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
Notes#
The default modifypc routine is KSPPIPEGCRModifyPCNoChange()
.seealso: KSP: Linear System Solvers, KSPPIPEGCR, KSPPIPEGCRModifyPCNoChange()
Level#
intermediate
Location#
Implementations#
KSPPIPEGCRSetModifyPC_PIPEGCR in src/ksp/ksp/impls/gcr/pipegcr/pipegcr.c
Index of all KSP routines
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Index of all manual pages