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# PetscViewerADIOSOpen
Opens a file for ADIOS input/output. 
## Synopsis
```
#include "petscsys.h"   
PetscErrorCode PetscViewerADIOSOpen(MPI_Comm comm, const char name[], PetscFileMode type, PetscViewer *adiosv)
```
Collective


## Input Parameters

- ***comm -*** MPI communicator
- ***name -*** name of file
- ***type -*** type of file


```none
    FILE_MODE_WRITE - create new file for binary output
    FILE_MODE_READ - open existing file for binary input
    FILE_MODE_APPEND - open existing file for binary output
```



## Output Parameter

- ***adiosv -*** `PetscViewer` for ADIOS input/output to use with the specified file





## Note
This `PetscViewer` should be destroyed with `PetscViewerDestroy()`.


## See Also
 `PetscViewerASCIIOpen()`, `PetscViewerPushFormat()`, `PetscViewerDestroy()`, `PetscViewerHDF5Open()`,
`VecView()`, `MatView()`, `VecLoad()`, `PetscViewerSetType()`, `PetscViewerFileSetMode()`, `PetscViewerFileSetName()`
`MatLoad()`, `PetscFileMode`, `PetscViewer`

## Level
beginner

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/sys/classes/viewer/impls/adios/adios.c.html#PetscViewerADIOSOpen">src/sys/classes/viewer/impls/adios/adios.c</A>

## Examples
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/vec/vec/tutorials/ex10.c.html">src/vec/vec/tutorials/ex10.c</A><BR>


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