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"
int KSPGMRESSetPreAllocateVectors(KSP ksp)
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()
Level:intermediate
Location:src/sles/ksp/impls/gmres/gmpre.c
Index of all KSP routines
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