Developed by the Chinese National University of Defense Technology, the Tianhe-A1 was knocked off the top of the list in June by the K Computer. Powered by more than 14,000 Xeon X5670 chips and more than 7,000 GPUs from Nvidia, the system, installed at the National Supercomputing Center in Tianjin, has hit a peak of 2.5 petaflops.
Installed at the Oak Ridge National Laboratory in Tennessee, the Jaguar supercomputer is powered by Crays XT5-HE technology powered by AMDs six-core Opteron chips. The system, which has hit a peak of about 1.75 petaflops, is about to be revamped by Cray using AMDs new 16-core Opteron 6200 chips and GPUs from Nvidia. Once completed, the new system—dubbed Titan—will have theoretical peaks of 10 to 20 petaflops.
Another Cray supercomputer, this one for the National Energy Research Scientific Computing Center at the Lawrence Berkeley National Laboratory. It leverages Crays XE6 systems, which are powered by AMDs 12-core Opteron 6172 processors. The system, with a total of 153,408 cores, offers a performance of 1.05 petaflops.
The IBM-built supercomputer, installed at the Los Alamos National Laboratory, is a cluster of BladeCenter systems powered by Big Blues 3.2GHz PowerXCell 8i and AMDs dual-core Opteron chips. Its performance is listed at 1.04 petaflops.