petsc-3.7.3 2016-07-24
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# KSPFCGGetMmax

get the maximum number of previous directions FCG will store

### Synopsis

    #include "petscksp.h"
    PetscErrorCode KSPFCGGetMmax(KSP ksp,PetscInt *mmax)

Note: FCG stores mmax+1 directions at most (mmax previous ones, and one current one)

Not Collective

### Input Parameter

ksp -the Krylov space context

### Output Parameter

mmax -the maximum number of previous directons allowed for orthogonalization

### Options Database

-ksp_fcg_mmax <N> -

### Keywords

KSP, FCG, truncation

### See Also

KSPFCG, KSPFCGGetTruncationType(), KSPFCGGetNprealloc(), KSPFCGSetMmax()

Level:intermediate
Location: src/ksp/ksp/impls/fcg/fcg.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages