# PCFactorSetReuseFill

When matrices with same different nonzero structure are factored, this causes later ones to use the fill ratio computed in the initial factorization.

### Synopsis

    #include "petscpc.h"
    PetscErrorCode PETSCKSP_DLLEXPORT PCFactorSetReuseFill(PC pc,PetscTruth flag)

Collective on PC

### Input Parameters

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

### Options Database Key

-pc_factor_reuse_fill -Activates PCFactorSetReuseFill()

### Keywords

PC, levels, reordering, factorization, incomplete, Cholesky

### See Also

PCFactorSetReuseOrdering()

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