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# PETSCVIEWERCGNS
A viewer for CGNS files 


## Options Database Key

- ***-viewer_cgns_batch_size SIZE -*** set max number of output sequence times to write per batch



## Note
If the filename contains an integer format character, the CGNS viewer will created a batched output sequence. For
example, one could use `-ts_monitor_solution cgns:flow-%d.cgns`. This is desirable if one wants to limit file sizes or
if the job might crash/be killed by a resource manager before exiting cleanly.


## See Also
 [](sec_viewers), `PetscViewer`, `PetscViewerCreate()`, `VecView()`, `DMView()`, `PetscViewerFileSetName()`, `PetscViewerFileSetMode()`, `TSSetFromOptions()`

## Level
beginner

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/sys/classes/viewer/impls/cgns/cgnsv.c.html#PETSCVIEWERCGNS">src/sys/classes/viewer/impls/cgns/cgnsv.c</A>


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