Thomas Chen IBM Systems and Technology Group, 11400 Burnet Road, Austin, Texas 78758 (wtchenus.ibm.com). Dr. Chen is a Senior Technical Staff Member responsible for systems performance in the IBM Systems and Technology Group. He leads the team effort in developing Cell/B.E. processor–based blade servers, enhancing PowerPC Architecture and design, and characterizing the emerging workloads for the design of future servers. Since joining IBM in 1990, Dr. Chen has been awarded more than 20 patents spanning various technical areas. His technical interests include processor microarchitecture design, I/O and networking subsystem design, workload analysis and characterization, and performance modeling and analysis of processor and system architecture and designs. Dr. Chen received a Ph.D. degree in computer engineering from the State University of New York at Buffalo in 1989.

Ram Raghavan IBM Systems and Technology Group, 11400 Burnet Road, Austin, Texas 78758 (ramrus.ibm.com). Dr. Raghavan is a performance engineer in the Systems and Technology Group, currently working on the performance of future servers based on the POWER6* processors. He was previously part of the Cell/B.E. processor development team, with a focus on performance aspects. He has extensive experience in system verification as well, having been part of a team that pioneered the development of the first verification tools for POWER-based multiprocessor systems, for which he received an IBM Outstanding Technical Achievement Award. Dr. Raghavan has received seven patents, with three more filed. He received a Ph.D. degree in computer architecture from the University of Michigan at Ann Arbor in 1991.

Jason N. Dale IBM Systems and Technology Group, 11400 Burnet Road, Austin, Texas 78758 (jndaleus.ibm.com). Mr. Dale joined the Sony–Toshiba–IBM (STI) project in June 2001 as a member of the Performance Group. There he worked on processor modeling, benchmarking, code optimization, and compiler performance analysis for the Cell Broadband Engine until December 2005. During this time, he received a master's degree in computer engineering from the University of Texas at Austin. Mr. Dale is currently working on software development and the programming environment for a Cell/B.E. processor–based supercomputer.

Eiji Iwata Sony Computer Entertainment, Inc., Tokyo, Japan (Eiji.Iwatajp.sony.com). Mr. Iwata received an M.E. degree in information systems engineering from Kyushu University in Japan. He joined Sony Corporation, Tokyo, in 1991. In 1996, he was a visiting researcher in the Hydra project at the Computer Science Laboratory at Stanford University. Returning to Sony, he worked on the development of a chip multiprocessor for media applications. He joined the STI Design Center in 2001 and currently works on a project promoting the Cell/B.E. processor.

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