Actual source code: umfpack.c
petsc-3.3-p7 2013-05-11
2: /*
3: Provides an interface to the UMFPACKv5.1 sparse solver
5: When build with PETSC_USE_64BIT_INDICES this will use UF_Long as the
6: integer type in UMFPACK, otherwise it will use int. This means
7: all integers in this file as simply declared as PetscInt. Also it means
8: that UMFPACK UL_Long version MUST be built with 64 bit integers when used.
10: */
11: #include <../src/mat/impls/aij/seq/aij.h>
13: #if defined(PETSC_USE_64BIT_INDICES)
14: #if defined(PETSC_USE_COMPLEX)
15: #define umfpack_UMF_free_symbolic umfpack_zl_free_symbolic
16: #define umfpack_UMF_free_numeric umfpack_zl_free_numeric
17: #define umfpack_UMF_wsolve umfpack_zl_wsolve
18: #define umfpack_UMF_numeric umfpack_zl_numeric
19: #define umfpack_UMF_report_numeric umfpack_zl_report_numeric
20: #define umfpack_UMF_report_control umfpack_zl_report_control
21: #define umfpack_UMF_report_status umfpack_zl_report_status
22: #define umfpack_UMF_report_info umfpack_zl_report_info
23: #define umfpack_UMF_report_symbolic umfpack_zl_report_symbolic
24: #define umfpack_UMF_qsymbolic umfpack_zl_qsymbolic
25: #define umfpack_UMF_symbolic umfpack_zl_symbolic
26: #define umfpack_UMF_defaults umfpack_zl_defaults
28: #else
29: #define umfpack_UMF_free_symbolic umfpack_dl_free_symbolic
30: #define umfpack_UMF_free_numeric umfpack_dl_free_numeric
31: #define umfpack_UMF_wsolve umfpack_dl_wsolve
32: #define umfpack_UMF_numeric umfpack_dl_numeric
33: #define umfpack_UMF_report_numeric umfpack_dl_report_numeric
34: #define umfpack_UMF_report_control umfpack_dl_report_control
35: #define umfpack_UMF_report_status umfpack_dl_report_status
36: #define umfpack_UMF_report_info umfpack_dl_report_info
37: #define umfpack_UMF_report_symbolic umfpack_dl_report_symbolic
38: #define umfpack_UMF_qsymbolic umfpack_dl_qsymbolic
39: #define umfpack_UMF_symbolic umfpack_dl_symbolic
40: #define umfpack_UMF_defaults umfpack_dl_defaults
41: #endif
43: #else
44: #if defined(PETSC_USE_COMPLEX)
45: #define umfpack_UMF_free_symbolic umfpack_zi_free_symbolic
46: #define umfpack_UMF_free_numeric umfpack_zi_free_numeric
47: #define umfpack_UMF_wsolve umfpack_zi_wsolve
48: #define umfpack_UMF_numeric umfpack_zi_numeric
49: #define umfpack_UMF_report_numeric umfpack_zi_report_numeric
50: #define umfpack_UMF_report_control umfpack_zi_report_control
51: #define umfpack_UMF_report_status umfpack_zi_report_status
52: #define umfpack_UMF_report_info umfpack_zi_report_info
53: #define umfpack_UMF_report_symbolic umfpack_zi_report_symbolic
54: #define umfpack_UMF_qsymbolic umfpack_zi_qsymbolic
55: #define umfpack_UMF_symbolic umfpack_zi_symbolic
56: #define umfpack_UMF_defaults umfpack_zi_defaults
58: #else
59: #define umfpack_UMF_free_symbolic umfpack_di_free_symbolic
60: #define umfpack_UMF_free_numeric umfpack_di_free_numeric
61: #define umfpack_UMF_wsolve umfpack_di_wsolve
62: #define umfpack_UMF_numeric umfpack_di_numeric
63: #define umfpack_UMF_report_numeric umfpack_di_report_numeric
64: #define umfpack_UMF_report_control umfpack_di_report_control
65: #define umfpack_UMF_report_status umfpack_di_report_status
66: #define umfpack_UMF_report_info umfpack_di_report_info
67: #define umfpack_UMF_report_symbolic umfpack_di_report_symbolic
68: #define umfpack_UMF_qsymbolic umfpack_di_qsymbolic
69: #define umfpack_UMF_symbolic umfpack_di_symbolic
70: #define umfpack_UMF_defaults umfpack_di_defaults
71: #endif
72: #endif
75: #define UF_long long long
76: #define UF_long_max LONG_LONG_MAX
77: #define UF_long_id "%lld"
79: EXTERN_C_BEGIN
80: #include <umfpack.h>
81: EXTERN_C_END
83: static const char *const UmfpackOrderingTypes[] = {"CHOLMOD","AMD","GIVEN","METIS","BEST","NONE","USER","UmfpackOrderingTypes","UMFPACK_ORDERING_",0};
85: typedef struct {
86: void *Symbolic, *Numeric;
87: double Info[UMFPACK_INFO], Control[UMFPACK_CONTROL],*W;
88: PetscInt *Wi,*perm_c;
89: Mat A; /* Matrix used for factorization */
90: MatStructure flg;
91: PetscBool PetscMatOrdering;
93: /* Flag to clean up UMFPACK objects during Destroy */
94: PetscBool CleanUpUMFPACK;
95: } Mat_UMFPACK;
99: static PetscErrorCode MatDestroy_UMFPACK(Mat A)
100: {
102: Mat_UMFPACK *lu=(Mat_UMFPACK*)A->spptr;
105: if (lu && lu->CleanUpUMFPACK) {
106: umfpack_UMF_free_symbolic(&lu->Symbolic);
107: umfpack_UMF_free_numeric(&lu->Numeric);
108: PetscFree(lu->Wi);
109: PetscFree(lu->W);
110: PetscFree(lu->perm_c);
111: }
112: MatDestroy(&lu->A);
113: PetscFree(A->spptr);
114: MatDestroy_SeqAIJ(A);
115: return(0);
116: }
120: static PetscErrorCode MatSolve_UMFPACK_Private(Mat A,Vec b,Vec x,int uflag)
121: {
122: Mat_UMFPACK *lu = (Mat_UMFPACK*)A->spptr;
123: Mat_SeqAIJ *a = (Mat_SeqAIJ*)lu->A->data;
124: PetscScalar *av = a->a,*ba,*xa;
126: PetscInt *ai = a->i,*aj = a->j,status;
129: /* solve Ax = b by umfpack_*_wsolve */
130: /* ----------------------------------*/
132: if (!lu->Wi) { /* first time, allocate working space for wsolve */
133: PetscMalloc(A->rmap->n*sizeof(PetscInt),&lu->Wi);
134: PetscMalloc(5*A->rmap->n*sizeof(PetscScalar),&lu->W);
135: }
137: VecGetArray(b,&ba);
138: VecGetArray(x,&xa);
139: #if defined(PETSC_USE_COMPLEX)
140: status = umfpack_UMF_wsolve(uflag,ai,aj,(PetscReal*)av,NULL,(PetscReal*)xa,NULL,(PetscReal*)ba,NULL,
141: lu->Numeric,lu->Control,lu->Info,lu->Wi,lu->W);
142: #else
143: status = umfpack_UMF_wsolve(uflag,ai,aj,av,xa,ba,lu->Numeric,lu->Control,lu->Info,lu->Wi,lu->W);
144: #endif
145: umfpack_UMF_report_info(lu->Control, lu->Info);
146: if (status < 0){
147: umfpack_UMF_report_status(lu->Control, status);
148: SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"umfpack_UMF_wsolve failed");
149: }
151: VecRestoreArray(b,&ba);
152: VecRestoreArray(x,&xa);
153: return(0);
154: }
158: static PetscErrorCode MatSolve_UMFPACK(Mat A,Vec b,Vec x)
159: {
163: /* We gave UMFPACK the algebraic transpose (because it assumes column alignment) */
164: MatSolve_UMFPACK_Private(A,b,x,UMFPACK_Aat);
165: return(0);
166: }
170: static PetscErrorCode MatSolveTranspose_UMFPACK(Mat A,Vec b,Vec x)
171: {
175: /* We gave UMFPACK the algebraic transpose (because it assumes column alignment) */
176: MatSolve_UMFPACK_Private(A,b,x,UMFPACK_A);
177: return(0);
178: }
182: static PetscErrorCode MatLUFactorNumeric_UMFPACK(Mat F,Mat A,const MatFactorInfo *info)
183: {
184: Mat_UMFPACK *lu = (Mat_UMFPACK*)(F)->spptr;
185: Mat_SeqAIJ *a = (Mat_SeqAIJ*)A->data;
186: PetscInt *ai = a->i,*aj=a->j,status;
187: PetscScalar *av = a->a;
191: /* numeric factorization of A' */
192: /* ----------------------------*/
194: if (lu->flg == SAME_NONZERO_PATTERN && lu->Numeric){
195: umfpack_UMF_free_numeric(&lu->Numeric);
196: }
197: #if defined(PETSC_USE_COMPLEX)
198: status = umfpack_UMF_numeric(ai,aj,(double*)av,NULL,lu->Symbolic,&lu->Numeric,lu->Control,lu->Info);
199: #else
200: status = umfpack_UMF_numeric(ai,aj,av,lu->Symbolic,&lu->Numeric,lu->Control,lu->Info);
201: #endif
202: if (status < 0) {
203: umfpack_UMF_report_status(lu->Control, status);
204: SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"umfpack_UMF_numeric failed");
205: }
206: /* report numeric factorization of A' when Control[PRL] > 3 */
207: (void) umfpack_UMF_report_numeric(lu->Numeric, lu->Control);
209: PetscObjectReference((PetscObject)A);
210: MatDestroy(&lu->A);
211: lu->A = A;
212: lu->flg = SAME_NONZERO_PATTERN;
213: lu->CleanUpUMFPACK = PETSC_TRUE;
214: F->ops->solve = MatSolve_UMFPACK;
215: F->ops->solvetranspose = MatSolveTranspose_UMFPACK;
216: return(0);
217: }
219: /*
220: Note the r permutation is ignored
221: */
224: static PetscErrorCode MatLUFactorSymbolic_UMFPACK(Mat F,Mat A,IS r,IS c,const MatFactorInfo *info)
225: {
226: Mat_SeqAIJ *a = (Mat_SeqAIJ*)A->data;
227: Mat_UMFPACK *lu = (Mat_UMFPACK*)(F->spptr);
229: PetscInt i,*ai = a->i,*aj = a->j,m=A->rmap->n,n=A->cmap->n;
230: PetscScalar *av = a->a;
231: const PetscInt *ra;
232: PetscInt status;
235: if (lu->PetscMatOrdering) {
236: ISGetIndices(r,&ra);
237: PetscMalloc(m*sizeof(PetscInt),&lu->perm_c);
238: /* we cannot simply memcpy on 64 bit archs */
239: for(i = 0; i < m; i++) lu->perm_c[i] = ra[i];
240: ISRestoreIndices(r,&ra);
241: }
243: /* print the control parameters */
244: if(lu->Control[UMFPACK_PRL] > 1) umfpack_UMF_report_control(lu->Control);
246: /* symbolic factorization of A' */
247: /* ---------------------------------------------------------------------- */
248: if (lu->PetscMatOrdering) { /* use Petsc row ordering */
249: #if !defined(PETSC_USE_COMPLEX)
250: status = umfpack_UMF_qsymbolic(n,m,ai,aj,av,lu->perm_c,&lu->Symbolic,lu->Control,lu->Info);
251: #else
252: status = umfpack_UMF_qsymbolic(n,m,ai,aj,NULL,NULL,
253: lu->perm_c,&lu->Symbolic,lu->Control,lu->Info);
254: #endif
255: } else { /* use Umfpack col ordering */
256: #if !defined(PETSC_USE_COMPLEX)
257: status = umfpack_UMF_symbolic(n,m,ai,aj,av,&lu->Symbolic,lu->Control,lu->Info);
258: #else
259: status = umfpack_UMF_symbolic(n,m,ai,aj,NULL,NULL,&lu->Symbolic,lu->Control,lu->Info);
260: #endif
261: }
262: if (status < 0){
263: umfpack_UMF_report_info(lu->Control, lu->Info);
264: umfpack_UMF_report_status(lu->Control, status);
265: SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"umfpack_UMF_symbolic failed");
266: }
267: /* report sumbolic factorization of A' when Control[PRL] > 3 */
268: (void) umfpack_UMF_report_symbolic(lu->Symbolic, lu->Control);
270: lu->flg = DIFFERENT_NONZERO_PATTERN;
271: lu->CleanUpUMFPACK = PETSC_TRUE;
272: (F)->ops->lufactornumeric = MatLUFactorNumeric_UMFPACK;
273: return(0);
274: }
278: static PetscErrorCode MatFactorInfo_UMFPACK(Mat A,PetscViewer viewer)
279: {
280: Mat_UMFPACK *lu= (Mat_UMFPACK*)A->spptr;
284: /* check if matrix is UMFPACK type */
285: if (A->ops->solve != MatSolve_UMFPACK) return(0);
287: PetscViewerASCIIPrintf(viewer,"UMFPACK run parameters:\n");
288: /* Control parameters used by reporting routiones */
289: PetscViewerASCIIPrintf(viewer," Control[UMFPACK_PRL]: %g\n",lu->Control[UMFPACK_PRL]);
291: /* Control parameters used by symbolic factorization */
292: PetscViewerASCIIPrintf(viewer," Control[UMFPACK_STRATEGY]: %g\n",lu->Control[UMFPACK_STRATEGY]);
293: PetscViewerASCIIPrintf(viewer," Control[UMFPACK_DENSE_COL]: %g\n",lu->Control[UMFPACK_DENSE_COL]);
294: PetscViewerASCIIPrintf(viewer," Control[UMFPACK_DENSE_ROW]: %g\n",lu->Control[UMFPACK_DENSE_ROW]);
295: PetscViewerASCIIPrintf(viewer," Control[UMFPACK_AMD_DENSE]: %g\n",lu->Control[UMFPACK_AMD_DENSE]);
296: PetscViewerASCIIPrintf(viewer," Control[UMFPACK_BLOCK_SIZE]: %g\n",lu->Control[UMFPACK_BLOCK_SIZE]);
297: PetscViewerASCIIPrintf(viewer," Control[UMFPACK_FIXQ]: %g\n",lu->Control[UMFPACK_FIXQ]);
298: PetscViewerASCIIPrintf(viewer," Control[UMFPACK_AGGRESSIVE]: %g\n",lu->Control[UMFPACK_AGGRESSIVE]);
300: /* Control parameters used by numeric factorization */
301: PetscViewerASCIIPrintf(viewer," Control[UMFPACK_PIVOT_TOLERANCE]: %g\n",lu->Control[UMFPACK_PIVOT_TOLERANCE]);
302: PetscViewerASCIIPrintf(viewer," Control[UMFPACK_SYM_PIVOT_TOLERANCE]: %g\n",lu->Control[UMFPACK_SYM_PIVOT_TOLERANCE]);
303: PetscViewerASCIIPrintf(viewer," Control[UMFPACK_SCALE]: %g\n",lu->Control[UMFPACK_SCALE]);
304: PetscViewerASCIIPrintf(viewer," Control[UMFPACK_ALLOC_INIT]: %g\n",lu->Control[UMFPACK_ALLOC_INIT]);
305: PetscViewerASCIIPrintf(viewer," Control[UMFPACK_DROPTOL]: %g\n",lu->Control[UMFPACK_DROPTOL]);
307: /* Control parameters used by solve */
308: PetscViewerASCIIPrintf(viewer," Control[UMFPACK_IRSTEP]: %g\n",lu->Control[UMFPACK_IRSTEP]);
310: /* mat ordering */
311: if (!lu->PetscMatOrdering) {
312: PetscViewerASCIIPrintf(viewer," Control[UMFPACK_ORDERING]: %s (not using the PETSc ordering)\n",UmfpackOrderingTypes[(int)lu->Control[UMFPACK_ORDERING]]);
313: }
315: return(0);
316: }
320: static PetscErrorCode MatView_UMFPACK(Mat A,PetscViewer viewer)
321: {
322: PetscErrorCode ierr;
323: PetscBool iascii;
324: PetscViewerFormat format;
327: MatView_SeqAIJ(A,viewer);
329: PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERASCII,&iascii);
330: if (iascii) {
331: PetscViewerGetFormat(viewer,&format);
332: if (format == PETSC_VIEWER_ASCII_INFO) {
333: MatFactorInfo_UMFPACK(A,viewer);
334: }
335: }
336: return(0);
337: }
339: EXTERN_C_BEGIN
342: PetscErrorCode MatFactorGetSolverPackage_seqaij_umfpack(Mat A,const MatSolverPackage *type)
343: {
345: *type = MATSOLVERUMFPACK;
346: return(0);
347: }
348: EXTERN_C_END
349:
351: /*MC
352: MATSOLVERUMFPACK = "umfpack" - A matrix type providing direct solvers (LU) for sequential matrices
353: via the external package UMFPACK.
355: ./configure --download-umfpack to install PETSc to use UMFPACK
357: Consult UMFPACK documentation for more information about the Control parameters
358: which correspond to the options database keys below.
360: Options Database Keys:
361: + -mat_umfpack_prl - UMFPACK print level: Control[UMFPACK_PRL]
362: . -mat_umfpack_strategy <AUTO> - (choose one of) AUTO UNSYMMETRIC SYMMETRIC 2BY2
363: . -mat_umfpack_dense_col <alpha_c> - UMFPACK dense column threshold: Control[UMFPACK_DENSE_COL]
364: . -mat_umfpack_dense_row <0.2> - Control[UMFPACK_DENSE_ROW]
365: . -mat_umfpack_amd_dense <10> - Control[UMFPACK_AMD_DENSE]
366: . -mat_umfpack_block_size <bs> - UMFPACK block size for BLAS-Level 3 calls: Control[UMFPACK_BLOCK_SIZE]
367: . -mat_umfpack_2by2_tolerance <0.01> - Control[UMFPACK_2BY2_TOLERANCE]
368: . -mat_umfpack_fixq <0> - Control[UMFPACK_FIXQ]
369: . -mat_umfpack_aggressive <1> - Control[UMFPACK_AGGRESSIVE]
370: . -mat_umfpack_pivot_tolerance <delta> - UMFPACK partial pivot tolerance: Control[UMFPACK_PIVOT_TOLERANCE]
371: . -mat_umfpack_sym_pivot_tolerance <0.001> - Control[UMFPACK_SYM_PIVOT_TOLERANCE]
372: . -mat_umfpack_scale <NONE> - (choose one of) NONE SUM MAX
373: . -mat_umfpack_alloc_init <delta> - UMFPACK factorized matrix allocation modifier: Control[UMFPACK_ALLOC_INIT]
374: . -mat_umfpack_droptol <0> - Control[UMFPACK_DROPTOL]
375: - -mat_umfpack_irstep <maxit> - UMFPACK maximum number of iterative refinement steps: Control[UMFPACK_IRSTEP]
377: Level: beginner
379: .seealso: PCLU, MATSOLVERSUPERLU, MATSOLVERMUMPS, MATSOLVERSPOOLES, PCFactorSetMatSolverPackage(), MatSolverPackage
380: M*/
381: EXTERN_C_BEGIN
384: PetscErrorCode MatGetFactor_seqaij_umfpack(Mat A,MatFactorType ftype,Mat *F)
385: {
386: Mat B;
387: Mat_UMFPACK *lu;
389: PetscInt m=A->rmap->n,n=A->cmap->n,idx;
391: const char *strategy[]={"AUTO","UNSYMMETRIC","SYMMETRIC"},
392: *scale[]={"NONE","SUM","MAX"};
393: PetscBool flg;
394:
396: /* Create the factorization matrix F */
397: MatCreate(((PetscObject)A)->comm,&B);
398: MatSetSizes(B,PETSC_DECIDE,PETSC_DECIDE,m,n);
399: MatSetType(B,((PetscObject)A)->type_name);
400: MatSeqAIJSetPreallocation(B,0,PETSC_NULL);
401: PetscNewLog(B,Mat_UMFPACK,&lu);
402: B->spptr = lu;
403: B->ops->lufactorsymbolic = MatLUFactorSymbolic_UMFPACK;
404: B->ops->destroy = MatDestroy_UMFPACK;
405: B->ops->view = MatView_UMFPACK;
406: PetscObjectComposeFunctionDynamic((PetscObject)B,"MatFactorGetSolverPackage_C","MatFactorGetSolverPackage_seqaij_umfpack",MatFactorGetSolverPackage_seqaij_umfpack);
407: B->factortype = MAT_FACTOR_LU;
408: B->assembled = PETSC_TRUE; /* required by -ksp_view */
409: B->preallocated = PETSC_TRUE;
410:
411: /* initializations */
412: /* ------------------------------------------------*/
413: /* get the default control parameters */
414: umfpack_UMF_defaults(lu->Control);
415: lu->perm_c = PETSC_NULL; /* use defaul UMFPACK col permutation */
416: lu->Control[UMFPACK_IRSTEP] = 0; /* max num of iterative refinement steps to attempt */
418: PetscOptionsBegin(((PetscObject)A)->comm,((PetscObject)A)->prefix,"UMFPACK Options","Mat");
419: /* Control parameters used by reporting routiones */
420: PetscOptionsReal("-mat_umfpack_prl","Control[UMFPACK_PRL]","None",lu->Control[UMFPACK_PRL],&lu->Control[UMFPACK_PRL],PETSC_NULL);
422: /* Control parameters for symbolic factorization */
423: PetscOptionsEList("-mat_umfpack_strategy","ordering and pivoting strategy","None",strategy,3,strategy[0],&idx,&flg);
424: if (flg) {
425: switch (idx){
426: case 0: lu->Control[UMFPACK_STRATEGY] = UMFPACK_STRATEGY_AUTO; break;
427: case 1: lu->Control[UMFPACK_STRATEGY] = UMFPACK_STRATEGY_UNSYMMETRIC; break;
428: case 2: lu->Control[UMFPACK_STRATEGY] = UMFPACK_STRATEGY_SYMMETRIC; break;
429: }
430: }
431: PetscOptionsEList("-mat_umfpack_ordering","Internal ordering method","None",UmfpackOrderingTypes,sizeof UmfpackOrderingTypes/sizeof UmfpackOrderingTypes[0],UmfpackOrderingTypes[(int)lu->Control[UMFPACK_ORDERING]],&idx,&flg);
432: if (flg) lu->Control[UMFPACK_ORDERING] = (int)idx;
433: PetscOptionsReal("-mat_umfpack_dense_col","Control[UMFPACK_DENSE_COL]","None",lu->Control[UMFPACK_DENSE_COL],&lu->Control[UMFPACK_DENSE_COL],PETSC_NULL);
434: PetscOptionsReal("-mat_umfpack_dense_row","Control[UMFPACK_DENSE_ROW]","None",lu->Control[UMFPACK_DENSE_ROW],&lu->Control[UMFPACK_DENSE_ROW],PETSC_NULL);
435: PetscOptionsReal("-mat_umfpack_amd_dense","Control[UMFPACK_AMD_DENSE]","None",lu->Control[UMFPACK_AMD_DENSE],&lu->Control[UMFPACK_AMD_DENSE],PETSC_NULL);
436: PetscOptionsReal("-mat_umfpack_block_size","Control[UMFPACK_BLOCK_SIZE]","None",lu->Control[UMFPACK_BLOCK_SIZE],&lu->Control[UMFPACK_BLOCK_SIZE],PETSC_NULL);
437: PetscOptionsReal("-mat_umfpack_fixq","Control[UMFPACK_FIXQ]","None",lu->Control[UMFPACK_FIXQ],&lu->Control[UMFPACK_FIXQ],PETSC_NULL);
438: PetscOptionsReal("-mat_umfpack_aggressive","Control[UMFPACK_AGGRESSIVE]","None",lu->Control[UMFPACK_AGGRESSIVE],&lu->Control[UMFPACK_AGGRESSIVE],PETSC_NULL);
440: /* Control parameters used by numeric factorization */
441: PetscOptionsReal("-mat_umfpack_pivot_tolerance","Control[UMFPACK_PIVOT_TOLERANCE]","None",lu->Control[UMFPACK_PIVOT_TOLERANCE],&lu->Control[UMFPACK_PIVOT_TOLERANCE],PETSC_NULL);
442: PetscOptionsReal("-mat_umfpack_sym_pivot_tolerance","Control[UMFPACK_SYM_PIVOT_TOLERANCE]","None",lu->Control[UMFPACK_SYM_PIVOT_TOLERANCE],&lu->Control[UMFPACK_SYM_PIVOT_TOLERANCE],PETSC_NULL);
443: PetscOptionsEList("-mat_umfpack_scale","Control[UMFPACK_SCALE]","None",scale,3,scale[0],&idx,&flg);
444: if (flg) {
445: switch (idx){
446: case 0: lu->Control[UMFPACK_SCALE] = UMFPACK_SCALE_NONE; break;
447: case 1: lu->Control[UMFPACK_SCALE] = UMFPACK_SCALE_SUM; break;
448: case 2: lu->Control[UMFPACK_SCALE] = UMFPACK_SCALE_MAX; break;
449: }
450: }
451: PetscOptionsReal("-mat_umfpack_alloc_init","Control[UMFPACK_ALLOC_INIT]","None",lu->Control[UMFPACK_ALLOC_INIT],&lu->Control[UMFPACK_ALLOC_INIT],PETSC_NULL);
452: PetscOptionsReal("-mat_umfpack_front_alloc_init","Control[UMFPACK_FRONT_ALLOC_INIT]","None",lu->Control[UMFPACK_FRONT_ALLOC_INIT],&lu->Control[UMFPACK_ALLOC_INIT],PETSC_NULL);
453: PetscOptionsReal("-mat_umfpack_droptol","Control[UMFPACK_DROPTOL]","None",lu->Control[UMFPACK_DROPTOL],&lu->Control[UMFPACK_DROPTOL],PETSC_NULL);
455: /* Control parameters used by solve */
456: PetscOptionsReal("-mat_umfpack_irstep","Control[UMFPACK_IRSTEP]","None",lu->Control[UMFPACK_IRSTEP],&lu->Control[UMFPACK_IRSTEP],PETSC_NULL);
457:
458: /* use Petsc mat ordering (note: size is for the transpose, and PETSc r = Umfpack perm_c) */
459: PetscOptionsHasName(PETSC_NULL,"-pc_factor_mat_ordering_type",&lu->PetscMatOrdering);
460: PetscOptionsEnd();
461: *F = B;
462: return(0);
463: }
464: EXTERN_C_END