/*
This file implements a wrapper to the PRIMME library
*/
#include "src/eps/epsimpl.h"
EXTERN_C_BEGIN
#include "primme.h"
EXTERN_C_END
#ifndef PETSC_USE_COMPLEX
typedef double PRIMMEScalar;
#else
typedef Complex_Z PRIMMEScalar;
#endif
typedef struct {
primme_params primme; /* param struc */
primme_preset_method method; /* primme method */
Mat A; /* problem matrix */
Vec M; /* store reciprocal A diagonal */
} EPS_PRIMME;
void multMatvec_PRIMME(PRIMMEScalar *in, PRIMMEScalar *out, int *blockSize, primme_params *primme);
void applyPreconditioner_PRIMME(PRIMMEScalar *in, PRIMMEScalar *out, int *blockSize, struct primme_params *primme);
void par_GlobalSumDouble(void *sendBuf, void *recvBuf, int *count, primme_params *primme);
void par_GlobalSumDouble(void *sendBuf, void *recvBuf, int *count, primme_params *primme) {
MPI_Allreduce((double*)sendBuf, (double*)recvBuf, *count, MPI_DOUBLE, MPI_SUM, PETSC_COMM_WORLD);
}
#undef __FUNCT__
#define __FUNCT__ "EPSSetUp_PRIMME"
PetscErrorCode EPSSetUp_PRIMME(EPS eps)
{
PetscErrorCode ierr;
PetscInt N, n, numProcs, procID;
PetscScalar *a;
Mat B;
EPS_PRIMME *ops = (EPS_PRIMME *)eps->data;
primme_params *primme = &(((EPS_PRIMME *)eps->data)->primme);
PetscFunctionBegin;
MPI_Comm_size(PETSC_COMM_WORLD, &numProcs);
MPI_Comm_rank(PETSC_COMM_WORLD, &procID);
/* Check some constrains and set some default values */
ierr = VecGetSize(eps->vec_initial,&N);CHKERRQ(ierr);
ierr = VecGetLocalSize(eps->vec_initial,&n);CHKERRQ(ierr);
if (!eps->ncv) eps->ncv = eps->nev+primme->maxBlockSize;
if (eps->ncv < eps->nev+primme->maxBlockSize)
SETERRQ(PETSC_ERR_SUP,"PRIMME needs ncv >= nev+maxBlockSize");
if (!eps->max_it) eps->max_it = PetscMax(100,N);
if (!eps->tol) eps->tol = 1.e-7;
ierr = STGetOperators(eps->OP, &ops->A, &B);
if (!ops->A) SETERRQ(PETSC_ERR_SUP,"PRIMME needs a matrix A");
if (B) SETERRQ(PETSC_ERR_SUP,"PRIMME doesn't solve generalized problem");
if (!eps->ishermitian)
SETERRQ(PETSC_ERR_SUP,"PRIMME was only built for Hermitian problems");
/* Transfer SLEPc options to PRIMME options */
primme->n = N;
primme->nLocal = n;
primme->numEvals = eps->nev;
primme->matrix = &ops->A;
primme->initSize = 1;
/* primme->maxBasisSize = eps->ncv; */
primme->maxMatvecs = eps->max_it;
primme->eps = eps->tol;
primme->numProcs = numProcs;
primme->procID = procID;
primme->globalSumDouble = par_GlobalSumDouble;
switch(eps->which) {
case EPS_LARGEST_MAGNITUDE:
primme->target = primme_largest;
break;
case EPS_SMALLEST_MAGNITUDE:
primme->target = primme_smallest;
break;
default:
SETERRQ(PETSC_ERR_SUP,"PRIMME only allows EPS_LARGEST_MAGNITUDE and EPS_SMALLEST_MAGNITUDE for 'which' value");
break;
}
primme_set_method(ops->method, primme);
/* Set workspace */
ierr = EPSAllocateSolutionContiguous(eps);CHKERRQ(ierr);
/* Copy vec_initial to V[0] vector */
ierr = VecGetArray(eps->vec_initial, &a); CHKERRQ(ierr);
ierr = VecCopy(eps->vec_initial, eps->V[0]); CHKERRQ(ierr);
ierr = VecRestoreArray(eps->vec_initial, &a); CHKERRQ(ierr);
if (primme->correctionParams.precondition == 1 ) {
/* Calc reciprocal A diagonal */
ierr = VecDuplicate(eps->vec_initial, &ops->M); CHKERRQ(ierr);
ierr = MatGetDiagonal(ops->A, ops->M); CHKERRQ(ierr);
ierr = VecReciprocal(ops->M); CHKERRQ(ierr);
primme->preconditioner = &ops->M;
primme->applyPreconditioner = applyPreconditioner_PRIMME;
}
PetscFunctionReturn(0);
}
#undef __FUNCT__
#define __FUNCT__ "EPSSolve_PRIMME"
PetscErrorCode EPSSolve_PRIMME(EPS eps)
{
PetscErrorCode ierr;
EPS_PRIMME *ops = (EPS_PRIMME *)eps->data;
PetscScalar *a;
#ifdef PETSC_USE_COMPLEX
int i;
#endif
PetscFunctionBegin;
/* Call PRIMME solver */
ierr = VecGetArray(eps->V[0], &a); CHKERRQ(ierr);
#ifndef PETSC_USE_COMPLEX
ierr = dprimme(eps->eigr, a, eps->errest, &ops->primme);
#else
/* In order to optimize memory, we are going to use eps->eigr and eps->eigr like a (double*) */
ierr = zprimme((double*)eps->eigr, (Complex_Z*)a, (double*)eps->errest, &ops->primme);
#endif
ierr = VecRestoreArray(eps->V[0], &a); CHKERRQ(ierr);
switch(ierr) {
case 0: /* Successful */
break;
case -1:
SETERRQ(PETSC_ERR_SUP,"PRIMME: Failed to open output file");
break;
case -2:
SETERRQ(PETSC_ERR_SUP,"PRIMME: Insufficient integer or real workspace allocated");
break;
case -3:
SETERRQ(PETSC_ERR_SUP,"PRIMME: main_iter encountered a problem");
break;
default:
SETERRQ(PETSC_ERR_SUP,"PRIMME: some parameters wrong configured");
break;
}
eps->nconv = ops->primme.initSize>=0?ops->primme.initSize:0;
eps->reason = EPS_CONVERGED_TOL;
eps->its = ops->primme.stats.numMatvecs;
#ifdef PETSC_USE_COMPLEX
/* PRIMME return real eigenvalues, but SLEPc work with complex ones, so we must cast them */
ierr = PetscMalloc(eps->nconv*sizeof(PetscScalar), &a); CHKERRQ(ierr);
for(i=0; i<eps->nconv; i++)
a[i] = PetscScalar(((double*)eps->eigr)[i], 0.0);
ierr = PetscFree(eps->eigr); CHKERRQ(ierr);
eps->eigr = a;
#else
ierr = PetscMemzero(eps->eigi, eps->nconv*sizeof(double)); CHKERRQ(ierr);
#endif
PetscFunctionReturn(0);
}
void multMatvec_PRIMME(PRIMMEScalar *in, PRIMMEScalar *out, int *blockSize, primme_params *primme)
{
int i, ierr, N = primme->n;
Vec x,y;
Mat *A = (Mat*)(primme->matrix);
ierr = VecCreateMPIWithArray(PETSC_COMM_WORLD,primme->nLocal,N,PETSC_NULL,&x);/*CHKERRQ(ierr);*/
ierr = VecCreateMPIWithArray(PETSC_COMM_WORLD,primme->nLocal,N,PETSC_NULL,&y);/*CHKERRQ(ierr);*/
for (i=0;i<*blockSize;i++) {
/* build vectors using 'in' an 'out' workspace */
ierr = VecPlaceArray(x, (PetscScalar*)in+N*i );/*CHKERRQ(ierr);*/
ierr = VecPlaceArray(y, (PetscScalar*)out+N*i );/*CHKERRQ(ierr);*/
ierr = MatMult(*A, x, y);/*CHKERRQ(ierr);*/
ierr = VecResetArray(x);/*CHKERRQ(ierr);*/
ierr = VecResetArray(y);/*CHKERRQ(ierr);*/
}
ierr = VecDestroy(x);/*CHKERRQ(ierr);*/
ierr = VecDestroy(y);/*CHKERRQ(ierr);*/
}
void applyPreconditioner_PRIMME(PRIMMEScalar *in, PRIMMEScalar *out, int *blockSize, struct primme_params *primme)
{
int i, ierr, N = primme->n;
Vec x,y,M = *(Vec*)(primme->preconditioner);
ierr = VecCreateMPIWithArray(PETSC_COMM_WORLD,primme->nLocal,N,PETSC_NULL,&x);/*CHKERRQ(ierr);*/
ierr = VecCreateMPIWithArray(PETSC_COMM_WORLD,primme->nLocal,N,PETSC_NULL,&y);/*CHKERRQ(ierr);*/
for (i=0;i<*blockSize;i++) {
/* build vectors using 'in' an 'out' workspace */
ierr = VecPlaceArray(x, (PetscScalar*)in+N*i );/*CHKERRQ(ierr);*/
ierr = VecPlaceArray(y, (PetscScalar*)out+N*i );/*CHKERRQ(ierr);*/
ierr = VecPointwiseMult(y, M, x);/*CHKERRQ(ierr);*/
ierr = VecResetArray(x);/*CHKERRQ(ierr);*/
ierr = VecResetArray(y);/*CHKERRQ(ierr);*/
}
ierr = VecDestroy(x);/*CHKERRQ(ierr);*/
ierr = VecDestroy(y);/*CHKERRQ(ierr);*/
}
#undef __FUNCT__
#define __FUNCT__ "EPSDestroy_PRIMME"
PetscErrorCode EPSDestroy_PRIMME(EPS eps)
{
PetscErrorCode ierr;
EPS_PRIMME *ops = (EPS_PRIMME *)eps->data;
PetscFunctionBegin;
PetscValidHeaderSpecific(eps,EPS_COOKIE,1);
primme_Free(&ops->primme);
ierr = PetscFree(eps->data); CHKERRQ(ierr);
ierr = EPSFreeSolutionContiguous(eps);CHKERRQ(ierr);
PetscFunctionReturn(0);
}
#undef __FUNCT__
#define __FUNCT__ "EPSView_PRIMME"
PetscErrorCode EPSView_PRIMME(EPS eps,PetscViewer viewer)
{
PetscFunctionBegin;
SETERRQ1(1,"Viewer type %s not supported for PRIMME",((PetscObject)viewer)->type_name);
PetscFunctionReturn(0);
}
#undef __FUNCT__
#define __FUNCT__ "EPSSetFromOptions_PRIMME"
PetscErrorCode EPSSetFromOptions_PRIMME(EPS eps)
{
PetscErrorCode ierr;
EPS_PRIMME *ops = (EPS_PRIMME *)eps->data;
PetscInt op;
PetscTruth flg;
const char *methodList[] = {
"DEFAULT_MIN_TIME",
"DEFAULT_MIN_MATVECS",
"Arnoldi",
"GD",
"GD_plusK",
"GD_Olsen_plusK",
"JD_Olsen_plusK",
"RQI",
"JDQR",
"JDQMR",
"JDQMR_ETol",
"SUBSPACE_ITERATION",
"LOBPCG_OrthoBasis",
"LOBPCG_OrthoBasis_Window"
}, *restartList[] = {"thick", "dtr"},
*precondList[] = {"none", "diagonal"};
EPS_primme_preset_method methodN[] = {
EPSPRIMME_DEFAULT_MIN_TIME,
EPSPRIMME_DEFAULT_MIN_MATVECS,
EPSPRIMME_Arnoldi,
EPSPRIMME_GD,
EPSPRIMME_GD_plusK,
EPSPRIMME_GD_Olsen_plusK,
EPSPRIMME_JD_Olsen_plusK,
EPSPRIMME_RQI,
EPSPRIMME_JDQR,
EPSPRIMME_JDQMR,
EPSPRIMME_JDQMR_ETol,
EPSPRIMME_SUBSPACE_ITERATION,
EPSPRIMME_LOBPCG_OrthoBasis,
EPSPRIMME_LOBPCG_OrthoBasis_Window
};
EPS_primme_restartscheme restartN[] = {EPSPRIMME_thick, EPSPRIMME_dtr};
PetscFunctionBegin;
ierr = PetscOptionsHead("PRIMME options");CHKERRQ(ierr);
op = ops->primme.maxBlockSize;
ierr = PetscOptionsInt("-eps_primme_maxBlockSize"," Max block size","EPSPRIMMESetBlockSize",op,&op,&flg); CHKERRQ(ierr);
if (flg) {ierr = EPSPRIMMESetBlockSize(eps,op);CHKERRQ(ierr);}
op = 0;
ierr = PetscOptionsEList("-eps_primme_method","set method for solving the eigenproblem",
"EPSPRIMMESetMethod",methodList,14,methodList[0],&op,&flg); CHKERRQ(ierr);
if (flg) {ierr = EPSPRIMMESetMethod(eps, methodN[op]);CHKERRQ(ierr);}
ierr = PetscOptionsEList("-eps_primme_restart","set the restarting scheme",
"EPSPRIMMESetRestart",restartList,2,restartList[0],&op,&flg); CHKERRQ(ierr);
if (flg) {ierr = EPSPRIMMESetRestart(eps, restartN[op]);CHKERRQ(ierr);}
ierr = PetscOptionsEList("-eps_primme_precond","set precondition",
"EPSPRIMMESetPrecond",precondList,2,precondList[0],&op,&flg); CHKERRQ(ierr);
if (flg) {ierr = EPSPRIMMESetPrecond(eps, op);CHKERRQ(ierr);}
ierr = PetscOptionsTail();CHKERRQ(ierr);
PetscFunctionReturn(0);
}
EXTERN_C_BEGIN
#undef __FUNCT__
#define __FUNCT__ "EPSPRIMMESetBlockSize_PRIMME"
PetscErrorCode EPSPRIMMESetBlockSize_PRIMME(EPS eps,int bs)
{
EPS_PRIMME *ops = (EPS_PRIMME *) eps->data;
PetscFunctionBegin;
if (bs == PETSC_DEFAULT) ops->primme.maxBlockSize = 1;
else if (bs <= 0) {
SETERRQ(1, "PRIMME: wrong block size");
} else ops->primme.maxBlockSize = bs;
PetscFunctionReturn(0);
}
EXTERN_C_END
#undef __FUNCT__
#define __FUNCT__ "EPSPRIMMESetBlockSize"
/*@C
EPSPRIMMESetBlockSize - The maximum block size the code will try to use. The user should set
this based on the architecture specifics of the target computer,
as well as any a priori knowledge of multiplicities. The code does
NOT require BlockSize > 1 to find multiple eigenvalues. For some
methods, keeping BlockSize = 1 yields the best overall performance.
Collective on EPS
Input Parameters:
+ eps - the eigenproblem solver context
- bs - block size
Options Database Key:
. -eps_primme_maxBlockSize - Sets the max allowed block size value
Note:
+ If it doesn't set it keeps the value established by primme_initialize.
- Inner iterations of QMR are not performed in a block fashion. Every correction equation from a block is solved independently.
Level: advanced
.seealso: EPSPRIMMEGetBlockSize()
@*/
PetscErrorCode EPSPRIMMESetBlockSize(EPS eps,int bs)
{
PetscErrorCode ierr, (*f)(EPS,int);
PetscFunctionBegin;
PetscValidHeaderSpecific(eps,EPS_COOKIE,1);
ierr = PetscObjectQueryFunction((PetscObject)eps,"EPSPRIMMESetBlockSize_C",(void (**)())&f);CHKERRQ(ierr);
if (f) {
ierr = (*f)(eps,bs);CHKERRQ(ierr);
}
PetscFunctionReturn(0);
}
EXTERN_C_BEGIN
#undef __FUNCT__
#define __FUNCT__ "EPSPRIMMEGetBlockSize_PRIMME"
PetscErrorCode EPSPRIMMEGetBlockSize_PRIMME(EPS eps,int *bs)
{
EPS_PRIMME *ops = (EPS_PRIMME *) eps->data;
PetscFunctionBegin;
if (bs) *bs = ops->primme.maxBlockSize;
PetscFunctionReturn(0);
}
EXTERN_C_END
#undef __FUNCT__
#define __FUNCT__ "EPSPRIMMEGetBlockSize"
/*@C
EPSPRIMMEGetBlockSize - Get the maximum block size the code will try to use.
Collective on EPS
Input Parameters:
. eps - the eigenproblem solver context
Output Parameters:
. bs - returned block size
Level: advanced
.seealso: EPSPRIMMESetBlockSize()
@*/
PetscErrorCode EPSPRIMMEGetBlockSize(EPS eps,int *bs)
{
PetscErrorCode ierr, (*f)(EPS,int*);
PetscFunctionBegin;
PetscValidHeaderSpecific(eps,EPS_COOKIE,1);
ierr = PetscObjectQueryFunction((PetscObject)eps,"EPSPRIMMEGetBlockSize_C",(void (**)())&f);CHKERRQ(ierr);
if (f) {
ierr = (*f)(eps,bs);CHKERRQ(ierr);
}
PetscFunctionReturn(0);
}
EXTERN_C_BEGIN
#undef __FUNCT__
#define __FUNCT__ "EPSPRIMMESetMethod_PRIMME"
PetscErrorCode EPSPRIMMESetMethod_PRIMME(EPS eps, EPS_primme_preset_method method)
{
EPS_PRIMME *ops = (EPS_PRIMME *) eps->data;
PetscFunctionBegin;
if (method == PETSC_DEFAULT) ops->method = DEFAULT_MIN_TIME;
else ops->method = (primme_preset_method)method;
PetscFunctionReturn(0);
}
EXTERN_C_END
#undef __FUNCT__
#define __FUNCT__ "EPSPRIMMESetMethod"
/*@C
EPSPRIMMESetMethod - Sets the method for the PRIMME library.
Collective on EPS
Input Parameters:
+ eps - the eigenproblem solver context
- method - method that will be used by PRIMME. It must be one of next them: EPSPRIMME_DEFAULT_MIN_TIME(EPSPRIMME_JDQMR_ETol),
EPSPRIMME_DEFAULT_MIN_MATVECS(EPSPRIMME_GD_Olsen_plusK), EPSPRIMME_Arnoldi, EPSPRIMME_GD, EPSPRIMME_GD_plusK, EPSPRIMME_GD_Olsen_plusK, EPSPRIMME_JD_Olsen_plusK, EPSPRIMME_RQI, EPSPRIMME_JDQR, EPSPRIMME_JDQMR,
EPSPRIMME_JDQMR_ETol, EPSPRIMME_SUBSPACE_ITERATION, EPSPRIMME_LOBPCG_OrthoBasis, EPSPRIMME_LOBPCG_OrthoBasis_Window
Options Database Key:
. -eps_primme_set_method - Sets the method for the PRIMME library.
Note: If it doesn't set it does EPSPRIMME_DEFAULT_MIN_TIME.
Level: advanced
.seealso: EPSPRIMMEGetMethod()
@*/
PetscErrorCode EPSPRIMMESetMethod(EPS eps, EPS_primme_preset_method method)
{
PetscErrorCode ierr, (*f)(EPS,EPS_primme_preset_method);
PetscFunctionBegin;
PetscValidHeaderSpecific(eps,EPS_COOKIE,1);
ierr = PetscObjectQueryFunction((PetscObject)eps,"EPSPRIMMESetMethod_C",(void (**)())&f);CHKERRQ(ierr);
if (f) {
ierr = (*f)(eps,method); CHKERRQ(ierr);
}
PetscFunctionReturn(0);
}
EXTERN_C_BEGIN
#undef __FUNCT__
#define __FUNCT__ "EPSPRIMMEGetMethod_PRIMME"
PetscErrorCode EPSPRIMMEGetMethod_PRIMME(EPS eps, EPS_primme_preset_method *method)
{
EPS_PRIMME *ops = (EPS_PRIMME *) eps->data;
PetscFunctionBegin;
if (method) *method = (EPS_primme_preset_method)ops->method;
PetscFunctionReturn(0);
}
EXTERN_C_END
#undef __FUNCT__
#define __FUNCT__ "EPSPRIMMEGetMethod"
/*@C
EPSPRIMMEGetMethod - Gets the method for the PRIMME library.
Mon Collective on EPS
Input Parameters:
. eps - the eigenproblem solver context
Output Parameters:
. method - method that will be used by PRIMME. It must be one of next them: DEFAULT_MIN_TIME(JDQMR_ETol),
DEFAULT_MIN_MATVECS(GD_Olsen_plusK), Arnoldi, GD, GD_plusK, GD_Olsen_plusK, JD_Olsen_plusK, RQI, JDQR, JDQMR,
JDQMR_ETol, SUBSPACE_ITERATION, LOBPCG_OrthoBasis, LOBPCG_OrthoBasis_Window
Level: advanced
.seealso: EPSPRIMMESetMethod()
@*/
PetscErrorCode EPSPRIMMEGetMethod(EPS eps, EPS_primme_preset_method *method)
{
PetscErrorCode ierr, (*f)(EPS,EPS_primme_preset_method*);
PetscFunctionBegin;
PetscValidHeaderSpecific(eps,EPS_COOKIE,1);
ierr = PetscObjectQueryFunction((PetscObject)eps,"EPSPRIMMEGetMethod_C",(void (**)())&f);CHKERRQ(ierr);
if (f) {
ierr = (*f)(eps,method); CHKERRQ(ierr);
}
PetscFunctionReturn(0);
}
EXTERN_C_BEGIN
#undef __FUNCT__
#define __FUNCT__ "EPSPRIMMESetRestart_PRIMME"
PetscErrorCode EPSPRIMMESetRestart_PRIMME(EPS eps, EPS_primme_restartscheme scheme)
{
EPS_PRIMME *ops = (EPS_PRIMME *) eps->data;
PetscFunctionBegin;
if (scheme == PETSC_DEFAULT) ops->primme.restartingParams.scheme = primme_thick;
else ops->primme.restartingParams.scheme = (primme_restartscheme)scheme;
PetscFunctionReturn(0);
}
EXTERN_C_END
#undef __FUNCT__
#define __FUNCT__ "EPSPRIMMESetRestart"
/*@C
EPSPRIMMESetRestart - Sets the restarting scheme for the PRIMME library.
Collective on EPS
Input Parameters:
+ eps - the eigenproblem solver context
- scheme - possible values are: EPSPRIMME_thick(thick restarting) is the most efficient and robust
in the general case, and EPSPRIMME_dtr(dynamic thick restarting) helpful without
preconditioning but it is expensive to implement.
Options Database Key:
. -eps_primme_restart - Sets the restarting scheme for the PRIMME library
Level: advanced
@*/
PetscErrorCode EPSPRIMMESetRestart(EPS eps, EPS_primme_restartscheme scheme)
{
PetscErrorCode ierr, (*f)(EPS, EPS_primme_restartscheme);
PetscFunctionBegin;
PetscValidHeaderSpecific(eps,EPS_COOKIE,1);
ierr = PetscObjectQueryFunction((PetscObject)eps,"EPSPRIMMESetRestart_C",(void (**)())&f);CHKERRQ(ierr);
if (f) {
ierr = (*f)(eps, scheme);CHKERRQ(ierr);
}
PetscFunctionReturn(0);
}
EXTERN_C_BEGIN
#undef __FUNCT__
#define __FUNCT__ "EPSPRIMMEGetRestart_PRIMME"
PetscErrorCode EPSPRIMMEGetRestart_PRIMME(EPS eps, EPS_primme_restartscheme *scheme)
{
EPS_PRIMME *ops = (EPS_PRIMME *) eps->data;
PetscFunctionBegin;
if (scheme) *scheme = (EPS_primme_restartscheme)ops->primme.restartingParams.scheme;
PetscFunctionReturn(0);
}
EXTERN_C_END
#undef __FUNCT__
#define __FUNCT__ "EPSPRIMMEGetRestart"
/*@C
EPSPRIMMEGetRestart - Gets the restarting scheme for the PRIMME library.
Non Collective on EPS
Input Parameters:
. eps - the eigenproblem solver context
Output Parameters:
. scheme - possible values are: EPSPRIMME_thick(thick restarting) is the most efficient and robust
in the general case, and EPSPRIMME_dtr(dynamic thick restarting) helpful without
preconditioning but it is expensive to implement.
Level: advanced
.seealso: EPSPRIMMESetRestart()
@*/
PetscErrorCode EPSPRIMMEGetRestart(EPS eps, EPS_primme_restartscheme *scheme)
{
PetscErrorCode ierr, (*f)(EPS, EPS_primme_restartscheme*);
PetscFunctionBegin;
PetscValidHeaderSpecific(eps,EPS_COOKIE,1);
ierr = PetscObjectQueryFunction((PetscObject)eps,"EPSPRIMMEGetRestart_C",(void (**)())&f);CHKERRQ(ierr);
if (f) {
ierr = (*f)(eps, scheme);CHKERRQ(ierr);
}
PetscFunctionReturn(0);
}
EXTERN_C_BEGIN
#undef __FUNCT__
#define __FUNCT__ "EPSPRIMMESetPrecond_PRIMME"
PetscErrorCode EPSPRIMMESetPrecond_PRIMME(EPS eps, int pre)
{
EPS_PRIMME *ops = (EPS_PRIMME *) eps->data;
PetscFunctionBegin;
if (pre == PETSC_DEFAULT) ops->primme.correctionParams.precondition = 0;
else if (pre != 0 && pre != 1) {
SETERRQ(1, "PRIMME: wrong precondition value (allowed 0 or 1)");
} else ops->primme.correctionParams.precondition = pre;
PetscFunctionReturn(0);
}
EXTERN_C_END
#undef __FUNCT__
#define __FUNCT__ "EPSPRIMMESetPrecond"
/*@C
EPSPRIMMESetPrecond - Sets either none or the diagonal matrix like preconditioner for the PRIMME library.
Collective on EPS
Input Parameters:
+ eps - the eigenproblem solver context
- pre - posible values are: 0, no preconditioning and 1, diagonal matrix for preconditioning
Options Database Key:
. -eps_primme_precond - Sets either none or the diagonal matrix like preconditioner for the PRIMME library
Note:
The default values is 0, i. e., no preconditioning.
Level: advanced
@*/
PetscErrorCode EPSPRIMMESetPrecond(EPS eps, int pre)
{
PetscErrorCode ierr, (*f)(EPS, int);
PetscFunctionBegin;
PetscValidHeaderSpecific(eps,EPS_COOKIE,1);
ierr = PetscObjectQueryFunction((PetscObject)eps,"EPSPRIMMESetPrecond_C",(void (**)())&f);CHKERRQ(ierr);
if (f) {
ierr = (*f)(eps, pre);CHKERRQ(ierr);
}
PetscFunctionReturn(0);
}
EXTERN_C_BEGIN
#undef __FUNCT__
#define __FUNCT__ "EPSPRIMMEGetPrecond_PRIMME"
PetscErrorCode EPSPRIMMEGetPrecond_PRIMME(EPS eps, int *pre)
{
EPS_PRIMME *ops = (EPS_PRIMME *) eps->data;
PetscFunctionBegin;
if (pre) *pre = ops->primme.correctionParams.precondition;
PetscFunctionReturn(0);
}
EXTERN_C_END
#undef __FUNCT__
#define __FUNCT__ "EPSPRIMMEGetPrecond"
/*@C
EPSPRIMMEGetPrecond - Gets if the diagonal matrix is going to use like preconditioner for the PRIMME library.
Collective on EPS
Input Parameters:
. eps - the eigenproblem solver context
Output Parameters:
. pre - posible values are: 0, no preconditioning and 1, diagonal matrix for preconditioning
Level: advanced
.seealso: EPSPRIMMEGetPrecond()
@*/
PetscErrorCode EPSPRIMMEGetPrecond(EPS eps, int *pre)
{
PetscErrorCode ierr, (*f)(EPS, int*);
PetscFunctionBegin;
PetscValidHeaderSpecific(eps,EPS_COOKIE,1);
ierr = PetscObjectQueryFunction((PetscObject)eps,"EPSPRIMMEGetPrecond_C",(void (**)())&f);CHKERRQ(ierr);
if (f) {
ierr = (*f)(eps, pre);CHKERRQ(ierr);
}
PetscFunctionReturn(0);
}
EXTERN_C_BEGIN
#undef __FUNCT__
#define __FUNCT__ "EPSCreate_PRIMME"
PetscErrorCode EPSCreate_PRIMME(EPS eps)
{
PetscErrorCode ierr;
EPS_PRIMME *primme;
PetscFunctionBegin;
ierr = PetscNew(EPS_PRIMME,&primme);CHKERRQ(ierr);
PetscLogObjectMemory(eps,sizeof(EPS_PRIMME));
eps->data = (void *) primme;
eps->ops->solve = EPSSolve_PRIMME;
eps->ops->setup = EPSSetUp_PRIMME;
eps->ops->setfromoptions = EPSSetFromOptions_PRIMME;
eps->ops->destroy = EPSDestroy_PRIMME;
eps->ops->view = EPSView_PRIMME;
eps->ops->backtransform = EPSBackTransform_Default;
eps->ops->computevectors = EPSComputeVectors_Default;
primme_initialize(&primme->primme);
primme->primme.matrixMatvec = multMatvec_PRIMME;
primme->method = DEFAULT_MIN_TIME;
primme->A = 0;
primme->M = 0;
ierr = PetscObjectComposeFunctionDynamic((PetscObject)eps,"EPSPRIMMESetBlockSize_C","EPSPRIMMESetBlockSize_PRIMME",EPSPRIMMESetBlockSize_PRIMME);CHKERRQ(ierr);
ierr = PetscObjectComposeFunctionDynamic((PetscObject)eps,"EPSPRIMMESetMethod_C","EPSPRIMMESetMethod_PRIMME",EPSPRIMMESetMethod_PRIMME);CHKERRQ(ierr);
ierr = PetscObjectComposeFunctionDynamic((PetscObject)eps,"EPSPRIMMESetRestart_C","EPSPRIMMESetRestart_PRIMME",EPSPRIMMESetMethod_PRIMME);CHKERRQ(ierr);
ierr = PetscObjectComposeFunctionDynamic((PetscObject)eps,"EPSPRIMMESetPrecond_C","EPSPRIMMESetPrecond_PRIMME",EPSPRIMMESetMethod_PRIMME);CHKERRQ(ierr);
ierr = PetscObjectComposeFunctionDynamic((PetscObject)eps,"EPSPRIMMEGetBlockSize_C","EPSPRIMMEGetBlockSize_PRIMME",EPSPRIMMEGetBlockSize_PRIMME);CHKERRQ(ierr);
ierr = PetscObjectComposeFunctionDynamic((PetscObject)eps,"EPSPRIMMEGetMethod_C","EPSPRIMMEGetMethod_PRIMME",EPSPRIMMEGetMethod_PRIMME);CHKERRQ(ierr);
ierr = PetscObjectComposeFunctionDynamic((PetscObject)eps,"EPSPRIMMEGetRestart_C","EPSPRIMMEGetRestart_PRIMME",EPSPRIMMEGetMethod_PRIMME);CHKERRQ(ierr);
ierr = PetscObjectComposeFunctionDynamic((PetscObject)eps,"EPSPRIMMEGetPrecond_C","EPSPRIMMEGetPrecond_PRIMME",EPSPRIMMEGetMethod_PRIMME);CHKERRQ(ierr);
PetscFunctionReturn(0);
}
EXTERN_C_END