KSPPIPEFCGSetNprealloc#

set the number of directions to preallocate with PIPEFCG

Synopsis#

#include "petscksp.h"  
PetscErrorCode KSPPIPEFCGSetNprealloc(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_pipefcg_nprealloc - the number of vectors to preallocate

See Also#

KSPPIPEFCG, KSPPIPEFCGSetTruncationType(), KSPPIPEFCGGetNprealloc()

Level#

advanced

Location#

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


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