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# PetscViewerBinaryAddMPIIOOffset
Adds to the current global offset 
## Synopsis
```
#include "petscviewer.h"   
PetscErrorCode PetscViewerBinaryAddMPIIOOffset(PetscViewer viewer, MPI_Offset off)
```
Logically Collective; No Fortran Support


## Input Parameters

- ***viewer -*** `PetscViewer` context, obtained from `PetscViewerBinaryOpen()`
- ***off -*** the addition to the global offset





## Note
Use `PetscViewerBinaryGetMPIIOOffset()` to get the value that you should pass to `MPI_File_set_view()` or `MPI_File_{write|read}_at[_all]()`


## See Also
 [](sec_viewers), `PETSCVIEWERBINARY`, `PetscViewerBinaryOpen()`, `PetscViewerBinaryGetInfoPointer()`, `PetscViewerBinaryGetUseMPIIO()`, `PetscViewerBinarySetUseMPIIO()`, `PetscViewerBinaryGetMPIIOOffset()`

## Level
advanced

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/sys/classes/viewer/impls/binary/binv.c.html#PetscViewerBinaryAddMPIIOOffset">src/sys/classes/viewer/impls/binary/binv.c</A>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/sys/classes/viewer/impls/binary/binv.c)


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