| John Shalf, head of NERSC’s Science-Driven System Architecture team, delivered the keynote address at the Fourth International Workshop on Automatic Performance Tuning (iWAPT2009), October 1–2 at the University of Tokyo, Japan. Shalf’s talk, “Green Flash: Exascale Computing on a Petascale Power Budget” described the Green Flash research project, which is developing an energy-efficient computing architecture that uses autotuning methods for both hardware and software optimization. |