KSPGMRESSetPreAllocateVectors#
Causes KSPGMRES and KSPFGMRES 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
Input Parameter#
ksp - iterative context obtained from
KSPCreate()
Options Database Key#
-ksp_gmres_preallocate - Activates
KSPGmresSetPreAllocateVectors()
See Also#
KSP: Linear System Solvers, KSPGMRESSetRestart(), KSPGMRESSetOrthogonalization(), KSPGMRESGetOrthogonalization()
Level#
intermediate
Location#
Implementations#
KSPGMRESSetPreAllocateVectors_GMRES() in src/ksp/ksp/impls/gmres/gmres.c
Index of all KSP routines
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Index of all manual pages