XDMF3 reader fails to read large file in parallel (#17295) · Issues · ParaView / ParaView

XDMF3 reader fails to read large file in parallel

I have a 1.8Tb file in HDF5 format, with a single variable per file (uniform grid of size 768076807680). The XDMF reader version 2 reads it without problem, using 256 tasks (64 nodes of 64Gb each).

the XDMF reader version 3 crashes with the error:

terminate called after throwing an instance of 'XdmfError'
what(): Number of values in hdf5 dataset (452984832000)
does not match allocated size in XdmfArray (2013265920).

Am not sure if it is a problem of syntax, or something worse. My XDMF file is:

]> 0.0 0.0 0.0 1.0E-00 1.0E-00 1.0E-00 lc_9600box_7680_lightcone_phi_0.h5:/data

I have a 1.8Tb file in HDF5 format, with a single variable per file (uniform grid of size 7680*7680*7680). The XDMF reader version 2 reads it without problem, using 256 tasks (64 nodes of 64Gb each).

the XDMF reader version 3 crashes with the error:

terminate called after throwing an instance of 'XdmfError'  
  what():  Number of values in hdf5 dataset (452984832000)  
does not match allocated size in XdmfArray (2013265920).

Am not sure if it is a problem of syntax, or something worse. My XDMF file is:

>>>
<?xml version="1.0" ?>
<!DOCTYPE Xdmf SYSTEM "Xdmf.dtd" []>
<Xdmf xmlns:xi="http://www.w3.org/2003/XInclude" Version="2.2">
  <Domain>
    <Grid GridType="Uniform">
<Topology TopologyType="3DCORECTMesh" Dimensions="    7680    7680    7680"/>
      <Geometry GeometryType="ORIGIN_DXDYDZ">
        <DataItem Name="Origin" Dimensions="3" NumberType="Float" Precision="4" Format="XML">
 0.0 0.0 0.0
        </DataItem>
        <DataItem Name="Spacing" Dimensions="3" NumberType="Float" Precision="4" Format="XML">
  1.0E-00  1.0E-00  1.0E-00
        </DataItem>
      </Geometry>
      <Attribute Name="phi0" Active="1" AttributeType="Scalar" Center="Node">
<DataItem Dimensions="     7680     7680    7680" NumberType="Float" Precision="4" Format="HDF">lc_9600box_7680_lightcone_phi_0.h5:/data</DataItem>
      </Attribute>
    </Grid>
  </Domain>
</Xdmf>
>>>