KSPGetTolerances#

Gets the relative, absolute, divergence, and maximum iteration tolerances used by the default KSP convergence tests.

Synopsis#

#include "petscksp.h" 
#include "petscmat.h" 
PetscErrorCode KSPGetTolerances(KSP ksp, PetscReal *rtol, PetscReal *abstol, PetscReal *dtol, PetscInt *maxits)

Not Collective

Input Parameter#

  • ksp - the Krylov subspace context

Output Parameters#

  • rtol - the relative convergence tolerance

  • abstol - the absolute convergence tolerance

  • dtol - the divergence tolerance

  • maxits - maximum number of iterations

Note#

The user can specify NULL for any parameter that is not needed.

See Also#

KSP: Linear System Solvers, KSPSetTolerances(), KSP, KSPSetMinimumIterations(), KSPGetMinimumIterations()

Level#

intermediate

Location#

src/ksp/ksp/interface/itfunc.c

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