Oak Ridge Today

China's Tianhe-2 supercomputer, which is housed at that nation's National University of Defense Technology, placed first on the Top500 supercomputer rankings released today at the SC13 Conference in Denver, and the U.S.'s Titan system housed at Oak Ridge National Laboratory ranked second, mirroring the top two spots from the previous rankings in June. The most recent rankings found that Tianhe-2 can perform at 33.86 petaflops, while Titan can achieve 17.59 petaflops. Titan also is one of the most energy-efficient systems on the list, consuming a total of 8.21 megawatts and delivering 2.143 gigaflops per watt. Lawrence Livermore National Laboratory's Sequoia system ranked third on the Top500 list, Fujitsu's K computer ranked fourth, and Argonne National Laboratory's Mira ranked fifth. Swiss National Supercomputing Center's Piz Daint system is a new entry in the Top10, with a peak performance rating of 627 petaflops. Piz Daint also is the most energy-efficient system in the Top10, consuming 2.33 megawatts and delivering 2.7 gigaflops per watt. Texas Advanced Computing Center's Stampede system ranked seventh, Forschungszentrum Juelich's JUQEEN ranked eighth, Lawrence Livermore National Laboratory's Vulcan ranked ninth, and Leibniz Rechenzentrum's SuperMUC ranked tenth. To read further, please visit http://oakridgetoday.com/2013/11/18/chinese-supercomputer-still-1-ornls-titan-2/.