Supercomputers/Systems/Haeon
South Korea · decommissioned · hpc
Haeon
Also known as KMA Cray XE6 (operational system)
Operated by Korea Meteorological Administration .
Phase 1 seed dataset, compiled by hand. These rows were built from public operator, laboratory and vendor sources. A mechanical second-reader pass has since fetched every cited source: 1092 of 1153 systems have a readable citation that names them, and 40 are genuinely weakly sourced. Every claim carries its source and a confidence tier. Treat anything below verified as a lead, not a citation.
Measured performance
- Rmax
- 316.40 TFlop/s
- Rpeak
- 379.01 TFlop/s
- Rmax ÷ Rpeak
- 83.5%
- Cores
- 45,120
- Power
- 1.71 MW
- Per watt
- 0.2 GF/W
Figures are as last publicly reported for the configuration described below, not a live measurement. Where a system was upgraded in place, the post-upgrade configuration is shown and the earlier one appears in the timeline.
What this machine is made of
One row per supplier relationship. “Supplier at build” is the company that shipped the part at the time; where that company has since been acquired, the parent it rolls up to today is shown beside it. That distinction is what makes ticker-level aggregation possible across a thirty-year dataset.
| Role | Part | Supplier at build | Quantity | Confidence | Source |
|---|---|---|---|---|---|
| Integrator | - Cray XE6 | Cray HPENYSE
rolls up to Hewlett Packard Enterprise | - | Reported | top500.orgdigitalengineering247.com |
| CPU | - AMD Opteron 6172 12C 2.1GHz | AMD | - | Reported | top500.org |
| Interconnect | - Cray Gemini interconnect | Cray HPENYSE
rolls up to Hewlett Packard Enterprise | - | Reported | top500.org |
The read
The operational half of the Korea Meteorological Administration's 2010 Cray XE6 pair: Opteron 6172 12-core 2.1 GHz CPUs on the Cray Gemini interconnect. TOP500 lists 45,120 cores, 316.4 TFlop/s Rmax, 379.01 TFlop/s Rpeak and 1,711.6 kW, 19th on the November 2010 list; a twin KMA system, Haenuri, is listed at 20th beside it. Cray's contract announcement, reproduced by Digital Engineering, gives a multi-year deal worth more than $40 million, delivery in two phases with acceptance in the second half of 2010, and a peak above 600 TFlop/s; it does not name the XE6 model or the machine names, so the tier is reported. Status as of is the last TOP500 list it appeared on (June 2015); no retirement notice was found, and the machine room location is not on any page fetched, so no site is recorded.
Timeline
Public list appearances
Pointers only: rank and edition, linking to the canonical entry. We do not reproduce list tables. See sourcing policy.
Change history
- 2026-10-02 Added Haeon, the Korea Meteorological Administration's 2010 Cray XE6
Source check
We fetched this system's own citations and recorded whether each page actually mentions it. This is a corroboration signal, not a fact check, and it is published so you can see how well the sourcing holds up rather than take it on trust.
| Cited source | Result | Found on the page |
|---|---|---|
| top500.org | names system only | - |
| digitalengineering247.com | does not name this system | - |
Checked 2026-10-09 by pnpm verify. Re-run it and the table changes with the web.
Further reading
Operating a supercomputer
Acceptance testing, why "installed" and "in production" are six months apart, and the machine lifecycle.
Inside a node
Latency-optimised versus throughput-optimised processors, NUMA, and the end of the host-to-device copy.
The interconnect
Topologies, why latency and tail behaviour matter more than bandwidth, and how the fabric market consolidated.