Supercomputers/Systems/TSUBAME3.0
Japan · decommissioned · mixed
TSUBAME3.0
Also known as TSUBAME 3.0, TSUBAME3, TSUBAME
Operated by Institute of Science Tokyo at Institute of Science Tokyo, Ookayama .
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: 32 of 52 systems have a readable citation that names them, and 4 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
- 8.13 PFlop/s
- Rpeak
- 12.13 PFlop/s
- Rmax ÷ Rpeak
- 67.0%
- Cores
- 135,828
- Power
- 792 kW
- Per watt
- 10.3 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 | - SGI ICE XA | SGI HPENYSE
rolls up to Hewlett Packard Enterprise | - | Reported | gsic.titech.ac.jpisct.ac.jp |
| Accelerator | NVIDIA Tesla P100 Accelerators NVIDIA Tesla P100 | NVIDIA | - | Reported | gsic.titech.ac.jpisct.ac.jp |
| CPU | Intel Xeon E5-2680 v4 CPUs Xeon E5-2680v4 14C 2.4GHz | Intel | - | Reported | gsic.titech.ac.jpisct.ac.jp |
| Interconnect | Omni-Path Architecture Interconnect Intel Omni-Path | Intel | - | Reported | gsic.titech.ac.jpisct.ac.jp |
| Cooling | Direct liquid cooling, warm water Cooling SGI ICE XA: warm-water liquid cooled | SGI HPENYSE
rolls up to Hewlett Packard Enterprise | - | Reported | gsic.titech.ac.jpisct.ac.jp |
The read
SGI ICE XA hardware sold under HPE ownership - SGI had been acquired the year before - which makes this row one of the cleanest tests of the alias table: the supplier at build is SGI, the parent it rolls up to is HPE, and neither fact should erase the other.
Timeline
- 2016 Announced source
- 2017-06 List debut at #13 (June 2017) source
- 2017-08 First operational source
- 2024 Decommissioned source
Public list appearances
Pointers only: rank and edition, linking to the canonical entry. We do not reproduce list tables. See sourcing policy.
Site & facility
Institute of Science Tokyo, Ookayama
- Location
- Tokyo, Japan
- Cooling
- Direct liquid cooling
- Commissioned
- 2006
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 |
|---|---|---|
| gsic.titech.ac.jp | names system only | - |
| isct.ac.jp | does not name this system | - |
Checked 2026-09-08 by pnpm verify. Re-run it and the table changes with the web.
Further reading
Inside a node
Why accelerators exist, what the memory hierarchy costs, and how the CPU and accelerator merged onto one package.
Power and cooling
Why air ran out at 20 kW a rack, how warm-water cooling removes the chillers, and what PUE conceals.
Operating a supercomputer
Acceptance testing, why "installed" and "in production" are six months apart, and the machine lifecycle.