A Chinese supercomputer has retained the crown of world’s fastest supercomputer, beating competitors from both Japan and the US.The Tianhe-2 was built by
China's National University of Defence Technology in Guangzhou and is capable of operating 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.
The list of the world’s fastest supercomputer is compiled biannually by the
University of Mannheim in Germany, using a test known as the Linpack benchmark.