Actual source code: aobasic.c
1: #define PETSCDM_DLL
3: /*
4: The most basic AO application ordering routines. These store the
5: entire orderings on each processor.
6: */
8: #include src/dm/ao/aoimpl.h
9: #include petscsys.h
11: typedef struct {
12: PetscInt N;
13: PetscInt *app,*petsc; /* app[i] is the partner for the ith PETSc slot */
14: /* petsc[j] is the partner for the jth app slot */
15: } AO_Basic;
17: /*
18: All processors have the same data so processor 1 prints it
19: */
22: PetscErrorCode AOView_Basic(AO ao,PetscViewer viewer)
23: {
25: PetscMPIInt rank;
26: PetscInt i;
27: AO_Basic *aodebug = (AO_Basic*)ao->data;
28: PetscTruth iascii;
31: MPI_Comm_rank(ao->comm,&rank);
32: if (!rank){
33: PetscTypeCompare((PetscObject)viewer,PETSC_VIEWER_ASCII,&iascii);
34: if (iascii) {
35: PetscViewerASCIIPrintf(viewer,"Number of elements in ordering %D\n",aodebug->N);
36: PetscViewerASCIIPrintf(viewer, "PETSc->App App->PETSc\n");
37: for (i=0; i<aodebug->N; i++) {
38: PetscViewerASCIIPrintf(viewer,"%3D %3D %3D %3D\n",i,aodebug->app[i],i,aodebug->petsc[i]);
39: }
40: } else {
41: SETERRQ1(PETSC_ERR_SUP,"Viewer type %s not supported for AOData basic",((PetscObject)viewer)->type_name);
42: }
43: }
44: PetscViewerFlush(viewer);
45: return(0);
46: }
50: PetscErrorCode AODestroy_Basic(AO ao)
51: {
52: AO_Basic *aodebug = (AO_Basic*)ao->data;
56: PetscFree(aodebug->app);
57: PetscFree(ao->data);
58: return(0);
59: }
63: PetscErrorCode AOBasicGetIndices_Private(AO ao,PetscInt **app,PetscInt **petsc)
64: {
65: AO_Basic *basic = (AO_Basic*)ao->data;
68: if (app) *app = basic->app;
69: if (petsc) *petsc = basic->petsc;
70: return(0);
71: }
75: PetscErrorCode AOPetscToApplication_Basic(AO ao,PetscInt n,PetscInt *ia)
76: {
77: PetscInt i;
78: AO_Basic *aodebug = (AO_Basic*)ao->data;
81: for (i=0; i<n; i++) {
82: if (ia[i] >= 0) {ia[i] = aodebug->app[ia[i]];}
83: }
84: return(0);
85: }
89: PetscErrorCode AOApplicationToPetsc_Basic(AO ao,PetscInt n,PetscInt *ia)
90: {
91: PetscInt i;
92: AO_Basic *aodebug = (AO_Basic*)ao->data;
95: for (i=0; i<n; i++) {
96: if (ia[i] >= 0) {ia[i] = aodebug->petsc[ia[i]];}
97: }
98: return(0);
99: }
103: PetscErrorCode AOPetscToApplicationPermuteInt_Basic(AO ao, PetscInt block, PetscInt *array)
104: {
105: AO_Basic *aodebug = (AO_Basic *) ao->data;
106: PetscInt *temp;
107: PetscInt i, j;
111: PetscMalloc(aodebug->N*block * sizeof(PetscInt), &temp);
112: for(i = 0; i < aodebug->N; i++) {
113: for(j = 0; j < block; j++) temp[i*block+j] = array[aodebug->petsc[i]*block+j];
114: }
115: PetscMemcpy(array, temp, aodebug->N*block * sizeof(PetscInt));
116: PetscFree(temp);
117: return(0);
118: }
122: PetscErrorCode AOApplicationToPetscPermuteInt_Basic(AO ao, PetscInt block, PetscInt *array)
123: {
124: AO_Basic *aodebug = (AO_Basic *) ao->data;
125: PetscInt *temp;
126: PetscInt i, j;
130: PetscMalloc(aodebug->N*block * sizeof(PetscInt), &temp);
131: for(i = 0; i < aodebug->N; i++) {
132: for(j = 0; j < block; j++) temp[i*block+j] = array[aodebug->app[i]*block+j];
133: }
134: PetscMemcpy(array, temp, aodebug->N*block * sizeof(PetscInt));
135: PetscFree(temp);
136: return(0);
137: }
141: PetscErrorCode AOPetscToApplicationPermuteReal_Basic(AO ao, PetscInt block, PetscReal *array)
142: {
143: AO_Basic *aodebug = (AO_Basic *) ao->data;
144: PetscReal *temp;
145: PetscInt i, j;
149: PetscMalloc(aodebug->N*block * sizeof(PetscReal), &temp);
150: for(i = 0; i < aodebug->N; i++) {
151: for(j = 0; j < block; j++) temp[i*block+j] = array[aodebug->petsc[i]*block+j];
152: }
153: PetscMemcpy(array, temp, aodebug->N*block * sizeof(PetscReal));
154: PetscFree(temp);
155: return(0);
156: }
160: PetscErrorCode AOApplicationToPetscPermuteReal_Basic(AO ao, PetscInt block, PetscReal *array)
161: {
162: AO_Basic *aodebug = (AO_Basic *) ao->data;
163: PetscReal *temp;
164: PetscInt i, j;
168: PetscMalloc(aodebug->N*block * sizeof(PetscReal), &temp);
169: for(i = 0; i < aodebug->N; i++) {
170: for(j = 0; j < block; j++) temp[i*block+j] = array[aodebug->app[i]*block+j];
171: }
172: PetscMemcpy(array, temp, aodebug->N*block * sizeof(PetscReal));
173: PetscFree(temp);
174: return(0);
175: }
177: static struct _AOOps AOops = {AOView_Basic,
178: AODestroy_Basic,
179: AOPetscToApplication_Basic,
180: AOApplicationToPetsc_Basic,
181: AOPetscToApplicationPermuteInt_Basic,
182: AOApplicationToPetscPermuteInt_Basic,
183: AOPetscToApplicationPermuteReal_Basic,
184: AOApplicationToPetscPermuteReal_Basic};
188: /*@C
189: AOCreateBasic - Creates a basic application ordering using two integer arrays.
191: Collective on MPI_Comm
193: Input Parameters:
194: + comm - MPI communicator that is to share AO
195: . napp - size of integer arrays
196: . myapp - integer array that defines an ordering
197: - mypetsc - integer array that defines another ordering (may be PETSC_NULL to
198: indicate the natural ordering)
200: Output Parameter:
201: . aoout - the new application ordering
203: Options Database Key:
204: . -ao_view - call AOView() at the conclusion of AOCreateBasic()
206: Level: beginner
208: .keywords: AO, create
210: .seealso: AOCreateBasicIS(), AODestroy()
211: @*/
212: PetscErrorCode AOCreateBasic(MPI_Comm comm,PetscInt napp,const PetscInt myapp[],const PetscInt mypetsc[],AO *aoout)
213: {
214: AO_Basic *aobasic;
215: AO ao;
216: PetscMPIInt *lens,size,rank,nnapp,*disp;
217: PetscInt *allpetsc,*allapp,ip,ia,N,i,*petsc,start;
218: PetscTruth opt;
223: *aoout = 0;
224: #ifndef PETSC_USE_DYNAMIC_LIBRARIES
225: DMInitializePackage(PETSC_NULL);
226: #endif
228: PetscHeaderCreate(ao, _p_AO, struct _AOOps, AO_COOKIE, AO_BASIC, "AO", comm, AODestroy, AOView);
229: PetscNew(AO_Basic, &aobasic);
230: PetscLogObjectMemory(ao, sizeof(struct _p_AO) + sizeof(AO_Basic));
232: PetscMemcpy(ao->ops, &AOops, sizeof(AOops));
233: ao->data = (void*) aobasic;
235: /* transmit all lengths to all processors */
236: MPI_Comm_size(comm, &size);
237: MPI_Comm_rank(comm, &rank);
238: PetscMalloc(2*size * sizeof(PetscMPIInt), &lens);
239: disp = lens + size;
240: nnapp = napp;
241: MPI_Allgather(&nnapp, 1, MPI_INT, lens, 1, MPI_INT, comm);
242: N = 0;
243: for(i = 0; i < size; i++) {
244: disp[i] = N;
245: N += lens[i];
246: }
247: aobasic->N = N;
249: /*
250: If mypetsc is 0 then use "natural" numbering
251: */
252: if (napp && !mypetsc) {
253: start = disp[rank];
254: PetscMalloc((napp+1) * sizeof(PetscInt), &petsc);
255: for (i=0; i<napp; i++) {
256: petsc[i] = start + i;
257: }
258: } else {
259: petsc = (PetscInt*)mypetsc;
260: }
262: /* get all indices on all processors */
263: PetscMalloc(2*N * sizeof(PetscInt), &allpetsc);
264: allapp = allpetsc + N;
265: MPI_Allgatherv(petsc, napp, MPIU_INT, allpetsc, lens, disp, MPIU_INT, comm);
266: MPI_Allgatherv((void*)myapp, napp, MPIU_INT, allapp, lens, disp, MPIU_INT, comm);
267: PetscFree(lens);
269: #if defined(PETSC_USE_DEBUG)
270: {
271: PetscInt *sorted;
272: PetscMalloc((N+1)*sizeof(PetscInt),&sorted);
274: PetscMemcpy(sorted,allapp,N*sizeof(PetscInt));
275: PetscSortInt(N,sorted);
276: for (i=0; i<N; i++) {
277: if (sorted[i] != i) SETERRQ2(PETSC_ERR_ARG_WRONG,"PETSc ordering requires a permutation of numbers 0 to N-1\n it is missing %D has %D",i,sorted[i]);
278: }
280: PetscMemcpy(sorted,allapp,N*sizeof(PetscInt));
281: PetscSortInt(N,sorted);
282: for (i=0; i<N; i++) {
283: if (sorted[i] != i) SETERRQ2(PETSC_ERR_ARG_WRONG,"Application ordering requires a permutation of numbers 0 to N-1\n it is missing %D has %D",i,sorted[i]);
284: }
286: PetscFree(sorted);
287: }
288: #endif
290: /* generate a list of application and PETSc node numbers */
291: PetscMalloc(2*N * sizeof(PetscInt), &aobasic->app);
292: PetscLogObjectMemory(ao,2*N*sizeof(PetscInt));
293: aobasic->petsc = aobasic->app + N;
294: PetscMemzero(aobasic->app, 2*N*sizeof(PetscInt));
295: for(i = 0; i < N; i++) {
296: ip = allpetsc[i];
297: ia = allapp[i];
298: /* check there are no duplicates */
299: if (aobasic->app[ip]) SETERRQ3(PETSC_ERR_ARG_OUTOFRANGE,"Duplicate in PETSc ordering at position %d. Already mapped to %d, not %d.", i, aobasic->app[ip]-1, ia);
300: aobasic->app[ip] = ia + 1;
301: if (aobasic->petsc[ia]) SETERRQ3(PETSC_ERR_ARG_OUTOFRANGE,"Duplicate in Application ordering at position %d. Already mapped to %d, not %d.", i, aobasic->petsc[ia]-1, ip);
302: aobasic->petsc[ia] = ip + 1;
303: }
304: if (!mypetsc) {
305: PetscFree(petsc);
306: }
307: PetscFree(allpetsc);
308: /* shift indices down by one */
309: for(i = 0; i < N; i++) {
310: aobasic->app[i]--;
311: aobasic->petsc[i]--;
312: }
314: PetscOptionsHasName(PETSC_NULL, "-ao_view", &opt);
315: if (opt) {
316: AOView(ao, PETSC_VIEWER_STDOUT_SELF);
317: }
319: *aoout = ao;
320: return(0);
321: }
325: /*@C
326: AOCreateBasicIS - Creates a basic application ordering using two index sets.
328: Collective on IS
330: Input Parameters:
331: + isapp - index set that defines an ordering
332: - ispetsc - index set that defines another ordering (may be PETSC_NULL to use the
333: natural ordering)
335: Output Parameter:
336: . aoout - the new application ordering
338: Options Database Key:
339: - -ao_view - call AOView() at the conclusion of AOCreateBasicIS()
341: Level: beginner
343: .keywords: AO, create
345: .seealso: AOCreateBasic(), AODestroy()
346: @*/
347: PetscErrorCode AOCreateBasicIS(IS isapp,IS ispetsc,AO *aoout)
348: {
350: PetscInt *mypetsc = 0,*myapp,napp,npetsc;
351: MPI_Comm comm;
354: PetscObjectGetComm((PetscObject)isapp,&comm);
355: ISGetLocalSize(isapp,&napp);
356: if (ispetsc) {
357: ISGetLocalSize(ispetsc,&npetsc);
358: if (napp != npetsc) SETERRQ(PETSC_ERR_ARG_SIZ,"Local IS lengths must match");
359: ISGetIndices(ispetsc,&mypetsc);
360: }
361: ISGetIndices(isapp,&myapp);
363: AOCreateBasic(comm,napp,myapp,mypetsc,aoout);
365: ISRestoreIndices(isapp,&myapp);
366: if (ispetsc) {
367: ISRestoreIndices(ispetsc,&mypetsc);
368: }
369: return(0);
370: }