewerFormat format;
1674:   Mat_MUMPS         *mumps=(Mat_MUMPS*)A->data;

1677:   /* check if matrix is mumps type */
1678:   if (A->ops->solve != MatSolve_MUMPS) return(0);

1680:   PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERASCII,&iascii);
1681:   if (iascii) {
1682:     PetscViewerGetFormat(viewer,&format);
1683:     if (format == PETSC_VIEWER_ASCII_INFO) {
1684:       PetscViewerASCIIPrintf(viewer,"MUMPS run parameters:\n");
1685:       PetscViewerASCIIPrintf(viewer,"  SYM (matrix type):                   %d \n",mumps->id.sym);
1686:       PetscViewerASCIIPrintf(viewer,"  PAR (host participation):            %d \n",mumps->id.par);
1687:       PetscViewerASCIIPrintf(viewer,"  ICNTL(1) (output for error):         %d \n",mumps->id.ICNTL(1));
1688:       PetscViewerASCIIPrintf(viewer,"  ICNTL(2) (output of diagnostic msg): %d \n",mumps->id.ICNTL(2));
1689:       PetscViewerASCIIPrintf(viewer,"  ICNTL(3) (output for global info):   %d \n",mumps->id.ICNTL(3));
1690:       PetscViewerASCIIPrintf(viewer,"  ICNTL(4) (level of printing):        %d \n",mumps->id.ICNTL(4));
1691:       PetscViewerASCIIPrintf(viewer,"  ICNTL(5) (input mat struct):         %d \n",mumps->id.ICNTL(5));
1692:       PetscViewerASCIIPrintf(viewer,"  ICNTL(6) (matrix prescaling):        %d \n",mumps->id.ICNTL(6));
1693:       PetscViewerASCIIPrintf(viewer,"  ICNTL(7) (sequential matrix ordering):%d \n",mumps->id.ICNTL(7));
1694:       PetscViewerASCIIPrintf(viewer,"  ICNTL(8) (scaling strategy):        %d \n",mumps->id.ICNTL(8));
1695:       PetscViewerASCIIPrintf(viewer,"  ICNTL(10) (max num of refinements):  %d \n",mumps->id.ICNTL(10));
1696:       PetscViewerASCIIPrintf(viewer,"  ICNTL(11) (error analysis):          %d \n",mumps->id.ICNTL(11));
1697:       if (mumps->id.ICNTL(11)>0) {
1698:         PetscViewerASCIIPrintf(viewer,"    RINFOG(4) (inf norm of input mat):        %g\n",mumps->id.RINFOG(4));
1699:         PetscViewerASCIIPrintf(viewer,"    RINFOG(5) (inf norm of solution):         %g\n",mumps->id.RINFOG(5));
1700:         PetscViewerASCIIPrintf(viewer,"    RINFOG(6) (inf norm of residual):         %g\n",mumps->id.RINFOG(6));
1701:         PetscViewerASCIIPrintf(viewer,"    RINFOG(7),RINFOG(8) (backward error est): %g, %g\n",mumps->id.RINFOG(7),mumps->id.RINFOG(8));
1702:         PetscViewerASCIIPrintf(viewer,"    RINFOG(9) (error estimate):               %g \n",mumps->id.RINFOG(9));
1703:         PetscViewerASCIIPrintf(viewer,"    RINFOG(10),RINFOG(11)(condition numbers): %g, %g\n",mumps->id.RINFOG(10),mumps->id.RINFOG(11));
1704:       }
1705:       PetscViewerASCIIPrintf(viewer,"  ICNTL(12) (efficiency control):                         %d \n",mumps->id.ICNTL(12));
1706:       PetscViewerASCIIPrintf(viewer,"  ICNTL(13) (efficiency control):                         %d \n",mumps->id.ICNTL(13));
1707:       PetscViewerASCIIPrintf(viewer,"  ICNTL(14) (percentage of estimated workspace increase): %d \n",mumps->id.ICNTL(14));
1708:       /* ICNTL(15-17) not used */
1709:       PetscViewerASCIIPrintf(viewer,"  ICNTL(18) (input mat struct):                           %d \n",mumps->id.ICNTL(18));
1710:       PetscViewerASCIIPrintf(viewer,"  ICNTL(19) (Schur complement info):                      %d \n",mumps->id.ICNTL(19));
1711:       PetscViewerASCIIPrintf(viewer,"  ICNTL(20) (rhs sparse pattern):                         %d \n",mumps->id.ICNTL(20));
1712:       PetscViewerASCIIPrintf(viewer,"  ICNTL(21) (solution struct):                            %d \n",mumps->id.ICNTL(21));
1713:       PetscViewerASCIIPrintf(viewer,"  ICNTL(22) (in-core/out-of-core facility):               %d \n",mumps->id.ICNTL(22));
1714:       PetscViewerASCIIPrintf(viewer,"  ICNTL(23) (max size of memory can be allocated locally):%d \n",mumps->id.ICNTL(23));

1716:       PetscViewerASCIIPrintf(viewer,"  ICNTL(24) (detection of null pivot rows):               %d \n",mumps->id.ICNTL(24));
1717:       PetscViewerASCIIPrintf(viewer,"  ICNTL(25) (computation of a null space basis):          %d \n",mumps->id.ICNTL(25));
1718:       PetscViewerASCIIPrintf(viewer,"  ICNTL(26) (Schur options for rhs or solution):          %d \n",mumps->id.ICNTL(26));
1719:       PetscViewerASCIIPrintf(viewer,"  ICNTL(27) (experimental parameter):                     %d \n",mumps->id.ICNTL(27));
1720:       PetscViewerASCIIPrintf(viewer,"  ICNTL(28) (use parallel or sequential ordering):        %d \n",mumps->id.ICNTL(28));
1721:       PetscViewerASCIIPrintf(viewer,"  ICNTL(29) (parallel ordering):                          %d \n",mumps->id.ICNTL(29));

1723:       PetscViewerASCIIPrintf(viewer,"  ICNTL(30) (user-specified set of entries in inv(A)):    %d \n",mumps->id.ICNTL(30));
1724:       PetscViewerASCIIPrintf(viewer,"  ICNTL(31) (factors is discarded in the solve phase):    %d \n",mumps->id.ICNTL(31));
1725:       PetscViewerASCIIPrintf(viewer,"  ICNTL(33) (compute determinant):                        %d \n",mumps->id.ICNTL(33));
1726:       PetscViewerASCIIPrintf(viewer,"  ICNTL(35) (activate BLR based factorization):           %d \n",mumps->id.ICNTL(35));

1728:       PetscViewerASCIIPrintf(viewer,"  CNTL(1) (relative pivoting threshold):      %g \n",mumps->id.CNTL(1));
1729:       PetscViewerASCIIPrintf(viewer,"  CNTL(2) (stopping criterion of refinement): %g \n",mumps->id.CNTL(2));
1730:       PetscViewerASCIIPrintf(viewer,"  CNTL(3) (absolute pivoting threshold):      %g \n",mumps->id.CNTL(3));
1731:       PetscViewerASCIIPrintf(viewer,"  CNTL(4) (value of static pivoting):         %g \n",mumps->id.CNTL(4));
1732:       PetscViewerASCIIPrintf(viewer,"  CNTL(5) (fixation for null pivots):         %g \n",mumps->id.CNTL(5));
1733:       PetscViewerASCIIPrintf(viewer,"  CNTL(7) (dropping parameter for BLR):       %g \n",mumps->id.CNTL(7));

1735:       /* infomation local to each processor */
1736:       PetscViewerASCIIPrintf(viewer, "  RINFO(1) (local estimated flops for the elimination after analysis): \n");
1737:       PetscViewerASCIIPushSynchronized(viewer);
1738:       PetscViewerASCIISynchronizedPrintf(viewer,"    [%d] %g \n",mumps->myid,mumps->id.RINFO(1));
1739:       PetscViewerFlush(viewer);
1740:       PetscViewerASCIIPrintf(viewer, "  RINFO(2) (local estimated flops for the assembly after factorization): \n");
1741:       PetscViewerASCIISynchronizedPrintf(viewer,"    [%d]  %g \n",mumps->myid,mumps->id.RINFO(2));
1742:       PetscViewerFlush(viewer);
1743:       PetscViewerASCIIPrintf(viewer, "  RINFO(3) (local estimated flops for the elimination after factorization): \n");
1744:       PetscViewerASCIISynchronizedPrintf(viewer,"    [%d]  %g \n",mumps->myid,mumps->id.RINFO(3));
1745:       PetscViewerFlush(viewer);

1747:       PetscViewerASCIIPrintf(viewer, "  INFO(15) (estimated size of (in MB) MUMPS internal data for running numerical factorization): \n");
1748:       PetscViewerASCIISynchronizedPrintf(viewer,"  [%d] %d \n",mumps->myid,mumps->id.INFO(15));
1749:       PetscViewerFlush(viewer);

1751:       PetscViewerASCIIPrintf(viewer, "  INFO(16) (size of (in MB) MUMPS internal data used during numerical factorization): \n");
1752:       PetscViewerASCIISynchronizedPrintf(viewer,"    [%d] %d \n",mumps->myid,mumps->id.INFO(16));
1753:       PetscViewerFlush(viewer);

1755:       PetscViewerASCIIPrintf(viewer, "  INFO(23) (num of pivots eliminated on this processor after factorization): \n");
1756:       PetscViewerASCIISynchronizedPrintf(viewer,"    [%d] %d \n",mumps->myid,mumps->id.INFO(23));
1757:       PetscViewerFlush(viewer);

1759:       if (mumps->ninfo && mumps->ninfo <= 40){
1760:         PetscInt i;
1761:         for (i=0; i<mumps->ninfo; i++){
1762:           PetscViewerASCIIPrintf(viewer, "  INFO(%d): \n",mumps->info[i]);
1763:           PetscViewerASCIISynchronizedPrintf(viewer,"    [%d] %d \n",mumps->myid,mumps->id.INFO(mumps->info[i]));
1764:           PetscViewerFlush(viewer);
1765:         }
1766:       }
1767:       PetscViewerASCIIPopSynchronized(viewer);

1769:       if (!mumps->myid) { /* information from the host */
1770:         PetscViewerASCIIPrintf(viewer,"  RINFOG(1) (global estimated flops for the elimination after analysis): %g \n",mumps->id.RINFOG(1));
1771:         PetscViewerASCIIPrintf(viewer,"  RINFOG(2) (global estimated flops for the assembly after factorization): %g \n",mumps->id.RINFOG(2));
1772:         PetscViewerASCIIPrintf(viewer,"  RINFOG(3) (global estimated flops for the elimination after factorization): %g \n",mumps->id.RINFOG(3));
1773:         PetscViewerASCIIPrintf(viewer,"  (RINFOG(12) RINFOG(13))*2^INFOG(34) (determinant): (%g,%g)*(2^%d)\n",mumps->id.RINFOG(12),mumps->id.RINFOG(13),mumps->id.INFOG(34));

1775:         PetscViewerASCIIPrintf(viewer,"  INFOG(3) (estimated real workspace for factors on all processors after analysis): %d \n",mumps->id.INFOG(3));
1776:         PetscViewerASCIIPrintf(viewer,"  INFOG(4) (estimated integer workspace for factors on all processors after analysis): %d \n",mumps->id.INFOG(4));
1777:         PetscViewerASCIIPrintf(viewer,"  INFOG(5) (estimated maximum front size in the complete tree): %d \n",mumps->id.INFOG(5));
1778:         PetscViewerASCIIPrintf(viewer,"  INFOG(6) (number of nodes in the complete tree): %d \n",mumps->id.INFOG(6));
1779:         PetscViewerASCIIPrintf(viewer,"  INFOG(7) (ordering option effectively use after analysis): %d \n",mumps->id.INFOG(7));
1780:         PetscViewerASCIIPrintf(viewer,"  INFOG(8) (structural symmetry in percent of the permuted matrix after analysis): %d \n",mumps->id.INFOG(8));
1781:         PetscViewerASCIIPrintf(viewer,"  INFOG(9) (total real/complex workspace to store the matrix factors after factorization): %d \n",mumps->id.INFOG(9));
1782:         PetscViewerASCIIPrintf(viewer,"  INFOG(10) (total integer space store the matrix factors after factorization): %d \n",mumps->id.INFOG(10));
1783:         PetscViewerASCIIPrintf(viewer,"  INFOG(11) (order of largest frontal matrix after factorization): %d \n",mumps->id.INFOG(11));
1784:         PetscViewerASCIIPrintf(viewer,"  INFOG(12) (number of off-diagonal pivots): %d \n",mumps->id.INFOG(12));
1785:         PetscViewerASCIIPrintf(viewer,"  INFOG(13) (number of delayed pivots after factorization): %d \n",mumps->id.INFOG(13));
1786:         PetscViewerASCIIPrintf(viewer,"  INFOG(14) (number of memory compress after factorization): %d \n",mumps->id.INFOG(14));
1787:         PetscViewerASCIIPrintf(viewer,"  INFOG(15) (number of steps of iterative refinement after solution): %d \n",mumps->id.INFOG(15));
1788:         PetscViewerASCIIPrintf(viewer,"  INFOG(16) (estimated size (in MB) of all MUMPS internal data for factorization after analysis: value on the most memory consuming processor): %d \n",mumps->id.INFOG(16));
1789:         PetscViewerASCIIPrintf(viewer,"  INFOG(17) (estimated size of all MUMPS internal data for factorization after analysis: sum over all processors): %d \n",mumps->id.INFOG(17));
1790:         PetscViewerASCIIPrintf(viewer,"  INFOG(18) (size of all MUMPS internal data allocated during factorization: value on the most memory consuming processor): %d \n",mumps->id.INFOG(18));
1791:         PetscViewerASCIIPrintf(viewer,"  INFOG(19) (size of all MUMPS internal data allocated during factorization: sum over all processors): %d \n",mumps->id.INFOG(19));
1792:         PetscViewerASCIIPrintf(viewer,"  INFOG(20) (estimated number of entries in the factors): %d \n",mumps->id.INFOG(20));
1793:         PetscViewerASCIIPrintf(viewer,"  INFOG(21) (size in MB of memory effectively used during factorization - value on the most memory consuming processor): %d \n",mumps->id.INFOG(21));
1794:         PetscViewerASCIIPrintf(viewer,"  INFOG(22) (size in MB of memory effectively used during factorization - sum over all processors): %d \n",mumps->id.INFOG(22));
1795:         PetscViewerASCIIPrintf(viewer,"  INFOG(23) (after analysis: value of ICNTL(6) effectively used): %d \n",mumps->id.INFOG(23));
1796:         PetscViewerASCIIPrintf(viewer,"  INFOG(24) (after analysis: value of ICNTL(12) effectively used): %d \n",mumps->id.INFOG(24));
1797:         PetscViewerASCIIPrintf(viewer,"  INFOG(25) (after factorization: number of pivots modified by static pivoting): %d \n",mumps->id.INFOG(25));
1798:         PetscViewerASCIIPrintf(viewer,"  INFOG(28) (after factorization: number of null pivots encountered): %d\n",mumps->id.INFOG(28));
1799:         PetscViewerASCIIPrintf(viewer,"  INFOG(29) (after factorization: effective number of entries in the factors (sum over all processors)): %d\n",mumps->id.INFOG(29));
1800:         PetscViewerASCIIPrintf(viewer,"  INFOG(30, 31) (after solution: size in Mbytes of memory used during solution phase): %d, %d\n",mumps->id.INFOG(30),mumps->id.INFOG(31));
1801:         PetscViewerASCIIPrintf(viewer,"  INFOG(32) (after analysis: type of analysis done): %d\n",mumps->id.INFOG(32));
1802:         PetscViewerASCIIPrintf(viewer,"  INFOG(33) (value used for ICNTL(8)): %d\n",mumps->id.INFOG(33));
1803:         PetscViewerASCIIPrintf(viewer,"  INFOG(34) (exponent of the determinant if determinant is requested): %d\n",mumps->id.INFOG(34));
1804:       }
1805:     }
1806:   }
1807:   return(0);
1808: }

1810: PetscErrorCode MatGetInfo_MUMPS(Mat A,MatInfoType flag,MatInfo *info)
1811: {
1812:   Mat_MUMPS *mumps =(Mat_MUMPS*)A->data;

1815:   info->block_size        = 1.0;
1816:   info->nz_allocated      = mumps->id.INFOG(20);
1817:   info->nz_used           = mumps->id.INFOG(20);
1818:   info->nz_unneeded       = 0.0;
1819:   info->assemblies        = 0.0;
1820:   info->mallocs           = 0.0;
1821:   info->memory            = 0.0;
1822:   info->fill_ratio_given  = 0;
1823:   info->fill_ratio_needed = 0;
1824:   info->factor_mallocs    = 0;
1825:   return(0);
1826: }

1828: /* -------------------------------------------------------------------------------------------*/
1829: PetscErrorCode MatFactorSetSchurIS_MUMPS(Mat F, IS is)
1830: {
1831:   Mat_MUMPS      *mumps =(Mat_MUMPS*)F->data;
1832:   const PetscInt *idxs;
1833:   PetscInt       size,i;

1837:   ISGetLocalSize(is,&size);
1838:   if (mumps->petsc_size > 1) {
1839:     PetscBool ls,gs; /* gs is false if any rank other than root has non-empty IS */

1841:     ls   = mumps->myid ? (size ? PETSC_FALSE : PETSC_TRUE) : PETSC_TRUE; /* always true on root; false on others if their size != 0 */
1842:     MPI_Allreduce(&ls,&gs,1,MPIU_BOOL,MPI_LAND,mumps->petsc_comm);
1843:     if (!gs) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP,"MUMPS distributed parallel Schur complements not yet supported from PETSc\n");
1844:   }
1845:   if (mumps->id.size_schur != size) {
1846:     PetscFree2(mumps->id.listvar_schur,mumps->id.schur);
1847:     mumps->id.size_schur = size;
1848:     mumps->id.schur_lld  = size;
1849:     PetscMalloc2(size,&mumps->id.listvar_schur,size*size,&mumps->id.schur);
1850:   }

1852:   /* Schur complement matrix */
1853:   MatCreateSeqDense(PETSC_COMM_SELF,mumps->id.size_schur,mumps->id.size_schur,(PetscScalar*)mumps->id.schur,&F->schur);
1854:   if (mumps->sym == 1) {
1855:     MatSetOption(F->schur,MAT_SPD,PETSC_TRUE);
1856:   }

1858:   /* MUMPS expects Fortran style indices */
1859:   ISGetIndices(is,&idxs);
1860:   PetscMemcpy(mumps->id.listvar_schur,idxs,size*sizeof(PetscInt));
1861:   for (i=0;i<size;i++) mumps->id.listvar_schur[i]++;
1862:   ISRestoreIndices(is,&idxs);
1863:   if (mumps->petsc_size > 1) {
1864:     mumps->id.ICNTL(19) = 1; /* MUMPS returns Schur centralized on the host */
1865:   } else {
1866:     if (F->factortype == MAT_FACTOR_LU) {
1867:       mumps->id.ICNTL(19) = 3; /* MUMPS returns full matrix */
1868:     } else {
1869:       mumps->id.ICNTL(19) = 2; /* MUMPS returns lower triangular part */
1870:     }
1871:   }
1872:   /* set a special value of ICNTL (not handled my MUMPS) to be used in the solve phase by PETSc */
1873:   mumps->id.ICNTL(26) = -1;
1874:   return(0);
1875: }

1877: /* -------------------------------------------------------------------------------------------*/
1878: PetscErrorCode MatFactorCreateSchurComplement_MUMPS(Mat F,Mat* S)
1879: {
1880:   Mat            St;
1881:   Mat_MUMPS      *mumps =(Mat_MUMPS*)F->data;
1882:   PetscScalar    *array;
1883: #if defined(PETSC_USE_COMPLEX)
1884:   PetscScalar    im = PetscSqrtScalar((PetscScalar)-1.0);
1885: #endif

1889:   if (!mumps->id.ICNTL(19)) SETERRQ(PetscObjectComm((PetscObject)F),PETSC_ERR_ORDER,"Schur complement mode not selected! You should call MatFactorSetSchurIS to enable it");
1890:   MatCreate(PETSC_COMM_SELF,&St);
1891:   MatSetSizes(St,PETSC_DECIDE,PETSC_DECIDE,mumps->id.size_schur,mumps->id.size_schur);
1892:   MatSetType(St,MATDENSE);
1893:   MatSetUp(St);
1894:   MatDenseGetArray(St,&array);
1895:   if (!mumps->sym) { /* MUMPS always return a full matrix */
1896:     if (mumps->id.ICNTL(19) == 1) { /* stored by rows */
1897:       PetscInt i,j,N=mumps->id.size_schur;
1898:       for (i=0;i<N;i++) {
1899:         for (j=0;j<N;j++) {
1900: #if !defined(PETSC_USE_COMPLEX)
1901:           PetscScalar val = mumps->id.schur[i*N+j];
1902: #else
1903:           PetscScalar val = mumps->id.schur[i*N+j].r + im*mumps->id.schur[i*N+j].i;
1904: #endif
1905:           array[j*N+i] = val;
1906:         }
1907:       }
1908:     } else { /* stored by columns */
1909:       PetscMemcpy(array,mumps->id.schur,mumps->id.size_schur*mumps->id.size_schur*sizeof(PetscScalar));
1910:     }
1911:   } else { /* either full or lower-triangular (not packed) */
1912:     if (mumps->id.ICNTL(19) == 2) { /* lower triangular stored by columns */
1913:       PetscInt i,j,N=mumps->id.size_schur;
1914:       for (i=0;i<N;i++) {
1915:         for (j=i;j<N;j++) {
1916: #if !defined(PETSC_USE_COMPLEX)
1917:           PetscScalar val = mumps->id.schur[i*N+j];
1918: #else
1919:           PetscScalar val = mumps->id.schur[i*N+j].r + im*mumps->id.schur[i*N+j].i;
1920: #endif
1921:           array[i*N+j] = val;
1922:           array[j*N+i] = val;
1923:         }
1924:       }
1925:     } else if (mumps->id.ICNTL(19) == 3) { /* full matrix */
1926:       PetscMemcpy(array,mumps->id.schur,mumps->id.size_schur*mumps->id.size_schur*sizeof(PetscScalar));
1927:     } else { /* ICNTL(19) == 1 lower triangular stored by rows */
1928:       PetscInt i,j,N=mumps->id.size_schur;
1929:       for (i=0;i<N;i++) {
1930:         for (j=0;j<i+1;j++) {
1931: #if !defined(PETSC_USE_COMPLEX)
1932:           PetscScalar val = mumps->id.schur[i*N+j];
1933: #else
1934:           PetscScalar val = mumps->id.schur[i*N+j].r + im*mumps->id.schur[i*N+j].i;
1935: #endif
1936:           array[i*N+j] = val;
1937:           array[j*N+i] = val;
1938:         }
1939:       }
1940:     }
1941:   }
1942:   MatDenseRestoreArray(St,&array);
1943:   *S   = St;
1944:   return(0);
1945: }

1947: /* -------------------------------------------------------------------------------------------*/
1948: PetscErrorCode MatMumpsSetIcntl_MUMPS(Mat F,PetscInt icntl,PetscInt ival)
1949: {
1950:   Mat_MUMPS *mumps =(Mat_MUMPS*)F->data;

1953:   mumps->id.ICNTL(icntl) = ival;
1954:   return(0);
1955: }

1957: PetscErrorCode MatMumpsGetIcntl_MUMPS(Mat F,PetscInt icntl,PetscInt *ival)
1958: {
1959:   Mat_MUMPS *mumps =(Mat_MUMPS*)F->data;

1962:   *ival = mumps->id.ICNTL(icntl);
1963:   return(0);
1964: }

1966: /*@
1967:   MatMumpsSetIcntl - Set MUMPS parameter ICNTL()

1969:    Logically Collective on Mat

1971:    Input Parameters:
1972: +  F - the factored matrix obtained by calling MatGetFactor() from PETSc-MUMPS interface
1973: .  icntl - index of MUMPS parameter array ICNTL()
1974: -  ival - value of MUMPS ICNTL(icntl)

1976:   Options Database:
1977: .   -mat_mumps_icntl_<icntl> <ival>

1979:    Level: beginner

1981:    References:
1982: .     MUMPS Users' Guide

1984: .seealso: MatGetFactor(), MatMumpsSetICntl(), MatMumpsGetIcntl(), MatMumpsSetCntl(), MatMumpsGetCntl(), MatMumpsGetInfo(), MatMumpsGetInfog(), MatMumpsGetRinfo(), MatMumpsGetRinfog()
1985:  @*/
1986: PetscErrorCode MatMumpsSetIcntl(Mat F,PetscInt icntl,PetscInt ival)
1987: {

1992:   if (!F->factortype) SETERRQ(PetscObjectComm((PetscObject)F),PETSC_ERR_ARG_WRONGSTATE,"Only for factored matrix");
1995:   PetscTryMethod(F,"MatMumpsSetIcntl_C",(Mat,PetscInt,PetscInt),(F,icntl,ival));
1996:   return(0);
1997: }

1999: /*@
2000:   MatMumpsGetIcntl - Get MUMPS parameter ICNTL()

2002:    Logically Collective on Mat

2004:    Input Parameters:
2005: +  F - the factored matrix obtained by calling MatGetFactor() from PETSc-MUMPS interface
2006: -  icntl - index of MUMPS parameter array ICNTL()

2008:   Output Parameter:
2009: .  ival - value of MUMPS ICNTL(icntl)

2011:    Level: beginner

2013:    References:
2014: .     MUMPS Users' Guide

2016: .seealso: MatGetFactor(), MatMumpsSetICntl(), MatMumpsGetIcntl(), MatMumpsSetCntl(), MatMumpsGetCntl(), MatMumpsGetInfo(), MatMumpsGetInfog(), MatMumpsGetRinfo(), MatMumpsGetRinfog()
2017: @*/
2018: PetscErrorCode MatMumpsGetIcntl(Mat F,PetscInt icntl,PetscInt *ival)
2019: {

2024:   if (!F->factortype) SETERRQ(PetscObjectComm((PetscObject)F),PETSC_ERR_ARG_WRONGSTATE,"Only for factored matrix");
2027:   PetscUseMethod(F,"MatMumpsGetIcntl_C",(Mat,PetscInt,PetscInt*),(F,icntl,ival));
2028:   return(0);
2029: }

2031: /* -------------------------------------------------------------------------------------------*/
2032: PetscErrorCode MatMumpsSetCntl_MUMPS(Mat F,PetscInt icntl,PetscReal val)
2033: {
2034:   Mat_MUMPS *mumps =(Mat_MUMPS*)F->data;

2037:   mumps->id.CNTL(icntl) = val;
2038:   return(0);
2039: }

2041: PetscErrorCode MatMumpsGetCntl_MUMPS(Mat F,PetscInt icntl,PetscReal *val)
2042: {
2043:   Mat_MUMPS *mumps =(Mat_MUMPS*)F->data;

2046:   *val = mumps->id.CNTL(icntl);
2047:   return(0);
2048: }

2050: /*@
2051:   MatMumpsSetCntl - Set MUMPS parameter CNTL()

2053:    Logically Collective on Mat

2055:    Input Parameters:
2056: +  F - the factored matrix obtained by calling MatGetFactor() from PETSc-MUMPS interface
2057: .  icntl - index of MUMPS parameter array CNTL()
2058: -  val - value of MUMPS CNTL(icntl)

2060:   Options Database:
2061: .   -mat_mumps_cntl_<icntl> <val>

2063:    Level: beginner

2065:    References:
2066: .     MUMPS Users' Guide

2068: .seealso: MatGetFactor(), MatMumpsSetICntl(), MatMumpsGetIcntl(), MatMumpsSetCntl(), MatMumpsGetCntl(), MatMumpsGetInfo(), MatMumpsGetInfog(), MatMumpsGetRinfo(), MatMumpsGetRinfog()
2069: @*/
2070: PetscErrorCode MatMumpsSetCntl(Mat F,PetscInt icntl,PetscReal val)
2071: {

2076:   if (!F->factortype) SETERRQ(PetscObjectComm((PetscObject)F),PETSC_ERR_ARG_WRONGSTATE,"Only for factored matrix");
2079:   PetscTryMethod(F,"MatMumpsSetCntl_C",(Mat,PetscInt,PetscReal),(F,icntl,val));
2080:   return(0);
2081: }

2083: /*@
2084:   MatMumpsGetCntl - Get MUMPS parameter CNTL()

2086:    Logically Collective on Mat

2088:    Input Parameters:
2089: +  F - the factored matrix obtained by calling MatGetFactor() from PETSc-MUMPS interface
2090: -  icntl - index of MUMPS parameter array CNTL()

2092:   Output Parameter:
2093: .  val - value of MUMPS CNTL(icntl)

2095:    Level: beginner

2097:    References:
2098: .      MUMPS Users' Guide

2100: .seealso: MatGetFactor(), MatMumpsSetICntl(), MatMumpsGetIcntl(), MatMumpsSetCntl(), MatMumpsGetCntl(), MatMumpsGetInfo(), MatMumpsGetInfog(), MatMumpsGetRinfo(), MatMumpsGetRinfog()
2101: @*/
2102: PetscErrorCode MatMumpsGetCntl(Mat F,PetscInt icntl,PetscReal *val)
2103: {

2108:   if (!F->factortype) SETERRQ(PetscObjectComm((PetscObject)F),PETSC_ERR_ARG_WRONGSTATE,"Only for factored matrix");
2111:   PetscUseMethod(F,"MatMumpsGetCntl_C",(Mat,PetscInt,PetscReal*),(F,icntl,val));
2112:   return(0);
2113: }

2115: PetscErrorCode MatMumpsGetInfo_MUMPS(Mat F,PetscInt icntl,PetscInt *info)
2116: {
2117:   Mat_MUMPS *mumps =(Mat_MUMPS*)F->data;

2120:   *info = mumps->id.INFO(icntl);
2121:   return(0);
2122: }

2124: PetscErrorCode MatMumpsGetInfog_MUMPS(Mat F,PetscInt icntl,PetscInt *infog)
2125: {
2126:   Mat_MUMPS *mumps =(Mat_MUMPS*)F->data;

2129:   *infog = mumps->id.INFOG(icntl);
2130:   return(0);
2131: }

2133: PetscErrorCode MatMumpsGetRinfo_MUMPS(Mat F,PetscInt icntl,PetscReal *rinfo)
2134: {
2135:   Mat_MUMPS *mumps =(Mat_MUMPS*)F->data;

2138:   *rinfo = mumps->id.RINFO(icntl);
2139:   return(0);
2140: }

2142: PetscErrorCode MatMumpsGetRinfog_MUMPS(Mat F,PetscInt icntl,PetscReal *rinfog)
2143: {
2144:   Mat_MUMPS *mumps =(Mat_MUMPS*)F->data;

2147:   *rinfog = mumps->id.RINFOG(icntl);
2148:   return(0);
2149: }

2151: PetscErrorCode MatMumpsGetInverse_MUMPS(Mat F,Mat spRHS)
2152: {
2154:   Mat            Bt = NULL,Btseq = NULL;
2155:   PetscBool      flg;
2156:   Mat_MUMPS      *mumps =(Mat_MUMPS*)F->data;
2157:   PetscScalar    *aa;
2158:   PetscInt       spnr,*ia,*ja;

2162:   PetscObjectTypeCompare((PetscObject)spRHS,MATTRANSPOSEMAT,&flg);
2163:   if (flg) {
2164:     MatTransposeGetMat(spRHS,&Bt);
2165:   } else SETERRQ(PetscObjectComm((PetscObject)spRHS),PETSC_ERR_ARG_WRONG,"Matrix spRHS must be type MATTRANSPOSEMAT matrix");

2167:   MatMumpsSetIcntl(F,30,1);

2169:   if (mumps->petsc_size > 1) {
2170:     Mat_MPIAIJ *b = (Mat_MPIAIJ*)Bt->data;
2171:     Btseq = b->A;
2172:   } else {
2173:     Btseq = Bt;
2174:   }

2176:   if (!mumps->myid) {
2177:     MatSeqAIJGetArray(Btseq,&aa);
2178:     MatGetRowIJ(Btseq,1,PETSC_FALSE,PETSC_FALSE,&spnr,(const PetscInt**)&ia,(const PetscInt**)&ja,&flg);
2179:     if (!flg) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONG,"Cannot get IJ structure");

2181:     mumps->id.irhs_ptr    = ia;
2182:     mumps->id.irhs_sparse = ja;
2183:     mumps->id.nz_rhs      = ia[spnr] - 1;
2184:     mumps->id.rhs_sparse  = (MumpsScalar*)aa;
2185:   } else {
2186:     mumps->id.irhs_ptr    = NULL;
2187:     mumps->id.irhs_sparse = NULL;
2188:     mumps->id.nz_rhs      = 0;
2189:     mumps->id.rhs_sparse  = NULL;
2190:   }
2191:   mumps->id.ICNTL(20)   = 1; /* rhs is sparse */
2192:   mumps->id.ICNTL(21)   = 0; /* solution is in assembled centralized format */

2194:   /* solve phase */
2195:   /*-------------*/
2196:   mumps->id.job = JOB_SOLVE;
2197:   PetscMUMPS_c(mumps);
2198:   if (mumps->id.INFOG(1) < 0)
2199:     SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_LIB,"Error reported by MUMPS in solve phase: INFOG(1)=%d INFO(2)=%d\n",mumps->id.INFOG(1),mumps->id.INFO(2));

2201:   if (!mumps->myid) {
2202:     MatSeqAIJRestoreArray(Btseq,&aa);
2203:     MatRestoreRowIJ(Btseq,1,PETSC_FALSE,PETSC_FALSE,&spnr,(const PetscInt**)&ia,(const PetscInt**)&ja,&flg);
2204:     if (!flg) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONG,"Cannot get IJ structure");
2205:   }
2206:   return(0);
2207: }

2209: /*@
2210:   MatMumpsGetInverse - Get user-specified set of entries in inverse of A

2212:    Logically Collective on Mat

2214:    Input Parameters:
2215: +  F - the factored matrix obtained by calling MatGetFactor() from PETSc-MUMPS interface
2216: -  spRHS - sequential sparse matrix in MATTRANSPOSEMAT format holding specified indices in processor[0]

2218:   Output Parameter:
2219: . spRHS - requested entries of inverse of A

2221:    Level: beginner

2223:    References:
2224: .      MUMPS Users' Guide

2226: .seealso: MatGetFactor(), MatCreateTranspose()
2227: @*/
2228: PetscErrorCode MatMumpsGetInverse(Mat F,Mat spRHS)
2229: {

2234:   if (!F->factortype) SETERRQ(PetscObjectComm((PetscObject)F),PETSC_ERR_ARG_WRONGSTATE,"Only for factored matrix");
2235:   PetscUseMethod(F,"MatMumpsGetInverse_C",(Mat,Mat),(F,spRHS));
2236:   return(0);
2237: }

2239: PetscErrorCode MatMumpsGetInverseTranspose_MUMPS(Mat F,Mat spRHST)
2240: {
2242:   Mat            spRHS;

2245:   MatCreateTranspose(spRHST,&spRHS);
2246:   MatMumpsGetInverse_MUMPS(F,spRHS);
2247:   MatDestroy(&spRHS);
2248:   return(0);
2249: }

2251: /*@
2252:   MatMumpsGetInverseTranspose - Get user-specified set of entries in inverse of matrix A^T

2254:    Logically Collective on Mat

2256:    Input Parameters:
2257: +  F - the factored matrix of A obtained by calling MatGetFactor() from PETSc-MUMPS interface
2258: -  spRHST - sequential sparse matrix in MATAIJ format holding specified indices of A^T in processor[0]

2260:   Output Parameter:
2261: . spRHST - requested entries of inverse of A^T

2263:    Level: beginner

2265:    References:
2266: .      MUMPS Users' Guide

2268: .seealso: MatGetFactor(), MatCreateTranspose(), MatMumpsGetInverse()
2269: @*/
2270: PetscErrorCode MatMumpsGetInverseTranspose(Mat F,Mat spRHST)
2271: {
2273:   PetscBool      flg;

2277:   if (!F->factortype) SETERRQ(PetscObjectComm((PetscObject)F),PETSC_ERR_ARG_WRONGSTATE,"Only for factored matrix");
2278:   PetscObjectTypeCompareAny((PetscObject)spRHST,&flg,MATSEQAIJ,MATMPIAIJ,NULL);
2279:   if (!flg) SETERRQ(PetscObjectComm((PetscObject)spRHST),PETSC_ERR_ARG_WRONG,"Matrix spRHST must be MATAIJ matrix");

2281:   PetscUseMethod(F,"MatMumpsGetInverseTranspose_C",(Mat,Mat),(F,spRHST));
2282:   return(0);
2283: }

2285: /*@
2286:   MatMumpsGetInfo - Get MUMPS parameter INFO()

2288:    Logically Collective on Mat

2290:    Input Parameters:
2291: +  F - the factored matrix obtained by calling MatGetFactor() from PETSc-MUMPS interface
2292: -  icntl - index of MUMPS parameter array INFO()

2294:   Output Parameter:
2295: .  ival - value of MUMPS INFO(icntl)

2297:    Level: beginner

2299:    References:
2300: .      MUMPS Users' Guide

2302: .seealso: MatGetFactor(), MatMumpsSetICntl(), MatMumpsGetIcntl(), MatMumpsSetCntl(), MatMumpsGetCntl(), MatMumpsGetInfo(), MatMumpsGetInfog(), MatMumpsGetRinfo(), MatMumpsGetRinfog()
2303: @*/
2304: PetscErrorCode MatMumpsGetInfo(Mat F,PetscInt icntl,PetscInt *ival)
2305: {

2310:   if (!F->factortype) SETERRQ(PetscObjectComm((PetscObject)F),PETSC_ERR_ARG_WRONGSTATE,"Only for factored matrix");
2312:   PetscUseMethod(F,"MatMumpsGetInfo_C",(Mat,PetscInt,PetscInt*),(F,icntl,ival));
2313:   return(0);
2314: }

2316: /*@
2317:   MatMumpsGetInfog - Get MUMPS parameter INFOG()

2319:    Logically Collective on Mat

2321:    Input Parameters:
2322: +  F - the factored matrix obtained by calling MatGetFactor() from PETSc-MUMPS interface
2323: -  icntl - index of MUMPS parameter array INFOG()

2325:   Output Parameter:
2326: .  ival - value of MUMPS INFOG(icntl)

2328:    Level: beginner

2330:    References:
2331: .      MUMPS Users' Guide

2333: .seealso: MatGetFactor(), MatMumpsSetICntl(), MatMumpsGetIcntl(), MatMumpsSetCntl(), MatMumpsGetCntl(), MatMumpsGetInfo(), MatMumpsGetInfog(), MatMumpsGetRinfo(), MatMumpsGetRinfog()
2334: @*/
2335: PetscErrorCode MatMumpsGetInfog(Mat F,PetscInt icntl,PetscInt *ival)
2336: {

2341:   if (!F->factortype) SETERRQ(PetscObjectComm((PetscObject)F),PETSC_ERR_ARG_WRONGSTATE,"Only for factored matrix");
2343:   PetscUseMethod(F,"MatMumpsGetInfog_C",(Mat,PetscInt,PetscInt*),(F,icntl,ival));
2344:   return(0);
2345: }

2347: /*@
2348:   MatMumpsGetRinfo - Get MUMPS parameter RINFO()

2350:    Logically Collective on Mat

2352:    Input Parameters:
2353: +  F - the factored matrix obtained by calling MatGetFactor() from PETSc-MUMPS interface
2354: -  icntl - index of MUMPS parameter array RINFO()

2356:   Output Parameter:
2357: .  val - value of MUMPS RINFO(icntl)

2359:    Level: beginner

2361:    References:
2362: .       MUMPS Users' Guide

2364: .seealso: MatGetFactor(), MatMumpsSetICntl(), MatMumpsGetIcntl(), MatMumpsSetCntl(), MatMumpsGetCntl(), MatMumpsGetInfo(), MatMumpsGetInfog(), MatMumpsGetRinfo(), MatMumpsGetRinfog()
2365: @*/
2366: PetscErrorCode MatMumpsGetRinfo(Mat F,PetscInt icntl,PetscReal *val)
2367: {

2372:   if (!F->factortype) SETERRQ(PetscObjectComm((PetscObject)F),PETSC_ERR_ARG_WRONGSTATE,"Only for factored matrix");
2374:   PetscUseMethod(F,"MatMumpsGetRinfo_C",(Mat,PetscInt,PetscReal*),(F,icntl,val));
2375:   return(0);
2376: }

2378: /*@
2379:   MatMumpsGetRinfog - Get MUMPS parameter RINFOG()

2381:    Logically Collective on Mat

2383:    Input Parameters:
2384: +  F - the factored matrix obtained by calling MatGetFactor() from PETSc-MUMPS interface
2385: -  icntl - index of MUMPS parameter array RINFOG()

2387:   Output Parameter:
2388: .  val - value of MUMPS RINFOG(icntl)

2390:    Level: beginner

2392:    References:
2393: .      MUMPS Users' Guide

2395: .seealso: MatGetFactor(), MatMumpsSetICntl(), MatMumpsGetIcntl(), MatMumpsSetCntl(), MatMumpsGetCntl(), MatMumpsGetInfo(), MatMumpsGetInfog(), MatMumpsGetRinfo(), MatMumpsGetRinfog()
2396: @*/
2397: PetscErrorCode MatMumpsGetRinfog(Mat F,PetscInt icntl,PetscReal *val)
2398: {

2403:   if (!F->factortype) SETERRQ(PetscObjectComm((PetscObject)F),PETSC_ERR_ARG_WRONGSTATE,"Only for factored matrix");
2405:   PetscUseMethod(F,"MatMumpsGetRinfog_C",(Mat,PetscInt,PetscReal*),(F,icntl,val));
2406:   return(0);
2407: }

2409: /*MC
2410:   MATSOLVERMUMPS -  A matrix type providing direct solvers (LU and Cholesky) for
2411:   distributed and sequential matrices via the external package MUMPS.

2413:   Works with MATAIJ and MATSBAIJ matrices

2415:   Use ./configure --download-mumps --download-scalapack --download-parmetis --download-metis --download-ptscotch  to have PETSc installed with MUMPS

2417:   Use ./configure --with-openmp --download-hwloc (or --with-hwloc) to enable running MUMPS in MPI+OpenMP hybrid mode and non-MUMPS in flat-MPI mode. See details below.

2419:   Use -pc_type cholesky or lu -pc_factor_mat_solver_type mumps to use this direct solver

2421:   Options Database Keys:
2422: +  -mat_mumps_icntl_1 - ICNTL(1): output stream for error messages
2423: .  -mat_mumps_icntl_2 - ICNTL(2): output stream for diagnostic printing, statistics, and warning
2424: .  -mat_mumps_icntl_3 -  ICNTL(3): output stream for global information, collected on the host
2425: .  -mat_mumps_icntl_4 -  ICNTL(4): level of printing (0 to 4)
2426: .  -mat_mumps_icntl_6 - ICNTL(6): permutes to a zero-free diagonal and/or scale the matrix (0 to 7)
2427: .  -mat_mumps_icntl_7 - ICNTL(7): computes a symmetric permutation in sequential analysis (0 to 7). 3=Scotch, 4=PORD, 5=Metis
2428: .  -mat_mumps_icntl_8  - ICNTL(8): scaling strategy (-2 to 8 or 77)
2429: .  -mat_mumps_icntl_10  - ICNTL(10): max num of refinements
2430: .  -mat_mumps_icntl_11  - ICNTL(11): statistics related to an error analysis (via -ksp_view)
2431: .  -mat_mumps_icntl_12  - ICNTL(12): an ordering strategy for symmetric matrices (0 to 3)
2432: .  -mat_mumps_icntl_13  - ICNTL(13): parallelism of the root node (enable ScaLAPACK) and its splitting
2433: .  -mat_mumps_icntl_14  - ICNTL(14): percentage increase in the estimated working space
2434: .  -mat_mumps_icntl_19  - ICNTL(19): computes the Schur complement
2435: .  -mat_mumps_icntl_22  - ICNTL(22): in-core/out-of-core factorization and solve (0 or 1)
2436: .  -mat_mumps_icntl_23  - ICNTL(23): max size of the working memory (MB) that can allocate per processor
2437: .  -mat_mumps_icntl_24  - ICNTL(24): detection of null pivot rows (0 or 1)
2438: .  -mat_mumps_icntl_25  - ICNTL(25): compute a solution of a deficient matrix and a null space basis
2439: .  -mat_mumps_icntl_26  - ICNTL(26): drives the solution phase if a Schur complement matrix
2440: .  -mat_mumps_icntl_28  - ICNTL(28): use 1 for sequential analysis and ictnl(7) ordering, or 2 for parallel analysis and ictnl(29) ordering
2441: .  -mat_mumps_icntl_29 - ICNTL(29): parallel ordering 1 = ptscotch, 2 = parmetis
2442: .  -mat_mumps_icntl_30 - ICNTL(30): compute user-specified set of entries in inv(A)
2443: .  -mat_mumps_icntl_31 - ICNTL(31): indicates which factors may be discarded during factorization
2444: .  -mat_mumps_icntl_33 - ICNTL(33): compute determinant
2445: .  -mat_mumps_cntl_1  - CNTL(1): relative pivoting threshold
2446: .  -mat_mumps_cntl_2  -  CNTL(2): stopping criterion of refinement
2447: .  -mat_mumps_cntl_3 - CNTL(3): absolute pivoting threshold
2448: .  -mat_mumps_cntl_4 - CNTL(4): value for static pivoting
2449: .  -mat_mumps_cntl_5 - CNTL(5): fixation for null pivots
2450: -  -mat_mumps_use_omp_threads [m] - run MUMPS in MPI+OpenMP hybrid mode as if omp_set_num_threads(m) is called before calling MUMPS.
2451:                                    Default might be the number of cores per CPU package (socket) as reported by hwloc and suggested by the MUMPS manual.

2453:   Level: beginner

2455:     Notes:
2456:     When a MUMPS factorization fails inside a KSP solve, for example with a KSP_DIVERGED_PCSETUP_FAILED, one can find the MUMPS information about the failure by calling
2457: $          KSPGetPC(ksp,&pc);
2458: $          PCFactorGetMatrix(pc,&mat);
2459: $          MatMumpsGetInfo(mat,....);
2460: $          MatMumpsGetInfog(mat,....); etc.
2461:            Or you can run with -ksp_error_if_not_converged and the program will be stopped and the information printed in the error message.

2463:    If you want to run MUMPS in MPI+OpenMP hybrid mode (i.e., enable multithreading in MUMPS), but still want to run the non-MUMPS part
2464:    (i.e., PETSc part) of your code in the so-called flat-MPI (aka pure-MPI) mode, you need to configure PETSc with --with-openmp --download-hwloc
2465:    (or --with-hwloc), and have an MPI that supports MPI-3.0's process shared memory (which is usually available). Since MUMPS calls BLAS
2466:    libraries, to really get performance, you should have multithreaded BLAS libraries such as Intel MKL, AMD ACML, Cray libSci or open sourced
2467:    OpenBLAS (PETSc has configure options to install/specify them). With these conditions met, you can run your program as before but with
2468:    an extra option -mat_mumps_use_omp_threads [m]. It works as if we set OMP_NUM_THREADS=m to MUMPS, with m defaults to the number of cores
2469:    per CPU socket (or package, in hwloc term), or number of PETSc MPI processes on a node, whichever is smaller.

2471:    By flat-MPI or pure-MPI mode, it means you run your code with as many MPI ranks as the number of cores. For example,
2472:    if a compute node has 32 cores and you run on two nodes, you may use "mpirun -n 64 ./test". To run MPI+OpenMP hybrid MUMPS,
2473:    the tranditional way is to set OMP_NUM_THREADS and run with fewer MPI ranks than cores. For example, if you want to have 16 OpenMP
2474:    threads per rank, then you may use "export OMP_NUM_THREADS=16 && mpirun -n 4 ./test". The problem of this approach is that the non-MUMPS
2475:    part of your code is run with fewer cores and CPUs are wasted. "-mat_mumps_use_omp_threads [m]" provides an alternative such that
2476:    you can stil run your code with as many MPI ranks as the number of cores, but have MUMPS run in MPI+OpenMP hybrid mode. In our example,
2477:    you can use "mpirun -n 64 ./test -mat_mumps_use_omp_threads 16".

2479:    If you run your code through a job submission system, there are caveats in MPI rank mapping. We use MPI_Comm_split_type to get MPI
2480:    processes on each compute node. Listing the processes in rank ascending order, we split processes on a node into consecutive groups of
2481:    size m and create a communicator called omp_comm for each group. Rank 0 in an omp_comm is called the master rank, and others in the omp_comm
2482:    are called slave ranks (or slaves). Only master ranks are seen to MUMPS and slaves are not. We will free CPUs assigned to slaves (might be set
2483:    by CPU binding policies in job scripts) and make the CPUs available to the master so that OMP threads spawned by MUMPS can run on the CPUs.
2484:    In a multi-socket compute node, MPI rank mapping is an issue. Still use the above example and suppose your compute node has two sockets,
2485:    if you interleave MPI ranks on the two sockets, in other words, even ranks are placed on socket 0, and odd ranks are on socket 1, and bind
2486:    MPI ranks to cores, then with -mat_mumps_use_omp_threads 16, a master rank (and threads it spawns) will use half cores in socket 0, and half
2487:    cores in socket 1, that definitely hurts locality. On the other hand, if you map MPI ranks consecutively on the two sockets, then the
2488:    problem will not happen. Therefore, when you use -mat_mumps_use_omp_threads, you need to keep an eye on your MPI rank mapping and CPU binding.
2489:    For example, with the Slurm job scheduler, one can use srun --cpu-bind=verbsoe -m block:block to map consecutive MPI ranks to sockets and
2490:    examine the mapping result.

2492:    PETSc does not control thread binding in MUMPS. So to get best performance, one still has to set OMP_PROC_BIND and OMP_PLACES in job scripts,
2493:    for example, export OMP_PLACES=threads and export OMP_PROC_BIND=spread. One does not need to export OMP_NUM_THREADS=m in job scripts as PETSc
2494:    calls omp_set_num_threads(m) internally before calling MUMPS.

2496:    References:
2497: +   1. - Heroux, Michael A., R. Brightwell, and Michael M. Wolf. "Bi-modal MPI and MPI+ threads computing on scalable multicore systems." IJHPCA (Submitted) (2011).
2498: -   2. - Gutierrez, Samuel K., et al. "Accommodating Thread-Level Heterogeneity in Coupled Parallel Applications." Parallel and Distributed Processing Symposium (IPDPS), 2017 IEEE International. IEEE, 2017.

2500: .seealso: PCFactorSetMatSolverType(), MatSolverType, MatMumpsSetICntl(), MatMumpsGetIcntl(), MatMumpsSetCntl(), MatMumpsGetCntl(), MatMumpsGetInfo(), MatMumpsGetInfog(), MatMumpsGetRinfo(), MatMumpsGetRinfog(), KSPGetPC(), PCGetFactor(), PCFactorGetMatrix()

2502: M*/

2504: static PetscErrorCode MatFactorGetSolverType_mumps(Mat A,MatSolverType *type)
2505: {
2507:   *type = MATSOLVERMUMPS;
2508:   return(0);
2509: }

2511: /* MatGetFactor for Seq and MPI AIJ matrices */
2512: static PetscErrorCode MatGetFactor_aij_mumps(Mat A,MatFactorType ftype,Mat *F)
2513: {
2514:   Mat            B;
2516:   Mat_MUMPS      *mumps;
2517:   PetscBool      isSeqAIJ;

2520:   /* Create the factorization matrix */
2521:   PetscObjectTypeCompare((PetscObject)A,MATSEQAIJ,&isSeqAIJ);
2522:   MatCreate(PetscObjectComm((PetscObject)A),&B);
2523:   MatSetSizes(B,A->rmap->n,A->cmap->n,A->rmap->N,A->cmap->N);
2524:   PetscStrallocpy("mumps",&((PetscObject)B)->type_name);
2525:   MatSetUp(B);

2527:   PetscNewLog(B,&mumps);

2529:   B->ops->view        = MatView_MUMPS;
2530:   B->ops->getinfo     = MatGetInfo_MUMPS;

2532:   PetscObjectComposeFunction((PetscObject)B,"MatFactorGetSolverType_C",MatFactorGetSolverType_mumps);
2533:   PetscObjectComposeFunction((PetscObject)B,"MatFactorSetSchurIS_C",MatFactorSetSchurIS_MUMPS);
2534:   PetscObjectComposeFunction((PetscObject)B,"MatFactorCreateSchurComplement_C",MatFactorCreateSchurComplement_MUMPS);
2535:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsSetIcntl_C",MatMumpsSetIcntl_MUMPS);
2536:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsGetIcntl_C",MatMumpsGetIcntl_MUMPS);
2537:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsSetCntl_C",MatMumpsSetCntl_MUMPS);
2538:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsGetCntl_C",MatMumpsGetCntl_MUMPS);
2539:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsGetInfo_C",MatMumpsGetInfo_MUMPS);
2540:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsGetInfog_C",MatMumpsGetInfog_MUMPS);
2541:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsGetRinfo_C",MatMumpsGetRinfo_MUMPS);
2542:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsGetRinfog_C",MatMumpsGetRinfog_MUMPS);
2543:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsGetInverse_C",MatMumpsGetInverse_MUMPS);
2544:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsGetInverseTranspose_C",MatMumpsGetInverseTranspose_MUMPS);

2546:   if (ftype == MAT_FACTOR_LU) {
2547:     B->ops->lufactorsymbolic = MatLUFactorSymbolic_AIJMUMPS;
2548:     B->factortype            = MAT_FACTOR_LU;
2549:     if (isSeqAIJ) mumps->ConvertToTriples = MatConvertToTriples_seqaij_seqaij;
2550:     else mumps->ConvertToTriples = MatConvertToTriples_mpiaij_mpiaij;
2551:     mumps->sym = 0;
2552:   } else {
2553:     B->ops->choleskyfactorsymbolic = MatCholeskyFactorSymbolic_MUMPS;
2554:     B->factortype                  = MAT_FACTOR_CHOLESKY;
2555:     if (isSeqAIJ) mumps->ConvertToTriples = MatConvertToTriples_seqaij_seqsbaij;
2556:     else mumps->ConvertToTriples = MatConvertToTriples_mpiaij_mpisbaij;
2557: #if defined(PETSC_USE_COMPLEX)
2558:     mumps->sym = 2;
2559: #else
2560:     if (A->spd_set && A->spd) mumps->sym = 1;
2561:     else                      mumps->sym = 2;
2562: #endif
2563:   }

2565:   /* set solvertype */
2566:   PetscFree(B->solvertype);
2567:   PetscStrallocpy(MATSOLVERMUMPS,&B->solvertype);

2569:   B->ops->destroy = MatDestroy_MUMPS;
2570:   B->data         = (void*)mumps;

2572:   PetscInitializeMUMPS(A,mumps);

2574:   *F = B;
2575:   return(0);
2576: }

2578: /* MatGetFactor for Seq and MPI SBAIJ matrices */
2579: static PetscErrorCode MatGetFactor_sbaij_mumps(Mat A,MatFactorType ftype,Mat *F)
2580: {
2581:   Mat            B;
2583:   Mat_MUMPS      *mumps;
2584:   PetscBool      isSeqSBAIJ;

2587:   if (ftype != MAT_FACTOR_CHOLESKY) SETERRQ(PetscObjectComm((PetscObject)A),PETSC_ERR_SUP,"Cannot use PETSc SBAIJ matrices with MUMPS LU, use AIJ matrix");
2588:   if (A->rmap->bs > 1) SETERRQ(PetscObjectComm((PetscObject)A),PETSC_ERR_SUP,"Cannot use PETSc SBAIJ matrices with block size > 1 with MUMPS Cholesky, use AIJ matrix instead");
2589:   PetscObjectTypeCompare((PetscObject)A,MATSEQSBAIJ,&isSeqSBAIJ);
2590:   /* Create the factorization matrix */
2591:   MatCreate(PetscObjectComm((PetscObject)A),&B);
2592:   MatSetSizes(B,A->rmap->n,A->cmap->n,A->rmap->N,A->cmap->N);
2593:   PetscStrallocpy("mumps",&((PetscObject)B)->type_name);
2594:   MatSetUp(B);

2596:   PetscNewLog(B,&mumps);
2597:   if (isSeqSBAIJ) {
2598:     mumps->ConvertToTriples = MatConvertToTriples_seqsbaij_seqsbaij;
2599:   } else {
2600:     mumps->ConvertToTriples = MatConvertToTriples_mpisbaij_mpisbaij;
2601:   }

2603:   B->ops->getinfo                = MatGetInfo_External;
2604:   B->ops->choleskyfactorsymbolic = MatCholeskyFactorSymbolic_MUMPS;
2605:   B->ops->view                   = MatView_MUMPS;

2607:   PetscObjectComposeFunction((PetscObject)B,"MatFactorGetSolverType_C",MatFactorGetSolverType_mumps);
2608:   PetscObjectComposeFunction((PetscObject)B,"MatFactorSetSchurIS_C",MatFactorSetSchurIS_MUMPS);
2609:   PetscObjectComposeFunction((PetscObject)B,"MatFactorCreateSchurComplement_C",MatFactorCreateSchurComplement_MUMPS);
2610:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsSetIcntl_C",MatMumpsSetIcntl_MUMPS);
2611:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsGetIcntl_C",MatMumpsGetIcntl_MUMPS);
2612:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsSetCntl_C",MatMumpsSetCntl_MUMPS);
2613:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsGetCntl_C",MatMumpsGetCntl_MUMPS);
2614:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsGetInfo_C",MatMumpsGetInfo_MUMPS);
2615:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsGetInfog_C",MatMumpsGetInfog_MUMPS);
2616:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsGetRinfo_C",MatMumpsGetRinfo_MUMPS);
2617:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsGetRinfog_C",MatMumpsGetRinfog_MUMPS);
2618:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsGetInverse_C",MatMumpsGetInverse_MUMPS);
2619:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsGetInverseTranspose_C",MatMumpsGetInverseTranspose_MUMPS);

2621:   B->factortype = MAT_FACTOR_CHOLESKY;
2622: #if defined(PETSC_USE_COMPLEX)
2623:   mumps->sym = 2;
2624: #else
2625:   if (A->spd_set && A->spd) mumps->sym = 1;
2626:   else                      mumps->sym = 2;
2627: #endif

2629:   /* set solvertype */
2630:   PetscFree(B->solvertype);
2631:   PetscStrallocpy(MATSOLVERMUMPS,&B->solvertype);

2633:   B->ops->destroy = MatDestroy_MUMPS;
2634:   B->data         = (void*)mumps;

2636:   PetscInitializeMUMPS(A,mumps);

2638:   *F = B;
2639:   return(0);
2640: }

2642: static PetscErrorCode MatGetFactor_baij_mumps(Mat A,MatFactorType ftype,Mat *F)
2643: {
2644:   Mat            B;
2646:   Mat_MUMPS      *mumps;
2647:   PetscBool      isSeqBAIJ;

2650:   /* Create the factorization matrix */
2651:   PetscObjectTypeCompare((PetscObject)A,MATSEQBAIJ,&isSeqBAIJ);
2652:   MatCreate(PetscObjectComm((PetscObject)A),&B);
2653:   MatSetSizes(B,A->rmap->n,A->cmap->n,A->rmap->N,A->cmap->N);
2654:   PetscStrallocpy("mumps",&((PetscObject)B)->type_name);
2655:   MatSetUp(B);

2657:   PetscNewLog(B,&mumps);
2658:   if (ftype == MAT_FACTOR_LU) {
2659:     B->ops->lufactorsymbolic = MatLUFactorSymbolic_BAIJMUMPS;
2660:     B->factortype            = MAT_FACTOR_LU;
2661:     if (isSeqBAIJ) mumps->ConvertToTriples = MatConvertToTriples_seqbaij_seqaij;
2662:     else mumps->ConvertToTriples = MatConvertToTriples_mpibaij_mpiaij;
2663:     mumps->sym = 0;
2664:   } else SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP,"Cannot use PETSc BAIJ matrices with MUMPS Cholesky, use SBAIJ or AIJ matrix instead\n");

2666:   B->ops->getinfo     = MatGetInfo_External;
2667:   B->ops->view        = MatView_MUMPS;

2669:   PetscObjectComposeFunction((PetscObject)B,"MatFactorGetSolverType_C",MatFactorGetSolverType_mumps);
2670:   PetscObjectComposeFunction((PetscObject)B,"MatFactorSetSchurIS_C",MatFactorSetSchurIS_MUMPS);
2671:   PetscObjectComposeFunction((PetscObject)B,"MatFactorCreateSchurComplement_C",MatFactorCreateSchurComplement_MUMPS);
2672:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsSetIcntl_C",MatMumpsSetIcntl_MUMPS);
2673:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsGetIcntl_C",MatMumpsGetIcntl_MUMPS);
2674:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsSetCntl_C",MatMumpsSetCntl_MUMPS);
2675:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsGetCntl_C",MatMumpsGetCntl_MUMPS);
2676:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsGetInfo_C",MatMumpsGetInfo_MUMPS);
2677:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsGetInfog_C",MatMumpsGetInfog_MUMPS);
2678:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsGetRinfo_C",MatMumpsGetRinfo_MUMPS);
2679:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsGetRinfog_C",MatMumpsGetRinfog_MUMPS);
2680:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsGetInverse_C",MatMumpsGetInverse_MUMPS);
2681:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsGetInverseTranspose_C",MatMumpsGetInverseTranspose_MUMPS);

2683:   /* set solvertype */
2684:   PetscFree(B->solvertype);
2685:   PetscStrallocpy(MATSOLVERMUMPS,&B->solvertype);

2687:   B->ops->destroy = MatDestroy_MUMPS;
2688:   B->data         = (void*)mumps;

2690:   PetscInitializeMUMPS(A,mumps);

2692:   *F = B;
2693:   return(0);
2694: }

2696: /* MatGetFactor for Seq and MPI SELL matrices */
2697: static PetscErrorCode MatGetFactor_sell_mumps(Mat A,MatFactorType ftype,Mat *F)
2698: {
2699:   Mat            B;
2701:   Mat_MUMPS      *mumps;
2702:   PetscBool      isSeqSELL;

2705:   /* Create the factorization matrix */
2706:   PetscObjectTypeCompare((PetscObject)A,MATSEQSELL,&isSeqSELL);
2707:   MatCreate(PetscObjectComm((PetscObject)A),&B);
2708:   MatSetSizes(B,A->rmap->n,A->cmap->n,A->rmap->N,A->cmap->N);
2709:   PetscStrallocpy("mumps",&((PetscObject)B)->type_name);
2710:   MatSetUp(B);

2712:   PetscNewLog(B,&mumps);

2714:   B->ops->view        = MatView_MUMPS;
2715:   B->ops->getinfo     = MatGetInfo_MUMPS;

2717:   PetscObjectComposeFunction((PetscObject)B,"MatFactorGetSolverType_C",MatFactorGetSolverType_mumps);
2718:   PetscObjectComposeFunction((PetscObject)B,"MatFactorSetSchurIS_C",MatFactorSetSchurIS_MUMPS);
2719:   PetscObjectComposeFunction((PetscObject)B,"MatFactorCreateSchurComplement_C",MatFactorCreateSchurComplement_MUMPS);
2720:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsSetIcntl_C",MatMumpsSetIcntl_MUMPS);
2721:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsGetIcntl_C",MatMumpsGetIcntl_MUMPS);
2722:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsSetCntl_C",MatMumpsSetCntl_MUMPS);
2723:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsGetCntl_C",MatMumpsGetCntl_MUMPS);
2724:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsGetInfo_C",MatMumpsGetInfo_MUMPS);
2725:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsGetInfog_C",MatMumpsGetInfog_MUMPS);
2726:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsGetRinfo_C",MatMumpsGetRinfo_MUMPS);
2727:   PetscObjectComposeFunction((PetscObject)B,"MatMumpsGetRinfog_C",MatMumpsGetRinfog_MUMPS);

2729:   if (ftype == MAT_FACTOR_LU) {
2730:     B->ops->lufactorsymbolic = MatLUFactorSymbolic_AIJMUMPS;
2731:     B->factortype            = MAT_FACTOR_LU;
2732:     if (isSeqSELL) mumps->ConvertToTriples = MatConvertToTriples_seqsell_seqaij;
2733:     else SETERRQ(PetscObjectComm((PetscObject)A),PETSC_ERR_SUP,"To be implemented");
2734:     mumps->sym = 0;
2735:   } else SETERRQ(PetscObjectComm((PetscObject)A),PETSC_ERR_SUP,"To be implemented");

2737:   /* set solvertype */
2738:   PetscFree(B->solvertype);
2739:   PetscStrallocpy(MATSOLVERMUMPS,&B->solvertype);

2741:   B->ops->destroy = MatDestroy_MUMPS;
2742:   B->data         = (void*)mumps;

2744:   PetscInitializeMUMPS(A,mumps);

2746:   *F = B;
2747:   return(0);
2748: }

2750: PETSC_EXTERN PetscErrorCode MatSolverTypeRegister_MUMPS(void)
2751: {

2755:   MatSolverTypeRegister(MATSOLVERMUMPS,MATMPIAIJ,MAT_FACTOR_LU,MatGetFactor_aij_mumps);
2756:   MatSolverTypeRegister(MATSOLVERMUMPS,MATMPIAIJ,MAT_FACTOR_CHOLESKY,MatGetFactor_aij_mumps);
2757:   MatSolverTypeRegister(MATSOLVERMUMPS,MATMPIBAIJ,MAT_FACTOR_LU,MatGetFactor_baij_mumps);
2758:   MatSolverTypeRegister(MATSOLVERMUMPS,MATMPIBAIJ,MAT_FACTOR_CHOLESKY,MatGetFactor_baij_mumps);
2759:   MatSolverTypeRegister(MATSOLVERMUMPS,MATMPISBAIJ,MAT_FACTOR_CHOLESKY,MatGetFactor_sbaij_mumps);
2760:   MatSolverTypeRegister(MATSOLVERMUMPS,MATSEQAIJ,MAT_FACTOR_LU,MatGetFactor_aij_mumps);
2761:   MatSolverTypeRegister(MATSOLVERMUMPS,MATSEQAIJ,MAT_FACTOR_CHOLESKY,MatGetFactor_aij_mumps);
2762:   MatSolverTypeRegister(MATSOLVERMUMPS,MATSEQBAIJ,MAT_FACTOR_LU,MatGetFactor_baij_mumps);
2763:   MatSolverTypeRegister(MATSOLVERMUMPS,MATSEQBAIJ,MAT_FACTOR_CHOLESKY,MatGetFactor_baij_mumps);
2764:   MatSolverTypeRegister(MATSOLVERMUMPS,MATSEQSBAIJ,MAT_FACTOR_CHOLESKY,MatGetFactor_sbaij_mumps);
2765:   MatSolverTypeRegister(MATSOLVERMUMPS,MATSEQSELL,MAT_FACTOR_LU,MatGetFactor_sell_mumps);
2766:   return(0);
2767: }