Supercomputers/Systems/Camphor 3
Japan · operational · hpc
Camphor 3
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
- 6.71 PFlop/s
- Rpeak
- 7.63 PFlop/s
- Rmax ÷ Rpeak
- 87.9%
- Cores
- 125,440
- Power
- 1.03 MW
- Per watt
- 6.5 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 | - NEC system integrator; Dell PowerEdge C6620 servers (1,120 nodes) | NEC | - | Verified | intel.comtop500.org |
| CPU | - Intel Xeon CPU Max 9480 56C 1.9GHz with HBM2e, two per node | Intel | - | Verified | top500.orgiimc.kyoto-u.ac.jp |
| Interconnect | NVIDIA InfiniBand NDR (Quantum-2) Interconnect Fat tree or dragonfly+ · 400 Gb/s per port · Under 0.6 microseconds InfiniBand NDR, 400 Gbps fabric | NVIDIA | - | Verified | top500.orgintel.com |
| Operating system | Red Hat Enterprise Linux Operating systems Linux distribution · Open source, commercial support subscription Red Hat Enterprise Linux | Red Hat | - | Reported | top500.org |
The read
Kyoto University's System A: 1,120 Dell PowerEdge C6620 nodes, each with two 56-core Intel Xeon CPU Max 9480 processors with HBM2e, on a 400 Gbps InfiniBand fabric, integrated by NEC. Camphor 3 became operational in October 2023, alongside Laurel 3 (370 Xeon Platinum 8480+ nodes, 2.65 PFlop/s) and Cinnamon 3 (16 large-memory nodes), which are not part of this entry. TOP500 gives Rmax 6.71, Rpeak 7.63 and 1,026.64 kW, and Kyoto's own specification page gives the same 7.63 PFlop/s peak. It debuted 113th in November 2023 and was 226th in November 2025. The centre is now called the Institute for Information Management and Communication, while TOP500 keeps the old ACCMS name. No page we fetched names the machine room location, 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 Camphor 3 added, verified on TOP500 and Kyoto University
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 | NVIDIA InfiniBand NDR (Quantum-2) |
| iimc.kyoto-u.ac.jp | names system only | - |
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.