Supercomputers/Systems/Earth Simulator 3
Japan · decommissioned · hpc
Earth Simulator 3
Also known as ES3, SX-ACE
Operated by JAMSTEC at Earth Simulator 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
- -
- Rpeak
- 1.30 PFlop/s
- Rmax ÷ Rpeak
- -
- Cores
- 20,480
- Power
- -
- Per watt
- - 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 | - NEC SX-ACE, 5,120 nodes | NEC | - | Reported | jamstec.go.jp |
| CPU | - NEC SX-ACE vector CPU, 4 cores per node, 64 GFLOPS per core | NEC | 5,120 reported | Reported | jamstec.go.jp |
The read
Third-generation Earth Simulator: 5,120 NEC SX-ACE nodes (one four-core CPU each, 20,480 cores), 1.3 PFLOPS peak, 320 TB memory and 1.3 PB/s memory bandwidth. Memory-bandwidth-heavy vector design for climate and solid-earth simulation. In service 2015 to 2021, then replaced by Earth Simulator 4. Not on the TOP500 as a distinct entry.
Site & facility
Change history
- 2026-10-02 Added Earth Simulator 3, JAMSTEC's 5,120-node NEC SX-ACE system
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 |
|---|---|---|
| en.wikipedia.org | names system only | - |
| jamstec.go.jp | names system only | - |
Checked 2026-10-09 by pnpm verify. Re-run it and the table changes with the web.