== !ParaView on JURECA
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[[Image(hardwareComponents.png, 450px, margin=10)]]

[http://www.fz-juelich.de/ias/jsc/EN/Expertise/Supercomputers/JURECA/JURECA_node.html JURECA] provides 
   * 1872 compute nodes and 

   * 12 visualization nodes equipped with 
      * Two NVIDIA K40 GPUs per node
      * 2 x 12 GiB GDDR5 memory
      * 10 nodes with 512 GiB memory
      * 2 nodes with 1024 GiB memory

   * Login nodes providing direct user access

There are several ways of how to do Remote Visualization with !ParaView on JURECA. In the following table the two general approaches are presented:


||= '''Remote Visualization''' =||=  =||= pro =||= contra =||
{{{#!td
 ''' VNC '''\\
 [wiki:SampleVNCParaViewSessionJURECA See sample VNC ParaView session]
}}}
{{{#!td
[[Image(RemoteVisWithVNC.png, 400px)]]
}}}
{{{#!td
- easy to use, user only needs to install VNC viewer (not the vis app itself)
- very convenient, full desktop access of remote machine
- image delivery is fast
- GPU not needed on remote machine
}}}
{{{#!td
- software OpenGL not integrated in all VNC Servers
- software OpenGL is slow
- no parallel visualization
}}}
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{{{#!td
 ''' Client-Server mode '''\\
 [wiki:SampleParaViewSessionJURECA See sample session]
}}}
{{{#!td
[[Image(PVClientServer.png, 400px)]]
}}}
{{{#!td
- rendering on GPU possible (on visualization nodes)
- in situ visualization possible
- ParaView server can be run in parallel
}}}
{{{#!td
- user has to install ParaView on his workstation
- batch job needed
- ssh tunnel needed
}}}

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any feedback welcomed - h.zilken@fz.juelich.de, goebbert@jara.rwth-aachen.de