Sunway TaihuLight
The Sunway TaihuLight is a Chinese supercomputer which, as of 2025, is ranked 24th in the TOP500 list, with a LINPACK benchmark rating of 93 petaflops. The name is translated as divine power, the light of Taihu Lake. This is nearly three times as fast as the previous Tianhe-2, which ran at 34 petaflops., it is ranked as the 16th most energy-efficient supercomputer in the Green500, with an efficiency of 6.1 GFlops/watt. It was designed by the National Research Center of Parallel Computer Engineering & Technology and is located at the National Supercomputing Center in Wuxi in the city of Wuxi, in Jiangsu province, China.
The Sunway TaihuLight was the world's fastest supercomputer for two years, from June 2016 to June 2018, according to the TOP500 lists. The record was surpassed in June 2018 by IBM's Summit.
Architecture
The Sunway TaihuLight utilizes domestically developed semiconductors, including a total of 40,960 Chinese-designed SW26010 manycore 64-bit RISC processors based on the Sunway architecture. Each processor chip contains 256 processing cores, and an additional four auxiliary cores for system management for a total of 10,649,600 CPU cores across the entire system.The processing cores feature 64 KB of scratchpad memory for data and communicate via a network on a chip, instead of having a traditional cache hierarchy.