China takes fastest supercomputer crown

China takes fastest supercomputer crown

PORTLAND, Ore.—China has retaken the top slot on the twice-yearly Top500 List of supercomputers announced this week at the International Supercomputing Conference in Leipzig, Germany. The top high-performance computer (HPC) was China's Tianhe-2 (MilkyWay-2), which houses 3.12 million Intel Xeon and Xeon Phi cores, over five-times as many as the AMD/Nvidia powered second place Titan at Oak Ridge National Laboratory, and almost twice as many as the third-place IBM-powered Sequoia at Lawrence Livermore National Laboratory.

Milky-Way-2, offering over 50-petaFLOPS of performance, will power the National Supercomputer Center in Guangzho, China. Its 3.12 million cores are spread across 32,000 octal-core 22-nanometer Intel Xeon E5-2600 processors and 48,000 Intel Xeon Phi coprocessor cards. The architecture is divided among 16,000 nodes each with two Intel Xeon Ivy Bridge processors and three Xeon Phi processors. Milky-Way-2's peak performance of 54.9 petaFLOPS can be sustained indefinitely at 33.86 petaFLOPS on the standard Linpack benchmark.

The second place Titan, which was booted out of the top slot it won last year, was based on a Department of Energy (DoE) Cray-XK7 at Oak Ridge National Laboratory, and ran at 27 petaFLOPS peak (17.6 sustained) using over 18,688 AMD 16-core Opteron 6274 main processors and 261,632 of its NVIDIA K20x coprocessor cores, for a total of 560,640 cores.

The third-place Sequoia was based on an IBM BlueGene/Q supercomputer at the DoE's Lawrence Livermore National Laboratory, which won second-place last year, and ran at 20 petaFLOPS peak (17.2 sustained) using 98,304 Power BQC 16-core processors for a total of 1,572,864 cores.

The other top 10 supercomputers, in order of rank, include the Fujitsu's "K Computer" at the RIKEN Advanced Institute for Computational Science (Kobe, Japan), using 705,024 SPARC64 cores, a second BlueGene/Q system, called Mira, at Argonne National Laboratory with 786,432 cores, the Stampede at the Texas Advanced Computing Center (Austin) with 462,462 cores, the JUQUEEN at the Forschungszentrum Juelich Laboratory (Germany) with 458,752 cores, another IBM BlueGene/Q system at Lawrence Livermore National Laboratories with 393,216 cores, the SuperMUC, an IBM iDataplex at Leibniz Rechenzentrum (Germany) with 147,456, and the November 2010 winner, and predecessor to the MilkyWay-2, the MilkyWay-1A at the National Supercomputing Center (Tianjin, China) with 186,368 cores.

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