IBM (NYSE: IBM)'s Roadrunner supercomputer at the Los Alamos National Laboratory held on to its title as the world's fastest computer, followed once again by Cray's Jaguar.
The biannual Top500 list, released Tuesday at the 2009 International Supercomputing Conference, also saw two new systems enter the top 10. Both systems -- the IBM BlueGene/P called Jugene and the Juropa, which is built from Novascale and Sun Microsystems Sun Blade x6048 server -- were at Forschungszentrum Juelich in Germany. The Jugene achieved 825.5 teraflops and the Juropa 274.8 teraflops. A teraflop is a trillion floating point operations per second.
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