KSPPIPEGCRSetModifyPC#

Sets the routine used by PIPEGCR to modify the preconditioner.

Synopsis#

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

Logically Collective on ksp

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

Notes#

The default modifypc routine is KSPPIPEGCRModifyPCNoChange()

.seealso: KSPPIPEGCRModifyPCNoChange()

Level#

intermediate

Location#

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

Implementations#

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


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