/*
SLEPc singular value solver: "cyclic"
Method: Uses a Hermitian eigensolver for H(A) = [ 0 A ; A^T 0 ]
Last update: Jun 2007
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SLEPc - Scalable Library for Eigenvalue Problem Computations
Copyright (c) 2002-2009, Universidad Politecnica de Valencia, Spain
This file is part of SLEPc.
SLEPc is free software: you can redistribute it and/or modify it under the
terms of version 3 of the GNU Lesser General Public License as published by
the Free Software Foundation.
SLEPc is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
more details.
You should have received a copy of the GNU Lesser General Public License
along with SLEPc. If not, see <http://www.gnu.org/licenses/>.
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*/
#include "private/svdimpl.h" /*I "slepcsvd.h" I*/
#include "slepceps.h"
typedef struct {
PetscTruth explicitmatrix;
EPS eps;
Mat mat;
Vec x1,x2,y1,y2;
} SVD_CYCLIC;
#undef __FUNCT__
#define __FUNCT__ "ShellMatMult_CYCLIC"
PetscErrorCode ShellMatMult_CYCLIC(Mat B,Vec x, Vec y)
{
PetscErrorCode ierr;
SVD svd;
SVD_CYCLIC *cyclic;
PetscScalar *px,*py;
PetscInt m;
PetscFunctionBegin;
ierr = MatShellGetContext(B,(void**)&svd);CHKERRQ(ierr);
cyclic = (SVD_CYCLIC *)svd->data;
ierr = SVDMatGetLocalSize(svd,&m,PETSC_NULL);CHKERRQ(ierr);
ierr = VecGetArray(x,&px);CHKERRQ(ierr);
ierr = VecGetArray(y,&py);CHKERRQ(ierr);
ierr = VecPlaceArray(cyclic->x1,px);CHKERRQ(ierr);
ierr = VecPlaceArray(cyclic->x2,px+m);CHKERRQ(ierr);
ierr = VecPlaceArray(cyclic->y1,py);CHKERRQ(ierr);
ierr = VecPlaceArray(cyclic->y2,py+m);CHKERRQ(ierr);
ierr = SVDMatMult(svd,PETSC_FALSE,cyclic->x2,cyclic->y1);CHKERRQ(ierr);
ierr = SVDMatMult(svd,PETSC_TRUE,cyclic->x1,cyclic->y2);CHKERRQ(ierr);
ierr = VecResetArray(cyclic->x1);CHKERRQ(ierr);
ierr = VecResetArray(cyclic->x2);CHKERRQ(ierr);
ierr = VecResetArray(cyclic->y1);CHKERRQ(ierr);
ierr = VecResetArray(cyclic->y2);CHKERRQ(ierr);
ierr = VecRestoreArray(x,&px);CHKERRQ(ierr);
ierr = VecRestoreArray(y,&py);CHKERRQ(ierr);
PetscFunctionReturn(0);
}
#undef __FUNCT__
#define __FUNCT__ "ShellMatGetDiagonal_CYCLIC"
PetscErrorCode ShellMatGetDiagonal_CYCLIC(Mat B,Vec diag)
{
PetscErrorCode ierr;
PetscFunctionBegin;
ierr = VecSet(diag,0.0);CHKERRQ(ierr);
PetscFunctionReturn(0);
}
#undef __FUNCT__
#define __FUNCT__ "SVDSetUp_CYCLIC"
PetscErrorCode SVDSetUp_CYCLIC(SVD svd)
{
PetscErrorCode ierr;
SVD_CYCLIC *cyclic = (SVD_CYCLIC *)svd->data;
PetscInt M,N,m,n,i,j,start,end,ncols,*pos,nloc;
const PetscInt *cols;
const PetscScalar *vals;
PetscScalar *pU;
PetscFunctionBegin;
if (cyclic->mat) {
ierr = MatDestroy(cyclic->mat);CHKERRQ(ierr);
}
if (cyclic->x1) {
ierr = VecDestroy(cyclic->x1);CHKERRQ(ierr);
ierr = VecDestroy(cyclic->x2);CHKERRQ(ierr);
ierr = VecDestroy(cyclic->y1);CHKERRQ(ierr);
ierr = VecDestroy(cyclic->y2);CHKERRQ(ierr);
}
ierr = SVDMatGetSize(svd,&M,&N);CHKERRQ(ierr);
ierr = SVDMatGetLocalSize(svd,&m,&n);CHKERRQ(ierr);
if (cyclic->explicitmatrix) {
cyclic->x1 = cyclic->x2 = cyclic->y1 = cyclic->y2 = PETSC_NULL;
ierr = MatCreate(((PetscObject)svd)->comm,&cyclic->mat);CHKERRQ(ierr);
ierr = MatSetSizes(cyclic->mat,m+n,m+n,M+N,M+N);CHKERRQ(ierr);
ierr = MatSetFromOptions(cyclic->mat);CHKERRQ(ierr);
if (svd->AT) {
ierr = MatGetOwnershipRange(svd->AT,&start,&end);CHKERRQ(ierr);
for (i=start;i<end;i++) {
ierr = MatGetRow(svd->AT,i,&ncols,&cols,&vals);CHKERRQ(ierr);
j = i + M;
ierr = MatSetValues(cyclic->mat,1,&j,ncols,cols,vals,INSERT_VALUES);CHKERRQ(ierr);
ierr = MatSetValues(cyclic->mat,ncols,cols,1,&j,vals,INSERT_VALUES);CHKERRQ(ierr);
ierr = MatRestoreRow(svd->AT,i,&ncols,&cols,&vals);CHKERRQ(ierr);
}
} else {
ierr = PetscMalloc(sizeof(PetscInt)*n,&pos);CHKERRQ(ierr);
ierr = MatGetOwnershipRange(svd->A,&start,&end);CHKERRQ(ierr);
for (i=start;i<end;i++) {
ierr = MatGetRow(svd->A,i,&ncols,&cols,&vals);CHKERRQ(ierr);
for (j=0;j<ncols;j++)
pos[j] = cols[j] + M;
ierr = MatSetValues(cyclic->mat,1,&i,ncols,pos,vals,INSERT_VALUES);CHKERRQ(ierr);
ierr = MatSetValues(cyclic->mat,ncols,pos,1,&i,vals,INSERT_VALUES);CHKERRQ(ierr);
ierr = MatRestoreRow(svd->A,i,&ncols,&cols,&vals);CHKERRQ(ierr);
}
ierr = PetscFree(pos);CHKERRQ(ierr);
}
ierr = MatAssemblyBegin(cyclic->mat,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr);
ierr = MatAssemblyEnd(cyclic->mat,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr);
} else {
ierr = VecCreateMPIWithArray(((PetscObject)svd)->comm,m,M,PETSC_NULL,&cyclic->x1);CHKERRQ(ierr);
ierr = VecCreateMPIWithArray(((PetscObject)svd)->comm,n,N,PETSC_NULL,&cyclic->x2);CHKERRQ(ierr);
ierr = VecCreateMPIWithArray(((PetscObject)svd)->comm,m,M,PETSC_NULL,&cyclic->y1);CHKERRQ(ierr);
ierr = VecCreateMPIWithArray(((PetscObject)svd)->comm,n,N,PETSC_NULL,&cyclic->y2);CHKERRQ(ierr);
ierr = MatCreateShell(((PetscObject)svd)->comm,m+n,m+n,M+N,M+N,svd,&cyclic->mat);CHKERRQ(ierr);
ierr = MatShellSetOperation(cyclic->mat,MATOP_MULT,(void(*)(void))ShellMatMult_CYCLIC);CHKERRQ(ierr);
ierr = MatShellSetOperation(cyclic->mat,MATOP_GET_DIAGONAL,(void(*)(void))ShellMatGetDiagonal_CYCLIC);CHKERRQ(ierr);
}
ierr = EPSSetOperators(cyclic->eps,cyclic->mat,PETSC_NULL);CHKERRQ(ierr);
ierr = EPSSetProblemType(cyclic->eps,EPS_HEP);CHKERRQ(ierr);
ierr = EPSSetWhichEigenpairs(cyclic->eps,svd->which == SVD_LARGEST ? EPS_LARGEST_REAL : EPS_SMALLEST_MAGNITUDE);CHKERRQ(ierr);
ierr = EPSSetDimensions(cyclic->eps,svd->nsv,svd->ncv,svd->mpd);CHKERRQ(ierr);
ierr = EPSSetTolerances(cyclic->eps,svd->tol,svd->max_it);CHKERRQ(ierr);
ierr = EPSSetUp(cyclic->eps);CHKERRQ(ierr);
ierr = EPSGetDimensions(cyclic->eps,PETSC_NULL,&svd->ncv,&svd->mpd);CHKERRQ(ierr);
ierr = EPSGetTolerances(cyclic->eps,&svd->tol,&svd->max_it);CHKERRQ(ierr);
if (svd->ncv != svd->n) {
if (svd->U) {
ierr = VecGetArray(svd->U[0],&pU);CHKERRQ(ierr);
for (i=0;i<svd->n;i++) { ierr = VecDestroy(svd->U[i]); CHKERRQ(ierr); }
ierr = PetscFree(pU);CHKERRQ(ierr);
ierr = PetscFree(svd->U);CHKERRQ(ierr);
}
ierr = PetscMalloc(sizeof(Vec)*svd->ncv,&svd->U);CHKERRQ(ierr);
ierr = SVDMatGetLocalSize(svd,&nloc,PETSC_NULL);CHKERRQ(ierr);
ierr = PetscMalloc(svd->ncv*nloc*sizeof(PetscScalar),&pU);CHKERRQ(ierr);
for (i=0;i<svd->ncv;i++) {
ierr = VecCreateMPIWithArray(((PetscObject)svd)->comm,nloc,PETSC_DECIDE,pU+i*nloc,&svd->U[i]);CHKERRQ(ierr);
}
}
PetscFunctionReturn(0);
}
#undef __FUNCT__
#define __FUNCT__ "SVDSolve_CYCLIC"
PetscErrorCode SVDSolve_CYCLIC(SVD svd)
{
PetscErrorCode ierr;
SVD_CYCLIC *cyclic = (SVD_CYCLIC *)svd->data;
PetscInt i,j,M,m,idx,start,end;
PetscScalar sigma,*px;
Vec x;
IS isU,isV;
VecScatter vsU,vsV;
PetscFunctionBegin;
ierr = EPSSolve(cyclic->eps);CHKERRQ(ierr);
ierr = EPSGetConverged(cyclic->eps,&svd->nconv);CHKERRQ(ierr);
ierr = EPSGetIterationNumber(cyclic->eps,&svd->its);CHKERRQ(ierr);
ierr = EPSGetConvergedReason(cyclic->eps,(EPSConvergedReason*)&svd->reason);CHKERRQ(ierr);
ierr = MatGetVecs(cyclic->mat,&x,PETSC_NULL);CHKERRQ(ierr);
if (cyclic->explicitmatrix) {
ierr = EPSGetOperationCounters(cyclic->eps,&svd->matvecs,PETSC_NULL,PETSC_NULL);CHKERRQ(ierr);
ierr = SVDMatGetSize(svd,&M,PETSC_NULL);CHKERRQ(ierr);
ierr = VecGetOwnershipRange(svd->U[0],&start,&end);CHKERRQ(ierr);
ierr = ISCreateBlock(((PetscObject)svd)->comm,end-start,1,&start,&isU);CHKERRQ(ierr);
ierr = VecScatterCreate(x,isU,svd->U[0],PETSC_NULL,&vsU);CHKERRQ(ierr);
ierr = VecGetOwnershipRange(svd->V[0],&start,&end);CHKERRQ(ierr);
idx = start + M;
ierr = ISCreateBlock(((PetscObject)svd)->comm,end-start,1,&idx,&isV);CHKERRQ(ierr);
ierr = VecScatterCreate(x,isV,svd->V[0],PETSC_NULL,&vsV);CHKERRQ(ierr);
for (i=0,j=0;i<svd->nconv;i++) {
ierr = EPSGetEigenpair(cyclic->eps,i,&sigma,PETSC_NULL,x,PETSC_NULL);CHKERRQ(ierr);
if (PetscRealPart(sigma) > 0.0) {
svd->sigma[j] = PetscRealPart(sigma);
ierr = VecScatterBegin(vsU,x,svd->U[j],INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr);
ierr = VecScatterBegin(vsV,x,svd->V[j],INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr);
ierr = VecScatterEnd(vsU,x,svd->U[j],INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr);
ierr = VecScatterEnd(vsV,x,svd->V[j],INSERT_VALUES,SCATTER_FORWARD);CHKERRQ(ierr);
ierr = VecScale(svd->U[j],1.0/sqrt(2.0));CHKERRQ(ierr);
ierr = VecScale(svd->V[j],1.0/sqrt(2.0));CHKERRQ(ierr);
j++;
}
}
ierr = ISDestroy(isU);CHKERRQ(ierr);
ierr = VecScatterDestroy(vsU);CHKERRQ(ierr);
ierr = ISDestroy(isV);CHKERRQ(ierr);
ierr = VecScatterDestroy(vsV);CHKERRQ(ierr);
} else {
ierr = SVDMatGetLocalSize(svd,&m,PETSC_NULL);CHKERRQ(ierr);
for (i=0,j=0;i<svd->nconv;i++) {
ierr = EPSGetEigenpair(cyclic->eps,i,&sigma,PETSC_NULL,x,PETSC_NULL);CHKERRQ(ierr);
if (PetscRealPart(sigma) > 0.0) {
svd->sigma[j] = PetscRealPart(sigma);
ierr = VecGetArray(x,&px);CHKERRQ(ierr);
ierr = VecPlaceArray(cyclic->x1,px);CHKERRQ(ierr);
ierr = VecPlaceArray(cyclic->x2,px+m);CHKERRQ(ierr);
ierr = VecCopy(cyclic->x1,svd->U[j]);CHKERRQ(ierr);
ierr = VecScale(svd->U[j],1.0/sqrt(2.0));CHKERRQ(ierr);
ierr = VecCopy(cyclic->x2,svd->V[j]);CHKERRQ(ierr);
ierr = VecScale(svd->V[j],1.0/sqrt(2.0));CHKERRQ(ierr);
ierr = VecResetArray(cyclic->x1);CHKERRQ(ierr);
ierr = VecResetArray(cyclic->x2);CHKERRQ(ierr);
ierr = VecRestoreArray(x,&px);CHKERRQ(ierr);
j++;
}
}
}
svd->nconv = j;
ierr = VecDestroy(x);CHKERRQ(ierr);
PetscFunctionReturn(0);
}
#undef __FUNCT__
#define __FUNCT__ "SVDMonitor_CYCLIC"
PetscErrorCode SVDMonitor_CYCLIC(EPS eps,PetscInt its,PetscInt nconv,PetscScalar *eigr,PetscScalar *eigi,PetscReal *errest,PetscInt nest,void *ctx)
{
PetscInt i,j;
SVD svd = (SVD)ctx;
PetscFunctionBegin;
nconv = 0;
for (i=0,j=0;i<nest;i++) {
if (PetscRealPart(eigr[i]) > 0.0) {
svd->sigma[j] = PetscRealPart(eigr[i]);
svd->errest[j] = errest[i];
if (errest[i] < svd->tol) nconv++;
j++;
}
}
nest = j;
SVDMonitor(svd,its,nconv,svd->sigma,svd->errest,nest);
PetscFunctionReturn(0);
}
#undef __FUNCT__
#define __FUNCT__ "SVDSetFromOptions_CYCLIC"
PetscErrorCode SVDSetFromOptions_CYCLIC(SVD svd)
{
PetscErrorCode ierr;
SVD_CYCLIC *cyclic = (SVD_CYCLIC *)svd->data;
ST st;
PetscFunctionBegin;
ierr = PetscOptionsBegin(((PetscObject)svd)->comm,((PetscObject)svd)->prefix,"CYCLIC Singular Value Solver Options","SVD");CHKERRQ(ierr);
ierr = PetscOptionsTruth("-svd_cyclic_explicitmatrix","Use cyclic explicit matrix","SVDCyclicSetExplicitMatrix",PETSC_FALSE,&cyclic->explicitmatrix,PETSC_NULL);CHKERRQ(ierr);
if (cyclic->explicitmatrix) {
/* don't build the transpose */
if (svd->transmode == PETSC_DECIDE)
svd->transmode = SVD_TRANSPOSE_IMPLICIT;
} else {
/* use as default an ST with shell matrix and Jacobi */
ierr = EPSGetST(cyclic->eps,&st);CHKERRQ(ierr);
ierr = STSetMatMode(st,STMATMODE_SHELL);CHKERRQ(ierr);
}
ierr = PetscOptionsEnd();CHKERRQ(ierr);
ierr = EPSSetFromOptions(cyclic->eps);CHKERRQ(ierr);
ierr = PetscOptionsTail();CHKERRQ(ierr);
PetscFunctionReturn(0);
}
EXTERN_C_BEGIN
#undef __FUNCT__
#define __FUNCT__ "SVDCyclicSetExplicitMatrix_CYCLIC"
PetscErrorCode SVDCyclicSetExplicitMatrix_CYCLIC(SVD svd,PetscTruth explicitmatrix)
{
SVD_CYCLIC *cyclic = (SVD_CYCLIC *)svd->data;
PetscFunctionBegin;
cyclic->explicitmatrix = explicitmatrix;
PetscFunctionReturn(0);
}
EXTERN_C_END
#undef __FUNCT__
#define __FUNCT__ "SVDCyclicSetExplicitMatrix"
/*@
SVDCyclicSetExplicitMatrix - Indicate if the eigensolver operator
H(A) = [ 0 A ; A^T 0 ] must be computed explicitly.
Collective on SVD
Input Parameters:
+ svd - singular value solver
- explicit - boolean flag indicating if H(A) is built explicitly
Options Database Key:
. -svd_cyclic_explicitmatrix <boolean> - Indicates the boolean flag
Level: advanced
.seealso: SVDCyclicGetExplicitMatrix()
@*/
PetscErrorCode SVDCyclicSetExplicitMatrix(SVD svd,PetscTruth explicitmatrix)
{
PetscErrorCode ierr, (*f)(SVD,PetscTruth);
PetscFunctionBegin;
PetscValidHeaderSpecific(svd,SVD_COOKIE,1);
ierr = PetscObjectQueryFunction((PetscObject)svd,"SVDCyclicSetExplicitMatrix_C",(void (**)())&f);CHKERRQ(ierr);
if (f) {
ierr = (*f)(svd,explicitmatrix);CHKERRQ(ierr);
}
PetscFunctionReturn(0);
}
EXTERN_C_BEGIN
#undef __FUNCT__
#define __FUNCT__ "SVDCyclicGetExplicitMatrix_CYCLIC"
PetscErrorCode SVDCyclicGetExplicitMatrix_CYCLIC(SVD svd,PetscTruth *explicitmatrix)
{
SVD_CYCLIC *cyclic = (SVD_CYCLIC *)svd->data;
PetscFunctionBegin;
PetscValidPointer(explicitmatrix,2);
*explicitmatrix = cyclic->explicitmatrix;
PetscFunctionReturn(0);
}
EXTERN_C_END
#undef __FUNCT__
#define __FUNCT__ "SVDCyclicGetExplicitMatrix"
/*@C
SVDCyclicGetExplicitMatrix - Returns the flag indicating if H(A) is built explicitly
Not collective
Input Parameter:
. svd - singular value solver
Output Parameter:
. explicit - the mode flag
Level: advanced
.seealso: SVDCyclicSetExplicitMatrix()
@*/
PetscErrorCode SVDCyclicGetExplicitMatrix(SVD svd,PetscTruth *explicitmatrix)
{
PetscErrorCode ierr, (*f)(SVD,PetscTruth*);
PetscFunctionBegin;
PetscValidHeaderSpecific(svd,SVD_COOKIE,1);
ierr = PetscObjectQueryFunction((PetscObject)svd,"SVDCyclicGetExplicitMatrix_C",(void (**)())&f);CHKERRQ(ierr);
if (f) {
ierr = (*f)(svd,explicitmatrix);CHKERRQ(ierr);
}
PetscFunctionReturn(0);
}
EXTERN_C_BEGIN
#undef __FUNCT__
#define __FUNCT__ "SVDCyclicSetEPS_CYCLIC"
PetscErrorCode SVDCyclicSetEPS_CYCLIC(SVD svd,EPS eps)
{
PetscErrorCode ierr;
SVD_CYCLIC *cyclic = (SVD_CYCLIC *)svd->data;
PetscFunctionBegin;
PetscValidHeaderSpecific(eps,EPS_COOKIE,2);
PetscCheckSameComm(svd,1,eps,2);
ierr = PetscObjectReference((PetscObject)eps);CHKERRQ(ierr);
ierr = EPSDestroy(cyclic->eps);CHKERRQ(ierr);
cyclic->eps = eps;
svd->setupcalled = 0;
PetscFunctionReturn(0);
}
EXTERN_C_END
#undef __FUNCT__
#define __FUNCT__ "SVDCyclicSetEPS"
/*@
SVDCyclicSetEPS - Associate an eigensolver object (EPS) to the
singular value solver.
Collective on SVD
Input Parameters:
+ svd - singular value solver
- eps - the eigensolver object
Level: advanced
.seealso: SVDCyclicGetEPS()
@*/
PetscErrorCode SVDCyclicSetEPS(SVD svd,EPS eps)
{
PetscErrorCode ierr, (*f)(SVD,EPS eps);
PetscFunctionBegin;
PetscValidHeaderSpecific(svd,SVD_COOKIE,1);
ierr = PetscObjectQueryFunction((PetscObject)svd,"SVDCyclicSetEPS_C",(void (**)())&f);CHKERRQ(ierr);
if (f) {
ierr = (*f)(svd,eps);CHKERRQ(ierr);
}
PetscFunctionReturn(0);
}
EXTERN_C_BEGIN
#undef __FUNCT__
#define __FUNCT__ "SVDCyclicGetEPS_CYCLIC"
PetscErrorCode SVDCyclicGetEPS_CYCLIC(SVD svd,EPS *eps)
{
SVD_CYCLIC *cyclic = (SVD_CYCLIC *)svd->data;
PetscFunctionBegin;
PetscValidPointer(eps,2);
*eps = cyclic->eps;
PetscFunctionReturn(0);
}
EXTERN_C_END
#undef __FUNCT__
#define __FUNCT__ "SVDCyclicGetEPS"
/*@C
SVDCyclicGetEPS - Retrieve the eigensolver object (EPS) associated
to the singular value solver.
Not Collective
Input Parameter:
. svd - singular value solver
Output Parameter:
. eps - the eigensolver object
Level: advanced
.seealso: SVDCyclicSetEPS()
@*/
PetscErrorCode SVDCyclicGetEPS(SVD svd,EPS *eps)
{
PetscErrorCode ierr, (*f)(SVD,EPS *eps);
PetscFunctionBegin;
PetscValidHeaderSpecific(svd,SVD_COOKIE,1);
ierr = PetscObjectQueryFunction((PetscObject)svd,"SVDCyclicGetEPS_C",(void (**)())&f);CHKERRQ(ierr);
if (f) {
ierr = (*f)(svd,eps);CHKERRQ(ierr);
}
PetscFunctionReturn(0);
}
#undef __FUNCT__
#define __FUNCT__ "SVDView_CYCLIC"
PetscErrorCode SVDView_CYCLIC(SVD svd,PetscViewer viewer)
{
PetscErrorCode ierr;
SVD_CYCLIC *cyclic = (SVD_CYCLIC *)svd->data;
PetscFunctionBegin;
if (cyclic->explicitmatrix) {
ierr = PetscViewerASCIIPrintf(viewer,"cyclic matrix: explicit\n");CHKERRQ(ierr);
} else {
ierr = PetscViewerASCIIPrintf(viewer,"cyclic matrix: implicit\n");CHKERRQ(ierr);
}
ierr = EPSView(cyclic->eps,viewer);CHKERRQ(ierr);
PetscFunctionReturn(0);
}
#undef __FUNCT__
#define __FUNCT__ "SVDDestroy_CYCLIC"
PetscErrorCode SVDDestroy_CYCLIC(SVD svd)
{
PetscErrorCode ierr;
SVD_CYCLIC *cyclic = (SVD_CYCLIC *)svd->data;
PetscFunctionBegin;
ierr = EPSDestroy(cyclic->eps);CHKERRQ(ierr);
if (cyclic->mat) { ierr = MatDestroy(cyclic->mat);CHKERRQ(ierr); }
if (cyclic->x1) {
ierr = VecDestroy(cyclic->x1);CHKERRQ(ierr);
ierr = VecDestroy(cyclic->x2);CHKERRQ(ierr);
ierr = VecDestroy(cyclic->y1);CHKERRQ(ierr);
ierr = VecDestroy(cyclic->y2);CHKERRQ(ierr);
}
ierr = PetscFree(svd->data);CHKERRQ(ierr);
PetscFunctionReturn(0);
}
EXTERN_C_BEGIN
#undef __FUNCT__
#define __FUNCT__ "SVDCreate_CYCLIC"
PetscErrorCode SVDCreate_CYCLIC(SVD svd)
{
PetscErrorCode ierr;
SVD_CYCLIC *cyclic;
PetscFunctionBegin;
ierr = PetscNew(SVD_CYCLIC,&cyclic);CHKERRQ(ierr);
PetscLogObjectMemory(svd,sizeof(SVD_CYCLIC));
svd->data = (void *)cyclic;
svd->ops->solve = SVDSolve_CYCLIC;
svd->ops->setup = SVDSetUp_CYCLIC;
svd->ops->setfromoptions = SVDSetFromOptions_CYCLIC;
svd->ops->destroy = SVDDestroy_CYCLIC;
svd->ops->view = SVDView_CYCLIC;
ierr = PetscObjectComposeFunctionDynamic((PetscObject)svd,"SVDCyclicSetEPS_C","SVDCyclicSetEPS_CYCLIC",SVDCyclicSetEPS_CYCLIC);CHKERRQ(ierr);
ierr = PetscObjectComposeFunctionDynamic((PetscObject)svd,"SVDCyclicGetEPS_C","SVDCyclicGetEPS_CYCLIC",SVDCyclicGetEPS_CYCLIC);CHKERRQ(ierr);
ierr = PetscObjectComposeFunctionDynamic((PetscObject)svd,"SVDCyclicSetExplicitMatrix_C","SVDCyclicSetExplicitMatrix_CYCLIC",SVDCyclicSetExplicitMatrix_CYCLIC);CHKERRQ(ierr);
ierr = PetscObjectComposeFunctionDynamic((PetscObject)svd,"SVDCyclicGetExplicitMatrix_C","SVDCyclicGetExplicitMatrix_CYCLIC",SVDCyclicGetExplicitMatrix_CYCLIC);CHKERRQ(ierr);
ierr = EPSCreate(((PetscObject)svd)->comm,&cyclic->eps);CHKERRQ(ierr);
ierr = EPSSetOptionsPrefix(cyclic->eps,((PetscObject)svd)->prefix);CHKERRQ(ierr);
ierr = EPSAppendOptionsPrefix(cyclic->eps,"svd_");CHKERRQ(ierr);
ierr = PetscObjectIncrementTabLevel((PetscObject)cyclic->eps,(PetscObject)svd,1);CHKERRQ(ierr);
PetscLogObjectParent(svd,cyclic->eps);
ierr = EPSSetIP(cyclic->eps,svd->ip);CHKERRQ(ierr);
ierr = EPSSetWhichEigenpairs(cyclic->eps,EPS_LARGEST_REAL);CHKERRQ(ierr);
ierr = EPSMonitorSet(cyclic->eps,SVDMonitor_CYCLIC,svd,PETSC_NULL);CHKERRQ(ierr);
cyclic->explicitmatrix = PETSC_FALSE;
cyclic->mat = PETSC_NULL;
cyclic->x1 = PETSC_NULL;
cyclic->x2 = PETSC_NULL;
cyclic->y1 = PETSC_NULL;
cyclic->y2 = PETSC_NULL;
PetscFunctionReturn(0);
}
EXTERN_C_END