Visualization

We provide Visualization via VirtualGL on the visualization nodes on Elysium.hpc.ruhr-uni-bochum.de

Requirements:

X11 server with 24-bit- or 32-bit Visuals. VirtualGL version > 3.0.2 installed.

You can check support for your Operating Sytsem at: https://virtualgl.org/Documentation/OSSupport You can download VirtualGL at: https://github.com/VirtualGL/virtualgl/releases

To use VirtualGL on Elysium, you will only need the VirtualGL client, it is not necessary to configure a VirtualGL Server.

Resource allocation:

Allocate resources in the vis partition.

salloc -p vis -N1 --time=02:00:00 --account=$ACCOUNT

This will allocate one entire vis node for 2 hours. Wait until a Slot in the vis partition is available. You can check if your resources are already allocated using the ‘squeue’ command.

Establish Virtual GL connection:

Connect directly from your computer to the visualization node via ssh with vglonnect -s Use one of the login servers login[001-004] as a jump host.

vglconnect -s $HPCUSER@vis001.elysium.hpc.rub.de -J $HPCUSER@login001.elysium.hpc.rub.de

If you don’t like long commands, you can configure one of the login nodes as jump host in your ~/.ssh/config for the vis[001-003] hosts. The command vglconnect -s accepts nearly the same syntax as ssh.

Run your Software:

Load a module if required. Start your application using vglrun, please remember to use useful command line options like -fps .

module load vmd
vglrun +pr -fps 60 vmd

Please remember to cancel the resource allocation once you are done with your interactive session.

scancel $jobID