1Sequoia Put U.S. Back on Top
IBM’s Blue Gene/Q supercomputer at the Lawrence Livermore National Laboratory hit a performance of 16.32 petaflops, putting the United States back on top of the Top 500 for the first time in almost three years. Sequoia, which is powered by more than 1.5 Power processing cores, also is the most energy-efficient system on the list.
2K Computer Now a Dethroned Champion
The K Computer, housed at the RIKEN Advanced Institute for Computational Science in Kobe, Japan, is now No. 2 on the list. The Fujitsu-based system, which was the first to break the 10-petaflop barrier and held the top spot for all of 2011, had a max performance of 10.51 petaflops. It’s powered by 705,024 SPARC64 processing cores.
At one time the fastest system in the world until it was knocked off its perch last year by the K Computer, the supercomputer—developed by the Chinese National University of Defense Technology—is powered by 186,368 Intel Xeon X5670 cores and more than 7,000 graphics processing units (GPUs) from Nvidia. It hit a maximum performance of 2.56 petaflops. It is installed at the National Supercomputing Center in Tianjin, China.
The recently upgraded system from Cray at the Oak Ridge National Laboratory in Tennessee had been the fastest U.S. system on the list from November 2011. The supercomputer includes Cray’s hybrid CPU-GPU XK6, which includes Opteron chips from AMD and GPUs from Nvidia. The system, with a top performance of 1.9 petaflops, also includes Cray’s Gemini interconnect.
No. 4 on the list from November 2011, Nebulae runs on Xeon X5650 processors and GPUs from Nvidia, with 120,640 processing cores and reaching a max performance of 1.27 petaflops. The supercomputer, built by Dawning, is installed at the National Supercomputing Center at Shenzhen in China.