Author bios

Tilak Agerwala IBM POWER Parallel Division, Highly Parallel Supercomputing Systems Laboratory, 522 South Road, Poughkeepsie, New York 12601-5400 (electronic mail:tilak@vnet.ibm.com). Dr. Agerwala is the Director of Parallel Architecture and System Design in the POWER Parallel Division and is responsible for system architecture, technology strategy, and performance evaluation. His area of expertise is computer architecture with a focus on high-performance computing, superscalar designs, and parallel processing. Dr. Agerwala received his Ph.D. in electrical engineering from The Johns Hopkins University, Baltimore, Maryland, in 1975 and his B. Tech. degree from the Indian Institute of Technology, Kanpur, India, in 1971. From 1975 to 1979 he was an assistant professor at the University of Texas at Austin. He joined IBM in 1979 as a research staff member at the Thomas J. Watson Research Center. From 1984 to 1987 he established and managed broad research programs in parallel processing, supercomputing, and artificial intelligence. He was appointed to the Corporate Technical Committee in 1987 and was Director of Future Systems Technology in the RISC System/6000 division prior to assuming his present position. Dr. Agerwala has published several papers and given numerous invited technical presentations worldwide in his area of expertise. He is a member of the IBM Academy of Technology and was elected to its Technology Council in 1990. He has served on many professional panels and advisory committees. Dr. Agerwala is a member of ACM and a Fellow of the Institute of Electrical and Electronics Engineers.

Joanne L. Martin IBM POWER Parallel Division, Highly Parallel Supercomputing Systems Laboratory, 522 South Road, Poughkeepsie, New York 12601-5400 (electronic mail:jmartin@vnet.ibm.com). Dr. Martin joined IBM as a research staff member at the Thomas J. Watson Research Center in November, 1984. She received her Ph.D. in mathematics from The Johns Hopkins University in 1981 and conducted research in performance evaluation for supercomputers at Los Alamos Partnerships and Performance Studies. Her area of expertise is in the evaluation of performance of supercomputing systems, an area in which she has published a number of papers and edited books and journals. In May 1991, Dr. Martin was appointed manager of her present department, which is responsible for performance and modeling for the POWER Parallel Division, and in January 1993, she was appointed a Senior Technical Staff Member in recognition of her work in the area of analysis of high-performance systems. She has maintained a connection to the external scientific community, editing a journal that is published by The MIT Press, serving as the general chair of Supercomputing 90, and serving as an advisor to the Department of Energy and the National Science Foundation (where she served as the chair of the program advisory committee for advanced scientific computing in 1991). Additionally, she was named to Who's Who in Science and Engineering for 1992-1993.

Jamshed H. Mirza IBM POWER Parallel Division, Highly Parallel Supercomputing Systems Laboratory, 522 South Road, Poughkeepsie, New York 12601-5400 (electronic mail:mirza@vnet.ibm.com). Dr. Mirza is currently a system architect in the POWER Parallel Division and works on various aspects of the architecture definition and system design for future SP2 systems. Since joining IBM in 1982, he has held several technical and management positions in the design and development of system products for the technical computing market. Prior to that, he was an assistant professor of computer science at the Polytechnic Institute of New York, Brooklyn. Dr. Mirza has a B. Tech. degree from the Indian Institute of Technology, Kharagpur, India, and M.S. and Ph.D. degrees in computer science from the Polytechnic Institute of New York, Brooklyn.

David C. Sadler IBM POWER Parallel Division, Highly Parallel Supercomputing Systems Laboratory, 522 South Road, Poughkeepsie, New York 12601-5400 (electronic mail:dsadler@vnet.ibm.com). Mr. Sadler is currently a member of the Parallel Architecture and System Design Department where he has been working on the definition of languages, architecture, and system design for scalable parallel RISC-based systems. Prior to joining the Parallel Architecture and System Design Department he managed the initial software development effort for the SP1 for the communication subsystem and the parallel programming environment. Mr. Sadler received his B.S. in mathematics from the Pennsylvania State University in 1967. He joined IBM in 1967 and has held various technical and management positions within IBM. He managed the development activities for IBM for 4700 COBOL, 4700 C, 4700 Assembler, IBM Clustered FORTRAN, Enhanced Clustered FORTRAN, 4700 Host Support programs, network management tools for distributed systems, and 4700 microcode development. He has held technical and management positions within IBM's supercomputer and parallel programming efforts since 1986.

Daniel M. Dias IBM Research Division, Thomas J. Watson Research Center, P.O. Box 704, Yorktown Heights, New York 10598. Dr. Dias received the B. Tech. degree from the Indian Institute of Technology, Bombay, India, and the M.S. and Ph.D. degrees from Rice University, Houston, Texas, all in electrical engineering. He currently manages the Parallel Commercial Systems group at the IBM Thomas J. Watson Research Center, which includes exploratory systems architecture, design, and analysis, in the areas listed below, with a focus on reducing these ideas to working prototypes and products. His current research includes highly available clustered systems, parallel and distributed systems, video server architectures, parallel transaction and query processing, reliable disk architectures, interconnection networks, and performance analysis. Dr. Dias has published more than 100 papers in refereed journals and conferences. He has won two best paper awards, IBM Outstanding Innovation and Technical Achievement Awards, five Invention Achievement Awards, and Research Division awards. He holds eight U.S. patents, with four additional patents pending.

Marc Snir IBM Research Division, Thomas J. Watson Research Center, P.O. Box 218, Yorktown Heights, New York 10598 (electronic mail:snir@watson.ibm.com). Dr. Snir is senior manager at the IBM Thomas J. Watson Research Center, where he leads research on scalable parallel software and on scalable parallel architectures. He recently led the Vulcan software effort and the initial design and prototyping of parallel software for the IBM SP1. He received a Ph.D. in mathematics from the Hebrew University of Jerusalem in 1979. He worked at New York University (NYU) on the NYU Ultracomputer project from 1980-1982 and worked at the Hebrew University of Jerusalem from 1982-1986. He has published on computational complexity, parallel algorithms, parallel architectures, interconnection networks, and parallel programming environments. He recently contributed to High Performance FORTRAN and to the Message-Passing Interface. Dr. Snir is a member of the IBM Academy of Technology, a senior member of IEEE, and a member of ACM and SIAM.