#include "petscksp.h" PetscErrorCode KSPSetComputeOperators(KSP ksp,PetscErrorCode (*func)(KSP,Mat,Mat,void*),void *ctx)Logically Collective
| ksp | - the KSP context | |
| func | - function to compute the operators | |
| ctx | - optional context |
func(KSP ksp,Mat A,Mat B,void *ctx)
| ksp | - the KSP context | |
| A | - the linear operator | |
| B | - preconditioning matrix | |
| ctx | - optional user-provided context |
Notes: The user provided func() will be called automatically at the very next call to KSPSolve(). It will not be called at future KSPSolve() calls unless either KSPSetComputeOperators() or KSPSetOperators() is called before that KSPSolve() is called.
To reuse the same preconditioner for the next KSPSolve() and not compute a new one based on the most recently computed matrix call KSPSetReusePreconditioner()
Level:beginner
Location:src/ksp/ksp/interface/itfunc.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages