Biographical sketches of authors

Wolfgang Gellerich IBM Systems and Technology Group, IBM Deutschland Entwicklung GmbH, Schoenaicherstrasse 220, 71032 Boeblingen, Germany (gellerich@de.ibm.com). Dr. Gellerich studied computer science and chemistry at the University of Erlangen-Nuernberg and graduated in 1993 with an M.A. degree in computer science. Until 1999, he was with the programming languages group of Stuttgart University, where he received a Ph.D. degree. Dr. Gellerich joined the IBM Development Laboratories at Boeblingen in 2000. He is with the Firmware Development Group, where his main responsibility currently is the development of GNU PL8.

Torsten Hendel IBM Systems and Technology Group, IBM Deutschland Entwicklung GmbH, Schoenaicherstrasse 220, 71032 Boeblingen, Germany (hendel@de.ibm.com). Mr. Hendel studied software engineering at the University of Stuttgart and graduated in 2001 with an M.A. degree in computer science. In 2001 he joined IBM, where he works mainly in firmware development.

Rudolf Land IBM Systems and Technology Group, IBM Deutschland Entwicklung GmbH, Schoenaicherstrasse 220, 71032 Boeblingen, Germany (land@de.ibm.com). Mr. Land is a Senior Technical Staff Member in the Hardware Development Group, responsible for platform architecture and system design of IBM eServers. He studied mathematics at the universities of Aachen, Columbus, and Cologne, where he graduated with a thesis on computational algebra in 1979. He joined IBM in 1981 in the Server Hardware Development organization, where he held various positions in S/390 microcode development, system design, and system integration.

Helge Lehmann IBM Systems and Technology Group, IBM Deutschland Entwicklung GmbH, Schoenaicherstrasse 220, 71032 Boeblingen, Germany (hhlehmann@de.ibm.com). Dr. Lehmann is an Advisory Engineer in hardware development, where he is working on future strategies in the I/O area for zSeries systems. He studied mathematics and physics at the University of Cologne, where he received a Ph.D. degree for numerical solutions of partial differential equations. In 1985, he joined IBM and since that time has worked primarily with channel subsystem design and I/O configuration definition for S/370, S/390, and zSeries systems.

Michael Mueller IBM Systems and Technology Group, IBM Deutschland Entwicklung GmbH, Schoenaichestrasse 220, 71032 Boeblingen, Germany (mulm@de.ibm.com). Mr. Mueller is a Senior Technical Staff Member responsible for the platform architecture and design of the reliability, availability, and serviceability of IBM iSeries, pSeries, and zSeries eServers. He studied electrical engineering at the University of Stuttgart, receiving his Dipl. Ing. degree in 1985. He joined IBM in 1985, working in the S/370 Product Assurance Test Laboratory at Boeblingen. He has held various positions in S/390 microcode development and system design.

Peter H. Oden IBM Research Division, Thomas J. Watson Research Center, P.O. Box 218, Yorktown Heights, New York 10598 (oden@us.ibm.com). Dr. Oden is a Research Staff Member in the Systems Department at the Thomas J. Watson Research Center. He received an A.B. degree from Columbia College in 1955, and M.S. and Ph.D. degrees in electrical engineering from Columbia University in 1958 and 1966, respectively. In 1963 he joined IBM at the Thomas J. Watson Research Center, where he has worked on design automation, programming languages and compilers, and computer microarchitecture. In 1968, he received an IBM Outstanding Contribution Award for his work on design automation, and in 1981 an IBM Research Outstanding Technical Achievement Award for work on compilers. Dr. Oden is an author or co-author of several patents and technical papers.

Hartmut Penner IBM Systems and Technology Group, IBM Deutschland Entwicklung GmbH, Schoenaicherstrasse 220, 71032 Boeblingen, Germany (hpenner@de.ibm.com). Mr. Penner studied computer science at the University of Kaiserslautern and graduated in 1996 with an M.A. degree. He joined IBM in 1996 and worked in firmware development, commencing shortly after the zSeries back end for GCC and working on the Linux port for zSeries. He is currently responsible for the zSeries back end within and outside IBM.