South Korea switches on Hangang, a 614-petaflop supercomputer built for AI science
South Korea's Ministry of Science and ICT and the Korea Institute of Science and Technology Information (KISTI) held the launch ceremony for national supercomputer No. 6, "Hangang," at KISTI's Daejeon headquarters on Monday, Nov. 2, 2026 (Sunday evening, Nov. 1, US Eastern time). It succeeds Nurion, the No. 5 system that went into service in 2018.
National supercomputers used to be about weather models and crash simulations. This one is explicitly a GPU machine for AI-flavored science, which tells you where governments think research is going. The numbers are big, and so is the fine print: about two years late, a price tag that ballooned as GPU costs climbed, and a top-10 claim that is still a forecast until the TOP500 list drops. Still, 8,000-plus Nvidia superchips set aside for universities, labs, and small companies is real capacity in a world where most of it belongs to a handful of hyperscalers, the giant cloud companies.
The Ministry of Science and ICT and KISTI held a launch ceremony for Hangang, Korea's sixth national supercomputer, at KISTI's headquarters in Daejeon on Nov. 2, 2026, at 10:00 Korea Standard Time. About 200 people from industry, academia, and research institutes attended, including Kim Seong-su, the ministry's head of R&D policy, and KISTI president Lee Sik. Those lines are the ministry's, from the launch.
The hardware count is 8,496 GPUs, graphics processors: 8,336 Nvidia GH200 superchips, each pairing a central processor with a graphics chip, plus 160 Nvidia H200s, and 9,936 CPUs, ordinary processors. Theoretical peak performance is 614 petaflops. A petaflop is a quadrillion calculations per second, and theoretical peak is the speed on the spec sheet. Storage is 205 petabytes. Network speed is above 400 gigabits per second. HPE built the system. The contract was signed in May 2025. Those figures are the launch's.
Hangang succeeds Nurion, national supercomputer No. 5, which went into service in 2018 and ended operations at the end of October. Nurion was a CPU machine. Hangang adds GPU capacity for research that uses AI. The ministry's comparison with Nurion is 24 times the theoretical compute, against Nurion's 25.7 petaflops, 10 times the storage, and 4 times the network bandwidth. Nurion ranked 11th in the world when it was introduced. Over eight years it supported 1,730 research projects and 1,520 SCI(E) papers, papers in the Science Citation Index, including 70 in Nature, Science, Cell, and their sister journals. Those comparisons and that record are the launch's.
The ministry expects Hangang to land around the top 10 of the TOP500 list of the world's fastest supercomputers, the ranking to be announced at the SC2026 conference in early November. That is an expectation. The list has not ranked Hangang, and the launch gives a theoretical peak rather than a measured placing. The forecast is the ministry's.
The national high-performance computing committee, the group that assigns time on these machines, approved a split: about 30 percent for national strategic projects, including Korea's K-Moonshot program, about 55 percent for general academic and research work, and about 15 percent for industry, including incubation support for small companies and startups. That split is the committee's.
A pilot, a beta service, opened on Oct. 26 after a call for researchers that began in September. Official service is scheduled to open on Dec. 14, 2026. The ceremony was the launch. The open service for users is still ahead of that date. Those dates are the ministry's.
The Herald Business reports the machine cost about 450 billion won, about $337 million, and that construction ran about two years behind schedule. Those figures are The Herald Business's.
Lee Sik, the KISTI president, said Hangang should become "a foundation" for researchers' challenging work, and that KISTI will focus on "stable operation and user support." Kim Seong-su, of the Ministry of Science and ICT, called Hangang "core infrastructure" that supports the convergence of AI and science and will "lead new scientific discoveries." Those quotations are theirs.
The picture is Hangang: a long row of black HPE Cray cabinets bearing the Ministry of Science and ICT, KISTI, HPE, and NVIDIA marks, with HANGANG lettered in large white type along the side. The credit is the Korea Institute of Science and Technology Information. It is the handout photo distributed with the launch.
In plain terms, South Korea held the launch for a national supercomputer built around 8,496 Nvidia graphics chips, with a spec-sheet speed of 614 petaflops, and assigned most of the time to universities and labs plus a slice for smaller companies. It replaces Nurion, the 2018 machine that shut down at the end of October. The ministry expects a place around the top 10 of the next world ranking. That ranking is still ahead. Official service is scheduled for Dec. 14, and The Herald Business puts the cost at about $337 million after a build that ran about two years late.




















