slepc-3.6.3 2016-03-29
EPSGDSetDoubleExpansion
Activate a variant where the search subspace is expanded with K*[A*x B*x] (double expansion) instead of the classic K*r, where K is the preconditioner, x the selected approximate eigenvector and r its associated residual vector.
Synopsis
#include "slepceps.h"
PetscErrorCode EPSGDSetDoubleExpansion(EPS eps,PetscBool use_gd2)
Logically Collective on EPS
Input Parameters
| eps | - the eigenproblem solver context
|
| use_gd2 | - the boolean flag
|
Options Database Keys
-eps_gd_double_expansion - activate the double-expansion variant of GD
Location: src/eps/impls/davidson/gd/gd.c
Index of all EPS routines
Table of Contents for all manual pages
Index of all manual pages