Supercomputers/Systems/Camellia (Kyoto)
Japan · operational · hpc
Camellia (Kyoto)
Also known as Kyoto University System E; camellia Cray XC30
Operated by Kyoto University ACCMS .
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
- 380.50 TFlop/s
- Rpeak
- 581.28 TFlop/s
- Rmax ÷ Rpeak
- 65.5%
- Cores
- 33,600
- Power
- 165.3 kW
- Per watt
- 2.3 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 XC30 supercomputer supplied by Cray | Cray HPENYSE
rolls up to Hewlett Packard Enterprise | - | Reported | top500.orgiimc.kyoto-u.ac.jp |
| Accelerator | - Intel Xeon Phi 5120D coprocessors | Intel | - | Reported | top500.orgiimc.kyoto-u.ac.jp |
| CPU | - Intel Xeon E5-2670 v2 10C 2.5GHz | Intel | - | Reported | top500.orgiimc.kyoto-u.ac.jp |
| 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 |
The read
Kyoto University ACCMS's System E, a Cray XC30 (the Cascade system Cray said it would deliver to Kyoto in 2014) with 10-core 2.5 GHz Xeon nodes, Intel Xeon Phi coprocessors and the Aries network. Kyoto offered trial use on it until the end of 2014. It debuted 102nd on the June 2014 TOP500 with 380.5 TFlop/s and was last listed in November 2016.
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
- 2026-10-07 Added Camellia (Kyoto)
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 |
|---|---|---|
| iimc.kyoto-u.ac.jp | names system only | - |
| top500.org | names system and part | Cray Aries |
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.