petsc-3.7.1 2016-05-15

SNESNGMRESSetSelectType

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

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

Logically Collective on SNES Many br

	snes	- the iterative context Many br
	stype	- selection type Many br

-snes_ngmres_select_type<difference,none,linesearch> - Many br Many br

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

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

SNES, SNESNGMRES, selection, type, set SNESLineSearch