Biographical sketches of authors

Tobias Webel IBM Server Group, IBM Deutschland Entwicklung GmbH, Schoenaicherstrasse 220, 71032 Boeblingen, Germany (webel@de.ibm.com). Mr. Webel received his B.S. and M.S. degrees in electrical engineering from the University of Stuttgart in 1991 and 1995, respectively. He joined IBM in 1995 to work on logic design for advanced system initialization and system run-control structures starting with the IBM S/390* G5 system. He is one of the leading design engineers for the transition of the system run-control structure to a multibook system including reliability, availability, and serviceability (RAS) aspects, such as concurrent maintenance support. Mr. Webel is currently responsible for the clock chip design of the IBM zSeries G8 system.

Thomas E. Gilbert IBM Systems and Technology Group, 2455 South Road, Poughkeepsie, New York 12601 (tegilber@us.ibm.com). Mr. Gilbert joined IBM in 1974 and has held many technical and management positions. He is currently a Senior Engineer in S/390 hardware design verification working on the CMOS clock chip and system integration of the S/390 systems. His previous verification experiences include leading a team and verification of areas on various S/390 systems and CMOS channels. He has been working in design verification since 1984. Mr. Gilbert received an IBM Outstanding Innovation Award for his work on I/O subsystem drivers, an IBM Outstanding Technical Achievement Award for his work on scan ring modeling, and a Team Award for this work on the S/390 G3 common chip verification. He recently received IBM Outstanding Innovation Awards for his ABIST and LBIST verification on S/390 systems.

Dietmar Schmunkamp IBM Server Group, IBM Deutschland Entwicklung GmbH, Schoenaicherstrasse 220, 71032 Boeblingen, Germany (schmunkamp@de.ibm.com). Mr. Schmunkamp studied electrical engineering at the Technische Hochschule Darmstadt and received his graduate degree in 1984, joining IBM that same year. He has been working on the design of CMOS microprocessors since that time, with special interests in clocking and service interface. He is a member of the Association for Electrical, Electronic, and Information Technologies (VDE) and holds two patents in the area of clocking and RAS. Mr. Schmunkamp is currently working as a team leader on future run-control designs.