petsc-3.6.2 2015-10-02
   
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