Actual source code: telescope_dmda.c
petsc-3.9.4 2018-09-11
3: #include <petsc/private/matimpl.h>
4: #include <petsc/private/pcimpl.h>
5: #include <petsc/private/dmimpl.h>
6: #include <petscksp.h>
7: #include <petscdm.h>
8: #include <petscdmda.h>
10: #include "../src/ksp/pc/impls/telescope/telescope.h"
12: static PetscBool cited = PETSC_FALSE;
13: static const char citation[] =
14: "@inproceedings{MaySananRuppKnepleySmith2016,\n"
15: " title = {Extreme-Scale Multigrid Components within PETSc},\n"
16: " author = {Dave A. May and Patrick Sanan and Karl Rupp and Matthew G. Knepley and Barry F. Smith},\n"
17: " booktitle = {Proceedings of the Platform for Advanced Scientific Computing Conference},\n"
18: " series = {PASC '16},\n"
19: " isbn = {978-1-4503-4126-4},\n"
20: " location = {Lausanne, Switzerland},\n"
21: " pages = {5:1--5:12},\n"
22: " articleno = {5},\n"
23: " numpages = {12},\n"
24: " url = {http://doi.acm.org/10.1145/2929908.2929913},\n"
25: " doi = {10.1145/2929908.2929913},\n"
26: " acmid = {2929913},\n"
27: " publisher = {ACM},\n"
28: " address = {New York, NY, USA},\n"
29: " keywords = {GPU, HPC, agglomeration, coarse-level solver, multigrid, parallel computing, preconditioning},\n"
30: " year = {2016}\n"
31: "}\n";
33: PetscErrorCode _DMDADetermineRankFromGlobalIJK(PetscInt dim,PetscInt i,PetscInt j,PetscInt k,
34: PetscInt Mp,PetscInt Np,PetscInt Pp,
35: PetscInt start_i[],PetscInt start_j[],PetscInt start_k[],
36: PetscInt span_i[],PetscInt span_j[],PetscInt span_k[],
37: PetscMPIInt *_pi,PetscMPIInt *_pj,PetscMPIInt *_pk,PetscMPIInt *rank_re)
38: {
39: PetscInt pi,pj,pk,n;
42: *rank_re = -1;
43: if (_pi) *_pi = -1;
44: if (_pj) *_pj = -1;
45: if (_pk) *_pk = -1;
46: pi = pj = pk = -1;
47: if (_pi) {
48: for (n=0; n<Mp; n++) {
49: if ( (i >= start_i[n]) && (i < start_i[n]+span_i[n]) ) {
50: pi = n;
51: break;
52: }
53: }
54: if (pi == -1) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_USER,"[dmda-ijk] pi cannot be determined : range %D, val %D",Mp,i);
55: *_pi = pi;
56: }
58: if (_pj) {
59: for (n=0; n<Np; n++) {
60: if ( (j >= start_j[n]) && (j < start_j[n]+span_j[n]) ) {
61: pj = n;
62: break;
63: }
64: }
65: if (pj == -1) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_USER,"[dmda-ijk] pj cannot be determined : range %D, val %D",Np,j);
66: *_pj = pj;
67: }
69: if (_pk) {
70: for (n=0; n<Pp; n++) {
71: if ( (k >= start_k[n]) && (k < start_k[n]+span_k[n]) ) {
72: pk = n;
73: break;
74: }
75: }
76: if (pk == -1) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_USER,"[dmda-ijk] pk cannot be determined : range %D, val %D",Pp,k);
77: *_pk = pk;
78: }
80: switch (dim) {
81: case 1:
82: *rank_re = pi;
83: break;
84: case 2:
85: *rank_re = pi + pj * Mp;
86: break;
87: case 3:
88: *rank_re = pi + pj * Mp + pk * (Mp*Np);
89: break;
90: }
91: return(0);
92: }
94: PetscErrorCode _DMDADetermineGlobalS0(PetscInt dim,PetscMPIInt rank_re,PetscInt Mp_re,PetscInt Np_re,PetscInt Pp_re,
95: PetscInt range_i_re[],PetscInt range_j_re[],PetscInt range_k_re[],PetscInt *s0)
96: {
97: PetscInt i,j,k,start_IJK = 0;
98: PetscInt rank_ijk;
101: switch (dim) {
102: case 1:
103: for (i=0; i<Mp_re; i++) {
104: rank_ijk = i;
105: if (rank_ijk < rank_re) {
106: start_IJK += range_i_re[i];
107: }
108: }
109: break;
110: case 2:
111: for (j=0; j<Np_re; j++) {
112: for (i=0; i<Mp_re; i++) {
113: rank_ijk = i + j*Mp_re;
114: if (rank_ijk < rank_re) {
115: start_IJK += range_i_re[i]*range_j_re[j];
116: }
117: }
118: }
119: break;
120: case 3:
121: for (k=0; k<Pp_re; k++) {
122: for (j=0; j<Np_re; j++) {
123: for (i=0; i<Mp_re; i++) {
124: rank_ijk = i + j*Mp_re + k*Mp_re*Np_re;
125: if (rank_ijk < rank_re) {
126: start_IJK += range_i_re[i]*range_j_re[j]*range_k_re[k];
127: }
128: }
129: }
130: }
131: break;
132: }
133: *s0 = start_IJK;
134: return(0);
135: }
137: PetscErrorCode PCTelescopeSetUp_dmda_repart_coors2d(PetscSubcomm psubcomm,DM dm,DM subdm)
138: {
140: DM cdm;
141: Vec coor,coor_natural,perm_coors;
142: PetscInt i,j,si,sj,ni,nj,M,N,Ml,Nl,c,nidx;
143: PetscInt *fine_indices;
144: IS is_fine,is_local;
145: VecScatter sctx;
148: DMGetCoordinates(dm,&coor);
149: if (!coor) return(0);
150: if (isActiveRank(psubcomm)) {
151: DMDASetUniformCoordinates(subdm,0.0,1.0,0.0,1.0,0.0,1.0);
152: }
153: /* Get the coordinate vector from the distributed array */
154: DMGetCoordinateDM(dm,&cdm);
155: DMDACreateNaturalVector(cdm,&coor_natural);
157: DMDAGlobalToNaturalBegin(cdm,coor,INSERT_VALUES,coor_natural);
158: DMDAGlobalToNaturalEnd(cdm,coor,INSERT_VALUES,coor_natural);
160: /* get indices of the guys I want to grab */
161: DMDAGetInfo(dm,NULL,&M,&N,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL);
162: if (isActiveRank(psubcomm)) {
163: DMDAGetCorners(subdm,&si,&sj,NULL,&ni,&nj,NULL);
164: Ml = ni;
165: Nl = nj;
166: } else {
167: si = sj = 0;
168: ni = nj = 0;
169: Ml = Nl = 0;
170: }
172: PetscMalloc1(Ml*Nl*2,&fine_indices);
173: c = 0;
174: if (isActiveRank(psubcomm)) {
175: for (j=sj; j<sj+nj; j++) {
176: for (i=si; i<si+ni; i++) {
177: nidx = (i) + (j)*M;
178: fine_indices[c ] = 2 * nidx ;
179: fine_indices[c+1] = 2 * nidx + 1 ;
180: c = c + 2;
181: }
182: }
183: if (c != Ml*Nl*2) SETERRQ3(PETSC_COMM_SELF,PETSC_ERR_PLIB,"c %D should equal 2 * Ml %D * Nl %D",c,Ml,Nl);
184: }
186: /* generate scatter */
187: ISCreateGeneral(PetscObjectComm((PetscObject)dm),Ml*Nl*2,fine_indices,PETSC_USE_POINTER,&is_fine);
188: ISCreateStride(PETSC_COMM_SELF,Ml*Nl*2,0,1,&is_local);
190: /* scatter */
191: VecCreate(PETSC_COMM_SELF,&perm_coors);
192: VecSetSizes(perm_coors,PETSC_DECIDE,Ml*Nl*2);
193: VecSetType(perm_coors,VECSEQ);
195: VecScatterCreate(coor_natural,is_fine,perm_coors,is_local,&sctx);
196: VecScatterBegin(sctx,coor_natural,perm_coors,INSERT_VALUES,SCATTER_FORWARD);
197: VecScatterEnd( sctx,coor_natural,perm_coors,INSERT_VALUES,SCATTER_FORWARD);
198: /* access */
199: if (isActiveRank(psubcomm)) {
200: Vec _coors;
201: const PetscScalar *LA_perm;
202: PetscScalar *LA_coors;
204: DMGetCoordinates(subdm,&_coors);
205: VecGetArrayRead(perm_coors,&LA_perm);
206: VecGetArray(_coors,&LA_coors);
207: for (i=0; i<Ml*Nl*2; i++) {
208: LA_coors[i] = LA_perm[i];
209: }
210: VecRestoreArray(_coors,&LA_coors);
211: VecRestoreArrayRead(perm_coors,&LA_perm);
212: }
214: /* update local coords */
215: if (isActiveRank(psubcomm)) {
216: DM _dmc;
217: Vec _coors,_coors_local;
218: DMGetCoordinateDM(subdm,&_dmc);
219: DMGetCoordinates(subdm,&_coors);
220: DMGetCoordinatesLocal(subdm,&_coors_local);
221: DMGlobalToLocalBegin(_dmc,_coors,INSERT_VALUES,_coors_local);
222: DMGlobalToLocalEnd(_dmc,_coors,INSERT_VALUES,_coors_local);
223: }
224: VecScatterDestroy(&sctx);
225: ISDestroy(&is_fine);
226: PetscFree(fine_indices);
227: ISDestroy(&is_local);
228: VecDestroy(&perm_coors);
229: VecDestroy(&coor_natural);
230: return(0);
231: }
233: PetscErrorCode PCTelescopeSetUp_dmda_repart_coors3d(PetscSubcomm psubcomm,DM dm,DM subdm)
234: {
236: DM cdm;
237: Vec coor,coor_natural,perm_coors;
238: PetscInt i,j,k,si,sj,sk,ni,nj,nk,M,N,P,Ml,Nl,Pl,c,nidx;
239: PetscInt *fine_indices;
240: IS is_fine,is_local;
241: VecScatter sctx;
244: DMGetCoordinates(dm,&coor);
245: if (!coor) return(0);
247: if (isActiveRank(psubcomm)) {
248: DMDASetUniformCoordinates(subdm,0.0,1.0,0.0,1.0,0.0,1.0);
249: }
251: /* Get the coordinate vector from the distributed array */
252: DMGetCoordinateDM(dm,&cdm);
253: DMDACreateNaturalVector(cdm,&coor_natural);
254: DMDAGlobalToNaturalBegin(cdm,coor,INSERT_VALUES,coor_natural);
255: DMDAGlobalToNaturalEnd(cdm,coor,INSERT_VALUES,coor_natural);
257: /* get indices of the guys I want to grab */
258: DMDAGetInfo(dm,NULL,&M,&N,&P,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL);
260: if (isActiveRank(psubcomm)) {
261: DMDAGetCorners(subdm,&si,&sj,&sk,&ni,&nj,&nk);
262: Ml = ni;
263: Nl = nj;
264: Pl = nk;
265: } else {
266: si = sj = sk = 0;
267: ni = nj = nk = 0;
268: Ml = Nl = Pl = 0;
269: }
271: PetscMalloc1(Ml*Nl*Pl*3,&fine_indices);
273: c = 0;
274: if (isActiveRank(psubcomm)) {
275: for (k=sk; k<sk+nk; k++) {
276: for (j=sj; j<sj+nj; j++) {
277: for (i=si; i<si+ni; i++) {
278: nidx = (i) + (j)*M + (k)*M*N;
279: fine_indices[c ] = 3 * nidx ;
280: fine_indices[c+1] = 3 * nidx + 1 ;
281: fine_indices[c+2] = 3 * nidx + 2 ;
282: c = c + 3;
283: }
284: }
285: }
286: }
288: /* generate scatter */
289: ISCreateGeneral(PetscObjectComm((PetscObject)dm),Ml*Nl*Pl*3,fine_indices,PETSC_USE_POINTER,&is_fine);
290: ISCreateStride(PETSC_COMM_SELF,Ml*Nl*Pl*3,0,1,&is_local);
292: /* scatter */
293: VecCreate(PETSC_COMM_SELF,&perm_coors);
294: VecSetSizes(perm_coors,PETSC_DECIDE,Ml*Nl*Pl*3);
295: VecSetType(perm_coors,VECSEQ);
296: VecScatterCreate(coor_natural,is_fine,perm_coors,is_local,&sctx);
297: VecScatterBegin(sctx,coor_natural,perm_coors,INSERT_VALUES,SCATTER_FORWARD);
298: VecScatterEnd( sctx,coor_natural,perm_coors,INSERT_VALUES,SCATTER_FORWARD);
300: /* access */
301: if (isActiveRank(psubcomm)) {
302: Vec _coors;
303: const PetscScalar *LA_perm;
304: PetscScalar *LA_coors;
306: DMGetCoordinates(subdm,&_coors);
307: VecGetArrayRead(perm_coors,&LA_perm);
308: VecGetArray(_coors,&LA_coors);
309: for (i=0; i<Ml*Nl*Pl*3; i++) {
310: LA_coors[i] = LA_perm[i];
311: }
312: VecRestoreArray(_coors,&LA_coors);
313: VecRestoreArrayRead(perm_coors,&LA_perm);
314: }
316: /* update local coords */
317: if (isActiveRank(psubcomm)) {
318: DM _dmc;
319: Vec _coors,_coors_local;
321: DMGetCoordinateDM(subdm,&_dmc);
322: DMGetCoordinates(subdm,&_coors);
323: DMGetCoordinatesLocal(subdm,&_coors_local);
324: DMGlobalToLocalBegin(_dmc,_coors,INSERT_VALUES,_coors_local);
325: DMGlobalToLocalEnd(_dmc,_coors,INSERT_VALUES,_coors_local);
326: }
328: VecScatterDestroy(&sctx);
329: ISDestroy(&is_fine);
330: PetscFree(fine_indices);
331: ISDestroy(&is_local);
332: VecDestroy(&perm_coors);
333: VecDestroy(&coor_natural);
334: return(0);
335: }
337: PetscErrorCode PCTelescopeSetUp_dmda_repart_coors(PC pc,PC_Telescope sred,PC_Telescope_DMDACtx *ctx)
338: {
339: PetscInt dim;
340: DM dm,subdm;
341: PetscSubcomm psubcomm;
342: MPI_Comm comm;
343: Vec coor;
347: PCGetDM(pc,&dm);
348: DMGetCoordinates(dm,&coor);
349: if (!coor) return(0);
350: psubcomm = sred->psubcomm;
351: comm = PetscSubcommParent(psubcomm);
352: subdm = ctx->dmrepart;
355: PetscInfo(pc,"PCTelescope: setting up the coordinates (DMDA)\n");
356: DMDAGetInfo(dm,&dim,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL);
357: switch (dim) {
358: case 1: SETERRQ(comm,PETSC_ERR_SUP,"Telescope: DMDA (1D) repartitioning not provided");
359: break;
360: case 2: PCTelescopeSetUp_dmda_repart_coors2d(psubcomm,dm,subdm);
361: break;
362: case 3: PCTelescopeSetUp_dmda_repart_coors3d(psubcomm,dm,subdm);
363: break;
364: }
365: return(0);
366: }
368: /* setup repartitioned dm */
369: PetscErrorCode PCTelescopeSetUp_dmda_repart(PC pc,PC_Telescope sred,PC_Telescope_DMDACtx *ctx)
370: {
371: PetscErrorCode ierr;
372: DM dm;
373: PetscInt dim,nx,ny,nz,ndof,nsw,sum,k;
374: DMBoundaryType bx,by,bz;
375: DMDAStencilType stencil;
376: const PetscInt *_range_i_re;
377: const PetscInt *_range_j_re;
378: const PetscInt *_range_k_re;
379: DMDAInterpolationType itype;
380: PetscInt refine_x,refine_y,refine_z;
381: MPI_Comm comm,subcomm;
382: const char *prefix;
385: comm = PetscSubcommParent(sred->psubcomm);
386: subcomm = PetscSubcommChild(sred->psubcomm);
387: PCGetDM(pc,&dm);
389: DMDAGetInfo(dm,&dim,&nx,&ny,&nz,NULL,NULL,NULL,&ndof,&nsw,&bx,&by,&bz,&stencil);
390: DMDAGetInterpolationType(dm,&itype);
391: DMDAGetRefinementFactor(dm,&refine_x,&refine_y,&refine_z);
393: ctx->dmrepart = NULL;
394: _range_i_re = _range_j_re = _range_k_re = NULL;
395: /* Create DMDA on the child communicator */
396: if (isActiveRank(sred->psubcomm)) {
397: switch (dim) {
398: case 1:
399: PetscInfo(pc,"PCTelescope: setting up the DMDA on comm subset (1D)\n");
400: /*DMDACreate1d(subcomm,bx,nx,ndof,nsw,NULL,&ctx->dmrepart);*/
401: ny = nz = 1;
402: by = bz = DM_BOUNDARY_NONE;
403: break;
404: case 2:
405: PetscInfo(pc,"PCTelescope: setting up the DMDA on comm subset (2D)\n");
406: /*DMDACreate2d(subcomm,bx,by,stencil,nx,ny, PETSC_DECIDE,PETSC_DECIDE, ndof,nsw, NULL,NULL,&ctx->dmrepart);*/
407: nz = 1;
408: bz = DM_BOUNDARY_NONE;
409: break;
410: case 3:
411: PetscInfo(pc,"PCTelescope: setting up the DMDA on comm subset (3D)\n");
412: /*DMDACreate3d(subcomm,bx,by,bz,stencil,nx,ny,nz, PETSC_DECIDE,PETSC_DECIDE,PETSC_DECIDE, ndof,nsw, NULL,NULL,NULL,&ctx->dmrepart);*/
413: break;
414: }
415: /*
416: The API DMDACreate1d(), DMDACreate2d(), DMDACreate3d() does not allow us to set/append
417: a unique option prefix for the DM, thus I prefer to expose the contents of these API's here.
418: This allows users to control the partitioning of the subDM.
419: */
420: DMDACreate(subcomm,&ctx->dmrepart);
421: /* Set unique option prefix name */
422: KSPGetOptionsPrefix(sred->ksp,&prefix);
423: DMSetOptionsPrefix(ctx->dmrepart,prefix);
424: DMAppendOptionsPrefix(ctx->dmrepart,"repart_");
425: /* standard setup from DMDACreate{1,2,3}d() */
426: DMSetDimension(ctx->dmrepart,dim);
427: DMDASetSizes(ctx->dmrepart,nx,ny,nz);
428: DMDASetNumProcs(ctx->dmrepart,PETSC_DECIDE,PETSC_DECIDE,PETSC_DECIDE);
429: DMDASetBoundaryType(ctx->dmrepart,bx,by,bz);
430: DMDASetDof(ctx->dmrepart,ndof);
431: DMDASetStencilType(ctx->dmrepart,stencil);
432: DMDASetStencilWidth(ctx->dmrepart,nsw);
433: DMDASetOwnershipRanges(ctx->dmrepart,NULL,NULL,NULL);
434: DMSetFromOptions(ctx->dmrepart);
435: DMSetUp(ctx->dmrepart);
436: /* Set refinement factors and interpolation type from the partent */
437: DMDASetRefinementFactor(ctx->dmrepart,refine_x,refine_y,refine_z);
438: DMDASetInterpolationType(ctx->dmrepart,itype);
440: DMDAGetInfo(ctx->dmrepart,NULL,NULL,NULL,NULL,&ctx->Mp_re,&ctx->Np_re,&ctx->Pp_re,NULL,NULL,NULL,NULL,NULL,NULL);
441: DMDAGetOwnershipRanges(ctx->dmrepart,&_range_i_re,&_range_j_re,&_range_k_re);
443: ctx->dmrepart->ops->creatematrix = dm->ops->creatematrix;
444: ctx->dmrepart->ops->createdomaindecomposition = dm->ops->createdomaindecomposition;
445: }
447: /* generate ranges for repartitioned dm */
448: /* note - assume rank 0 always participates */
449: MPI_Bcast(&ctx->Mp_re,1,MPIU_INT,0,comm);
450: MPI_Bcast(&ctx->Np_re,1,MPIU_INT,0,comm);
451: MPI_Bcast(&ctx->Pp_re,1,MPIU_INT,0,comm);
453: PetscCalloc1(ctx->Mp_re,&ctx->range_i_re);
454: PetscCalloc1(ctx->Np_re,&ctx->range_j_re);
455: PetscCalloc1(ctx->Pp_re,&ctx->range_k_re);
457: if (_range_i_re) {PetscMemcpy(ctx->range_i_re,_range_i_re,sizeof(PetscInt)*ctx->Mp_re);}
458: if (_range_j_re) {PetscMemcpy(ctx->range_j_re,_range_j_re,sizeof(PetscInt)*ctx->Np_re);}
459: if (_range_k_re) {PetscMemcpy(ctx->range_k_re,_range_k_re,sizeof(PetscInt)*ctx->Pp_re);}
461: MPI_Bcast(ctx->range_i_re,ctx->Mp_re,MPIU_INT,0,comm);
462: MPI_Bcast(ctx->range_j_re,ctx->Np_re,MPIU_INT,0,comm);
463: MPI_Bcast(ctx->range_k_re,ctx->Pp_re,MPIU_INT,0,comm);
465: PetscMalloc1(ctx->Mp_re,&ctx->start_i_re);
466: PetscMalloc1(ctx->Np_re,&ctx->start_j_re);
467: PetscMalloc1(ctx->Pp_re,&ctx->start_k_re);
469: sum = 0;
470: for (k=0; k<ctx->Mp_re; k++) {
471: ctx->start_i_re[k] = sum;
472: sum += ctx->range_i_re[k];
473: }
475: sum = 0;
476: for (k=0; k<ctx->Np_re; k++) {
477: ctx->start_j_re[k] = sum;
478: sum += ctx->range_j_re[k];
479: }
481: sum = 0;
482: for (k=0; k<ctx->Pp_re; k++) {
483: ctx->start_k_re[k] = sum;
484: sum += ctx->range_k_re[k];
485: }
487: /* attach repartitioned dm to child ksp */
488: {
489: PetscErrorCode (*dmksp_func)(KSP,Mat,Mat,void*);
490: void *dmksp_ctx;
492: DMKSPGetComputeOperators(dm,&dmksp_func,&dmksp_ctx);
494: /* attach dm to ksp on sub communicator */
495: if (isActiveRank(sred->psubcomm)) {
496: KSPSetDM(sred->ksp,ctx->dmrepart);
498: if (!dmksp_func || sred->ignore_kspcomputeoperators) {
499: KSPSetDMActive(sred->ksp,PETSC_FALSE);
500: } else {
501: /* sub ksp inherits dmksp_func and context provided by user */
502: KSPSetComputeOperators(sred->ksp,dmksp_func,dmksp_ctx);
503: KSPSetDMActive(sred->ksp,PETSC_TRUE);
504: }
505: }
506: }
507: return(0);
508: }
510: PetscErrorCode PCTelescopeSetUp_dmda_permutation_3d(PC pc,PC_Telescope sred,PC_Telescope_DMDACtx *ctx)
511: {
513: DM dm;
514: MPI_Comm comm;
515: Mat Pscalar,P;
516: PetscInt ndof;
517: PetscInt i,j,k,location,startI[3],endI[3],lenI[3],nx,ny,nz;
518: PetscInt sr,er,Mr;
519: Vec V;
522: PetscInfo(pc,"PCTelescope: setting up the permutation matrix (DMDA-3D)\n");
523: PetscObjectGetComm((PetscObject)pc,&comm);
525: PCGetDM(pc,&dm);
526: DMDAGetInfo(dm,NULL,&nx,&ny,&nz,NULL,NULL,NULL,&ndof,NULL,NULL,NULL,NULL,NULL);
528: DMGetGlobalVector(dm,&V);
529: VecGetSize(V,&Mr);
530: VecGetOwnershipRange(V,&sr,&er);
531: DMRestoreGlobalVector(dm,&V);
532: sr = sr / ndof;
533: er = er / ndof;
534: Mr = Mr / ndof;
536: MatCreate(comm,&Pscalar);
537: MatSetSizes(Pscalar,(er-sr),(er-sr),Mr,Mr);
538: MatSetType(Pscalar,MATAIJ);
539: MatSeqAIJSetPreallocation(Pscalar,1,NULL);
540: MatMPIAIJSetPreallocation(Pscalar,1,NULL,1,NULL);
542: DMDAGetCorners(dm,NULL,NULL,NULL,&lenI[0],&lenI[1],&lenI[2]);
543: DMDAGetCorners(dm,&startI[0],&startI[1],&startI[2],&endI[0],&endI[1],&endI[2]);
544: endI[0] += startI[0];
545: endI[1] += startI[1];
546: endI[2] += startI[2];
548: for (k=startI[2]; k<endI[2]; k++) {
549: for (j=startI[1]; j<endI[1]; j++) {
550: for (i=startI[0]; i<endI[0]; i++) {
551: PetscMPIInt rank_ijk_re,rank_reI[3];
552: PetscInt s0_re;
553: PetscInt ii,jj,kk,local_ijk_re,mapped_ijk;
554: PetscInt lenI_re[3];
556: location = (i - startI[0]) + (j - startI[1])*lenI[0] + (k - startI[2])*lenI[0]*lenI[1];
557: _DMDADetermineRankFromGlobalIJK(3,i,j,k, ctx->Mp_re,ctx->Np_re,ctx->Pp_re,
558: ctx->start_i_re,ctx->start_j_re,ctx->start_k_re,
559: ctx->range_i_re,ctx->range_j_re,ctx->range_k_re,
560: &rank_reI[0],&rank_reI[1],&rank_reI[2],&rank_ijk_re);
561: _DMDADetermineGlobalS0(3,rank_ijk_re, ctx->Mp_re,ctx->Np_re,ctx->Pp_re, ctx->range_i_re,ctx->range_j_re,ctx->range_k_re, &s0_re);
562: ii = i - ctx->start_i_re[ rank_reI[0] ];
563: if (ii < 0) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_USER,"[dmdarepart-perm3d] index error ii");
564: jj = j - ctx->start_j_re[ rank_reI[1] ];
565: if (jj < 0) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_USER,"[dmdarepart-perm3d] index error jj");
566: kk = k - ctx->start_k_re[ rank_reI[2] ];
567: if (kk < 0) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_USER,"[dmdarepart-perm3d] index error kk");
568: lenI_re[0] = ctx->range_i_re[ rank_reI[0] ];
569: lenI_re[1] = ctx->range_j_re[ rank_reI[1] ];
570: lenI_re[2] = ctx->range_k_re[ rank_reI[2] ];
571: local_ijk_re = ii + jj * lenI_re[0] + kk * lenI_re[0] * lenI_re[1];
572: mapped_ijk = s0_re + local_ijk_re;
573: MatSetValue(Pscalar,sr+location,mapped_ijk,1.0,INSERT_VALUES);
574: }
575: }
576: }
577: MatAssemblyBegin(Pscalar,MAT_FINAL_ASSEMBLY);
578: MatAssemblyEnd(Pscalar,MAT_FINAL_ASSEMBLY);
579: MatCreateMAIJ(Pscalar,ndof,&P);
580: MatDestroy(&Pscalar);
581: ctx->permutation = P;
582: return(0);
583: }
585: PetscErrorCode PCTelescopeSetUp_dmda_permutation_2d(PC pc,PC_Telescope sred,PC_Telescope_DMDACtx *ctx)
586: {
588: DM dm;
589: MPI_Comm comm;
590: Mat Pscalar,P;
591: PetscInt ndof;
592: PetscInt i,j,location,startI[2],endI[2],lenI[2],nx,ny,nz;
593: PetscInt sr,er,Mr;
594: Vec V;
597: PetscInfo(pc,"PCTelescope: setting up the permutation matrix (DMDA-2D)\n");
598: PetscObjectGetComm((PetscObject)pc,&comm);
599: PCGetDM(pc,&dm);
600: DMDAGetInfo(dm,NULL,&nx,&ny,&nz,NULL,NULL,NULL,&ndof,NULL,NULL,NULL,NULL,NULL);
601: DMGetGlobalVector(dm,&V);
602: VecGetSize(V,&Mr);
603: VecGetOwnershipRange(V,&sr,&er);
604: DMRestoreGlobalVector(dm,&V);
605: sr = sr / ndof;
606: er = er / ndof;
607: Mr = Mr / ndof;
609: MatCreate(comm,&Pscalar);
610: MatSetSizes(Pscalar,(er-sr),(er-sr),Mr,Mr);
611: MatSetType(Pscalar,MATAIJ);
612: MatSeqAIJSetPreallocation(Pscalar,1,NULL);
613: MatMPIAIJSetPreallocation(Pscalar,1,NULL,1,NULL);
615: DMDAGetCorners(dm,NULL,NULL,NULL,&lenI[0],&lenI[1],NULL);
616: DMDAGetCorners(dm,&startI[0],&startI[1],NULL,&endI[0],&endI[1],NULL);
617: endI[0] += startI[0];
618: endI[1] += startI[1];
620: for (j=startI[1]; j<endI[1]; j++) {
621: for (i=startI[0]; i<endI[0]; i++) {
622: PetscMPIInt rank_ijk_re,rank_reI[3];
623: PetscInt s0_re;
624: PetscInt ii,jj,local_ijk_re,mapped_ijk;
625: PetscInt lenI_re[3];
627: location = (i - startI[0]) + (j - startI[1])*lenI[0];
628: _DMDADetermineRankFromGlobalIJK(2,i,j,0, ctx->Mp_re,ctx->Np_re,ctx->Pp_re,
629: ctx->start_i_re,ctx->start_j_re,ctx->start_k_re,
630: ctx->range_i_re,ctx->range_j_re,ctx->range_k_re,
631: &rank_reI[0],&rank_reI[1],NULL,&rank_ijk_re);
633: _DMDADetermineGlobalS0(2,rank_ijk_re, ctx->Mp_re,ctx->Np_re,ctx->Pp_re, ctx->range_i_re,ctx->range_j_re,ctx->range_k_re, &s0_re);
635: ii = i - ctx->start_i_re[ rank_reI[0] ];
636: if (ii < 0) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_USER,"[dmdarepart-perm2d] index error ii");
637: jj = j - ctx->start_j_re[ rank_reI[1] ];
638: if (jj < 0) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_USER,"[dmdarepart-perm2d] index error jj");
640: lenI_re[0] = ctx->range_i_re[ rank_reI[0] ];
641: lenI_re[1] = ctx->range_j_re[ rank_reI[1] ];
642: local_ijk_re = ii + jj * lenI_re[0];
643: mapped_ijk = s0_re + local_ijk_re;
644: MatSetValue(Pscalar,sr+location,mapped_ijk,1.0,INSERT_VALUES);
645: }
646: }
647: MatAssemblyBegin(Pscalar,MAT_FINAL_ASSEMBLY);
648: MatAssemblyEnd(Pscalar,MAT_FINAL_ASSEMBLY);
649: MatCreateMAIJ(Pscalar,ndof,&P);
650: MatDestroy(&Pscalar);
651: ctx->permutation = P;
652: return(0);
653: }
655: PetscErrorCode PCTelescopeSetUp_dmda_scatters(PC pc,PC_Telescope sred,PC_Telescope_DMDACtx *ctx)
656: {
658: Vec xred,yred,xtmp,x,xp;
659: VecScatter scatter;
660: IS isin;
661: Mat B;
662: PetscInt m,bs,st,ed;
663: MPI_Comm comm;
666: PetscObjectGetComm((PetscObject)pc,&comm);
667: PCGetOperators(pc,NULL,&B);
668: MatCreateVecs(B,&x,NULL);
669: MatGetBlockSize(B,&bs);
670: VecDuplicate(x,&xp);
671: m = 0;
672: xred = NULL;
673: yred = NULL;
674: if (isActiveRank(sred->psubcomm)) {
675: DMCreateGlobalVector(ctx->dmrepart,&xred);
676: VecDuplicate(xred,&yred);
677: VecGetOwnershipRange(xred,&st,&ed);
678: ISCreateStride(comm,ed-st,st,1,&isin);
679: VecGetLocalSize(xred,&m);
680: } else {
681: VecGetOwnershipRange(x,&st,&ed);
682: ISCreateStride(comm,0,st,1,&isin);
683: }
684: ISSetBlockSize(isin,bs);
685: VecCreate(comm,&xtmp);
686: VecSetSizes(xtmp,m,PETSC_DECIDE);
687: VecSetBlockSize(xtmp,bs);
688: VecSetType(xtmp,((PetscObject)x)->type_name);
689: VecScatterCreate(x,isin,xtmp,NULL,&scatter);
690: sred->xred = xred;
691: sred->yred = yred;
692: sred->isin = isin;
693: sred->scatter = scatter;
694: sred->xtmp = xtmp;
696: ctx->xp = xp;
697: VecDestroy(&x);
698: return(0);
699: }
701: PetscErrorCode PCTelescopeSetUp_dmda(PC pc,PC_Telescope sred)
702: {
703: PC_Telescope_DMDACtx *ctx;
704: PetscInt dim;
705: DM dm;
706: MPI_Comm comm;
707: PetscErrorCode ierr;
710: PetscInfo(pc,"PCTelescope: setup (DMDA)\n");
711: PetscMalloc1(1,&ctx);
712: PetscMemzero(ctx,sizeof(PC_Telescope_DMDACtx));
713: sred->dm_ctx = (void*)ctx;
715: PetscObjectGetComm((PetscObject)pc,&comm);
716: PCGetDM(pc,&dm);
717: DMDAGetInfo(dm,&dim,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL);
719: PCTelescopeSetUp_dmda_repart(pc,sred,ctx);
720: PCTelescopeSetUp_dmda_repart_coors(pc,sred,ctx);
721: switch (dim) {
722: case 1: SETERRQ(comm,PETSC_ERR_SUP,"Telescope: DMDA (1D) repartitioning not provided");
723: break;
724: case 2: PCTelescopeSetUp_dmda_permutation_2d(pc,sred,ctx);
725: break;
726: case 3: PCTelescopeSetUp_dmda_permutation_3d(pc,sred,ctx);
727: break;
728: }
729: PCTelescopeSetUp_dmda_scatters(pc,sred,ctx);
730: return(0);
731: }
733: PetscErrorCode PCTelescopeMatCreate_dmda_dmactivefalse(PC pc,PC_Telescope sred,MatReuse reuse,Mat *A)
734: {
736: PC_Telescope_DMDACtx *ctx;
737: MPI_Comm comm,subcomm;
738: Mat Bperm,Bred,B,P;
739: PetscInt nr,nc;
740: IS isrow,iscol;
741: Mat Blocal,*_Blocal;
744: PetscInfo(pc,"PCTelescope: updating the redundant preconditioned operator (DMDA)\n");
745: PetscObjectGetComm((PetscObject)pc,&comm);
746: subcomm = PetscSubcommChild(sred->psubcomm);
747: ctx = (PC_Telescope_DMDACtx*)sred->dm_ctx;
749: PCGetOperators(pc,NULL,&B);
750: MatGetSize(B,&nr,&nc);
752: P = ctx->permutation;
753: MatPtAP(B,P,MAT_INITIAL_MATRIX,1.1,&Bperm);
755: /* Get submatrices */
756: isrow = sred->isin;
757: ISCreateStride(comm,nc,0,1,&iscol);
759: MatCreateSubMatrices(Bperm,1,&isrow,&iscol,MAT_INITIAL_MATRIX,&_Blocal);
760: Blocal = *_Blocal;
761: Bred = NULL;
762: if (isActiveRank(sred->psubcomm)) {
763: PetscInt mm;
765: if (reuse != MAT_INITIAL_MATRIX) {Bred = *A;}
766: MatGetSize(Blocal,&mm,NULL);
767: /* MatCreateMPIMatConcatenateSeqMat(subcomm,Blocal,PETSC_DECIDE,reuse,&Bred); */
768: MatCreateMPIMatConcatenateSeqMat(subcomm,Blocal,mm,reuse,&Bred);
769: }
770: *A = Bred;
772: ISDestroy(&iscol);
773: MatDestroy(&Bperm);
774: MatDestroyMatrices(1,&_Blocal);
775: return(0);
776: }
778: PetscErrorCode PCTelescopeMatCreate_dmda(PC pc,PC_Telescope sred,MatReuse reuse,Mat *A)
779: {
781: DM dm;
782: PetscErrorCode (*dmksp_func)(KSP,Mat,Mat,void*);
783: void *dmksp_ctx;
786: PCGetDM(pc,&dm);
787: DMKSPGetComputeOperators(dm,&dmksp_func,&dmksp_ctx);
788: /* We assume that dmksp_func = NULL, is equivalent to dmActive = PETSC_FALSE */
789: if (dmksp_func && !sred->ignore_kspcomputeoperators) {
790: DM dmrepart;
791: Mat Ak;
793: *A = NULL;
794: if (isActiveRank(sred->psubcomm)) {
795: KSPGetDM(sred->ksp,&dmrepart);
796: if (reuse == MAT_INITIAL_MATRIX) {
797: DMCreateMatrix(dmrepart,&Ak);
798: *A = Ak;
799: } else if (reuse == MAT_REUSE_MATRIX) {
800: Ak = *A;
801: }
802: /*
803: There is no need to explicitly assemble the operator now,
804: the sub-KSP will call the method provided to KSPSetComputeOperators() during KSPSetUp()
805: */
806: }
807: } else {
808: PCTelescopeMatCreate_dmda_dmactivefalse(pc,sred,reuse,A);
809: }
810: return(0);
811: }
813: PetscErrorCode PCTelescopeSubNullSpaceCreate_dmda_Telescope(PC pc,PC_Telescope sred,MatNullSpace nullspace,MatNullSpace *sub_nullspace)
814: {
815: PetscErrorCode ierr;
816: PetscBool has_const;
817: PetscInt i,k,n = 0;
818: const Vec *vecs;
819: Vec *sub_vecs = NULL;
820: MPI_Comm subcomm;
821: PC_Telescope_DMDACtx *ctx;
824: ctx = (PC_Telescope_DMDACtx*)sred->dm_ctx;
825: subcomm = PetscSubcommChild(sred->psubcomm);
826: MatNullSpaceGetVecs(nullspace,&has_const,&n,&vecs);
828: if (isActiveRank(sred->psubcomm)) {
829: /* create new vectors */
830: if (n) {
831: VecDuplicateVecs(sred->xred,n,&sub_vecs);
832: }
833: }
835: /* copy entries */
836: for (k=0; k<n; k++) {
837: const PetscScalar *x_array;
838: PetscScalar *LA_sub_vec;
839: PetscInt st,ed;
841: /* permute vector into ordering associated with re-partitioned dmda */
842: MatMultTranspose(ctx->permutation,vecs[k],ctx->xp);
844: /* pull in vector x->xtmp */
845: VecScatterBegin(sred->scatter,ctx->xp,sred->xtmp,INSERT_VALUES,SCATTER_FORWARD);
846: VecScatterEnd(sred->scatter,ctx->xp,sred->xtmp,INSERT_VALUES,SCATTER_FORWARD);
848: /* copy vector entries into xred */
849: VecGetArrayRead(sred->xtmp,&x_array);
850: if (sub_vecs) {
851: if (sub_vecs[k]) {
852: VecGetOwnershipRange(sub_vecs[k],&st,&ed);
853: VecGetArray(sub_vecs[k],&LA_sub_vec);
854: for (i=0; i<ed-st; i++) {
855: LA_sub_vec[i] = x_array[i];
856: }
857: VecRestoreArray(sub_vecs[k],&LA_sub_vec);
858: }
859: }
860: VecRestoreArrayRead(sred->xtmp,&x_array);
861: }
863: if (isActiveRank(sred->psubcomm)) {
864: /* create new (near) nullspace for redundant object */
865: MatNullSpaceCreate(subcomm,has_const,n,sub_vecs,sub_nullspace);
866: VecDestroyVecs(n,&sub_vecs);
867: if (nullspace->remove) SETERRQ(PetscObjectComm((PetscObject)pc),PETSC_ERR_SUP,"Propagation of custom remove callbacks not supported when propagating (near) nullspaces with PCTelescope");
868: if (nullspace->rmctx) SETERRQ(PetscObjectComm((PetscObject)pc),PETSC_ERR_SUP,"Propagation of custom remove callback context not supported when propagating (near) nullspaces with PCTelescope");
869: }
871: return(0);
872: }
874: PetscErrorCode PCTelescopeMatNullSpaceCreate_dmda(PC pc,PC_Telescope sred,Mat sub_mat)
875: {
876: PetscErrorCode ierr;
877: Mat B;
880: PCGetOperators(pc,NULL,&B);
882: {
883: MatNullSpace nullspace,sub_nullspace;
884: MatGetNullSpace(B,&nullspace);
885: if (nullspace) {
886: PetscInfo(pc,"PCTelescope: generating nullspace (DMDA)\n");
887: PCTelescopeSubNullSpaceCreate_dmda_Telescope(pc,sred,nullspace,&sub_nullspace);
888: if (isActiveRank(sred->psubcomm)) {
889: MatSetNullSpace(sub_mat,sub_nullspace);
890: MatNullSpaceDestroy(&sub_nullspace);
891: }
892: }
893: }
895: {
896: MatNullSpace nearnullspace,sub_nearnullspace;
897: MatGetNullSpace(B,&nearnullspace);
898: if (nearnullspace) {
899: PetscInfo(pc,"PCTelescope: generating near nullspace (DMDA)\n");
900: PCTelescopeSubNullSpaceCreate_dmda_Telescope(pc,sred,nearnullspace,&sub_nearnullspace);
901: if (isActiveRank(sred->psubcomm)) {
902: MatSetNullSpace(sub_mat,sub_nearnullspace);
903: MatNullSpaceDestroy(&sub_nearnullspace);
904: }
905: }
906: }
907: return(0);
908: }
910: PetscErrorCode PCApply_Telescope_dmda(PC pc,Vec x,Vec y)
911: {
912: PC_Telescope sred = (PC_Telescope)pc->data;
913: PetscErrorCode ierr;
914: Mat perm;
915: Vec xtmp,xp,xred,yred;
916: PetscInt i,st,ed;
917: VecScatter scatter;
918: PetscScalar *array;
919: const PetscScalar *x_array;
920: PC_Telescope_DMDACtx *ctx;
922: ctx = (PC_Telescope_DMDACtx*)sred->dm_ctx;
923: xtmp = sred->xtmp;
924: scatter = sred->scatter;
925: xred = sred->xred;
926: yred = sred->yred;
927: perm = ctx->permutation;
928: xp = ctx->xp;
931: PetscCitationsRegister(citation,&cited);
933: /* permute vector into ordering associated with re-partitioned dmda */
934: MatMultTranspose(perm,x,xp);
936: /* pull in vector x->xtmp */
937: VecScatterBegin(scatter,xp,xtmp,INSERT_VALUES,SCATTER_FORWARD);
938: VecScatterEnd(scatter,xp,xtmp,INSERT_VALUES,SCATTER_FORWARD);
940: /* copy vector entires into xred */
941: VecGetArrayRead(xtmp,&x_array);
942: if (xred) {
943: PetscScalar *LA_xred;
944: VecGetOwnershipRange(xred,&st,&ed);
946: VecGetArray(xred,&LA_xred);
947: for (i=0; i<ed-st; i++) {
948: LA_xred[i] = x_array[i];
949: }
950: VecRestoreArray(xred,&LA_xred);
951: }
952: VecRestoreArrayRead(xtmp,&x_array);
954: /* solve */
955: if (isActiveRank(sred->psubcomm)) {
956: KSPSolve(sred->ksp,xred,yred);
957: }
959: /* return vector */
960: VecGetArray(xtmp,&array);
961: if (yred) {
962: const PetscScalar *LA_yred;
963: VecGetOwnershipRange(yred,&st,&ed);
964: VecGetArrayRead(yred,&LA_yred);
965: for (i=0; i<ed-st; i++) {
966: array[i] = LA_yred[i];
967: }
968: VecRestoreArrayRead(yred,&LA_yred);
969: }
970: VecRestoreArray(xtmp,&array);
971: VecScatterBegin(scatter,xtmp,xp,INSERT_VALUES,SCATTER_REVERSE);
972: VecScatterEnd(scatter,xtmp,xp,INSERT_VALUES,SCATTER_REVERSE);
973: MatMult(perm,xp,y);
974: return(0);
975: }
977: PetscErrorCode PCApplyRichardson_Telescope_dmda(PC pc,Vec x,Vec y,Vec w,PetscReal rtol,PetscReal abstol, PetscReal dtol,PetscInt its,PetscBool zeroguess,PetscInt *outits,PCRichardsonConvergedReason *reason)
978: {
979: PC_Telescope sred = (PC_Telescope)pc->data;
980: PetscErrorCode ierr;
981: Mat perm;
982: Vec xtmp,xp,yred;
983: PetscInt i,st,ed;
984: VecScatter scatter;
985: const PetscScalar *x_array;
986: PetscBool default_init_guess_value = PETSC_FALSE;
987: PC_Telescope_DMDACtx *ctx;
989: ctx = (PC_Telescope_DMDACtx*)sred->dm_ctx;
990: xtmp = sred->xtmp;
991: scatter = sred->scatter;
992: yred = sred->yred;
993: perm = ctx->permutation;
994: xp = ctx->xp;
996: if (its > 1) SETERRQ(PetscObjectComm((PetscObject)pc),PETSC_ERR_SUP,"PCApplyRichardson_Telescope_dmda only supports max_it = 1");
997: *reason = (PCRichardsonConvergedReason)0;
999: if (!zeroguess) {
1000: PetscInfo(pc,"PCTelescopeDMDA: Scattering y for non-zero-initial guess\n");
1001: /* permute vector into ordering associated with re-partitioned dmda */
1002: MatMultTranspose(perm,y,xp);
1004: /* pull in vector x->xtmp */
1005: VecScatterBegin(scatter,xp,xtmp,INSERT_VALUES,SCATTER_FORWARD);
1006: VecScatterEnd(scatter,xp,xtmp,INSERT_VALUES,SCATTER_FORWARD);
1008: /* copy vector entires into xred */
1009: VecGetArrayRead(xtmp,&x_array);
1010: if (yred) {
1011: PetscScalar *LA_yred;
1012: VecGetOwnershipRange(yred,&st,&ed);
1013: VecGetArray(yred,&LA_yred);
1014: for (i=0; i<ed-st; i++) {
1015: LA_yred[i] = x_array[i];
1016: }
1017: VecRestoreArray(yred,&LA_yred);
1018: }
1019: VecRestoreArrayRead(xtmp,&x_array);
1020: }
1022: if (isActiveRank(sred->psubcomm)) {
1023: KSPGetInitialGuessNonzero(sred->ksp,&default_init_guess_value);
1024: if (!zeroguess) KSPSetInitialGuessNonzero(sred->ksp,PETSC_TRUE);
1025: }
1027: PCApply_Telescope_dmda(pc,x,y);
1029: if (isActiveRank(sred->psubcomm)) {
1030: KSPSetInitialGuessNonzero(sred->ksp,default_init_guess_value);
1031: }
1033: if (!*reason) *reason = PCRICHARDSON_CONVERGED_ITS;
1034: *outits = 1;
1035: return(0);
1036: }
1038: PetscErrorCode PCReset_Telescope_dmda(PC pc)
1039: {
1040: PetscErrorCode ierr;
1041: PC_Telescope sred = (PC_Telescope)pc->data;
1042: PC_Telescope_DMDACtx *ctx;
1045: ctx = (PC_Telescope_DMDACtx*)sred->dm_ctx;
1046: VecDestroy(&ctx->xp);
1047: MatDestroy(&ctx->permutation);
1048: DMDestroy(&ctx->dmrepart);
1049: PetscFree(ctx->range_i_re);
1050: PetscFree(ctx->range_j_re);
1051: PetscFree(ctx->range_k_re);
1052: PetscFree(ctx->start_i_re);
1053: PetscFree(ctx->start_j_re);
1054: PetscFree(ctx->start_k_re);
1055: return(0);
1056: }
1058: PetscErrorCode DMView_DA_Short_3d(DM dm,PetscViewer v)
1059: {
1060: PetscInt M,N,P,m,n,p,ndof,nsw;
1061: MPI_Comm comm;
1062: PetscMPIInt size;
1063: const char* prefix;
1067: PetscObjectGetComm((PetscObject)dm,&comm);
1068: MPI_Comm_size(comm,&size);
1069: DMGetOptionsPrefix(dm,&prefix);
1070: DMDAGetInfo(dm,NULL,&M,&N,&P,&m,&n,&p,&ndof,&nsw,NULL,NULL,NULL,NULL);
1071: if (prefix) {PetscViewerASCIIPrintf(v,"DMDA Object: (%s) %d MPI processes\n",prefix,size);}
1072: else {PetscViewerASCIIPrintf(v,"DMDA Object: %d MPI processes\n",size);}
1073: PetscViewerASCIIPrintf(v," M %D N %D P %D m %D n %D p %D dof %D overlap %D\n",M,N,P,m,n,p,ndof,nsw);
1074: return(0);
1075: }
1077: PetscErrorCode DMView_DA_Short_2d(DM dm,PetscViewer v)
1078: {
1079: PetscInt M,N,m,n,ndof,nsw;
1080: MPI_Comm comm;
1081: PetscMPIInt size;
1082: const char* prefix;
1086: PetscObjectGetComm((PetscObject)dm,&comm);
1087: MPI_Comm_size(comm,&size);
1088: DMGetOptionsPrefix(dm,&prefix);
1089: DMDAGetInfo(dm,NULL,&M,&N,NULL,&m,&n,NULL,&ndof,&nsw,NULL,NULL,NULL,NULL);
1090: if (prefix) {PetscViewerASCIIPrintf(v,"DMDA Object: (%s) %d MPI processes\n",prefix,size);}
1091: else {PetscViewerASCIIPrintf(v,"DMDA Object: %d MPI processes\n",size);}
1092: PetscViewerASCIIPrintf(v," M %D N %D m %D n %D dof %D overlap %D\n",M,N,m,n,ndof,nsw);
1093: return(0);
1094: }
1096: PetscErrorCode DMView_DA_Short(DM dm,PetscViewer v)
1097: {
1099: PetscInt dim;
1102: DMDAGetInfo(dm,&dim,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL);
1103: switch (dim) {
1104: case 2: DMView_DA_Short_2d(dm,v);
1105: break;
1106: case 3: DMView_DA_Short_3d(dm,v);
1107: break;
1108: }
1109: return(0);
1110: }