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

[Alessandro De Maio]

Hi Jake,
     when you talk about running in multi-processing are you talking about
the solver that produces the data or about running Paraview in mpi-mode?
Which is the error you get?

Alessandro

On Wed, Jul 12, 2017 at 5:28 PM, Jake Gerard <jake.a.gerard at gmail.com>
wrote:

> 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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