KSPPIPEGCRSetNprealloc

set the number of directions to preallocate with KSPPIPEGCR

Synopsis

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

Logically Collective

Input Parameters

• ksp - the Krylov space context

• nprealloc - the number of vectors to preallocate

Options Database Key

• -ksp_pipegcr_nprealloc - number of vectors to preallocate

See Also

KSP: Linear System Solvers, KSPPIPEGCR, KSPPIPEGCRGetTruncationType(), KSPPIPEGCRGetNprealloc()

Level

advanced

Location

src/ksp/ksp/impls/gcr/pipegcr/pipegcr.c

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