The Chinese Tianhe-1A system at the National Supercomputer Center in Tianjin has taken the top spot in the Top500 supercomputer list. The 2.57petaflop/s (quadrillions of calculations per second), Nvidia-powered Tianhe-1A knocked Cray's XT5 "Jaguar" system at the U.S. Department of Energy's (DOE) Oak Ridge Leadership Computing Facility off the top spot. The Cray ranked in second place, with Jaguar achieving 1.75petaflop/s.
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Third place is now held by a Chinese system called Nebulae, located at the National Supercomputing Centre in Shenzhen. Nebulae performed at 1.27petaflop/s.
Tsubame 2.0, at the Tokyo Institute of Technology, came in fourth with a performance of 1.19petaflop/s. Tsubame is the only Japanese machine in the TOP10.
The fifth most powerful supercomputer was Hopper, a Cray XE6 system at DOE's National Energy Research Scientific Computing (NERSC) Center in California. Hopper just broke the petaflop/s barrier with 1.05petaflop/s, making it the second most powerful system in the US.
Seventeen systems on the TOP500 use GPUs as accelerators. Six used the Cell processor, 10 of them used NVIDIA chips and one used ATI Radeon chips.