petsc-3.14.5 2021-03-03
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# KSPPIPEFCGGetNprealloc

get the number of directions to preallocate by PIPEFCG

### Synopsis

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

Not Collective

### Input Parameter

| ksp | - the Krylov space context

### Output Parameter

| nprealloc | - the number of directions preallocated

### Options Database

| -ksp_pipefcg_nprealloc <N>

### See Also

KSPPIPEFCG, KSPPIPEFCGGetTruncationType(), KSPPIPEFCGSetNprealloc()

### Level

advanced

### Location

src/ksp/ksp/impls/fcg/pipefcg/pipefcg.c
Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages