KSPSetComputeRHS#

set routine to compute the right hand side of the linear system

Synopsis#

#include "petscksp.h" 
#include "petscmat.h" 
PetscErrorCode KSPSetComputeRHS(KSP ksp, PetscErrorCode (*func)(KSP, Vec, void *), void *ctx)

Logically Collective

Input Parameters#

ksp - the KSP context
func - function to compute the right hand side
ctx - optional context

Calling sequence of `func`#

PetscErrorCode func(KSP ksp, Vec b, void *ctx)

ksp - the KSP context
b - right hand side of linear system
ctx - optional user-provided context

Notes#

The routine you provide will be called EACH you call KSPSolve() to prepare the new right hand side for that solve

See Also#

KSP: Linear System Solvers, KSP, KSPSolve(), DMKSPSetComputeRHS(), KSPSetComputeOperators(), KSPSetOperators()

Level#

beginner

Location#

src/ksp/ksp/interface/itfunc.c

Examples#

src/ksp/ksp/tutorials/ex22f.F90
src/ksp/ksp/tutorials/ex25.c
src/ksp/ksp/tutorials/ex28.c
src/ksp/ksp/tutorials/ex29.c
src/ksp/ksp/tutorials/ex32.c
src/ksp/ksp/tutorials/ex34.c
src/ksp/ksp/tutorials/ex35.cxx
src/ksp/ksp/tutorials/ex36.cxx
src/ksp/ksp/tutorials/ex45.c
src/ksp/ksp/tutorials/ex45f.F90
src/ksp/ksp/tutorials/ex50.c

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