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JOHNNY CHANG – NASA Ames Research Center/CSC. Johnny is a member of the Application Performance and Productivity group at the NASA Advanced Supercomputing (NAS) Division located in Moffett Field, California. He is part of a group that provides consulting service to the 700+ users of the Columbia supercomputer – a luster of twenty 512p SGI Altix systems. His work includes code porting, debugging, tuning and optimization, and code scaling. Johnny received his PhD in Chemical Physics from the University of Texas at Austin, in 1985. He has published papers in multi-photon dynamics, quantum scattering, pathintegral methods, quantum functional sensitivity analysis, and, most recently, weather modeling.
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