The Sunway TaihuLight (Chinese: 神威·太湖之光 Shénwēi·tàihú zhī guāng) is a Chinese supercomputer which, as of November 2023[update], is ranked 11th in the TOP500 list,[1] with a LINPACK benchmark rating of 93 petaflops.

It was designed by the National Research Center of Parallel Computer Engineering & Technology (NRCPC) and is located at the National Supercomputing Center in Wuxi in the city of Wuxi, in Jiangsu province, China.

[8] The processing cores feature 64 KB of scratchpad memory for data (and 16 KB[8] for instructions) and communicate via a network on a chip, instead of having a traditional cache hierarchy.

[8] The system has its own customized implementation of OpenACC 2.0 to aid the parallelization of code.

[10] China's first exascale supercomputer was scheduled to enter service by 2020 according to the head of the school of computing at the National University of Defense Technology (NUDT).