#include "petscksp.h" int KSPDefaultConverged(KSP ksp,int n,PetscReal rnorm,KSPConvergedReason *reason,void *dummy)Collective on KSP
| ksp | - iterative context | |
| n | - iteration number | |
| rnorm | - 2-norm residual value (may be estimated) | |
| dummy | - unused convergence context |
| 1 | - if the iteration has converged; | |
| -1 | - if residual norm exceeds divergence threshold; | |
| 0 | - otherwise. |
rnorm < MAX (rtol * rnorm_0, atol);Divergence is detected if
rnorm > dtol * rnorm_0,
where
Use KSPSetTolerances() to alter the defaults for rtol, atol, dtol.
Level:intermediate
Location:src/sles/ksp/interface/iterativ.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages
| rtol = relative tolerance, | - . atol = absolute tolerance. | |
| dtol = divergence tolerance, | - - rnorm_0 = initial residual norm |