Japan · operational · hpc

Nagoya FX1

Also known as Nagoya University Fujitsu FX1 (System 3 of the 2009 hybrid supercomputer)

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: 1263 of 1345 systems have a readable citation that names them, and 56 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: 28.51 TFlop/s
Rpeak: 30.96 TFlop/s
Rmax ÷ Rpeak: 92.1%
Cores: 3,072
Power: 263 kW
Per watt: 0.1 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 FX1 high-end technical computing server, 768 nodes	Fujitsu 6702TSE	-	Reported	info.archives.global.fujitsu top500.org
CPU	- Fujitsu SPARC64 VII 4C 2.52GHz, 768 CPUs, 3,072 cores	Fujitsu 6702TSE	768 reported	Reported	info.archives.global.fujitsu top500.org
Interconnect	Mellanox InfiniBand DDR Interconnect Fat tree · 20 Gb/s per 4x port · About 2 microseconds InfiniBand DDR	NVIDIA NVDANASDAQ	-	Reported	top500.org

The read

Large-scale distributed UNIX computation server (System 3) of Nagoya University's 2009 hybrid supercomputer: Fujitsu FX1 nodes with SPARC64 VII quad-core CPUs on InfiniBand DDR. Fujitsu's March 2009 order announcement gives 768 nodes (768 CPUs, 3,072 cores), 24 TB of memory and a 30.72 TFlop/s peak, with the two-stage installation completing in October 2009, alongside a SPARC Enterprise M9000 and an HX600 Linux cluster of the same system. TOP500 lists 3,072 cores (SPARC64 VII 2.52 GHz, Open Solaris), 28.51 TFlop/s Rmax, 30.96 TFlop/s Rpeak and 263 kW, 243rd on the November 2009 list and last seen in June 2010. The Fujitsu page is a pre-delivery order notice, so the tier is reported. Later Nagoya machines in this dataset are the FX100 and Flow.

Timeline

2009 First operational source
2009-11 List debut at #243 (November 2009) source

Public list appearances

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

#243: TOP500, November 2009 →

Site & facility

Nagoya University Information Technology Center

Location: Nagoya, Japan

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

Change history

2026-10-09 Added Nagoya FX1

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
info.archives.global.fujitsu	names system only	-
top500.org	names system and part	Mellanox InfiniBand DDR

Checked 2026-10-13 by pnpm verify. Re-run it and the table changes with the web.