petsc-3.14.6 2021-03-30

SNESSetForceIteration

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

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

Logically Collective on SNES

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

-snes_force_iteration <force>

- Sets forcing an iteration

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

intermediate