A Chinese supercomputer capable of operating at 33.86 petaflop/s has retained the title of world's fastest supercomputer, beating competitors from both the US and Japan.
The Tianhe-2, built by China's National University of Defence Technology in Guangzhou, can perform at 33.86 petaflop/s.
This is the equivalent of performing 33,863 trillion calculations per second and is almost double the score achieved by the second most powerful machine: the American Titan supercomputer, which clocked in at 17.59 petaflop/s.
Tianhe-2 retained its position as the world's No 1 system, according to the 42nd edition of the Biannual TOP500 list of the world's most powerful supercomputers announced Monday
Titan, a Cray XK7 system installed at the Department of Energy's (DOE) Oak Ridge National Laboratory, remains the No 2 system. It achieved 17.59 Pflop/s on the Linpack benchmark.
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, according to the list.
Sequoia, an IBM BlueGene/Q system installed at DOE's Lawrence Livermore National Laboratory, is again the No 3 system. It was first delivered in 2011 and achieved 17.17
Plop/s on the Linpack benchmark. Fujitsu's K computer installed at the RIKEN Advanced Institute for Computational Science (AICS) in Kobe, Japan, is the No 4 system with 10.51 Pflop/s on the Linpack benchmark.
Mira, a BlueGene/Q system installed at DOE's Argonne National Laboratory, is No 5 with 8.59 Plop/s on the Linpack benchmark.
The new entry in the TOP10 is at No 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.
Piz Daint, which achieved 6.27 Pflop/s is also the most energy efficient system in the TOP10 consuming a total of 2.33 MW and delivering 2.7 Gflops/W.
Stampede at the Texas Advanced Computing Center of the University of Texas, Austin, slipped to No 7; while as a BlueGene/Q system called JUQEEN installed at the Forschungszentrum Juelich in Germany is No 8.
Number 9 is taken by Vulcan, another IBM BlueGene/Q system at Lawrence Livermore National Laboratory; and No 10 is the third system in Europe,