Using the clusters and servers in the CEES Grid is relatively simple once a few basic commands are learned. The CEES Clusters use a batch processing system. You use a cluster in the CEES Grid by logging in to the head node for that cluster, compiling your code, and then submitting the code in a script to the batch system. The batch system schedules your job for execution on the appropriate compute nodes, and on completion of the job, writes the results in your directory or a location of your choice, and emails you with a completion notice. The batch system software we use is PBS/Torque with the Maui scheduler.