# DMDAGetNumLocalSubDomains
Gets the number of local subdomains created upon decomposition. 
## Synopsis
```
#include "petscdmda.h"   
PetscErrorCode DMDAGetNumLocalSubDomains(DM da, PetscInt *Nsub)
```
Not collective


## Input Parameters

- ***da  -*** The `DMDA`



## Output Parameters

- ***Nsub   -*** Number of local subdomains created upon decomposition





## See Also
 `DM`, `DMDA`, `DMCreateDomainDecomposition()`, `DMDASetNumLocalSubDomains()`

## Level
intermediate

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/impls/da/da.c.html#DMDAGetNumLocalSubDomains">src/dm/impls/da/da.c</A>


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


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