# DMStagGetGlobalSizes
get global element counts 
## Synopsis
```
PetscErrorCode DMStagGetGlobalSizes(DM dm, PetscInt *M, PetscInt *N, PetscInt *P)
```
Not Collective


## Input Parameter

- ***dm -*** the `DMSTAG` object



## Output Parameters

- ***M -*** global element counts in the x direction
- ***N -*** global element counts in the y direction
- ***P -*** global element counts in the z direction





## Note
Arguments corresponding to higher dimensions are ignored for 1D and 2D grids. These arguments may be set to `NULL` in this case.


## See Also
 [](chapter_stag), `DMSTAG`, `DMStagGetLocalSizes()`, `DMDAGetInfo()`

## Level
beginner

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/impls/stag/stagutils.c.html#DMStagGetGlobalSizes">src/dm/impls/stag/stagutils.c</A>

## Examples
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/impls/stag/tutorials/ex2.c.html">src/dm/impls/stag/tutorials/ex2.c.html</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/impls/stag/tutorials/ex3.c.html">src/dm/impls/stag/tutorials/ex3.c.html</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/impls/stag/tutorials/ex4.c.html">src/dm/impls/stag/tutorials/ex4.c.html</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/impls/stag/tutorials/ex6.c.html">src/dm/impls/stag/tutorials/ex6.c.html</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/impls/stag/tutorials/ex8.c.html">src/dm/impls/stag/tutorials/ex8.c.html</A><BR>


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


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