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# ISGetNonlocalIndices
Retrieve an array of indices from remote processors in this communicator. 
## Synopsis
```
#include "petscis.h" 
PetscErrorCode ISGetNonlocalIndices(IS is, const PetscInt *indices[])
```
Collective


## Input Parameter

- ***is -*** the index set



## Output Parameter

- ***indices -*** indices with rank 0 indices first, and so on,  omitting
the current rank.  Total number of indices is the difference
total and local, obtained with `ISGetSize()` and `ISGetLocalSize()`,
respectively.





## Notes
Restore the indices using `ISRestoreNonlocalIndices()`.

The same scalability considerations as those for `ISGetTotalIndices()` apply here.


## See Also
 `IS`, `ISGetTotalIndices()`, `ISRestoreNonlocalIndices()`, `ISGetSize()`, `ISGetLocalSize().`

## Level
intermediate

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/is/is/interface/index.c.html#ISGetNonlocalIndices">src/vec/is/is/interface/index.c</A>


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