:orphan:
# PCFactorSetReuseFill
When matrices with different nonzero structure are factored, this causes later ones to use the fill ratio computed in the initial factorization. 
## Synopsis
```
#include "petscpc.h" 
PetscErrorCode PCFactorSetReuseFill(PC pc, PetscBool flag)
```
Logically Collective


## Input Parameters

- ***pc -*** the preconditioner context
- ***flag -*** `PETSC_TRUE` to reuse else `PETSC_FALSE`



## Options Database Key

- ***-pc_factor_reuse_fill -*** Activates `PCFactorSetReuseFill()`





## See Also
 `PCLU`, `PCCHOLESKY`, `PCILU`, `PCICC`, `PCFactorSetReuseOrdering()`, `PCFactorSetFill()`

## Level
intermediate

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/factor/factor.c.html#PCFactorSetReuseFill">src/ksp/pc/impls/factor/factor.c</A>

## Implementations

<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/factor/factor.c.html#PCFactorSetReuseFill_Factor">PCFactorSetReuseFill_Factor in src/ksp/pc/impls/factor/factor.c</A><BR>


---
[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/ksp/pc/impls/factor/factor.c)


[Index of all PC routines](index.md)  
[Table of Contents for all manual pages](/manualpages/index.md)  
[Index of all manual pages](/manualpages/singleindex.md)