KSPFCGSetNprealloc#

set the number of directions to preallocate with KSPFCG

Synopsis#

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

Logically Collective

Input Parameters#

  • ksp - the Krylov space context

  • nprealloc - the number of vectors to preallocate

Options Database Key#

  • -ksp_fcg_nprealloc - number of directions to preallocate

See Also#

KSP: Linear System Solvers, KSPFCG, KSPFCGGetTruncationType(), KSPFCGGetNprealloc(), KSPFCGSetMmax(), KSPFCGGetMmax()

Level#

advanced

Location#

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

Index of all KSP routines
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Index of all manual pages