[Paraview] Running Paraview on an HPC machine with multiple processes?

[Jake Gerard]

Any help here would be greatly appreciated.

On Tue, Jul 11, 2017 at 2:37 PM, Jake Gerard <jake.a.gerard at gmail.com>
wrote:

> Good Afternoon,
>
> I have been moving to an HDF5/XDMF system for analyzing big data from a
> computational fluid model. I finally got all the basic components working
> on my local machine but have run into problems when trying to run on an HPC
> system. Here is the XDMF file:
>
> <?xml version="1.0" ?>
> <!DOCTYPE Xdmf SYSTEM "Xdmf.dtd" []>
> <Xdmf xmlns:xi="http://www.w3.org/2003/XInclude" Version="2.1">
>   <Domain>
>     <Grid Name="my_Grid" GridType="Uniform">
>       <Topology TopologyType="3DCoRectMesh" Dimensions="91 19 19">
>       </Topology>
>       <Geometry GeometryType="Origin_DxDyDz">
>         <DataItem Dimensions="3" NumberType="Integer" Format="XML">
>           0 0 0
>         </DataItem>
>         <DataItem Dimensions="3" NumberType="Integer" Format="XML">
>           1 1 1
>         </DataItem>
>       </Geometry>
>       <Attribute Name="pressure" AttributeType="Scalar" Center="Node">
>         <DataItem Dimensions="91 19 19" NumberType="Float" Format="HDF">
>           out.h5:/pres_group/presmag
>         </DataItem>
>       </Attribute>
>       <Attribute Name="velocity" AttributeType="Vector" Center="Node">
>         <DataItem ItemType="Function" Function="JOIN($0, $1, $2)"
> Dimensions="91 19 19 3">
>           <DataItem Dimensions="91 19 19" NumberType="Float" Format="HDF">
>             out.h5:/velo_group/x_velo
>           </DataItem>
>           <DataItem Dimensions="91 19 19" NumberType="Float" Format="HDF">
>             out.h5:/velo_group/y_velo
>           </DataItem>
>           <DataItem Dimensions="91 19 19" NumberType="Float" Format="HDF">
>             out.h5:/velo_group/z_velo
>           </DataItem>
>         </DataItem>
>       </Attribute>
>     </Grid>
>   </Domain>
> </Xdmf>
>
> This has worked properly on my machine. However, when I was getting an
> error of failing to read the pressure data when I tried this on multiple
> processes. The vector data for velocity was fine, but the pressure data
> could not be read. I narrowed the problem down to something regarding the
> number of processes because the pressure data worked fine on the HPC
> machine if I only ran it on 1 process. Is there anything that sticks out
> that could be causing this problem? For instance, is there a different
> format for these files when they are run on multiple processes?
>
> Respectfully,
>
> Jacob Gerard
>
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