petsc-3.11.4 2019-09-28
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SNESSetForceIteration

 force SNESSolve() to take at least one iteration regardless of the initial residual norm

Synopsis

#include "petscsnes.h"  
PetscErrorCode  SNESSetForceIteration(SNES snes,PetscBool force)
Logically Collective on SNES

Input Parameters

snes - the SNES context
force - PETSC_TRUE require at least one iteration

Options Database Keys

-snes_force_iteration <force> -Sets forcing an iteration

Notes

This is used sometimes with TS to prevent TS from detecting a false steady state solution

Keywords

SNES, nonlinear, set, convergence, tolerances

See Also

SNESSetTrustRegionTolerance(), SNESSetDivergenceTolerance()

Level

intermediate

Location

src/snes/interface/snes.c
Index of all SNES routines
Table of Contents for all manual pages
Index of all manual pages