petsc-3.4.5 2014-06-29

KSPSkipConverged

Convergence test that do not return as converged until the maximum number of iterations is reached.

Synopsis

#include "petscksp.h" 
PetscErrorCode  KSPSkipConverged(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