Start VNC Server - bwForCluster Chemistry - 3D Acceleration

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Revision as of 12:30, 20 May 2015 by J Salk (talk | contribs) (Run GL applications within the VNC session)
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1 Start a VNC Server on the bwForCluster Chemistry with 3D acceleration

If you want to do graphically intensive tasks such as visualizing systems of molecules you should use the visualization nodes with high performance graphics cards. To start a VNC Server on such a visualization node you must log into one of the nodes via ssh with your usual username and password:

$ ssh <UserID>@justus-vis.uni-ulm.de

Here you can start the VNC server with the following commands

$ module load vis/tigervnc
$ run_vncserver

If you start a VNC server for the first time you will be asked to set a password which will be required for clients trying to access your VNC desktop. Use a strong password because otherwise an attacker could take control of your VNC session.

2 Run GL applications within the VNC session

In order to execute GL applications with 3D acceleration from within the VNC session you have to open a terminal window and run the application through the VirtualGL wrapper command vglrun, e.g.:

$ vglrun glxgears -info