Actual source code: primme.c
1: /*
2: This file implements a wrapper to the PRIMME package
4: - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
5: SLEPc - Scalable Library for Eigenvalue Problem Computations
6: Copyright (c) 2002-2013, Universitat Politecnica de Valencia, Spain
8: This file is part of SLEPc.
10: SLEPc is free software: you can redistribute it and/or modify it under the
11: terms of version 3 of the GNU Lesser General Public License as published by
12: the Free Software Foundation.
14: SLEPc is distributed in the hope that it will be useful, but WITHOUT ANY
15: WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
16: FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
17: more details.
19: You should have received a copy of the GNU Lesser General Public License
20: along with SLEPc. If not, see <http://www.gnu.org/licenses/>.
21: - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
22: */
24: #include <slepc-private/epsimpl.h> /*I "slepceps.h" I*/
25: #include <slepc-private/stimpl.h>
27: PetscErrorCode EPSSolve_PRIMME(EPS);
29: EXTERN_C_BEGIN
30: #include <primme.h>
31: EXTERN_C_END
33: typedef struct {
34: primme_params primme; /* param struc */
35: primme_preset_method method; /* primme method */
36: Mat A; /* problem matrix */
37: EPS eps; /* EPS current context */
38: KSP ksp; /* linear solver and preconditioner */
39: Vec x,y; /* auxiliary vectors */
40: PetscReal target; /* a copy of eps's target */
41: } EPS_PRIMME;
43: EPSPRIMMEMethod methodN[] = {
44: EPS_PRIMME_DYNAMIC,
45: EPS_PRIMME_DEFAULT_MIN_TIME,
46: EPS_PRIMME_DEFAULT_MIN_MATVECS,
47: EPS_PRIMME_ARNOLDI,
48: EPS_PRIMME_GD,
49: EPS_PRIMME_GD_PLUSK,
50: EPS_PRIMME_GD_OLSEN_PLUSK,
51: EPS_PRIMME_JD_OLSEN_PLUSK,
52: EPS_PRIMME_RQI,
53: EPS_PRIMME_JDQR,
54: EPS_PRIMME_JDQMR,
55: EPS_PRIMME_JDQMR_ETOL,
56: EPS_PRIMME_SUBSPACE_ITERATION,
57: EPS_PRIMME_LOBPCG_ORTHOBASIS,
58: EPS_PRIMME_LOBPCG_ORTHOBASISW
59: };
61: static void multMatvec_PRIMME(void *in,void *out,int *blockSize,primme_params *primme);
62: static void applyPreconditioner_PRIMME(void *in,void *out,int *blockSize,struct primme_params *primme);
64: static void par_GlobalSumDouble(void *sendBuf,void *recvBuf,int *count,primme_params *primme)
65: {
67: MPI_Allreduce((double*)sendBuf,(double*)recvBuf,*count,MPI_DOUBLE,MPI_SUM,primme->commInfo);CHKERRABORT(primme->commInfo,ierr);
68: }
72: PetscErrorCode EPSSetUp_PRIMME(EPS eps)
73: {
75: PetscMPIInt numProcs,procID;
76: EPS_PRIMME *ops = (EPS_PRIMME*)eps->data;
77: primme_params *primme = &ops->primme;
78: PetscBool t;
81: MPI_Comm_size(PetscObjectComm((PetscObject)eps),&numProcs);
82: MPI_Comm_rank(PetscObjectComm((PetscObject)eps),&procID);
84: /* Check some constraints and set some default values */
85: if (!eps->max_it) eps->max_it = PetscMax(1000,eps->n);
86: STGetOperators(eps->st,0,&ops->A);
87: if (!ops->A) SETERRQ(PetscObjectComm((PetscObject)eps),PETSC_ERR_ARG_WRONGSTATE,"The problem matrix has to be specified first");
88: if (!eps->ishermitian) SETERRQ(PetscObjectComm((PetscObject)eps),PETSC_ERR_SUP,"PRIMME is only available for Hermitian problems");
89: if (eps->isgeneralized) SETERRQ(PetscObjectComm((PetscObject)eps),PETSC_ERR_SUP,"PRIMME is not available for generalized problems");
90: if (eps->arbitrary) SETERRQ(PetscObjectComm((PetscObject)eps),PETSC_ERR_SUP,"Arbitrary selection of eigenpairs not supported in this solver");
91: if (!eps->which) eps->which = EPS_LARGEST_REAL;
92: if (eps->converged != EPSConvergedAbsolute) SETERRQ(PetscObjectComm((PetscObject)eps),PETSC_ERR_SUP,"PRIMME only supports absolute convergence test");
94: /* Change the default sigma to inf if necessary */
95: if (eps->which == EPS_LARGEST_MAGNITUDE || eps->which == EPS_LARGEST_REAL || eps->which == EPS_LARGEST_IMAGINARY) {
96: STSetDefaultShift(eps->st,3e300);
97: }
99: /* Avoid setting the automatic shift when a target is set */
100: STSetDefaultShift(eps->st,0.0);
102: STSetUp(eps->st);
103: PetscObjectTypeCompare((PetscObject)eps->st,STPRECOND,&t);
104: if (!t) SETERRQ(PetscObjectComm((PetscObject)eps),PETSC_ERR_SUP,"PRIMME only works with STPRECOND");
106: /* Transfer SLEPc options to PRIMME options */
107: primme->n = eps->n;
108: primme->nLocal = eps->nloc;
109: primme->numEvals = eps->nev;
110: primme->matrix = ops;
111: primme->commInfo = PetscObjectComm((PetscObject)eps);
112: primme->maxMatvecs = eps->max_it;
113: primme->eps = eps->tol==PETSC_DEFAULT?SLEPC_DEFAULT_TOL:eps->tol;
114: primme->numProcs = numProcs;
115: primme->procID = procID;
116: primme->printLevel = 0;
117: primme->correctionParams.precondition = 1;
119: if (!eps->which) eps->which = EPS_LARGEST_REAL;
120: switch (eps->which) {
121: case EPS_LARGEST_REAL:
122: primme->target = primme_largest;
123: break;
124: case EPS_SMALLEST_REAL:
125: primme->target = primme_smallest;
126: break;
127: case EPS_TARGET_MAGNITUDE:
128: case EPS_TARGET_REAL:
129: primme->target = primme_closest_abs;
130: primme->numTargetShifts = 1;
131: ops->target = PetscRealPart(eps->target);
132: primme->targetShifts = &ops->target;
133: break;
134: default:
135: SETERRQ(PetscObjectComm((PetscObject)eps),PETSC_ERR_SUP,"'which' value does not supported by PRIMME");
136: break;
137: }
139: if (primme_set_method(ops->method,primme) < 0) SETERRQ(PetscObjectComm((PetscObject)eps),PETSC_ERR_SUP,"PRIMME method not valid");
141: /* If user sets ncv, maxBasisSize is modified. If not, ncv is set as maxBasisSize */
142: if (eps->ncv) primme->maxBasisSize = eps->ncv;
143: else eps->ncv = primme->maxBasisSize;
144: if (eps->ncv < eps->nev+primme->maxBlockSize) SETERRQ(PetscObjectComm((PetscObject)eps),PETSC_ERR_SUP,"PRIMME needs ncv >= nev+maxBlockSize");
145: if (eps->mpd) { PetscInfo(eps,"Warning: parameter mpd ignored\n"); }
147: if (eps->extraction) { PetscInfo(eps,"Warning: extraction type ignored\n"); }
149: /* Set workspace */
150: EPSAllocateSolution(eps);
152: /* Setup the preconditioner */
153: ops->eps = eps;
154: if (primme->correctionParams.precondition) {
155: STGetKSP(eps->st,&ops->ksp);
156: PetscObjectTypeCompare((PetscObject)ops->ksp,KSPPREONLY,&t);
157: if (!t) SETERRQ(PetscObjectComm((PetscObject)eps),PETSC_ERR_SUP,"PRIMME only works with KSPPREONLY");
158: primme->preconditioner = NULL;
159: primme->applyPreconditioner = applyPreconditioner_PRIMME;
160: }
162: /* Prepare auxiliary vectors */
163: VecCreateMPIWithArray(PetscObjectComm((PetscObject)eps),1,eps->nloc,eps->n,NULL,&ops->x);
164: VecCreateMPIWithArray(PetscObjectComm((PetscObject)eps),1,eps->nloc,eps->n,NULL,&ops->y);
165: PetscLogObjectParent(eps,ops->x);
166: PetscLogObjectParent(eps,ops->y);
168: /* dispatch solve method */
169: if (eps->leftvecs) SETERRQ(PetscObjectComm((PetscObject)eps),PETSC_ERR_SUP,"Left vectors not supported in this solver");
170: eps->ops->solve = EPSSolve_PRIMME;
171: return(0);
172: }
176: PetscErrorCode EPSSolve_PRIMME(EPS eps)
177: {
179: EPS_PRIMME *ops = (EPS_PRIMME*)eps->data;
180: PetscScalar *a;
181: #if defined(PETSC_USE_COMPLEX)
182: PetscInt i;
183: PetscReal *evals;
184: #endif
187: /* Reset some parameters left from previous runs */
188: ops->primme.aNorm = 1.0;
189: ops->primme.initSize = eps->nini;
190: ops->primme.iseed[0] = -1;
192: /* Call PRIMME solver */
193: VecGetArray(eps->V[0],&a);
194: #if !defined(PETSC_USE_COMPLEX)
195: dprimme(eps->eigr,a,eps->errest,&ops->primme);
196: #else
197: /* PRIMME returns real eigenvalues, but SLEPc works with complex ones */
198: PetscMalloc(eps->ncv*sizeof(PetscReal),&evals);
199: zprimme(evals,(Complex_Z*)a,eps->errest,&ops->primme);
200: for (i=0;i<eps->ncv;i++)
201: eps->eigr[i] = evals[i];
202: PetscFree(evals);
203: #endif
204: VecRestoreArray(eps->V[0],&a);
206: switch (ierr) {
207: case 0: /* Successful */
208: break;
209: case -1:
210: SETERRQ(PetscObjectComm((PetscObject)eps),PETSC_ERR_SUP,"PRIMME: Failed to open output file");
211: break;
212: case -2:
213: SETERRQ(PetscObjectComm((PetscObject)eps),PETSC_ERR_SUP,"PRIMME: Insufficient integer or real workspace allocated");
214: break;
215: case -3:
216: SETERRQ(PetscObjectComm((PetscObject)eps),PETSC_ERR_SUP,"PRIMME: main_iter encountered a problem");
217: break;
218: default:
219: SETERRQ(PetscObjectComm((PetscObject)eps),PETSC_ERR_SUP,"PRIMME: some parameters wrong configured");
220: break;
221: }
223: eps->nconv = ops->primme.initSize >= 0 ? ops->primme.initSize : 0;
224: eps->reason = eps->ncv >= eps->nev ? EPS_CONVERGED_TOL: EPS_DIVERGED_ITS;
225: eps->its = ops->primme.stats.numOuterIterations;
226: eps->st->applys = ops->primme.stats.numMatvecs;
227: return(0);
228: }
232: static void multMatvec_PRIMME(void *in,void *out,int *blockSize,primme_params *primme)
233: {
235: PetscInt i,N = primme->n;
236: EPS_PRIMME *ops = (EPS_PRIMME*)primme->matrix;
237: Vec x = ops->x,y = ops->y;
238: Mat A = ops->A;
241: for (i=0;i<*blockSize;i++) {
242: /* build vectors using 'in' an 'out' workspace */
243: VecPlaceArray(x,(PetscScalar*)in+N*i);CHKERRABORT(PetscObjectComm((PetscObject)A),ierr);
244: VecPlaceArray(y,(PetscScalar*)out+N*i);CHKERRABORT(PetscObjectComm((PetscObject)A),ierr);
246: MatMult(A,x,y);CHKERRABORT(PetscObjectComm((PetscObject)A),ierr);
248: VecResetArray(x);CHKERRABORT(PetscObjectComm((PetscObject)A),ierr);
249: VecResetArray(y);CHKERRABORT(PetscObjectComm((PetscObject)A),ierr);
250: }
251: PetscFunctionReturnVoid();
252: }
256: static void applyPreconditioner_PRIMME(void *in,void *out,int *blockSize,struct primme_params *primme)
257: {
259: PetscInt i,N = primme->n,lits;
260: EPS_PRIMME *ops = (EPS_PRIMME*)primme->matrix;
261: Vec x = ops->x,y = ops->y;
264: for (i=0;i<*blockSize;i++) {
265: /* build vectors using 'in' an 'out' workspace */
266: VecPlaceArray(x,(PetscScalar*)in+N*i);CHKERRABORT(PetscObjectComm((PetscObject)ops->ksp),ierr);
267: VecPlaceArray(y,(PetscScalar*)out+N*i);CHKERRABORT(PetscObjectComm((PetscObject)ops->ksp),ierr);
269: KSPSolve(ops->ksp,x,y);CHKERRABORT(PetscObjectComm((PetscObject)ops->ksp),ierr);
270: KSPGetIterationNumber(ops->ksp,&lits);CHKERRABORT(PetscObjectComm((PetscObject)ops->ksp),ierr);
271: ops->eps->st->lineariterations+= lits;
273: VecResetArray(x);CHKERRABORT(PetscObjectComm((PetscObject)ops->ksp),ierr);
274: VecResetArray(y);CHKERRABORT(PetscObjectComm((PetscObject)ops->ksp),ierr);
275: }
276: PetscFunctionReturnVoid();
277: }
281: PetscErrorCode EPSReset_PRIMME(EPS eps)
282: {
284: EPS_PRIMME *ops = (EPS_PRIMME*)eps->data;
287: primme_Free(&ops->primme);
288: VecDestroy(&ops->x);
289: VecDestroy(&ops->y);
290: EPSFreeSolution(eps);
291: return(0);
292: }
296: PetscErrorCode EPSDestroy_PRIMME(EPS eps)
297: {
301: PetscFree(eps->data);
302: PetscObjectComposeFunction((PetscObject)eps,"EPSPRIMMESetBlockSize_C",NULL);
303: PetscObjectComposeFunction((PetscObject)eps,"EPSPRIMMESetMethod_C",NULL);
304: PetscObjectComposeFunction((PetscObject)eps,"EPSPRIMMEGetBlockSize_C",NULL);
305: PetscObjectComposeFunction((PetscObject)eps,"EPSPRIMMEGetMethod_C",NULL);
306: return(0);
307: }
311: PetscErrorCode EPSView_PRIMME(EPS eps,PetscViewer viewer)
312: {
313: PetscErrorCode ierr;
314: PetscBool isascii;
315: primme_params *primme = &((EPS_PRIMME*)eps->data)->primme;
316: EPSPRIMMEMethod methodn;
317: PetscMPIInt rank;
320: PetscObjectTypeCompare((PetscObject)viewer,PETSCVIEWERASCII,&isascii);
321: if (isascii) {
322: PetscViewerASCIIPrintf(viewer," PRIMME: block size=%d\n",primme->maxBlockSize);
323: EPSPRIMMEGetMethod(eps,&methodn);
324: PetscViewerASCIIPrintf(viewer," PRIMME: solver method: %s\n",EPSPRIMMEMethods[methodn]);
326: /* Display PRIMME params */
327: MPI_Comm_rank(PetscObjectComm((PetscObject)eps),&rank);
328: if (!rank) primme_display_params(*primme);
329: }
330: return(0);
331: }
335: PetscErrorCode EPSSetFromOptions_PRIMME(EPS eps)
336: {
337: PetscErrorCode ierr;
338: EPS_PRIMME *ctx = (EPS_PRIMME*)eps->data;
339: PetscInt bs;
340: EPSPRIMMEMethod meth;
341: PetscBool flg;
342: KSP ksp;
345: PetscOptionsHead("EPS PRIMME Options");
346: PetscOptionsInt("-eps_primme_block_size","Maximum block size","EPSPRIMMESetBlockSize",ctx->primme.maxBlockSize,&bs,&flg);
347: if (flg) {
348: EPSPRIMMESetBlockSize(eps,bs);
349: }
350: PetscOptionsEnum("-eps_primme_method","Method for solving the eigenproblem","EPSPRIMMESetMethod",EPSPRIMMEMethods,(PetscEnum)ctx->method,(PetscEnum*)&meth,&flg);
351: if (flg) {
352: EPSPRIMMESetMethod(eps,meth);
353: }
355: /* Set STPrecond as the default ST */
356: if (!((PetscObject)eps->st)->type_name) {
357: STSetType(eps->st,STPRECOND);
358: }
359: STPrecondSetKSPHasMat(eps->st,PETSC_TRUE);
361: /* Set the default options of the KSP */
362: STGetKSP(eps->st,&ksp);
363: if (!((PetscObject)ksp)->type_name) {
364: KSPSetType(ksp,KSPPREONLY);
365: }
366: PetscOptionsTail();
367: return(0);
368: }
372: static PetscErrorCode EPSPRIMMESetBlockSize_PRIMME(EPS eps,PetscInt bs)
373: {
374: EPS_PRIMME *ops = (EPS_PRIMME*)eps->data;
377: if (bs == PETSC_DEFAULT) ops->primme.maxBlockSize = 1;
378: else if (bs <= 0) SETERRQ(PetscObjectComm((PetscObject)eps),PETSC_ERR_ARG_OUTOFRANGE,"PRIMME: block size must be positive");
379: else ops->primme.maxBlockSize = bs;
380: return(0);
381: }
385: /*@
386: EPSPRIMMESetBlockSize - The maximum block size the code will try to use.
387: The user should set
388: this based on the architecture specifics of the target computer,
389: as well as any a priori knowledge of multiplicities. The code does
390: NOT require BlockSize > 1 to find multiple eigenvalues. For some
391: methods, keeping BlockSize = 1 yields the best overall performance.
393: Collective on EPS
395: Input Parameters:
396: + eps - the eigenproblem solver context
397: - bs - block size
399: Options Database Key:
400: . -eps_primme_block_size - Sets the max allowed block size value
402: Notes:
403: If the block size is not set, the value established by primme_initialize
404: is used.
406: Level: advanced
407: .seealso: EPSPRIMMEGetBlockSize()
408: @*/
409: PetscErrorCode EPSPRIMMESetBlockSize(EPS eps,PetscInt bs)
410: {
416: PetscTryMethod(eps,"EPSPRIMMESetBlockSize_C",(EPS,PetscInt),(eps,bs));
417: return(0);
418: }
422: static PetscErrorCode EPSPRIMMEGetBlockSize_PRIMME(EPS eps,PetscInt *bs)
423: {
424: EPS_PRIMME *ops = (EPS_PRIMME*)eps->data;
427: if (bs) *bs = ops->primme.maxBlockSize;
428: return(0);
429: }
433: /*@
434: EPSPRIMMEGetBlockSize - Get the maximum block size the code will try to use.
436: Collective on EPS
438: Input Parameters:
439: . eps - the eigenproblem solver context
441: Output Parameters:
442: . bs - returned block size
444: Level: advanced
445: .seealso: EPSPRIMMESetBlockSize()
446: @*/
447: PetscErrorCode EPSPRIMMEGetBlockSize(EPS eps,PetscInt *bs)
448: {
453: PetscTryMethod(eps,"EPSPRIMMEGetBlockSize_C",(EPS,PetscInt*),(eps,bs));
454: return(0);
455: }
459: static PetscErrorCode EPSPRIMMESetMethod_PRIMME(EPS eps,EPSPRIMMEMethod method)
460: {
461: EPS_PRIMME *ops = (EPS_PRIMME*)eps->data;
464: if (method == PETSC_DEFAULT) ops->method = DEFAULT_MIN_TIME;
465: else ops->method = (primme_preset_method)method;
466: return(0);
467: }
471: /*@
472: EPSPRIMMESetMethod - Sets the method for the PRIMME library.
474: Collective on EPS
476: Input Parameters:
477: + eps - the eigenproblem solver context
478: - method - method that will be used by PRIMME. It must be one of:
479: EPS_PRIMME_DYNAMIC, EPS_PRIMME_DEFAULT_MIN_TIME(EPS_PRIMME_JDQMR_ETOL),
480: EPS_PRIMME_DEFAULT_MIN_MATVECS(EPS_PRIMME_GD_OLSEN_PLUSK), EPS_PRIMME_ARNOLDI,
481: EPS_PRIMME_GD, EPS_PRIMME_GD_PLUSK, EPS_PRIMME_GD_OLSEN_PLUSK,
482: EPS_PRIMME_JD_OLSEN_PLUSK, EPS_PRIMME_RQI, EPS_PRIMME_JDQR, EPS_PRIMME_JDQMR,
483: EPS_PRIMME_JDQMR_ETOL, EPS_PRIMME_SUBSPACE_ITERATION,
484: EPS_PRIMME_LOBPCG_ORTHOBASIS, EPS_PRIMME_LOBPCG_ORTHOBASISW
486: Options Database Key:
487: . -eps_primme_set_method - Sets the method for the PRIMME library.
489: Note:
490: If not set, the method defaults to EPS_PRIMME_DEFAULT_MIN_TIME.
492: Level: advanced
494: .seealso: EPSPRIMMEGetMethod(), EPSPRIMMEMethod
495: @*/
496: PetscErrorCode EPSPRIMMESetMethod(EPS eps,EPSPRIMMEMethod method)
497: {
503: PetscTryMethod(eps,"EPSPRIMMESetMethod_C",(EPS,EPSPRIMMEMethod),(eps,method));
504: return(0);
505: }
509: static PetscErrorCode EPSPRIMMEGetMethod_PRIMME(EPS eps,EPSPRIMMEMethod *method)
510: {
511: EPS_PRIMME *ops = (EPS_PRIMME*)eps->data;
514: if (method) *method = (EPSPRIMMEMethod)ops->method;
515: return(0);
516: }
520: /*@C
521: EPSPRIMMEGetMethod - Gets the method for the PRIMME library.
523: Mon Collective on EPS
525: Input Parameters:
526: . eps - the eigenproblem solver context
528: Output Parameters:
529: . method - method that will be used by PRIMME. It must be one of:
530: EPS_PRIMME_DYNAMIC, EPS_PRIMME_DEFAULT_MIN_TIME(EPS_PRIMME_JDQMR_ETOL),
531: EPS_PRIMME_DEFAULT_MIN_MATVECS(EPS_PRIMME_GD_OLSEN_PLUSK), EPS_PRIMME_ARNOLDI,
532: EPS_PRIMME_GD, EPS_PRIMME_GD_PLUSK, EPS_PRIMME_GD_OLSEN_PLUSK,
533: EPS_PRIMME_JD_OLSEN_PLUSK, EPS_PRIMME_RQI, EPS_PRIMME_JDQR, EPS_PRIMME_JDQMR,
534: EPS_PRIMME_JDQMR_ETOL, EPS_PRIMME_SUBSPACE_ITERATION,
535: EPS_PRIMME_LOBPCG_ORTHOBASIS, EPS_PRIMME_LOBPCG_ORTHOBASISW
537: Level: advanced
539: .seealso: EPSPRIMMESetMethod(), EPSPRIMMEMethod
540: @*/
541: PetscErrorCode EPSPRIMMEGetMethod(EPS eps,EPSPRIMMEMethod *method)
542: {
547: PetscTryMethod(eps,"EPSPRIMMEGetMethod_C",(EPS,EPSPRIMMEMethod*),(eps,method));
548: return(0);
549: }
553: PETSC_EXTERN PetscErrorCode EPSCreate_PRIMME(EPS eps)
554: {
556: EPS_PRIMME *primme;
559: PetscNewLog(eps,EPS_PRIMME,&primme);
560: eps->data = (void*)primme;
561: eps->ops->setup = EPSSetUp_PRIMME;
562: eps->ops->setfromoptions = EPSSetFromOptions_PRIMME;
563: eps->ops->destroy = EPSDestroy_PRIMME;
564: eps->ops->reset = EPSReset_PRIMME;
565: eps->ops->view = EPSView_PRIMME;
566: eps->ops->backtransform = EPSBackTransform_Default;
567: eps->ops->computevectors = EPSComputeVectors_Default;
569: primme_initialize(&primme->primme);
570: primme->primme.matrixMatvec = multMatvec_PRIMME;
571: primme->primme.globalSumDouble = par_GlobalSumDouble;
572: primme->method = (primme_preset_method)EPS_PRIMME_DEFAULT_MIN_TIME;
574: PetscObjectComposeFunction((PetscObject)eps,"EPSPRIMMESetBlockSize_C",EPSPRIMMESetBlockSize_PRIMME);
575: PetscObjectComposeFunction((PetscObject)eps,"EPSPRIMMESetMethod_C",EPSPRIMMESetMethod_PRIMME);
576: PetscObjectComposeFunction((PetscObject)eps,"EPSPRIMMEGetBlockSize_C",EPSPRIMMEGetBlockSize_PRIMME);
577: PetscObjectComposeFunction((PetscObject)eps,"EPSPRIMMEGetMethod_C",EPSPRIMMEGetMethod_PRIMME);
578: return(0);
579: }