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

[Jake Gerard]

Alessandro,

Paraview says that it failed to read the attribute data. I just mean that
when I connect Paraview to the machine, the pressure data does not load if
I select more than 1 node or process/node.

Jake

On Wed, Jul 12, 2017 at 11:00 AM, Alessandro De Maio <demaio.a at gmail.com>
wrote:

> 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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