KSPPIPEGCRSetModifyPC#

Sets the routine used by KSPPIPEGCR to modify the preconditioner at each iteration

Synopsis#

#include "petscksp.h"  
PetscErrorCode KSPPIPEGCRSetModifyPC(KSP ksp, PetscErrorCode (*function)(KSP, PetscInt, PetscReal, void *), void *data, PetscErrorCode (*destroy)(void *))

Logically Collective

Input Parameters#

  • ksp - iterative context obtained from KSPCreate() . function - user defined function to modify the preconditioner . ctx - user provided context for the modify preconditioner function

  • destroy - the function to use to destroy the user provided application context.

Calling Sequence of function#

PetscErrorCode function(KSP ksp, PetscInt n, PetscReal rnorm, void *ctx)

  • ksp - iterative context

  • n - the total number of PIPEGCR iterations that have occurred

  • rnorm - 2-norm residual value

  • ctx - the user provided application context

Calling Sequence of destroy#

PetscErrorCode destroy(void *ctx)

Notes#

The default modifypc routine is KSPPIPEGCRModifyPCNoChange()

See Also#

KSP: Linear System Solvers, KSPPIPEGCR, KSPPIPEGCRModifyPCNoChange()

Level#

intermediate

Location#

src/ksp/ksp/impls/gcr/pipegcr/pipegcr.c

Implementations#

KSPPIPEGCRSetModifyPC_PIPEGCR in src/ksp/ksp/impls/gcr/pipegcr/pipegcr.c

Edit on GitLab

Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages