The new Top500 Supercomputing Site List was released June 27 at the 2007 International Supercomputing Conference, held in Dresden, Germany.  This list ranked the Cray XT4 Leadership Computing system at Oak Ridge at number two overall – the second fastest computer in the world - behind a Department of Energy classified system, the ASC IBM Blue Gene L at Lawrence Livermore National Lab.  This makes the ASCR leadership computer at Oak Ridge, dubbed “Jaguar”, the fastest computer in the world for open science.   More>