John L. Gustafson leads the HPC workload
characterization effort at Sun Labs. He joined Sun in 1999 after many years
developing novel computer measurement approaches at Sandia and Ames Laboratory.
Dr. Gustafson has won three R&D 100awards and has several patents, all in
the area of computer system performance. His 1987 work with colleagues Gary
Montry and Robert Benner at Sandia showed that the assumptions of "Amdahl's
law" might not be appropriate for many HPC workloads, and introduced the
paradigm referred to as "Gustafson's law" that removes unnecessarily
pessimistic predictions about massively parallel computing performance.