Sunway TaihuLight

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Coordinates: 31°32′55.01″N 120°14′52.94″E / 31.5486139°N 120.2480389°E / 31.5486139; 120.2480389

Sunway TaihuLight
Active June 2016
Operators National Supercomputing Center in Wuxi
Location National Supercomputer Center, Wuxi, Jiangsu, China
Architecture Sunway
Power 15 MW (LINPACK)
Operating system Sunway RaiseOS 2.0.5 (based on Linux)
Memory 1.31 PB (5591 TB/s total bandwidth)
Storage 20 PB
Speed 1.45 GHz (3.06 TFlops single CPU, 105 PFLOPS LINPACK, 125 PFLOPS peak)
Cost 1.8 billion Yuan (US$273 million)
Purpose Oil prospecting, life sciences, weather forecast, industrial design, pharmaceutical research
Web site

The Sunway TaihuLight (Chinese: 神威·太湖之光, Shénwēi·tàihú zhī guāng) is a Chinese supercomputer which, as of March 2018, is ranked number one in the TOP500 list as the fastest supercomputer in the world,[1][2][3] with a LINPACK benchmark rating of 93 petaflops.[4] This is nearly three times as fast as the previous holder of the record, the Tianhe-2, which ran at 34 petaflops. As of June 2017, it is ranked as the 16th most energy-efficient supercomputer in the Green500,[5] with an efficiency of 6.051 GFlops/watt. 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.[2][4]


The Sunway TaihuLight uses a total of 40,960 Chinese-designed SW26010 manycore 64-bit RISC processors based on the Sunway architecture.[6] Each processor chip contains 256 processing cores, and an additional four auxiliary cores for system management (also RISC cores, just more fully featured) for a total of 10,649,600 CPU cores across the entire system.[6]

The processing cores feature 64 KB of scratchpad memory for data (and 16 KB[6] for instructions) and communicate via a network on a chip, instead of having a traditional cache hierarchy.[7]


The system runs on its own operating system, Sunway RaiseOS 2.0.5, which is based on Linux.[6] The system has its own customized implementation of OpenACC 2.0 to aid the parallelization of code.[8]

See also[edit]


  1. ^ "TOP500 - November 2017". TOP500 - November 2017. TOP500. Retrieved Mar 5, 2017. 
  2. ^ a b Clark, Jack; King, Ian (2016-06-20). "World's Fastest Supercomputer Now Has Chinese Chip Technology". Retrieved 2016-06-20. 
  3. ^ "China builds world's most powerful computer". BBC News. 2016-06-20. Retrieved 2016-06-20. 
  4. ^ a b "China Tops Supercomputer Rankings with New 93-Petaflop Machine". Retrieved 2016-06-20. 
  5. ^ "The Green500 List - June 2017". Green500. 
  6. ^ a b c d Dongarra, Jack (2016-06-20). "Report on the Sunway TaihuLight System" (PDF). Retrieved 2016-06-20. Each CPE Cluster is composed of a Management Processing Element (MPE) which is a 64-bit RISC core which is supporting both user and system modes, a 256-bit vector instructions, 32 KB L1 instruction cache and 32 KB L1 data cache, and a 256KB L2 cache. The Computer Processing Element (CPE) is composed of an 8×8 mesh of 64-bit RISC cores, supporting only user mode, with a 256-bit vector instructions, 16 KB L1 instruction cache and 64 KB Scratch Pad Memory (SPM). [..] Each CPE has a 64 KB local (scratchpad) memory, no cache memory. The local memory is SRAM. There is a 16KB instruction cache. Each of the 4 CPE/MPE clusters has 8 GB of DDR3 memory. So a node has 32 GB of primary memory. Each processor connects to four 128-bit DDR3-2133 memory controllers, with a memory bandwidth of 136.51 GB/s. 
  7. ^ Lendino, James (2016-06-20). "Meet the new world's fastest supercomputer: China's TaihuLight". Extremetech. Retrieved 2016-06-21. The TOP500 report said that the chip also lacks any traditional L1-L2-L3 cache, and instead has 12KB[sic] of instruction cache and 64KB “local scratchpad” that works sort of like an L1 cache. 
  8. ^ Fu, Haohuan; Liao, Junfeng; Yang, Jinzhe; Wang, Lanning; Song, Zhenya; Huang, Xiaomeng; Yang, Chao; Xue, Wei; Liu, Fangfang; Qiao, Fangli; Zhao, Wei; Yin, Xunqiang; Hou, Chaofeng; Zhang, Chenglong; Ge, Wei; Zhang, Jian; Wang, Yangang; Zhou, Chunbo; Yang, Guangwen (2016). "The Sunway TaihuLight Supercomputer: System and Applications". Sci. China Inf. Sci. doi:10.1007/s11432-016-5588-7. Retrieved 2016-06-22. 

External links[edit]

Preceded by
33.9 petaflops
World's most powerful supercomputer
June 2016 – June 2018
Succeeded by
200 petaflops