Dominant countries in Asia are China with 63 systems (down from 65) and Japan with 28 systems (down from 30). The European share (102 systems compared to 112 last time) is still lower than the Asian share (115 systems, down from 118 last time). is clearly the leading consumer of HPC systems with 265 of the 500 systems (253 last time). 2 position in the performance share, topping Japan. Due to Tianhe-2, China this year also took the No. but ahead of Japan, UK, France, and Germany. China occupies the 2nd position as a user of HPC, behind the U.S. The number of systems installed in China has now stabilized at 63, compared with 65 on the last list. Intel continues to provide the processors for the largest share (82.4 percent) of TOP500 systems. In all, there are 31 systems with performance greater than a petaflop/s on the list, an increase of five compared to the June 2013 list. Half of the total performance is achieved by the top 17 systems on the list, with the other half of total performance spread among the remaining 483 systems. The total combined performance of all 500 systems on the list is 250 Pflop/s. Piz Daint is also the most energy efficient system in the TOP10 consuming a total of 2.33 MW and delivering 2.7 Gflops/W. Piz Daint achieved 6.27 Pflop/s on the Linpack benchmark. 6 –Piz Daint, a Cray XC30 system installed at the Swiss National Supercomputing Centre (CSCS) in Lugano, Switzerland and now the most powerful system in Europe. Titan is one of the most energy efficient systems on the list consuming a total of 8.21 MW and delivering 2.143 gigaflops/W. It achieved 17.59 Pflop/s on the Linpack benchmark. Titan, a Cray XK7 system installed at the Department of Energy’s (DOE) Oak Ridge National Laboratory, remains the No. 1 system with a performance of 33.86 petaflop/s (quadrillions of calculations per second) on the Linpack benchmark, according to the 42nd edition of the twice-yearly TOP500 list of the world’s most powerful supercomputers. Tianhe-2, a supercomputer developed by China’s National University of Defense Technology, retained its position as the world’s No. India accounts for 12 systems in the TOP500 list of the world’s most powerful supercomputers with its topmost entry claiming the 44th rank. China's Tianhe-2 Stays on Top as the World's No.1 Supercomputer
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