Which Distro is Best to Work with a Cuda Based Cluster?

Hi, im a newbie into this cuda and cluster world, and I have a project of making a cuda based cluster, so i dont know which distro is better or what apps would help me buiding this cluster, the cluster its a little one, just 3 pcs with gtx 275,260,9800+ and the master node… so what apps i need and which its the best distro for this project?

thanks a lot!

The Rocks distribution is a popular choice. I believe that there are even CUDA rolls available for it.

another question, the gpu in a CUDA application could be bottlenecked by the cpu?