petsc-3.14.5 2021-03-03
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# KSPPIPEGCRGetUnrollW

Get information on PIPEGCR unrolling the w vector

### Synopsis

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

Logically Collective on ksp

### Input Parameter

| ksp | - the Krylov space context

### Output Parameter

| unroll_w | - PIPEGCR uses unrolling (bool)

### Options Database

| -ksp_pipegcr_unroll_w

### See Also

KSPPIPEGCR, KSPPIPEGCRGetTruncationType(), KSPPIPEGCRGetNprealloc(),KSPPIPEGCRSetUnrollW()

### 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