IBM ends China’s 5-year reign atop supercomputer rankings

There’s a shake-up – and a scandal – in the Top500 ranking of the world’s most powerful supercomputers.

The U.S. has retaken first place in the Top500 list after five years of dominance by China. Computers built by IBM for the U.S. Department of Energy have pushed the previous two record-holders, both Chinese, into second and fourth place.

But the previous fourth placeholder, Japan’s Gyoukou, is nowhere to be found, after one of its creators was arrested on suspicion of fraud.


Washout: ExaScaler’s immersion-cooled Gyoukou supercomputer has been wiped from the Top500 list of the world’s fastest supercomputers after Japan’s Agency for Marine-Earth Science and Technology cancelled its contract.

The world’s fastest computer is now Summit, built by IBM for the DoE’s Oak Ridge National Laboratory, with a performance of 122.3 petaflops (floating point operations per second).

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