xref: /petsc/src/mat/impls/hypre/mhypre.c (revision 9b2437101ac1db3c201d7be9c485cbee0b1dde4b)
1 
2 /*
3     Creates hypre ijmatrix from PETSc matrix
4 */
5 
6 /*MC
7    MATHYPRE - MATHYPRE = "hypre" - A matrix type to be used for sequential and parallel sparse matrices
8           based on the hypre IJ interface.
9 
10    Level: intermediate
11 
12 .seealso: MatCreate()
13 M*/
14 
15 #include <petscmathypre.h>
16 #include <petsc/private/matimpl.h>
17 #include <../src/mat/impls/hypre/mhypre.h>
18 #include <../src/mat/impls/aij/mpi/mpiaij.h>
19 #include <../src/vec/vec/impls/hypre/vhyp.h>
20 #include <HYPRE.h>
21 #include <HYPRE_utilities.h>
22 #include <_hypre_parcsr_ls.h>
23 
24 static PetscErrorCode MatHYPRE_CreateFromMat(Mat,Mat_HYPRE*);
25 static PetscErrorCode MatHYPRE_IJMatrixPreallocate(Mat,Mat,HYPRE_IJMatrix);
26 static PetscErrorCode MatHYPRE_IJMatrixFastCopy_MPIAIJ(Mat,HYPRE_IJMatrix);
27 static PetscErrorCode MatHYPRE_IJMatrixFastCopy_SeqAIJ(Mat,HYPRE_IJMatrix);
28 static PetscErrorCode MatHYPRE_MultKernel_Private(Mat,Vec,Vec,PetscBool);
29 static PetscErrorCode hypre_array_destroy(void*);
30 
31 #undef __FUNCT__
32 #define __FUNCT__ "MatHYPRE_IJMatrixPreallocate"
33 static PetscErrorCode MatHYPRE_IJMatrixPreallocate(Mat A_d, Mat A_o, HYPRE_IJMatrix ij)
34 {
35   PetscErrorCode ierr;
36   PetscInt       i,n_d,n_o;
37   const PetscInt *ia_d,*ia_o;
38   PetscBool      done_d=PETSC_FALSE,done_o=PETSC_FALSE;
39   PetscInt       *nnz_d=NULL,*nnz_o=NULL;
40 
41   PetscFunctionBegin;
42   if (A_d) { /* determine number of nonzero entries in local diagonal part */
43     ierr = MatGetRowIJ(A_d,0,PETSC_FALSE,PETSC_FALSE,&n_d,&ia_d,NULL,&done_d);CHKERRQ(ierr);
44     if (done_d) {
45       ierr = PetscMalloc1(n_d,&nnz_d);CHKERRQ(ierr);
46       for (i=0; i<n_d; i++) {
47         nnz_d[i] = ia_d[i+1] - ia_d[i];
48       }
49     }
50     ierr = MatRestoreRowIJ(A_d,0,PETSC_FALSE,PETSC_FALSE,NULL,&ia_d,NULL,&done_d);CHKERRQ(ierr);
51   }
52   if (A_o) { /* determine number of nonzero entries in local off-diagonal part */
53     ierr = MatGetRowIJ(A_o,0,PETSC_FALSE,PETSC_FALSE,&n_o,&ia_o,NULL,&done_o);CHKERRQ(ierr);
54     if (done_o) {
55       ierr = PetscMalloc1(n_o,&nnz_o);CHKERRQ(ierr);
56       for (i=0; i<n_o; i++) {
57         nnz_o[i] = ia_o[i+1] - ia_o[i];
58       }
59     }
60     ierr = MatRestoreRowIJ(A_o,0,PETSC_FALSE,PETSC_FALSE,&n_o,&ia_o,NULL,&done_o);CHKERRQ(ierr);
61   }
62   if (done_d) {    /* set number of nonzeros in HYPRE IJ matrix */
63     if (!done_o) { /* only diagonal part */
64       ierr = PetscMalloc1(n_d,&nnz_o);CHKERRQ(ierr);
65       for (i=0; i<n_d; i++) {
66         nnz_o[i] = 0;
67       }
68     }
69     PetscStackCallStandard(HYPRE_IJMatrixSetDiagOffdSizes,(ij,(HYPRE_Int *)nnz_d,(HYPRE_Int *)nnz_o));
70     ierr = PetscFree(nnz_d);CHKERRQ(ierr);
71     ierr = PetscFree(nnz_o);CHKERRQ(ierr);
72   }
73   PetscFunctionReturn(0);
74 }
75 
76 #undef __FUNCT__
77 #define __FUNCT__ "MatHYPRE_CreateFromMat"
78 static PetscErrorCode MatHYPRE_CreateFromMat(Mat A, Mat_HYPRE *hA)
79 {
80   PetscErrorCode ierr;
81   PetscInt       rstart,rend,cstart,cend;
82 
83   PetscFunctionBegin;
84   ierr   = PetscLayoutSetUp(A->rmap);CHKERRQ(ierr);
85   ierr   = PetscLayoutSetUp(A->cmap);CHKERRQ(ierr);
86   rstart = A->rmap->rstart;
87   rend   = A->rmap->rend;
88   cstart = A->cmap->rstart;
89   cend   = A->cmap->rend;
90   PetscStackCallStandard(HYPRE_IJMatrixCreate,(hA->comm,rstart,rend-1,cstart,cend-1,&hA->ij));
91   PetscStackCallStandard(HYPRE_IJMatrixSetObjectType,(hA->ij,HYPRE_PARCSR));
92   {
93     PetscBool      same;
94     Mat            A_d,A_o;
95     const PetscInt *colmap;
96     ierr = PetscObjectTypeCompare((PetscObject)A,MATMPIAIJ,&same);CHKERRQ(ierr);
97     if (same) {
98       ierr = MatMPIAIJGetSeqAIJ(A,&A_d,&A_o,&colmap);CHKERRQ(ierr);
99       ierr = MatHYPRE_IJMatrixPreallocate(A_d,A_o,hA->ij);CHKERRQ(ierr);
100       PetscFunctionReturn(0);
101     }
102     ierr = PetscObjectTypeCompare((PetscObject)A,MATMPIBAIJ,&same);CHKERRQ(ierr);
103     if (same) {
104       ierr = MatMPIBAIJGetSeqBAIJ(A,&A_d,&A_o,&colmap);CHKERRQ(ierr);
105       ierr = MatHYPRE_IJMatrixPreallocate(A_d,A_o,hA->ij);CHKERRQ(ierr);
106       PetscFunctionReturn(0);
107     }
108     ierr = PetscObjectTypeCompare((PetscObject)A,MATSEQAIJ,&same);CHKERRQ(ierr);
109     if (same) {
110       ierr = MatHYPRE_IJMatrixPreallocate(A,NULL,hA->ij);CHKERRQ(ierr);
111       PetscFunctionReturn(0);
112     }
113     ierr = PetscObjectTypeCompare((PetscObject)A,MATSEQBAIJ,&same);CHKERRQ(ierr);
114     if (same) {
115       ierr = MatHYPRE_IJMatrixPreallocate(A,NULL,hA->ij);CHKERRQ(ierr);
116       PetscFunctionReturn(0);
117     }
118   }
119   PetscFunctionReturn(0);
120 }
121 
122 #undef __FUNCT__
123 #define __FUNCT__ "MatHYPRE_IJMatrixCopy"
124 static PetscErrorCode MatHYPRE_IJMatrixCopy(Mat A, HYPRE_IJMatrix ij)
125 {
126   PetscErrorCode    ierr;
127   PetscInt          i,rstart,rend,ncols,nr,nc;
128   const PetscScalar *values;
129   const PetscInt    *cols;
130   PetscBool         flg;
131 
132   PetscFunctionBegin;
133   ierr = PetscObjectTypeCompare((PetscObject)A,MATMPIAIJ,&flg);CHKERRQ(ierr);
134   ierr = MatGetSize(A,&nr,&nc);CHKERRQ(ierr);
135   if (flg && nr == nc) {
136     ierr = MatHYPRE_IJMatrixFastCopy_MPIAIJ(A,ij);CHKERRQ(ierr);
137     PetscFunctionReturn(0);
138   }
139   ierr = PetscObjectTypeCompare((PetscObject)A,MATSEQAIJ,&flg);CHKERRQ(ierr);
140   if (flg) {
141     ierr = MatHYPRE_IJMatrixFastCopy_SeqAIJ(A,ij);CHKERRQ(ierr);
142     PetscFunctionReturn(0);
143   }
144 
145   PetscStackCallStandard(HYPRE_IJMatrixInitialize,(ij));
146   ierr = MatGetOwnershipRange(A,&rstart,&rend);CHKERRQ(ierr);
147   for (i=rstart; i<rend; i++) {
148     ierr = MatGetRow(A,i,&ncols,&cols,&values);CHKERRQ(ierr);
149     PetscStackCallStandard(HYPRE_IJMatrixSetValues,(ij,1,(HYPRE_Int *)&ncols,(HYPRE_Int *)&i,(HYPRE_Int *)cols,values));
150     ierr = MatRestoreRow(A,i,&ncols,&cols,&values);CHKERRQ(ierr);
151   }
152   PetscFunctionReturn(0);
153 }
154 
155 #undef __FUNCT__
156 #define __FUNCT__ "MatHYPRE_IJMatrixFastCopy_SeqAIJ"
157 static PetscErrorCode MatHYPRE_IJMatrixFastCopy_SeqAIJ(Mat A, HYPRE_IJMatrix ij)
158 {
159   PetscErrorCode        ierr;
160   Mat_SeqAIJ            *pdiag = (Mat_SeqAIJ*)A->data;
161   HYPRE_Int             type;
162   hypre_ParCSRMatrix    *par_matrix;
163   hypre_AuxParCSRMatrix *aux_matrix;
164   hypre_CSRMatrix       *hdiag;
165 
166   PetscFunctionBegin;
167   PetscStackCallStandard(HYPRE_IJMatrixInitialize,(ij));
168   PetscStackCallStandard(HYPRE_IJMatrixGetObjectType,(ij,&type));
169   if (type != HYPRE_PARCSR) SETERRQ(PetscObjectComm((PetscObject)A),PETSC_ERR_SUP,"Only HYPRE_PARCSR is supported");
170   PetscStackCallStandard(HYPRE_IJMatrixGetObject,(ij,(void**)&par_matrix));
171   hdiag = hypre_ParCSRMatrixDiag(par_matrix);
172   /*
173        this is the Hack part where we monkey directly with the hypre datastructures
174   */
175   ierr = PetscMemcpy(hdiag->i,pdiag->i,(A->rmap->n + 1)*sizeof(PetscInt));
176   ierr = PetscMemcpy(hdiag->j,pdiag->j,pdiag->nz*sizeof(PetscInt));
177   ierr = PetscMemcpy(hdiag->data,pdiag->a,pdiag->nz*sizeof(PetscScalar));
178 
179   aux_matrix = (hypre_AuxParCSRMatrix*)hypre_IJMatrixTranslator(ij);
180   hypre_AuxParCSRMatrixNeedAux(aux_matrix) = 0;
181   PetscFunctionReturn(0);
182 }
183 
184 #undef __FUNCT__
185 #define __FUNCT__ "MatHYPRE_IJMatrixFastCopy_MPIAIJ"
186 static PetscErrorCode MatHYPRE_IJMatrixFastCopy_MPIAIJ(Mat A, HYPRE_IJMatrix ij)
187 {
188   PetscErrorCode        ierr;
189   Mat_MPIAIJ            *pA = (Mat_MPIAIJ*)A->data;
190   Mat_SeqAIJ            *pdiag,*poffd;
191   PetscInt              i,*garray = pA->garray,*jj,cstart,*pjj;
192   HYPRE_Int             type;
193   hypre_ParCSRMatrix    *par_matrix;
194   hypre_AuxParCSRMatrix *aux_matrix;
195   hypre_CSRMatrix       *hdiag,*hoffd;
196 
197   PetscFunctionBegin;
198   pdiag = (Mat_SeqAIJ*) pA->A->data;
199   poffd = (Mat_SeqAIJ*) pA->B->data;
200   /* cstart is only valid for square MPIAIJ layed out in the usual way */
201   ierr = MatGetOwnershipRange(A,&cstart,NULL);CHKERRQ(ierr);
202 
203   PetscStackCallStandard(HYPRE_IJMatrixInitialize,(ij));
204   PetscStackCallStandard(HYPRE_IJMatrixGetObjectType,(ij,&type));
205   if (type != HYPRE_PARCSR) SETERRQ(PetscObjectComm((PetscObject)A),PETSC_ERR_SUP,"Only HYPRE_PARCSR is supported");
206   PetscStackCallStandard(HYPRE_IJMatrixGetObject,(ij,(void**)&par_matrix));
207   hdiag = hypre_ParCSRMatrixDiag(par_matrix);
208   hoffd = hypre_ParCSRMatrixOffd(par_matrix);
209 
210   /*
211        this is the Hack part where we monkey directly with the hypre datastructures
212   */
213   ierr = PetscMemcpy(hdiag->i,pdiag->i,(pA->A->rmap->n + 1)*sizeof(PetscInt));
214   /* need to shift the diag column indices (hdiag->j) back to global numbering since hypre is expecting this */
215   jj  = (PetscInt*)hdiag->j;
216   pjj = (PetscInt*)pdiag->j;
217   for (i=0; i<pdiag->nz; i++) jj[i] = cstart + pjj[i];
218   ierr = PetscMemcpy(hdiag->data,pdiag->a,pdiag->nz*sizeof(PetscScalar));
219   ierr = PetscMemcpy(hoffd->i,poffd->i,(pA->A->rmap->n + 1)*sizeof(PetscInt));
220   /* need to move the offd column indices (hoffd->j) back to global numbering since hypre is expecting this
221      If we hacked a hypre a bit more we might be able to avoid this step */
222   jj  = (PetscInt*) hoffd->j;
223   pjj = (PetscInt*) poffd->j;
224   for (i=0; i<poffd->nz; i++) jj[i] = garray[pjj[i]];
225   ierr = PetscMemcpy(hoffd->data,poffd->a,poffd->nz*sizeof(PetscScalar));
226 
227   aux_matrix = (hypre_AuxParCSRMatrix*)hypre_IJMatrixTranslator(ij);
228   hypre_AuxParCSRMatrixNeedAux(aux_matrix) = 0;
229   PetscFunctionReturn(0);
230 }
231 
232 #undef __FUNCT__
233 #define __FUNCT__ "MatConvert_HYPRE_IS"
234 static PetscErrorCode MatConvert_HYPRE_IS(Mat A, MatType mtype, MatReuse reuse, Mat* B)
235 {
236   Mat_HYPRE*             mhA = (Mat_HYPRE*)(A->data);
237   Mat                    lA;
238   ISLocalToGlobalMapping rl2g,cl2g;
239   IS                     is;
240   hypre_ParCSRMatrix     *hA;
241   hypre_CSRMatrix        *hdiag,*hoffd;
242   MPI_Comm               comm;
243   PetscScalar            *hdd,*hod,*aa,*data;
244   HYPRE_Int              *col_map_offd,*hdi,*hdj,*hoi,*hoj;
245   PetscInt               *ii,*jj,*iptr,*jptr;
246   PetscInt               cum,dr,dc,oc,str,stc,nnz,i,jd,jo,M,N;
247   HYPRE_Int              type;
248   PetscErrorCode         ierr;
249 
250   PetscFunctionBegin;
251   comm = PetscObjectComm((PetscObject)A);
252   PetscStackCallStandard(HYPRE_IJMatrixGetObjectType,(mhA->ij,&type));
253   if (type != HYPRE_PARCSR) SETERRQ(comm,PETSC_ERR_SUP,"Only HYPRE_PARCSR is supported");
254   PetscStackCallStandard(HYPRE_IJMatrixGetObject,(mhA->ij,(void**)&hA));
255   M     = hypre_ParCSRMatrixGlobalNumRows(hA);
256   N     = hypre_ParCSRMatrixGlobalNumCols(hA);
257   str   = hypre_ParCSRMatrixFirstRowIndex(hA);
258   stc   = hypre_ParCSRMatrixFirstColDiag(hA);
259   hdiag = hypre_ParCSRMatrixDiag(hA);
260   hoffd = hypre_ParCSRMatrixOffd(hA);
261   dr    = hypre_CSRMatrixNumRows(hdiag);
262   dc    = hypre_CSRMatrixNumCols(hdiag);
263   nnz   = hypre_CSRMatrixNumNonzeros(hdiag);
264   hdi   = hypre_CSRMatrixI(hdiag);
265   hdj   = hypre_CSRMatrixJ(hdiag);
266   hdd   = hypre_CSRMatrixData(hdiag);
267   oc    = hypre_CSRMatrixNumCols(hoffd);
268   nnz  += hypre_CSRMatrixNumNonzeros(hoffd);
269   hoi   = hypre_CSRMatrixI(hoffd);
270   hoj   = hypre_CSRMatrixJ(hoffd);
271   hod   = hypre_CSRMatrixData(hoffd);
272   if (reuse != MAT_REUSE_MATRIX) {
273     PetscInt *aux;
274 
275     /* generate l2g maps for rows and cols */
276     ierr = ISCreateStride(comm,dr,str,1,&is);CHKERRQ(ierr);
277     ierr = ISLocalToGlobalMappingCreateIS(is,&rl2g);CHKERRQ(ierr);
278     ierr = ISDestroy(&is);CHKERRQ(ierr);
279     col_map_offd = hypre_ParCSRMatrixColMapOffd(hA);
280     ierr = PetscMalloc1(dc+oc,&aux);CHKERRQ(ierr);
281     for (i=0; i<dc; i++) aux[i] = i+stc;
282     for (i=0; i<oc; i++) aux[i+dc] = col_map_offd[i];
283     ierr = ISCreateGeneral(comm,dc+oc,aux,PETSC_OWN_POINTER,&is);CHKERRQ(ierr);
284     ierr = ISLocalToGlobalMappingCreateIS(is,&cl2g);CHKERRQ(ierr);
285     ierr = ISDestroy(&is);CHKERRQ(ierr);
286     /* create MATIS object */
287     ierr = MatCreate(comm,B);CHKERRQ(ierr);
288     ierr = MatSetSizes(*B,dr,dc,M,N);CHKERRQ(ierr);
289     ierr = MatSetType(*B,MATIS);CHKERRQ(ierr);
290     ierr = MatSetLocalToGlobalMapping(*B,rl2g,cl2g);CHKERRQ(ierr);
291     ierr = ISLocalToGlobalMappingDestroy(&rl2g);CHKERRQ(ierr);
292     ierr = ISLocalToGlobalMappingDestroy(&cl2g);CHKERRQ(ierr);
293 
294     /* allocate CSR for local matrix */
295     ierr = PetscMalloc1(dr+1,&iptr);CHKERRQ(ierr);
296     ierr = PetscMalloc1(nnz,&jptr);CHKERRQ(ierr);
297     ierr = PetscMalloc1(nnz,&data);CHKERRQ(ierr);
298   } else {
299     PetscInt  nr;
300     PetscBool done;
301     ierr = MatISGetLocalMat(*B,&lA);CHKERRQ(ierr);
302     ierr = MatGetRowIJ(lA,0,PETSC_FALSE,PETSC_FALSE,&nr,(const PetscInt**)&iptr,(const PetscInt**)&jptr,&done);CHKERRQ(ierr);
303     if (nr != dr) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_USER,"Cannot reuse mat: invalid number of rows in local mat! %D != %D",nr,dr);
304     if (iptr[nr] < nnz) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_USER,"Cannot reuse mat: invalid number of nonzeros in local mat! reuse %D requested %D",iptr[nr],nnz);
305     ierr = MatSeqAIJGetArray(lA,&data);CHKERRQ(ierr);
306   }
307   /* merge local matrices */
308   ii   = iptr;
309   jj   = jptr;
310   aa   = data;
311   *ii  = *(hdi++) + *(hoi++);
312   for (jd=0,jo=0,cum=0; *ii<nnz; cum++) {
313     PetscScalar *aold = aa;
314     PetscInt    *jold = jj,nc = jd+jo;
315     for (; jd<*hdi; jd++) { *jj++ = *hdj++;      *aa++ = *hdd++; }
316     for (; jo<*hoi; jo++) { *jj++ = *hoj++ + dc; *aa++ = *hod++; }
317     *(++ii) = *(hdi++) + *(hoi++);
318     ierr = PetscSortIntWithScalarArray(jd+jo-nc,jold,aold);CHKERRQ(ierr);
319   }
320   for (; cum<dr; cum++) *(++ii) = nnz;
321   if (reuse != MAT_REUSE_MATRIX) {
322     Mat_SeqAIJ* a;
323 
324     ierr = MatCreateSeqAIJWithArrays(PETSC_COMM_SELF,dr,dc+oc,iptr,jptr,data,&lA);CHKERRQ(ierr);
325     ierr = MatISSetLocalMat(*B,lA);CHKERRQ(ierr);
326     /* hack SeqAIJ */
327     a          = (Mat_SeqAIJ*)(lA->data);
328     a->free_a  = PETSC_TRUE;
329     a->free_ij = PETSC_TRUE;
330     ierr = MatDestroy(&lA);CHKERRQ(ierr);
331   }
332   ierr = MatAssemblyBegin(*B,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr);
333   ierr = MatAssemblyEnd(*B,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr);
334   if (reuse == MAT_INPLACE_MATRIX) {
335     ierr = MatHeaderReplace(A,B);CHKERRQ(ierr);
336   }
337   PetscFunctionReturn(0);
338 }
339 
340 #undef __FUNCT__
341 #define __FUNCT__ "MatConvert_AIJ_HYPRE"
342 PETSC_INTERN PetscErrorCode MatConvert_AIJ_HYPRE(Mat A, MatType type, MatReuse reuse, Mat *B)
343 {
344   Mat_HYPRE      *hB;
345   MPI_Comm       comm = PetscObjectComm((PetscObject)A);
346   PetscErrorCode ierr;
347 
348   PetscFunctionBegin;
349   if (reuse == MAT_INPLACE_MATRIX) SETERRQ(comm,PETSC_ERR_SUP,"Unsupported MAT_INPLACE_MATRIX");
350   if (reuse == MAT_REUSE_MATRIX) {
351     /* always destroy the old matrix and create a new memory;
352        hope this does not churn the memory too much. The problem
353        is I do not know if it is possible to put the matrix back to
354        its initial state so that we can directly copy the values
355        the second time through. */
356     hB = (Mat_HYPRE*)((*B)->data);
357     PetscStackCallStandard(HYPRE_IJMatrixDestroy,(hB->ij));
358   } else {
359     ierr = MatCreate(comm,B);CHKERRQ(ierr);
360     ierr = MatSetType(*B,MATHYPRE);CHKERRQ(ierr);
361     ierr = MatSetSizes(*B,A->rmap->n,A->cmap->n,A->rmap->N,A->cmap->N);CHKERRQ(ierr);
362     hB   = (Mat_HYPRE*)((*B)->data);
363   }
364   ierr = MatHYPRE_CreateFromMat(A,hB);CHKERRQ(ierr);
365   ierr = MatHYPRE_IJMatrixCopy(A,hB->ij);CHKERRQ(ierr);
366   (*B)->preallocated = PETSC_TRUE;
367   ierr = MatAssemblyBegin(*B,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr);
368   ierr = MatAssemblyEnd(*B,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr);
369   PetscFunctionReturn(0);
370 }
371 
372 #undef __FUNCT__
373 #define __FUNCT__ "MatConvert_HYPRE_AIJ"
374 static PetscErrorCode MatConvert_HYPRE_AIJ(Mat A, MatType mtype, MatReuse reuse, Mat *B)
375 {
376   Mat_HYPRE          *hA = (Mat_HYPRE*)A->data;
377   hypre_ParCSRMatrix *parcsr;
378   hypre_CSRMatrix    *hdiag,*hoffd;
379   MPI_Comm           comm;
380   PetscScalar        *da,*oa,*aptr;
381   PetscInt           *dii,*djj,*oii,*ojj,*iptr;
382   PetscInt           i,dnnz,onnz,m,n;
383   HYPRE_Int          type;
384   PetscMPIInt        size;
385   PetscErrorCode     ierr;
386 
387   PetscFunctionBegin;
388   comm = PetscObjectComm((PetscObject)A);
389   PetscStackCallStandard(HYPRE_IJMatrixGetObjectType,(hA->ij,&type));
390   if (type != HYPRE_PARCSR) SETERRQ(comm,PETSC_ERR_SUP,"Only HYPRE_PARCSR is supported");
391   if (reuse == MAT_REUSE_MATRIX) {
392     PetscBool ismpiaij,isseqaij;
393     ierr = PetscObjectTypeCompare((PetscObject)*B,MATMPIAIJ,&ismpiaij);CHKERRQ(ierr);
394     ierr = PetscObjectTypeCompare((PetscObject)*B,MATSEQAIJ,&isseqaij);CHKERRQ(ierr);
395     if (!ismpiaij && !isseqaij) SETERRQ(comm,PETSC_ERR_SUP,"Only MATMPIAIJ or MATSEQAIJ are supported");
396   }
397   ierr = MPI_Comm_size(comm,&size);CHKERRQ(ierr);
398 
399   PetscStackCallStandard(HYPRE_IJMatrixGetObject,(hA->ij,(void**)&parcsr));
400   hdiag = hypre_ParCSRMatrixDiag(parcsr);
401   hoffd = hypre_ParCSRMatrixOffd(parcsr);
402   m     = hypre_CSRMatrixNumRows(hdiag);
403   n     = hypre_CSRMatrixNumCols(hdiag);
404   dnnz  = hypre_CSRMatrixNumNonzeros(hdiag);
405   onnz  = hypre_CSRMatrixNumNonzeros(hoffd);
406   if (reuse == MAT_INITIAL_MATRIX) {
407     ierr = PetscMalloc1(m+1,&dii);CHKERRQ(ierr);
408     ierr = PetscMalloc1(dnnz,&djj);CHKERRQ(ierr);
409     ierr = PetscMalloc1(dnnz,&da);CHKERRQ(ierr);
410   } else if (reuse == MAT_REUSE_MATRIX) {
411     PetscInt  nr;
412     PetscBool done;
413     if (size > 1) {
414       Mat_MPIAIJ *b = (Mat_MPIAIJ*)((*B)->data);
415 
416       ierr = MatGetRowIJ(b->A,0,PETSC_FALSE,PETSC_FALSE,&nr,(const PetscInt**)&dii,(const PetscInt**)&djj,&done);CHKERRQ(ierr);
417       if (nr != m) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_USER,"Cannot reuse mat: invalid number of local rows in diag part! %D != %D",nr,m);
418       if (dii[nr] < dnnz) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_USER,"Cannot reuse mat: invalid number of nonzeros in diag part! reuse %D hypre %D",dii[nr],dnnz);
419       ierr = MatSeqAIJGetArray(b->A,&da);CHKERRQ(ierr);
420     } else {
421       ierr = MatGetRowIJ(*B,0,PETSC_FALSE,PETSC_FALSE,&nr,(const PetscInt**)&dii,(const PetscInt**)&djj,&done);CHKERRQ(ierr);
422       if (nr != m) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_USER,"Cannot reuse mat: invalid number of local rows! %D != %D",nr,m);
423       if (dii[nr] < dnnz) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_USER,"Cannot reuse mat: invalid number of nonzeros! reuse %D hypre %D",dii[nr],dnnz);
424       ierr = MatSeqAIJGetArray(*B,&da);CHKERRQ(ierr);
425     }
426   } else { /* MAT_INPLACE_MATRIX */
427     dii = (PetscInt*)hypre_CSRMatrixI(hdiag);
428     djj = (PetscInt*)hypre_CSRMatrixJ(hdiag);
429     da  = hypre_CSRMatrixData(hdiag);
430   }
431   ierr = PetscMemcpy(dii,hypre_CSRMatrixI(hdiag),(m+1)*sizeof(PetscInt));CHKERRQ(ierr);
432   ierr = PetscMemcpy(djj,hypre_CSRMatrixJ(hdiag),dnnz*sizeof(PetscInt));CHKERRQ(ierr);
433   ierr = PetscMemcpy(da,hypre_CSRMatrixData(hdiag),dnnz*sizeof(PetscScalar));CHKERRQ(ierr);
434   iptr = djj;
435   aptr = da;
436   for (i=0; i<m; i++) {
437     PetscInt nc = dii[i+1]-dii[i];
438     ierr = PetscSortIntWithScalarArray(nc,iptr,aptr);CHKERRQ(ierr);
439     iptr += nc;
440     aptr += nc;
441   }
442   if (size > 1) {
443     HYPRE_Int *offdj,*coffd;
444 
445     if (reuse == MAT_INITIAL_MATRIX) {
446       ierr = PetscMalloc1(m+1,&oii);CHKERRQ(ierr);
447       ierr = PetscMalloc1(onnz,&ojj);CHKERRQ(ierr);
448       ierr = PetscMalloc1(onnz,&oa);CHKERRQ(ierr);
449     } else if (reuse == MAT_REUSE_MATRIX) {
450       Mat_MPIAIJ *b = (Mat_MPIAIJ*)((*B)->data);
451       PetscInt   nr,hr = hypre_CSRMatrixNumRows(hoffd);
452       PetscBool  done;
453 
454       ierr = MatGetRowIJ(b->B,0,PETSC_FALSE,PETSC_FALSE,&nr,(const PetscInt**)&oii,(const PetscInt**)&ojj,&done);CHKERRQ(ierr);
455       if (nr != hr) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_USER,"Cannot reuse mat: invalid number of local rows in offdiag part! %D != %D",nr,hr);
456       if (oii[nr] < onnz) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_USER,"Cannot reuse mat: invalid number of nonzeros in offdiag part! reuse %D hypre %D",oii[nr],onnz);
457       ierr = MatSeqAIJGetArray(b->B,&oa);CHKERRQ(ierr);
458     } else { /* MAT_INPLACE_MATRIX */
459       oii = (PetscInt*)hypre_CSRMatrixI(hoffd);
460       ojj = (PetscInt*)hypre_CSRMatrixJ(hoffd);
461       oa  = hypre_CSRMatrixData(hoffd);
462     }
463     ierr  = PetscMemcpy(oii,hypre_CSRMatrixI(hoffd),(m+1)*sizeof(PetscInt));CHKERRQ(ierr);
464     offdj = hypre_CSRMatrixJ(hoffd);
465     coffd = hypre_ParCSRMatrixColMapOffd(parcsr);
466     for (i=0; i<onnz; i++) ojj[i] = coffd[offdj[i]];
467     ierr = PetscMemcpy(oa,hypre_CSRMatrixData(hoffd),onnz*sizeof(PetscScalar));CHKERRQ(ierr);
468     iptr = ojj;
469     aptr = oa;
470     for (i=0; i<m; i++) {
471        PetscInt nc = oii[i+1]-oii[i];
472        ierr = PetscSortIntWithScalarArray(nc,iptr,aptr);CHKERRQ(ierr);
473        iptr += nc;
474        aptr += nc;
475     }
476     if (reuse == MAT_INITIAL_MATRIX) {
477       Mat_MPIAIJ *b;
478       Mat_SeqAIJ *d,*o;
479 
480       ierr = MatCreateMPIAIJWithSplitArrays(comm,m,n,PETSC_DECIDE,PETSC_DECIDE,dii,djj,da,oii,ojj,oa,B);CHKERRQ(ierr);
481       /* hack MPIAIJ */
482       b          = (Mat_MPIAIJ*)((*B)->data);
483       d          = (Mat_SeqAIJ*)b->A->data;
484       o          = (Mat_SeqAIJ*)b->B->data;
485       d->free_a  = PETSC_TRUE;
486       d->free_ij = PETSC_TRUE;
487       o->free_a  = PETSC_TRUE;
488       o->free_ij = PETSC_TRUE;
489     } else if (reuse == MAT_INPLACE_MATRIX) {
490       Mat T;
491       ierr = MatCreateMPIAIJWithSplitArrays(comm,m,n,PETSC_DECIDE,PETSC_DECIDE,dii,djj,da,oii,ojj,oa,&T);CHKERRQ(ierr);
492       hypre_CSRMatrixI(hdiag)    = NULL;
493       hypre_CSRMatrixJ(hdiag)    = NULL;
494       hypre_CSRMatrixData(hdiag) = NULL;
495       hypre_CSRMatrixI(hoffd)    = NULL;
496       hypre_CSRMatrixJ(hoffd)    = NULL;
497       hypre_CSRMatrixData(hoffd) = NULL;
498       ierr = MatHeaderReplace(A,&T);CHKERRQ(ierr);
499     }
500   } else {
501     oii  = NULL;
502     ojj  = NULL;
503     oa   = NULL;
504     if (reuse == MAT_INITIAL_MATRIX) {
505       Mat_SeqAIJ* b;
506       ierr = MatCreateSeqAIJWithArrays(comm,m,n,dii,djj,da,B);CHKERRQ(ierr);
507       /* hack SeqAIJ */
508       b          = (Mat_SeqAIJ*)((*B)->data);
509       b->free_a  = PETSC_TRUE;
510       b->free_ij = PETSC_TRUE;
511     } else if (reuse == MAT_INPLACE_MATRIX) {
512       Mat T;
513       ierr = MatCreateSeqAIJWithArrays(comm,m,n,dii,djj,da,&T);CHKERRQ(ierr);
514       hypre_CSRMatrixI(hdiag)    = NULL;
515       hypre_CSRMatrixJ(hdiag)    = NULL;
516       hypre_CSRMatrixData(hdiag) = NULL;
517       ierr = MatHeaderReplace(A,&T);CHKERRQ(ierr);
518     }
519   }
520 
521   /* we have to use hypre_Tfree to free the arrays */
522   if (reuse == MAT_INPLACE_MATRIX) {
523     void *ptrs[6] = {dii,djj,da,oii,ojj,oa};
524     const char *names[6] = {"_hypre_csr_dii",
525                             "_hypre_csr_djj",
526                             "_hypre_csr_da",
527                             "_hypre_csr_oii",
528                             "_hypre_csr_ojj",
529                             "_hypre_csr_oa"};
530     for (i=0; i<6; i++) {
531       PetscContainer c;
532 
533       ierr = PetscContainerCreate(comm,&c);CHKERRQ(ierr);
534       ierr = PetscContainerSetPointer(c,ptrs[i]);CHKERRQ(ierr);
535       ierr = PetscContainerSetUserDestroy(c,hypre_array_destroy);CHKERRQ(ierr);
536       ierr = PetscObjectCompose((PetscObject)(*B),names[i],(PetscObject)c);CHKERRQ(ierr);
537       ierr = PetscContainerDestroy(&c);CHKERRQ(ierr);
538     }
539   }
540   PetscFunctionReturn(0);
541 }
542 
543 #undef __FUNCT__
544 #define __FUNCT__ "MatPtAP_AIJ_HYPRE"
545 static PetscErrorCode MatPtAP_AIJ_HYPRE(Mat A,Mat P,MatReuse scall,PetscReal fill,Mat *C)
546 {
547   Mat_HYPRE          *hP = (Mat_HYPRE*)P->data;
548   hypre_ParCSRMatrix *tA,*Pparcsr,*ptapparcsr;
549   hypre_CSRMatrix    *hdiag,*hoffd;
550   Mat_SeqAIJ         *diag,*offd;
551   PetscInt           *garray,noffd,dnnz,onnz,*row_starts,*col_starts;
552   HYPRE_Int          type,P_owns_col_starts;
553   PetscBool          ismpiaij,isseqaij;
554   MPI_Comm           comm = PetscObjectComm((PetscObject)A);
555   char               mtype[256];
556   PetscErrorCode     ierr;
557 
558   PetscFunctionBegin;
559   PetscStackCallStandard(HYPRE_IJMatrixGetObjectType,(hP->ij,&type));
560   if (type != HYPRE_PARCSR) SETERRQ(comm,PETSC_ERR_SUP,"Only HYPRE_PARCSR is supported");
561   if (scall == MAT_REUSE_MATRIX) SETERRQ(comm,PETSC_ERR_SUP,"Unsupported MAT_REUSE_MATRIX");
562   ierr = PetscObjectTypeCompare((PetscObject)A,MATMPIAIJ,&ismpiaij);CHKERRQ(ierr);
563   ierr = PetscObjectTypeCompare((PetscObject)A,MATSEQAIJ,&isseqaij);CHKERRQ(ierr);
564   if (!ismpiaij && !isseqaij) SETERRQ1(comm,PETSC_ERR_SUP,"Unsupported type %s",((PetscObject)A)->type);
565 
566   /* It looks like we don't need to have the diagonal entries
567      ordered first in the rows of the diagonal part
568      for boomerAMGBuildCoarseOperator to work */
569   if (ismpiaij) {
570     Mat_MPIAIJ *a = (Mat_MPIAIJ*)(A->data);
571 
572     diag   = (Mat_SeqAIJ*)a->A->data;
573     offd   = (Mat_SeqAIJ*)a->B->data;
574     garray = a->garray;
575     noffd  = a->B->cmap->N;
576     dnnz   = diag->nz;
577     onnz   = offd->nz;
578   } else {
579     diag    = (Mat_SeqAIJ*)A->data;
580     offd    = NULL;
581     garray  = NULL;
582     noffd   = 0;
583     dnnz    = diag->nz;
584     onnz    = 0;
585   }
586 
587   /* create a temporary ParCSR */
588   if (HYPRE_AssumedPartitionCheck()) {
589    PetscMPIInt myid;
590 
591    ierr       = MPI_Comm_rank(comm,&myid);CHKERRQ(ierr);
592    row_starts = A->rmap->range + myid;
593    col_starts = A->cmap->range + myid;
594   } else {
595    row_starts = A->rmap->range;
596    col_starts = A->cmap->range;
597   }
598   tA = hypre_ParCSRMatrixCreate(comm,A->rmap->N,A->cmap->N,(HYPRE_Int*)row_starts,(HYPRE_Int*)col_starts,noffd,dnnz,onnz);
599   hypre_ParCSRMatrixSetRowStartsOwner(tA,0);
600   hypre_ParCSRMatrixSetColStartsOwner(tA,0);
601 
602   /* set diagonal part */
603   hdiag = hypre_ParCSRMatrixDiag(tA);
604   hypre_CSRMatrixI(hdiag)           = (HYPRE_Int*)diag->i;
605   hypre_CSRMatrixJ(hdiag)           = (HYPRE_Int*)diag->j;
606   hypre_CSRMatrixData(hdiag)        = diag->a;
607   hypre_CSRMatrixNumNonzeros(hdiag) = diag->nz;
608   hypre_CSRMatrixSetRownnz(hdiag);
609   hypre_CSRMatrixSetDataOwner(hdiag,0);
610 
611   /* set offdiagonal part */
612   hoffd = hypre_ParCSRMatrixOffd(tA);
613   if (offd) {
614     hypre_CSRMatrixI(hoffd)           = (HYPRE_Int*)offd->i;
615     hypre_CSRMatrixJ(hoffd)           = (HYPRE_Int*)offd->j;
616     hypre_CSRMatrixData(hoffd)        = offd->a;
617     hypre_CSRMatrixNumNonzeros(hoffd) = offd->nz;
618     hypre_CSRMatrixSetRownnz(hoffd);
619     hypre_CSRMatrixSetDataOwner(hoffd,0);
620     hypre_ParCSRMatrixSetNumNonzeros(tA);
621     hypre_ParCSRMatrixColMapOffd(tA) = (HYPRE_Int*)garray;
622   }
623 
624   /* call RAP from BoomerAMG */
625   /* Warning: hypre_BoomerAMGBuildCoarseOperator steals the col_starts
626      from Pparcsr (even if it does not own them)! */
627   PetscStackCallStandard(HYPRE_IJMatrixGetObject,(hP->ij,(void**)&Pparcsr));
628   P_owns_col_starts = hypre_ParCSRMatrixOwnsColStarts(Pparcsr);
629   ierr = PetscLogEventBegin(MAT_PtAPNumeric,A,P,0,0);CHKERRQ(ierr);
630   PetscStackCallStandard(hypre_BoomerAMGBuildCoarseOperator,(Pparcsr,tA,Pparcsr,&ptapparcsr));
631   ierr = PetscLogEventEnd(MAT_PtAPNumeric,A,P,0,0);CHKERRQ(ierr);
632   hypre_ParCSRMatrixSetRowStartsOwner(ptapparcsr,0);
633   hypre_ParCSRMatrixSetColStartsOwner(ptapparcsr,0);
634   if (P_owns_col_starts) hypre_ParCSRMatrixSetColStartsOwner(Pparcsr, 1);
635 
636   /* set pointers to NULL before destroying tA */
637   hypre_CSRMatrixI(hdiag)          = NULL;
638   hypre_CSRMatrixJ(hdiag)          = NULL;
639   hypre_CSRMatrixData(hdiag)       = NULL;
640   hypre_CSRMatrixI(hoffd)          = NULL;
641   hypre_CSRMatrixJ(hoffd)          = NULL;
642   hypre_CSRMatrixData(hoffd)       = NULL;
643   hypre_ParCSRMatrixColMapOffd(tA) = NULL;
644   hypre_ParCSRMatrixDestroy(tA);
645 
646   /* create C depending on mtype */
647   sprintf(mtype,MATAIJ);
648   ierr = PetscOptionsGetString(((PetscObject)A)->options,((PetscObject)A)->prefix,"-matptap_hypre_outtype",mtype,256,NULL);CHKERRQ(ierr);
649   ierr = MatCreateFromParCSR(ptapparcsr,mtype,PETSC_OWN_POINTER,C);CHKERRQ(ierr);
650   PetscFunctionReturn(0);
651 }
652 
653 #undef __FUNCT__
654 #define __FUNCT__ "MatPtAP_HYPRE_HYPRE"
655 static PetscErrorCode MatPtAP_HYPRE_HYPRE(Mat A,Mat P,MatReuse scall,PetscReal fill,Mat *C)
656 {
657   hypre_ParCSRMatrix *Aparcsr,*Pparcsr,*ptapparcsr;
658   Mat_HYPRE          *hA = (Mat_HYPRE*)A->data, *hP = (Mat_HYPRE*)P->data;
659   HYPRE_Int          type,P_owns_col_starts;
660   PetscErrorCode     ierr;
661 
662   PetscFunctionBegin;
663   if (scall == MAT_REUSE_MATRIX) SETERRQ(PetscObjectComm((PetscObject)A),PETSC_ERR_SUP,"Unsupported MAT_REUSE_MATRIX");
664   PetscStackCallStandard(HYPRE_IJMatrixGetObjectType,(hA->ij,&type));
665   if (type != HYPRE_PARCSR) SETERRQ(PetscObjectComm((PetscObject)A),PETSC_ERR_SUP,"Only HYPRE_PARCSR is supported");
666   PetscStackCallStandard(HYPRE_IJMatrixGetObjectType,(hP->ij,&type));
667   if (type != HYPRE_PARCSR) SETERRQ(PetscObjectComm((PetscObject)P),PETSC_ERR_SUP,"Only HYPRE_PARCSR is supported");
668   PetscStackCallStandard(HYPRE_IJMatrixGetObject,(hA->ij,(void**)&Aparcsr));
669   PetscStackCallStandard(HYPRE_IJMatrixGetObject,(hP->ij,(void**)&Pparcsr));
670 
671   /* call RAP from BoomerAMG */
672   /* Warning: hypre_BoomerAMGBuildCoarseOperator steals the col_starts
673      from Pparcsr (even if it does not own them)! */
674   P_owns_col_starts = hypre_ParCSRMatrixOwnsColStarts(Pparcsr);
675   ierr = PetscLogEventBegin(MAT_PtAPNumeric,A,P,0,0);CHKERRQ(ierr);
676   PetscStackCallStandard(hypre_BoomerAMGBuildCoarseOperator,(Pparcsr,Aparcsr,Pparcsr,&ptapparcsr));
677   ierr = PetscLogEventEnd(MAT_PtAPNumeric,A,P,0,0);CHKERRQ(ierr);
678   hypre_ParCSRMatrixSetRowStartsOwner(ptapparcsr,0);
679   hypre_ParCSRMatrixSetColStartsOwner(ptapparcsr,0);
680   if (P_owns_col_starts) hypre_ParCSRMatrixSetColStartsOwner(Pparcsr, 1);
681 
682   /* create MatHYPRE */
683   ierr = MatCreateFromParCSR(ptapparcsr,MATHYPRE,PETSC_OWN_POINTER,C);CHKERRQ(ierr);
684   PetscFunctionReturn(0);
685 }
686 
687 #undef __FUNCT__
688 #define __FUNCT__ "MatMultTranspose_HYPRE"
689 static PetscErrorCode MatMultTranspose_HYPRE(Mat A, Vec x, Vec y)
690 {
691   PetscErrorCode ierr;
692 
693   PetscFunctionBegin;
694   ierr = MatHYPRE_MultKernel_Private(A,x,y,PETSC_TRUE);CHKERRQ(ierr);
695   PetscFunctionReturn(0);
696 }
697 
698 #undef __FUNCT__
699 #define __FUNCT__ "MatMult_HYPRE"
700 static PetscErrorCode MatMult_HYPRE(Mat A, Vec x, Vec y)
701 {
702   PetscErrorCode ierr;
703 
704   PetscFunctionBegin;
705   ierr = MatHYPRE_MultKernel_Private(A,x,y,PETSC_FALSE);CHKERRQ(ierr);
706   PetscFunctionReturn(0);
707 }
708 
709 #undef __FUNCT__
710 #define __FUNCT__ "MatHYPRE_MultKernel_Private"
711 static PetscErrorCode MatHYPRE_MultKernel_Private(Mat A, Vec x, Vec y, PetscBool trans)
712 {
713   Mat_HYPRE          *hA = (Mat_HYPRE*)A->data;
714   hypre_ParCSRMatrix *parcsr;
715   hypre_ParVector    *hx,*hy;
716   PetscScalar        *ax,*ay,*sax,*say;
717   PetscErrorCode     ierr;
718 
719   PetscFunctionBegin;
720   PetscStackCallStandard(HYPRE_IJMatrixGetObject,(hA->ij,(void**)&parcsr));
721   PetscStackCallStandard(HYPRE_IJVectorGetObject,(hA->x,(void**)&hx));
722   PetscStackCallStandard(HYPRE_IJVectorGetObject,(hA->b,(void**)&hy));
723   ierr = VecGetArrayRead(x,(const PetscScalar**)&ax);CHKERRQ(ierr);
724   ierr = VecGetArray(y,&ay);CHKERRQ(ierr);
725   if (trans) {
726     VecHYPRE_ParVectorReplacePointer(hA->x,ay,say);
727     VecHYPRE_ParVectorReplacePointer(hA->b,ax,sax);
728     hypre_ParCSRMatrixMatvecT(1.,parcsr,hy,0.,hx);
729     VecHYPRE_ParVectorReplacePointer(hA->x,say,ay);
730     VecHYPRE_ParVectorReplacePointer(hA->b,sax,ax);
731   } else {
732     VecHYPRE_ParVectorReplacePointer(hA->x,ax,sax);
733     VecHYPRE_ParVectorReplacePointer(hA->b,ay,say);
734     hypre_ParCSRMatrixMatvec(1.,parcsr,hx,0.,hy);
735     VecHYPRE_ParVectorReplacePointer(hA->x,sax,ax);
736     VecHYPRE_ParVectorReplacePointer(hA->b,say,ay);
737   }
738   ierr = VecRestoreArrayRead(x,(const PetscScalar**)&ax);CHKERRQ(ierr);
739   ierr = VecRestoreArray(y,&ay);CHKERRQ(ierr);
740   PetscFunctionReturn(0);
741 }
742 
743 #undef __FUNCT__
744 #define __FUNCT__ "MatDestroy_HYPRE"
745 static PetscErrorCode MatDestroy_HYPRE(Mat A)
746 {
747   Mat_HYPRE      *hA = (Mat_HYPRE*)A->data;
748   PetscErrorCode ierr;
749 
750   PetscFunctionBegin;
751   if (hA->x) PetscStackCallStandard(HYPRE_IJVectorDestroy,(hA->x));
752   if (hA->b) PetscStackCallStandard(HYPRE_IJVectorDestroy,(hA->b));
753   if (hA->ij) {
754     if (!hA->inner_free) hypre_IJMatrixObject(hA->ij) = NULL;
755     PetscStackCallStandard(HYPRE_IJMatrixDestroy,(hA->ij));
756   }
757   if (hA->comm) { ierr = MPI_Comm_free(&hA->comm);CHKERRQ(ierr); }
758   ierr = PetscObjectComposeFunction((PetscObject)A,"MatConvert_hypre_aij_C",NULL);CHKERRQ(ierr);
759   ierr = PetscObjectComposeFunction((PetscObject)A,"MatConvert_hypre_is_C",NULL);CHKERRQ(ierr);
760   ierr = PetscObjectComposeFunction((PetscObject)A,"MatPtAP_seqaij_hypre_C",NULL);CHKERRQ(ierr);
761   ierr = PetscObjectComposeFunction((PetscObject)A,"MatPtAP_mpiaij_hypre_C",NULL);CHKERRQ(ierr);
762   ierr = PetscObjectComposeFunction((PetscObject)A,"MatHYPRESetPreallocation_C",NULL);CHKERRQ(ierr);
763   ierr = PetscObjectComposeFunction((PetscObject)A,"MatHYPREGetParCSR_C",NULL);CHKERRQ(ierr);
764   ierr = PetscFree(A->data);CHKERRQ(ierr);
765   PetscFunctionReturn(0);
766 }
767 
768 #undef __FUNCT__
769 #define __FUNCT__ "MatSetUp_HYPRE"
770 static PetscErrorCode MatSetUp_HYPRE(Mat A)
771 {
772   PetscErrorCode ierr;
773 
774   PetscFunctionBegin;
775   ierr = MatHYPRESetPreallocation(A,PETSC_DEFAULT,NULL,PETSC_DEFAULT,NULL);CHKERRQ(ierr);
776   PetscFunctionReturn(0);
777 }
778 
779 #undef __FUNCT__
780 #define __FUNCT__ "MatAssemblyEnd_HYPRE"
781 static PetscErrorCode MatAssemblyEnd_HYPRE(Mat A, MatAssemblyType mode)
782 {
783   Mat_HYPRE          *hA = (Mat_HYPRE*)A->data;
784   Vec                x,b;
785   PetscErrorCode     ierr;
786 
787   PetscFunctionBegin;
788   if (mode == MAT_FLUSH_ASSEMBLY) SETERRQ(PetscObjectComm((PetscObject)A),PETSC_ERR_SUP,"MAT_FLUSH_ASSEMBLY currently not supported with MATHYPRE");
789   PetscStackCallStandard(HYPRE_IJMatrixAssemble,(hA->ij));
790   if (hA->x) PetscFunctionReturn(0);
791   ierr = PetscLayoutSetUp(A->rmap);CHKERRQ(ierr);
792   ierr = PetscLayoutSetUp(A->cmap);CHKERRQ(ierr);
793   ierr = VecCreateMPIWithArray(PetscObjectComm((PetscObject)A),1,A->cmap->n,A->cmap->N,NULL,&x);CHKERRQ(ierr);
794   ierr = VecCreateMPIWithArray(PetscObjectComm((PetscObject)A),1,A->rmap->n,A->rmap->N,NULL,&b);CHKERRQ(ierr);
795   ierr = VecHYPRE_IJVectorCreate(x,&hA->x);CHKERRQ(ierr);
796   ierr = VecHYPRE_IJVectorCreate(b,&hA->b);CHKERRQ(ierr);
797   ierr = VecDestroy(&x);CHKERRQ(ierr);
798   ierr = VecDestroy(&b);CHKERRQ(ierr);
799   PetscFunctionReturn(0);
800 }
801 
802 #define MATHYPRE_SCRATCH 2048
803 
804 #undef __FUNCT__
805 #define __FUNCT__ "MatSetValues_HYPRE"
806 PetscErrorCode MatSetValues_HYPRE(Mat A, PetscInt nr, const PetscInt rows[], PetscInt nc, const PetscInt cols[], const PetscScalar v[], InsertMode ins)
807 {
808   Mat_HYPRE          *hA = (Mat_HYPRE*)A->data;
809   PetscScalar        *vals = (PetscScalar *)v;
810   PetscScalar        sscr[MATHYPRE_SCRATCH];
811   HYPRE_Int          cscr[2][MATHYPRE_SCRATCH];
812   HYPRE_Int          i,nzc;
813   PetscErrorCode     ierr;
814 
815   PetscFunctionBegin;
816   for (i=0,nzc=0;i<nc;i++) {
817     if (cols[i] >= 0) {
818       cscr[0][nzc  ] = cols[i];
819       cscr[1][nzc++] = i;
820     }
821   }
822   if (!nzc) PetscFunctionReturn(0);
823 
824   if (ins == ADD_VALUES) {
825     for (i=0;i<nr;i++) {
826       if (rows[i] >= 0) {
827         PetscInt j;
828         for (j=0;j<nzc;j++) sscr[j] = vals[cscr[1][j]];
829         PetscStackCallStandard(HYPRE_IJMatrixAddToValues,(hA->ij,1,&nzc,(HYPRE_Int*)(rows+i),cscr[0],sscr));
830       }
831       vals += nc;
832     }
833   } else { /* INSERT_VALUES */
834 #if defined(PETSC_USE_DEBUG)
835     /* Insert values cannot be used to insert offproc entries */
836     PetscInt rst,ren;
837     ierr = MatGetOwnershipRange(A,&rst,&ren);CHKERRQ(ierr);
838     for (i=0;i<nr;i++)
839       if (rows[i] >= 0 && (rows[i] < rst || rows[i] >= ren)) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP,"Cannot use INSERT_VALUES for off-proc entries with MatHYPRE. Use ADD_VALUES instead");
840 #endif
841     for (i=0;i<nr;i++) {
842       if (rows[i] >= 0) {
843         PetscInt j;
844         for (j=0;j<nzc;j++) sscr[j] = vals[cscr[1][j]];
845         PetscStackCallStandard(HYPRE_IJMatrixSetValues,(hA->ij,1,&nzc,(HYPRE_Int*)(rows+i),cscr[0],sscr));
846       }
847       vals += nc;
848     }
849   }
850   PetscFunctionReturn(0);
851 }
852 
853 #undef __FUNCT__
854 #define __FUNCT__ "MatHYPRESetPreallocation_HYPRE"
855 static PetscErrorCode MatHYPRESetPreallocation_HYPRE(Mat A, PetscInt dnz, const PetscInt dnnz[], PetscInt onz, const PetscInt onnz[])
856 {
857   Mat_HYPRE          *hA = (Mat_HYPRE*)A->data;
858   HYPRE_Int          *hdnnz,*honnz;
859   PetscInt           i,rs,re,cs,ce,bs;
860   PetscMPIInt        size;
861   PetscErrorCode     ierr;
862 
863   PetscFunctionBegin;
864   ierr = MatGetBlockSize(A,&bs);CHKERRQ(ierr);
865   ierr = PetscLayoutSetUp(A->rmap);CHKERRQ(ierr);
866   ierr = PetscLayoutSetUp(A->cmap);CHKERRQ(ierr);
867   rs   = A->rmap->rstart;
868   re   = A->rmap->rend;
869   cs   = A->cmap->rstart;
870   ce   = A->cmap->rend;
871   if (!hA->ij) {
872     PetscStackCallStandard(HYPRE_IJMatrixCreate,(hA->comm,rs,re-1,cs,ce-1,&hA->ij));
873     PetscStackCallStandard(HYPRE_IJMatrixSetObjectType,(hA->ij,HYPRE_PARCSR));
874   } else {
875     HYPRE_Int hrs,hre,hcs,hce;
876     PetscStackCallStandard(HYPRE_IJMatrixGetLocalRange,(hA->ij,&hrs,&hre,&hcs,&hce));
877     if (hre-hrs+1 != re -rs) SETERRQ4(PETSC_COMM_SELF,PETSC_ERR_PLIB,"Inconsistent local rows: IJMatrix [%D,%D), PETSc [%D,%d)",hrs,hre+1,rs,re);
878     if (hce-hcs+1 != ce -cs) SETERRQ4(PETSC_COMM_SELF,PETSC_ERR_PLIB,"Inconsistent local cols: IJMatrix [%D,%D), PETSc [%D,%d)",hcs,hce+1,cs,ce);
879   }
880   PetscStackCallStandard(HYPRE_IJMatrixInitialize,(hA->ij));
881 
882   if (dnz == PETSC_DEFAULT || dnz == PETSC_DECIDE) dnz = 10*bs;
883   if (onz == PETSC_DEFAULT || onz == PETSC_DECIDE) onz = 10*bs;
884 
885   if (!dnnz) {
886     ierr = PetscMalloc1(A->rmap->n,&hdnnz);CHKERRQ(ierr);
887     for (i=0;i<A->rmap->n;i++) hdnnz[i] = dnz;
888   } else {
889     hdnnz = (HYPRE_Int*)dnnz;
890   }
891   ierr = MPI_Comm_size(PetscObjectComm((PetscObject)A),&size);CHKERRQ(ierr);
892   if (size > 1) {
893     if (!onnz) {
894       ierr = PetscMalloc1(A->rmap->n,&honnz);CHKERRQ(ierr);
895       for (i=0;i<A->rmap->n;i++) honnz[i] = onz;
896     } else {
897       honnz = (HYPRE_Int*)onnz;
898     }
899     PetscStackCallStandard(HYPRE_IJMatrixSetDiagOffdSizes,(hA->ij,hdnnz,honnz));
900   } else {
901     honnz = NULL;
902     PetscStackCallStandard(HYPRE_IJMatrixSetRowSizes,(hA->ij,hdnnz));
903   }
904   if (!dnnz) {
905     ierr = PetscFree(hdnnz);CHKERRQ(ierr);
906   }
907   if (!onnz && honnz) {
908     ierr = PetscFree(honnz);CHKERRQ(ierr);
909   }
910   A->preallocated = PETSC_TRUE;
911 
912   /* SetDiagOffdSizes sets hypre_AuxParCSRMatrixNeedAux(aux_matrix) = 0 */
913   {
914     hypre_AuxParCSRMatrix *aux_matrix;
915     aux_matrix = (hypre_AuxParCSRMatrix*)hypre_IJMatrixTranslator(hA->ij);
916     hypre_AuxParCSRMatrixNeedAux(aux_matrix) = 1;
917   }
918   PetscFunctionReturn(0);
919 }
920 
921 /*@C
922    MatHYPRESetPreallocation - Preallocates memory for a sparse parallel matrix in HYPRE IJ format
923 
924    Collective on Mat
925 
926    Input Parameters:
927 +  A - the matrix
928 .  dnz  - number of nonzeros per row in DIAGONAL portion of local submatrix
929           (same value is used for all local rows)
930 .  dnnz - array containing the number of nonzeros in the various rows of the
931           DIAGONAL portion of the local submatrix (possibly different for each row)
932           or NULL (PETSC_NULL_INTEGER in Fortran), if d_nz is used to specify the nonzero structure.
933           The size of this array is equal to the number of local rows, i.e 'm'.
934           For matrices that will be factored, you must leave room for (and set)
935           the diagonal entry even if it is zero.
936 .  onz  - number of nonzeros per row in the OFF-DIAGONAL portion of local
937           submatrix (same value is used for all local rows).
938 -  onnz - array containing the number of nonzeros in the various rows of the
939           OFF-DIAGONAL portion of the local submatrix (possibly different for
940           each row) or NULL (PETSC_NULL_INTEGER in Fortran), if o_nz is used to specify the nonzero
941           structure. The size of this array is equal to the number
942           of local rows, i.e 'm'.
943 
944    Notes: If the *nnz parameter is given then the *nz parameter is ignored; for sequential matrices, onz and onnz are ignored.
945 
946    Level: intermediate
947 
948 .keywords: matrix, aij, compressed row, sparse, parallel
949 
950 .seealso: MatCreate(), MatMPIAIJSetPreallocation, MATHYPRE
951 @*/
952 #undef __FUNCT__
953 #define __FUNCT__ "MatHYPRESetPreallocation"
954 PetscErrorCode MatHYPRESetPreallocation(Mat A, PetscInt dnz, const PetscInt dnnz[], PetscInt onz, const PetscInt onnz[])
955 {
956   PetscErrorCode ierr;
957 
958   PetscFunctionBegin;
959   PetscValidHeaderSpecific(A,MAT_CLASSID,1);
960   PetscValidType(A,1);
961   ierr = PetscTryMethod(A,"MatHYPRESetPreallocation_C",(Mat,PetscInt,const PetscInt[],PetscInt,const PetscInt[]),(A,dnz,dnnz,onz,onnz));CHKERRQ(ierr);
962   PetscFunctionReturn(0);
963 }
964 
965 /*
966    MatCreateFromParCSR - Creates a matrix from a hypre_ParCSRMatrix
967 
968    Collective
969 
970    Input Parameters:
971 +  vparcsr  - the pointer to the hypre_ParCSRMatrix
972 .  mtype    - matrix type to be created. Currently MATAIJ, MATIS and MATHYPRE are supported.
973 -  copymode - PETSc copying options
974 
975    Output Parameter:
976 .  A  - the matrix
977 
978    Level: intermediate
979 
980 .seealso: MatHYPRE, PetscCopyMode
981 */
982 #undef __FUNCT__
983 #define __FUNCT__ "MatCreateFromParCSR"
984 PETSC_EXTERN PetscErrorCode MatCreateFromParCSR(hypre_ParCSRMatrix *vparcsr, MatType mtype, PetscCopyMode copymode, Mat* A)
985 {
986   Mat                   T;
987   Mat_HYPRE             *hA;
988   hypre_ParCSRMatrix    *parcsr;
989   MPI_Comm              comm;
990   PetscInt              rstart,rend,cstart,cend,M,N;
991   PetscBool             isseqaij,ismpiaij,isaij,ishyp,isis;
992   PetscErrorCode        ierr;
993 
994   PetscFunctionBegin;
995   parcsr = (hypre_ParCSRMatrix *)vparcsr;
996   comm   = hypre_ParCSRMatrixComm(parcsr);
997   ierr   = PetscStrcmp(mtype,MATSEQAIJ,&isseqaij);CHKERRQ(ierr);
998   ierr   = PetscStrcmp(mtype,MATMPIAIJ,&ismpiaij);CHKERRQ(ierr);
999   ierr   = PetscStrcmp(mtype,MATAIJ,&isaij);CHKERRQ(ierr);
1000   ierr   = PetscStrcmp(mtype,MATHYPRE,&ishyp);CHKERRQ(ierr);
1001   ierr   = PetscStrcmp(mtype,MATIS,&isis);CHKERRQ(ierr);
1002   isaij  = (PetscBool)(isseqaij || ismpiaij || isaij);
1003   if (!isaij && !ishyp && !isis) SETERRQ6(comm,PETSC_ERR_SUP,"Unsupported MatType %s! Supported types are %s, %s, %s, %s, and %s",mtype,MATAIJ,MATSEQAIJ,MATMPIAIJ,MATIS,MATHYPRE);
1004   if (ishyp && copymode == PETSC_COPY_VALUES) SETERRQ(comm,PETSC_ERR_SUP,"Unsupported copymode PETSC_COPY_VALUES");
1005 
1006   /* access ParCSRMatrix */
1007   rstart = hypre_ParCSRMatrixFirstRowIndex(parcsr);
1008   rend   = hypre_ParCSRMatrixLastRowIndex(parcsr);
1009   cstart = hypre_ParCSRMatrixFirstColDiag(parcsr);
1010   cend   = hypre_ParCSRMatrixLastColDiag(parcsr);
1011   M      = hypre_ParCSRMatrixGlobalNumRows(parcsr);
1012   N      = hypre_ParCSRMatrixGlobalNumCols(parcsr);
1013 
1014   /* create PETSc matrix with MatHYPRE */
1015   ierr = MatCreate(comm,&T);CHKERRQ(ierr);
1016   ierr = MatSetSizes(T,rend-rstart+1,cend-cstart+1,M,N);CHKERRQ(ierr);
1017   ierr = MatSetType(T,MATHYPRE);CHKERRQ(ierr);
1018   hA   = (Mat_HYPRE*)(T->data);
1019 
1020   /* create HYPRE_IJMatrix */
1021   PetscStackCallStandard(HYPRE_IJMatrixCreate,(hA->comm,rstart,rend-1,cstart,cend-1,&hA->ij));
1022 
1023   /* set ParCSR object */
1024   PetscStackCallStandard(HYPRE_IJMatrixSetObjectType,(hA->ij,HYPRE_PARCSR));
1025   hypre_IJMatrixObject(hA->ij) = parcsr;
1026   T->preallocated = PETSC_TRUE;
1027 
1028   /* set assembled flag */
1029   hypre_IJMatrixAssembleFlag(hA->ij) = 1;
1030   PetscStackCallStandard(HYPRE_IJMatrixInitialize,(hA->ij));
1031   if (ishyp) {
1032     /* prevent from freeing the pointer */
1033     if (copymode == PETSC_USE_POINTER) hA->inner_free = PETSC_FALSE;
1034     *A = T;
1035     ierr = MatAssemblyBegin(*A,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr);
1036     ierr = MatAssemblyEnd(*A,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr);
1037   } else if (isaij) {
1038     if (copymode != PETSC_OWN_POINTER) {
1039       /* prevent from freeing the pointer */
1040       hA->inner_free = PETSC_FALSE;
1041       ierr = MatConvert_HYPRE_AIJ(T,MATAIJ,MAT_INITIAL_MATRIX,A);CHKERRQ(ierr);
1042       ierr = MatDestroy(&T);CHKERRQ(ierr);
1043     } else { /* AIJ return type with PETSC_OWN_POINTER */
1044       ierr = MatConvert_HYPRE_AIJ(T,MATAIJ,MAT_INPLACE_MATRIX,&T);CHKERRQ(ierr);
1045       *A   = T;
1046     }
1047   } else if (isis) {
1048     ierr = MatConvert_HYPRE_IS(T,MATIS,MAT_INITIAL_MATRIX,A);CHKERRQ(ierr);
1049     if (copymode != PETSC_OWN_POINTER) hA->inner_free = PETSC_FALSE;
1050     ierr = MatDestroy(&T);CHKERRQ(ierr);
1051   }
1052   PetscFunctionReturn(0);
1053 }
1054 
1055 #undef __FUNCT__
1056 #define __FUNCT__ "MatHYPREGetParCSR_HYPRE"
1057 PetscErrorCode MatHYPREGetParCSR_HYPRE(Mat A, hypre_ParCSRMatrix **parcsr)
1058 {
1059   Mat_HYPRE*            hA = (Mat_HYPRE*)A->data;
1060   HYPRE_Int             type;
1061   PetscErrorCode        ierr;
1062 
1063   PetscFunctionBegin;
1064   if (!hA->ij) SETERRQ(PetscObjectComm((PetscObject)A),PETSC_ERR_PLIB,"HYPRE_IJMatrix not present");
1065   PetscStackCallStandard(HYPRE_IJMatrixGetObjectType,(hA->ij,&type));
1066   if (type != HYPRE_PARCSR) SETERRQ(PetscObjectComm((PetscObject)A),PETSC_ERR_SUP,"HYPRE_IJMatrix is not of type HYPRE_PARCSR");
1067   PetscStackCallStandard(HYPRE_IJMatrixGetObject,(hA->ij,(void**)parcsr));
1068   PetscFunctionReturn(0);
1069 }
1070 
1071 /*
1072    MatHYPREGetParCSR - Gets the pointer to the ParCSR matrix
1073 
1074    Not collective
1075 
1076    Input Parameters:
1077 +  A  - the MATHYPRE object
1078 
1079    Output Parameter:
1080 .  parcsr  - the pointer to the hypre_ParCSRMatrix
1081 
1082    Level: intermediate
1083 
1084 .seealso: MatHYPRE, PetscCopyMode
1085 */
1086 #undef __FUNCT__
1087 #define __FUNCT__ "MatHYPREGetParCSR"
1088 PetscErrorCode MatHYPREGetParCSR(Mat A, hypre_ParCSRMatrix **parcsr)
1089 {
1090   PetscErrorCode ierr;
1091 
1092   PetscFunctionBegin;
1093   PetscValidHeaderSpecific(A,MAT_CLASSID,1);
1094   PetscValidType(A,1);
1095   ierr = PetscUseMethod(A,"MatHYPREGetParCSR_C",(Mat,hypre_ParCSRMatrix**),(A,parcsr));CHKERRQ(ierr);
1096   PetscFunctionReturn(0);
1097 }
1098 
1099 #undef __FUNCT__
1100 #define __FUNCT__ "MatCreate_HYPRE"
1101 PETSC_EXTERN PetscErrorCode MatCreate_HYPRE(Mat B)
1102 {
1103   Mat_HYPRE      *hB;
1104   PetscErrorCode ierr;
1105 
1106   PetscFunctionBegin;
1107   ierr           = PetscNewLog(B,&hB);CHKERRQ(ierr);
1108   hB->inner_free = PETSC_TRUE;
1109 
1110   B->data       = (void*)hB;
1111   B->rmap->bs   = 1;
1112   B->assembled  = PETSC_FALSE;
1113 
1114   B->ops->mult          = MatMult_HYPRE;
1115   B->ops->multtranspose = MatMultTranspose_HYPRE;
1116   B->ops->setup         = MatSetUp_HYPRE;
1117   B->ops->destroy       = MatDestroy_HYPRE;
1118   B->ops->assemblyend   = MatAssemblyEnd_HYPRE;
1119   B->ops->ptap          = MatPtAP_HYPRE_HYPRE;
1120   B->ops->setvalues     = MatSetValues_HYPRE;
1121 
1122   ierr = MPI_Comm_dup(PetscObjectComm((PetscObject)B),&hB->comm);CHKERRQ(ierr);
1123   ierr = PetscObjectChangeTypeName((PetscObject)B,MATHYPRE);CHKERRQ(ierr);
1124   ierr = PetscObjectComposeFunction((PetscObject)B,"MatConvert_hypre_aij_C",MatConvert_HYPRE_AIJ);CHKERRQ(ierr);
1125   ierr = PetscObjectComposeFunction((PetscObject)B,"MatConvert_hypre_is_C",MatConvert_HYPRE_IS);CHKERRQ(ierr);
1126   ierr = PetscObjectComposeFunction((PetscObject)B,"MatPtAP_seqaij_hypre_C",MatPtAP_AIJ_HYPRE);CHKERRQ(ierr);
1127   ierr = PetscObjectComposeFunction((PetscObject)B,"MatPtAP_mpiaij_hypre_C",MatPtAP_AIJ_HYPRE);CHKERRQ(ierr);
1128   ierr = PetscObjectComposeFunction((PetscObject)B,"MatHYPRESetPreallocation_C",MatHYPRESetPreallocation_HYPRE);CHKERRQ(ierr);
1129   ierr = PetscObjectComposeFunction((PetscObject)B,"MatHYPREGetParCSR_C",MatHYPREGetParCSR_HYPRE);CHKERRQ(ierr);
1130   PetscFunctionReturn(0);
1131 }
1132 
1133 #undef __FUNCT__
1134 #define __FUNCT__ "hypre_array_destroy"
1135 static PetscErrorCode hypre_array_destroy(void *ptr)
1136 {
1137    PetscFunctionBegin;
1138    hypre_TFree(ptr);
1139    PetscFunctionReturn(0);
1140 }
1141 
1142 #if 0
1143 /*
1144     Does NOT copy the data over, instead uses DIRECTLY the pointers from the PETSc MPIAIJ format
1145 
1146     This is UNFINISHED and does NOT work! The problem is that hypre puts the diagonal entry first
1147     which will corrupt the PETSc data structure if we did this. Need a work around to this problem.
1148 */
1149 #include <_hypre_IJ_mv.h>
1150 #include <HYPRE_IJ_mv.h>
1151 
1152 #undef __FUNCT__
1153 #define __FUNCT__ "MatHYPRE_IJMatrixLink"
1154 PetscErrorCode MatHYPRE_IJMatrixLink(Mat A, HYPRE_IJMatrix *ij)
1155 {
1156   PetscErrorCode        ierr;
1157   PetscInt              rstart,rend,cstart,cend;
1158   PetscBool             flg;
1159   hypre_AuxParCSRMatrix *aux_matrix;
1160 
1161   PetscFunctionBegin;
1162   PetscValidHeaderSpecific(A,MAT_CLASSID,1);
1163   PetscValidType(A,1);
1164   PetscValidPointer(ij,2);
1165   ierr = PetscObjectTypeCompare((PetscObject)A,MATMPIAIJ,&flg);CHKERRQ(ierr);
1166   if (!flg) SETERRQ(PetscObjectComm((PetscObject)A),PETSC_ERR_SUP,"Can only use with PETSc MPIAIJ matrices");
1167   ierr = MatSetUp(A);CHKERRQ(ierr);
1168 
1169   ierr   = PetscLogEventBegin(MAT_Convert,A,0,0,0);CHKERRQ(ierr);
1170   rstart = A->rmap->rstart;
1171   rend   = A->rmap->rend;
1172   cstart = A->cmap->rstart;
1173   cend   = A->cmap->rend;
1174   PetscStackCallStandard(HYPRE_IJMatrixCreate,(PetscObjectComm((PetscObject)A),rstart,rend-1,cstart,cend-1,ij));
1175   PetscStackCallStandard(HYPRE_IJMatrixSetObjectType,(*ij,HYPRE_PARCSR));
1176 
1177   PetscStackCallStandard(HYPRE_IJMatrixInitialize,(*ij));
1178   PetscStackCall("hypre_IJMatrixTranslator",aux_matrix = (hypre_AuxParCSRMatrix*)hypre_IJMatrixTranslator(*ij));
1179 
1180   hypre_AuxParCSRMatrixNeedAux(aux_matrix) = 0;
1181 
1182   /* this is the Hack part where we monkey directly with the hypre datastructures */
1183 
1184   PetscStackCallStandard(HYPRE_IJMatrixAssemble,(*ij));
1185   ierr = PetscLogEventEnd(MAT_Convert,A,0,0,0);CHKERRQ(ierr);
1186   PetscFunctionReturn(0);
1187 }
1188 #endif
1189