KSPSetConvergedNegativeCurvature#
Allows to declare convergence and return KSP_CONVERGED_NEG_CURVE when negative curvature is detected
Synopsis#
#include "petscksp.h"
PetscErrorCode KSPSetConvergedNegativeCurvature(KSP ksp, PetscBool flg)
Collective
Input Parameters#
ksp - iterative context
flg - the Boolean value
Options Database Key#
-ksp_converged_neg_curve
- Declare convergence if negative curvature is detected
Notes#
This is currently used only by a subset of the Krylov solvers, namely KSPCG, KSPSTCG, KSPQCG, KSPGLTR, KSPNASH, and KSPMINRES.
See Also#
KSP: Linear System Solvers, KSP, KSPConvergedReason, KSPGetConvergedNegativeCurvature()
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