Kraken, a Cray XT5 system, is the world's sixth-fastest computer. Photo/Adam BrimerFrom PC World:
The top two systems on June's list of the Top 500 supercomputers swapped places on the latest list, released Monday.
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, 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.
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