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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