petsc-3.10.5 2019-03-28
KSPFGMRESSetModifyPC
Sets the routine used by FGMRES to modify the preconditioner.
Synopsis
#include "petscksp.h"
PetscErrorCode KSPFGMRESSetModifyPC(KSP ksp,PetscErrorCode (*fcn)(KSP,PetscInt,PetscInt,PetscReal,void*),void *ctx,PetscErrorCode (*d)(void*))
Logically Collective on KSP
Input Parameters
| ksp | - iterative context obtained from KSPCreate
|
| fcn | - modifypc function
|
| ctx | - optional contex
|
| d | - optional context destroy routine
|
Calling Sequence of function
ierr = int fcn(KSP ksp,int total_its,int loc_its,PetscReal res_norm,void*ctx);
ksp - the ksp context being used.
total_its - the total number of FGMRES iterations that have occurred.
loc_its - the number of FGMRES iterations since last restart.
res_norm - the current residual norm.
ctx - optional context variable
Options Database Keys
-ksp_fgmres_modifypcnochange
-ksp_fgmres_modifypcksp
Contributed by Allison Baker
Notes
Several modifypc routines are predefined, including
KSPFGMRESModifyPCNoChange()
KSPFGMRESModifyPCKSP()
See Also
KSPFGMRESModifyPCNoChange(), KSPFGMRESModifyPCKSP()
Level
intermediate
Location
src/ksp/ksp/impls/gmres/fgmres/modpcf.c
Implementations
KSPFGMRESSetModifyPC_FGMRES in src/ksp/ksp/impls/gmres/fgmres/fgmres.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages