petsc-master 2019-06-15
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SNESNGMRESSetSelectType

Sets the selection type for SNESNGMRES. This determines how the candidate solution and combined solution are used to create the next iterate.

Synopsis

#include "petscsnes.h" 
PetscErrorCode SNESNGMRESSetSelectType(SNES snes,SNESNGMRESSelectType stype)
Logically Collective on SNES

Input Parameters

snes - the iterative context
stype - selection type

Options Database

-snes_ngmres_select_type<difference,none,linesearch> -

SNESNGMRESSelectTypes

SNES_NGMRES_SELECT_NONE - choose the combined solution all the time
SNES_NGMRES_SELECT_DIFFERENCE - choose based upon the selection criteria
SNES_NGMRES_SELECT_LINESEARCH - choose based upon line search combination

Notes

The default line search used is the L2 line search and it requires two additional function evaluations.

Level

intermediate

Location

src/snes/impls/ngmres/snesngmres.c

Implementations

SNESNGMRESSetSelectType_NGMRES in src/snes/impls/ngmres/snesngmres.c

Index of all SNES routines
Table of Contents for all manual pages
Index of all manual pages