PelicanHPC
PelicanHPC picks up where ParallelKnoppix left off, providing a live CD that will let you set up a high performance computing cluster in a few minutes. The frontend node (either a real computer or a virtual machine) boots from the CD image. The compute nodes boot by PXE, using the frontend node as the server. All of the nodes of the cluster get their filesystems from the same CD image, so it is guaranteed that all nodes run the the same software. The CD image is created by running a single script, which takes advantage of the Debian Live infrastructure. If you need to add packages, it is very easy to create a custom version by adding the package names to the script and then running it. Pelican v1.0 was released January 10, 2008. Pelican 2.0 was released January 12, 2010. PelicanHPC 2.2 was released September 10, 2010.
Download link to the distribution ISO