petsc-3.6.1 2015-08-06
KSPGMRESSetPreAllocateVectors
Causes GMRES and FGMRES to preallocate all its needed work vectors at initial setup rather than the default, which is to allocate them in chunks when needed.
Synopsis
#include "petscksp.h"
PetscErrorCode KSPGMRESSetPreAllocateVectors(KSP ksp)
Logically Collective on KSP
Input Parameter
ksp -iterative context obtained from KSPCreate
Options Database Key
-ksp_gmres_preallocate -Activates KSPGmresSetPreAllocateVectors()
Keywords
GMRES, preallocate, vectors
See Also
KSPGMRESSetRestart(), KSPGMRESSetOrthogonalization(), KSPGMRESGetOrthogonalization()
Level:intermediate
Location:src/ksp/ksp/impls/gmres/gmpre.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages