Dr. Ryne received his B.S. degree in Physics from the University of California at Berkeley in 1981. He received his M.S. and Ph.D. degrees in Physics from the University of Maryland at College Park in 1987 specializing in Accelerator Physics. His thesis research, under the direction of Professor Alex Dragt, was on the Lie algebraic treatment of space charge. During this period Dr. Ryne also contributed to the development of the MaryLie beam dynamics code. From 11/87 to 11/91 Dr. Ryne was a staff member in the Beam Research Program at Lawrence Livermore National Laboratory, where he performed R&D on the numerical simulation of klystrons. He was a staff member at Los Alamos National Laboratory from 11/91 to 4/2001, where he was the head of the Los Alamos Accelerator Code Group. During this period Dr. Ryne was also a co-Principal Investigator of a DOE/HPCC Grand Challenge in Computational Accelerator Physics. He is currently the leader or the Accelerator Modeling and Advanced Computing group at Lawrence Berkeley National Laboratory. Dr. Ryne is also a co-Principal Investigator of the DOE SciDAC project, "Advanced Computing for 21st Century Accelerator Science and Technology." Dr. Ryne's research interests include beam physics, parallel computing, and techniques for the numerical simulation of classical and quantum dynamical systems. He is an active member of the U.S. accelerator physics community. He has taught computational accelerator physics for the U.S. Particle Accelerator School (USPAS) and is a member of the USPAS Program Advisory Committee. He has helped organize several conferences and workshops, and was co-chair of two Computational Accelerator Physics conferences. Dr. Ryne is past chairman of the Executive Committee of the NERSC User Group.