Supercomputers/Systems/Miri
South Korea · operational · hpc
Miri
Also known as KMA Meteorological Supercomputer 4 (Miri)
Operated by Korea Meteorological Administration at KMA Supercomputer Centre (Ochang) .
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
- 2.40 PFlop/s
- Rpeak
- 2.90 PFlop/s
- Rmax ÷ Rpeak
- 82.8%
- Cores
- 69,600
- Power
- 1.36 MW
- Per watt
- 1.8 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 XC40 | Cray HPENYSE
rolls up to Hewlett Packard Enterprise | - | Reported | top500.orgweather.go.kr |
| CPU | Intel Xeon E5-2690 v3 CPUs x86-64 · 12C · 2.6 GHz · 22 nm · 135 W Intel Xeon E5-2690v3 12C 2.6GHz | Intel | - | Reported | top500.org |
| Interconnect | Cray Aries Interconnect Dragonfly · About 10 GB/s per direction · Around 1 microsecond Cray Aries interconnect | Cray HPENYSE
rolls up to Hewlett Packard Enterprise | - | Reported | top500.org |
| Operating system | Cray Linux Environment Operating systems Linux, Cray-customised · Proprietary layer over open-source Linux Cray Linux Environment | Cray HPENYSE
rolls up to Hewlett Packard Enterprise | - | Reported | top500.org |
The read
Twin of Nuri in the Korea Meteorological Administration's fourth-generation Cray XC40 system, listed with identical hardware: Xeon E5-2690v3 12C 2.6GHz, Aries, 69,600 cores, Rmax 2.40 PFlop/s, Rpeak 2.90 PFlop/s and 1,359.38 kW. It ranked 30th on the November 2015 TOP500 list and was last listed in November 2021 at rank 252. TOP500 news coverage of a KISTI order called Nuri and Miri the fastest supercomputers in South Korea at the time, at 2.4 petaflops of Linpack each. KMA's history page records the Cray XC40 stages (December 2014 and December 2015) and the Ochang supercomputer centre but not the machine names, so the tier is reported.
Timeline
Public list appearances
Pointers only: rank and edition, linking to the canonical entry. We do not reproduce list tables. See sourcing policy.
Site & facility
KMA Supercomputer Centre (Ochang)
- Location
- Ochang, Chungcheongbuk-do, South Korea
- Commissioned
- 2010
Change history
- 2026-10-07 Added Miri, the Nuri twin at the Korea Meteorological Administration
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 and part | Intel Xeon E5-2690 v3, Cray Aries, Cray Linux Environment |
| weather.go.kr | 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.