Communications of the ACM
Two Rival Supercomputers Duke It Out For Top Spot
ORNL's upgraded Jaguar is based on the Cray XT5 Linux supercomputer platform, which uses Advanced Micro Devices Opteron processors. Its total peak capability is 2.3 petaflops per second.
Credit: Oak Ridge National Laboratory
A Cray supercomputer at Oak Ridge National Laboratory has regained the title of the world's most powerful supercomputer, overtaking the installation that was ranked at the top in June 2009, while China entered the Top 10 with a hybrid Intel-AMD system.
The upgraded Jaguar supercomputer at Oak Ridge, in Tennessee, now boasts a speed of 1.759 petaflops per second from its 224,162 cores, while the IBM Roadrunner system at the U.S. Department of Energy's Los Alamos National Laboratory in New Mexico slowed slightly to 1.042 petaflops per second after it was repartitioned. A petaflop is one thousand trillion calculations per second.
The list of the Top 500 supercomputers, released on Monday during the SC09 supercomputing conference in Portland, Oregon, is compiled twice a year and is now in its 34th installment. The total capacity of the systems on the new list is 27.6 petaflops, up from 22.6 petaflops on the previous list in June.
From IDG News Service
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