I don't know why CentOS would give you any benefit over Ubuntu unless you were patching the kernel. For instance, for your cluster, you may want support for the new Completely Fair Scheduler (CFS). Ubuntu will surely include support for CFS in Ubunt 8.04 LTS, due to the kernel inclusion >= 2.6.23. CentOS may take a long time to include CFS, and in fact, may not until RHEL6 comes along. So, if you want cutting edge features for your cluster, go with Ubuntu. Otherwise, I don't see how CentOS offers anything else over Ubuntu.
Btw, I run 64 CentOS machines in a pseudo-cluster at Cisco. I previously had them setup with Ubuntu Edgy, but a decision was made that some administrators may not understand how to support Ubuntu, and that most admins are more familiar with Red Hat style administration instead. Coincidentally, I passed off the project to an intern, and he is more familiar with Ubuntu and will be moving to Gutsy in the next release. Only a few scripts should need changing and we will make use of the new kernel features that are useful... -- Kristian Erik Hermansen -- ubuntu-server mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-server More info: https://wiki.ubuntu.com/ServerTeam
