KSPGMRESSetBreakdownTolerance#
Sets tolerance for determining divergence breakdown in KSPGMRES.
Synopsis#
#include "petscksp.h"
PetscErrorCode KSPGMRESSetBreakdownTolerance(KSP ksp, PetscReal tol)
Logically Collective
Input Parameters#
ksp - the Krylov space context
tol - the tolerance
Options Database Key#
-ksp_gmres_breakdown_tolerance
- set tolerance for determining divergence breakdown
Note#
Divergence breakdown occurs when GMRES residual increases significantly during restart
See Also#
KSP: Linear System Solvers, KSPGMRES, KSPSetTolerances(), KSPGMRESSetHapTol()
Level#
intermediate
Location#
Implementations#
KSPGMRESSetBreakdownTolerance_GMRES in src/ksp/ksp/impls/gmres/gmres.c
Index of all KSP routines
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Index of all manual pages