The MRSEC computational facilities are part of the Brandeis High Performance Computational Cluster (HPCC). HPCC is comprised of approximately 155 computational nodes each of which has 8 or 12 cores ranging in clock speed from 2.50 GHz to 3.16 GHz. In addition, 5 nodes of the cluster are connected to 12 NVIDIA GPUs. HPCC has about 36 TB of storage. The cluster uses customized Rocks cluster software with 64-bit Linux. The MRSEC has priority ownership of 23 of the nodes, and low priority access to the remaining nodes.