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Running X11 GUI Apps

It is possible to run X11 GUI apps on the Hornet cluster. In general, this is not recommended and submitting batch jobs is strongly preferable. However, sometimes X11 is necessary and there are various ways to do this.

Connecting Using NX

The head node is running a NX server, so it is possible to connect with and NX client. The NX client allows you to disconnect and reconnect without crashing your apps. Note that this is beta software.

You can install an NX client (see installation instructions below) and then connect to hornet.engr.uconn.edu. In your session definition be sure to specify a GNOME SESSION.

NX client for Linux

The recommended NX client for Linux is qtnx. From Debian or Ubuntu this can be installed with the command "sudo apt-get install qtnx" From Fedora, "yum install fedora"

Connecting Using NX from OSX

The recommended NX client for OSX is OpenNX: http://opennx.net/download.html

Connecting Using NX from Windows

The recommended NX client for Windows is OpenNX: http://opennx.net/download.html

Running X11 Jobs

Once you have a GUI gnome session, you can run your jobs with bsub. For a single core job which uses X11, the following will work:

  bsub -XF programname