petsc-3.7.3 2016-07-24
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# PCFactorSetReuseOrdering

When similar matrices are factored, this causes the ordering computed in the first factor to be used for all following factors.

### Synopsis

    #include "petscpc.h"
    PetscErrorCode  PCFactorSetReuseOrdering(PC pc,PetscBool flag)

Logically Collective on PC

### Input Parameters

| pc | - the preconditioner context
| flag | - PETSC_TRUE to reuse else PETSC_FALSE

### Options Database Key

-pc_factor_reuse_ordering -Activate PCFactorSetReuseOrdering()

### Keywords

PC, levels, reordering, factorization, incomplete, LU

### See Also

PCFactorSetReuseFill()

Level:intermediate
Location: src/ksp/pc/impls/factor/cholesky/cholesky.c
Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages