Supercomputers/Systems/Plasma Simulator FX100
Japan · decommissioned · hpc
Plasma Simulator FX100
Also known as NIFS Plasma Simulator (5th generation)
Operated by NIFS .
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
- 2.38 PFlop/s
- Rpeak
- 2.62 PFlop/s
- Rmax ÷ Rpeak
- 90.7%
- Cores
- 82,944
- Power
- 1.24 MW
- Per watt
- 1.9 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 PRIMEHPC FX100, 2,592 nodes | Fujitsu | - | Verified | top500.orgnsrp.nifs.ac.jp |
| CPU | - Fujitsu SPARC64 XIfx 32C 1.98GHz | Fujitsu | - | Reported | top500.org |
| Interconnect | - Tofu interconnect 2 | Fujitsu | - | Reported | top500.org |
The read
The fifth-generation Plasma Simulator of Japan's National Institute for Fusion Science: a Fujitsu PRIMEHPC FX100 of 2,592 SPARC64 XIfx 32-core nodes on Tofu interconnect 2. TOP500 lists 82,944 cores, 2.376 PFlop/s Rmax, 2.62 PFlop/s Rpeak and 1,244 kW, 49th on the November 2016 list and 27th on its debut in June 2015. NIFS's Plasma Simulator site independently gives the Fujitsu FX100, 2,592 nodes, 81 TB of memory, 2.62 PFlop/s peak, 10 PB of external storage and an operating period of 2015 to 2020, when the sixth-generation Raijin took over (and the seventh-generation Plasma Simulator Sosei, already in this dataset, followed). No page fetched names the Toki campus machine room, so no site is recorded.
Timeline
- 2015 First operational source
- 2016-11 List debut at #49 (November 2016) source
- 2020 Decommissioned source
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 Added NIFS's fifth-generation Plasma Simulator FX100
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 |
|---|---|---|
| nsrp.nifs.ac.jp | names system only | - |
| top500.org | 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.