Nagoya FX100

Also known as Fujitsu PRIMEHPC FX100 at Nagoya University

Operated by Information Technology Center, Nagoya University at Nagoya University Information Technology Center .

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: 2.91 PFlop/s
Rpeak: 3.24 PFlop/s
Rmax ÷ Rpeak: 89.8%
Cores: 92,160
Power: 1.38 MW
Per watt: 2.1 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	Fujitsu 6702TSE	-	Reported	top500.org
CPU	- SPARC64 XIfx 32C 2.2GHz	Fujitsu 6702TSE	-	Reported	top500.org
Interconnect	- Tofu interconnect 2	Fujitsu 6702TSE	-	Reported	top500.org

The read

The Fujitsu PRIMEHPC FX100 of Nagoya University's Information Technology Center: 92,160 SPARC64 XIfx 32-core cores at 2.2 GHz on Tofu interconnect 2, with a 3.2 petaflop peak that the center's own page reports as 21st on the 46th TOP500 list in November 2015 (TOP500's table shows 22nd). The center's page says the FX100 was replaced by the supercomputer Flow, which began operation in July 2020. TOP500 is the only source for Rmax, cores and power, so the tier is reported.

Timeline

2015 First operational source
2015-11 List debut at #22 (November 2015) source
2020-07 Decommissioned source

Public list appearances

Pointers only: rank and edition, linking to the canonical entry. We do not reproduce list tables. See sourcing policy.

#22: TOP500, November 2015 →

Site & facility

Nagoya University Information Technology Center

Location: Nagoya, Japan

top500.org icts.nagoya-u.ac.jp

Change history

2026-10-02 Added Nagoya University's Fujitsu PRIMEHPC 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
icts.nagoya-u.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.