He received his Ph.D. in computer science from the Georgia Institute of Technology, College of Computing, in August 2001. His research interests are large--scale simulation using distributed simulation methods. He is the developer of Parallel/Distributed ns2 (pdns), the Georgia Tech Network Simulator (GTNetS), and is co-PI on the ns3 development effort. Before turning to a career in academia, Dr. Riley spent 20 years as an independent consultant and business owner, primarily working at the Air Force Eastern Test Range, developing and deploying systems for real-time missile launch support. He can be reached via email at riley@ece.gatech.edu.