KSPFCGSetNprealloc#

set the number of directions to preallocate with FCG

Synopsis#

#include "petscksp.h"  
PetscErrorCode KSPFCGSetNprealloc(KSP ksp, PetscInt nprealloc)

Logically Collective on ksp

Input Parameters#

  • ksp - the Krylov space context

  • nprealloc - the number of vectors to preallocate

Options Database#

  • -ksp_fcg_nprealloc - number of directions to preallocate

See Also#

KSPFCG, KSPFCGGetTruncationType(), KSPFCGGetNprealloc()

Level#

advanced

Location#

src/ksp/ksp/impls/fcg/fcg.c


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