CUDA on Rocks and Roll

In http://forums.nvidia.com/index.php?showtopic=49255 it was announced that there was support for CUDA

Has anyone built a cluster using this?
We are looking at building a cluster, and would appreciate any information/experience you might have had.

There does not appear to be too much beyond this original posting anywhere on the web. (If there are pointers are welcome)

Thanks

We have built several clusters with Rocks and the CUDA roll (for example, the cluster we showed at SC07).

The released roll is still based on CUDA 1.0, there will be an update to 1.1 soon.