US supers maintain grip on Top500 list as China seemingly hides its powers
American supercomputers continued to dominate the Top500 ranking of the world's mightiest silicon machines this northern spring, with Oak Ridge National Laboratory's Frontier remaining the only exascale system on the list.
China's last truly competitive system to grace the Top500 was the 61.4 petaflop Tianhe-2A, which debuted in 2018. The more powerful 93 petaflop Sunway TaihuLight is even older, having made its appearance on the Top500 ranking back in 2016.that the Chinese have several exascale-class systems capable of going toe-to-toe with the US's number-one ranked Frontier system. China just isn't talking about them.
China remains one of the biggest players, with 134 systems in the latest rankings. However, that number has shrunk. In 2023, China hasjust one new system. Holding the 185th spot, the Geely Wise Star Dubhe is a CPU-only system built by Lenovo for Geely Auto Group. By our count, it features roughly 1,280 32-core Sapphire Rapids Xeon Scalable processors good for 3.5 petaflops of performance in the Linpack benchmark.
There are a few ways to look at this. One is that US trade restrictions are having their intended effect. Many of China's national supercomputing centers have found themselves on the US Entities List and are thus subject to stiffer export controls on sensitive technologies like GPUs used in HPC and AI/ML applications.
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