SNES_KSP_SetConvergenceTestEW

Sets alternative convergence test for the linear solvers within an inexact Newton method.

Synopsis

int SNES_KSP_SetConvergenceTestEW(SNES snes)
Collective on SNES

Input Parameter

snes -SNES context

Notes

Currently, the default is to use a constant relative tolerance forthe inner linear solvers. Alternatively, one can use theEisenstat-Walker method, where the relative convergence toleranceis reset at each Newton iteration according progress of the nonlinearsolver.

Reference

S. C. Eisenstat and H. F. Walker, "Choosing the forcing terms in aninexact Newton method", SISC 17 (1), pp.16-32, 1996.

Keywords

SNES, KSP, Eisenstat, Walker, convergence, test, inexact, Newton

Location: src/snes/interface/snesut.c
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