:orphan:
# DMSetRefineLevel
Sets the number of refinements that have generated this `DM`.
## Synopsis
```
#include "petscdm.h"
#include "petscdmlabel.h"
#include "petscds.h"
PetscErrorCode DMSetRefineLevel(DM dm, PetscInt level)
```
Not Collective
## Input Parameters
- ***dm -*** the `DM` object
- ***level -*** number of refinements
## Notes
This value is used by `PCMG` to determine how many multigrid levels to use
The values are usually set automatically by the process that is causing the refinements of an initial `DM` by calling this routine.
## See Also
[](ch_dmbase), `DM`, `DMGetRefineLevel()`, `DMCoarsen()`, `DMGetCoarsenLevel()`, `DMDestroy()`, `DMView()`, `DMCreateGlobalVector()`, `DMCreateInterpolation()`
## Level
advanced
## Location
src/dm/interface/dm.c
## Examples
src/ksp/ksp/tutorials/ex65.c
---
[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/dm/interface/dm.c)
[Index of all DM routines](index.md)
[Table of Contents for all manual pages](/manualpages/index.md)
[Index of all manual pages](/manualpages/singleindex.md)