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# PCPARMSSetFill
Sets the fill-in parameters for ILUT, ILUK and ARMS preconditioners. Consider the original matrix A = [B F; E C] and the approximate version M = [LB 0; E/UB I]*[UB LB\F; 0 S]. 
## Synopsis
```
#include "petscpc.h" 
PetscErrorCode PCPARMSSetFill(PC pc, PetscInt lfil0, PetscInt lfil1, PetscInt lfil2)
```
Collective


## Input Parameters

- ***pc -*** the preconditioner context
- ***fil0 -*** the level of fill-in kept in LB, UB, E/UB and LB\F
- ***fil1 -*** the level of fill-in kept in S
- ***fil2 -*** the level of fill-in kept in the L and U parts of the LU factorization of S



## Options Database Keys

- ***-pc_parms_lfil_ilu_arms -*** set the amount of fill-in for ilut, iluk and arms
- ***-pc_parms_lfil_schur -*** set the amount of fill-in for schur
- ***-pc_parms_lfil_ilut_L_U -*** set the amount of fill-in for ILUT L and U





## Note
See the pARMS function `parms_PCSetFill()` for more information.


## See Also
 `PCPARMS`

## Level
intermediate

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

## Implementations

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


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


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