The group has a local cluster, Damiana, dedicated to numerical relativity simulations located in the large computer room at the AEI. The majority of our simulations require not only high performance of each individual processor in the cluster, but also high speed, low-latency, communication between them. Hence, we use an Infiniband interconnect and MPI for parallelisation.
The numerical-relativity cluster is administered by Nico Budewitz. More details on the setup and usage of the clusters can be found on our AEI supercomputers web pages.