petsc-3.12.1 2019-10-22
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# KSPPIPEGCRSetUnrollW

Set to PETSC_TRUE to use PIPEGCR with unrolling of the w vector

### Synopsis

    #include "petscksp.h"
    PetscErrorCode KSPPIPEGCRSetUnrollW(KSP ksp,PetscBool unroll_w)

Logically Collective on ksp

### Input Parameters

| ksp | - the Krylov space context
| unroll_w | - use unrolling

### Options Database

-ksp_pipegcr_unroll_w -

### See Also

KSPPIPEGCR, KSPPIPEGCRSetTruncationType(), KSPPIPEGCRSetNprealloc(),KSPPIPEGCRGetUnrollW()

### Level

intermediate

### Location

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