petsc-3.5.1 2014-08-06
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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.

Keywords

KSP, default, convergence, residual

See Also

KSPSetConvergenceTest(), KSPSetTolerances(), KSPSetNormType()

Level:advanced
Location:
src/ksp/ksp/interface/iterativ.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages