Supercomputers/Systems/ISM Altix 3700
Japan · operational · hpc
ISM Altix 3700
Also known as ISM Statistical Science Supercomputer (SGI Altix 3700 Super Cluster)
Operated by Institute of Statistical Mathematics .
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
- 1.14 TFlop/s
- Rpeak
- 1.33 TFlop/s
- Rmax ÷ Rpeak
- 85.8%
- Cores
- 256
- 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 | - SGI Altix 3700 Super Cluster | SGI HPENYSE
rolls up to Hewlett Packard Enterprise | - | Reported | ism.ac.jptop500.org |
| CPU | - Intel Itanium 2 1.3 GHz, 256 processors | Intel | 256 reported | Reported | ism.ac.jptop500.org |
The read
The parallel half of the Institute of Statistical Mathematics' 2004 statistical-science supercomputer system: an SGI Altix 3700 Super Cluster of 256 Intel Itanium 2 processors at 1.3 GHz, 1,920 GB of memory and 1,331.2 GFlop/s total performance, according to the institute's January 2004 user guide (a vector half of 12 NEC SX-6 processors was installed beside it). TOP500 records the same 256 cores and 1,331.2 GFlop/s peak with 1,142 GFlop/s Rmax over NUMAlink, ranked 196th in June 2004 and 302nd in November 2004 (https://www.top500.org/system/173096/). Rmax rests on TOP500 alone, so the tier is reported. Status is recorded as of the last list appearance.
Timeline
Public list appearances
Pointers only: rank and edition, linking to the canonical entry. We do not reproduce list tables. See sourcing policy.
Change history
- 2026-10-09 Added ISM Altix 3700
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 |
|---|---|---|
| ism.ac.jp | does not name this system | - |
| top500.org | names system only | - |
Checked 2026-10-13 by pnpm verify. Re-run it and the table changes with the web.