Supercomputers/Systems/Raijin (NCI)
Australia · operational · hpc
Raijin (NCI)
Also known as NCI Raijin
Operated by NCI Australia at NCI Australia (Canberra) .
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
- 978.60 TFlop/s
- Rpeak
- 1.11 PFlop/s
- Rmax ÷ Rpeak
- 87.9%
- Cores
- 53,504
- Power
- 1.61 MW
- Per watt
- 0.6 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 | - Fujitsu PRIMERGY CX250 S1 | Fujitsu | - | Reported | top500.orgtheregister.com |
| CPU | Intel Xeon E5-2670 CPUs x86-64 · 8C · 2.6 GHz · 32 nm · 115 W Intel Xeon E5-2670 8C 2.6GHz Sandy Bridge | Intel | - | Reported | top500.orgtheregister.com |
| Interconnect | Mellanox InfiniBand FDR Interconnect Fat tree · 56 Gb/s per 4x port · About 1 microsecond Mellanox FDR InfiniBand | NVIDIA | - | Reported | top500.orgtop500.org |
The read
Australia's national peak supercomputer before Gadi, a Fujitsu PRIMERGY cluster at the National Computational Infrastructure on the Australian National University campus in Canberra. TOP500 lists the original build as Xeon E5-2670 8C 2.6GHz on FDR InfiniBand with 53,504 cores, Rmax 978.6 TFlop/s, Rpeak 1,112.88 TFlop/s and 1,605.12 kW; it ranked 24th on the November 2012 list. The Register reports 57,472 Sandy Bridge cores, 160 TB of memory, 10 PB of usable storage and Mellanox FDR, formally opened to users on 21 June 2013, with clients including the Bureau of Meteorology, Geoscience Australia and the ARC. A later hybrid expansion appears as a separate TOP500 entry (87,224 cores, 1.68 PFlop/s Rmax, P100 and Xeon Phi additions) through November 2019; it is not recorded separately. The original entry is listed through November 2016. The name Raijin is also used by an unrelated NIFS machine in the register, hence the NCI suffix.
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
- 2026-10-07 Added Raijin, NCI Australia's pre-Gadi PRIMERGY cluster
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 | does not name this system | Intel Xeon E5-2670, Mellanox InfiniBand FDR |
| theregister.com | names system and part | Intel Xeon E5-2670 |
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.