petsc-dev 2014-07-21
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SNESQNSetRestartType

Sets the restart type for SNESQN.

Synopsis

#include "petscsnes.h" 
PetscErrorCode SNESQNSetRestartType(SNES snes, SNESQNRestartType rtype)
Logically Collective on SNES

Input Parameters

snes - the iterative context
rtype - restart type

Options Database

-snes_qn_restart_type<powell,periodic,none> - set the restart type
-snes_qn_m - sets the number of stored updates and the restart period for periodic

SNESQNRestartTypes

SNES_QN_RESTART_NONE - never restart
SNES_QN_RESTART_POWELL - restart based upon descent criteria
SNES_QN_RESTART_PERIODIC - restart after a fixed number of iterations

Keywords

SNES, SNESQN, restart, type, set SNESLineSearch

Level:intermediate
Location:
src/snes/impls/qn/qn.c
Index of all SNES routines
Table of Contents for all manual pages
Index of all manual pages