Supercomputers/Systems/KISTI GAIA
South Korea · operational · hpc
KISTI GAIA
Also known as Gaia 2; KISTI IBM p6 595; GAIA Power 595
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: 1263 of 1345 systems have a readable citation that names them, and 56 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
- 23.37 TFlop/s
- Rpeak
- 30.72 TFlop/s
- Rmax ÷ Rpeak
- 76.1%
- Cores
- 1,536
- Power
- 480 kW
- Per watt
- 0.0 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 | - IBM Power 595 (p6 595), 24 nodes | IBM | - | Verified | ksc.re.krtop500.org |
| CPU | - IBM POWER6 5GHz, 1,536 CPUs | IBM | 1,536 reported | Verified | ksc.re.krtop500.org |
| Operating system | IBM AIX Operating systems Unix (System V-derived) · Proprietary IBM AIX | IBM | - | Reported | top500.org |
The read
Shared-memory part of Korea's fourth national supercomputer at KISTI: Gaia 2, an IBM Power 595 (p6 595) with 24 nodes and 1,536 POWER6 5 GHz CPUs, 9.2 TB of memory, 30.7 TFlop/s theoretical peak and 336 TB of storage, per the KISTI National Supercomputing Center history page (which dates the fourth system generation 2008 to 2017 and lists Gaia 1, a 5.9 TFlop/s POWER5+ system, separately). TOP500 lists the same 1,536 cores on InfiniBand under AIX, 23.37 TFlop/s Rmax, 30.72 TFlop/s Rpeak and 480 kW, in 395th place on the November 2009 list, its only appearance. Status is held as of that list because no retirement date for Gaia 2 itself was found.
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
Change history
- 2026-10-09 Added KISTI GAIA
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 |
|---|---|---|
| ksc.re.kr | names system only | - |
| top500.org | names system only | - |
Checked 2026-10-13 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.
Programming a supercomputer
The software stack beneath the application, and why the OS is now a sovereignty signal as much as a technical choice.