petsc-3.13.6 2020-09-29
KSPConvergedSkip
Convergence test that do not return as converged until the maximum number of iterations is reached.
Synopsis
#include "petscksp.h"
PetscErrorCode KSPConvergedSkip(KSP ksp,PetscInt n,PetscReal rnorm,KSPConvergedReason *reason,void *dummy)
Collective on ksp
Input Parameters
| ksp | - iterative context
|
| n | - iteration number
|
| rnorm | - 2-norm residual value (may be estimated)
|
| dummy | - unused convergence context
|
Returns
reason -KSP_CONVERGED_ITERATING, KSP_CONVERGED_ITS
Notes
This should be used as the convergence test with the option
KSPSetNormType(ksp,KSP_NORM_NONE), since norms of the residual are
not computed. Convergence is then declared after the maximum number
of iterations have been reached. Useful when one is using CG or
BiCGStab as a smoother.
See Also
KSPSetConvergenceTest(), KSPSetTolerances(), KSPSetNormType()
Level
advanced
Location
src/ksp/ksp/interface/iterativ.c
Examples
src/ksp/ksp/tutorials/ex71.c.html
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages