Supercomputers/Systems/Mustang (LANL)
USA · decommissioned · hpc
Mustang (LANL)
Also known as LANL Mustang
Operated by Los Alamos National Laboratory at Los Alamos Strategic Computing Complex .
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
- 230.60 TFlop/s
- Rpeak
- 340.92 TFlop/s
- Rmax ÷ Rpeak
- 67.6%
- Cores
- 37,056
- Power
- 540.4 kW
- Per watt
- 0.4 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 | - Appro Xtreme-X 1320H-LANL | Appro HPENYSE
rolls up to Hewlett Packard Enterprise | - | Reported | theregister.comtop500.org |
| CPU | - AMD Opteron 6176 12C 2.3GHz | AMD | - | Reported | top500.org |
The read
Appro Xtreme-X cluster for Los Alamos's unclassified Turquoise network. TOP500 lists 37,056 Opteron 6176 12C 2.3 GHz cores on Infiniband QDR (RHEL 6.1), Rmax 230.6 TFlop/s, Rpeak 340.92 TFlop/s, 540.4 kW, first ranked 46th in November 2011 and present on nine lists to November 2015. The Register's October 2011 report describes 1,600 two-socket nodes with 64 GB each (38,400 cores, 102.4 TB), 353 teraflops peak and a single-rail QDR InfiniBand fat tree, used for ocean, wildfire, plasma, materials and reactor modelling; TOP500's core count is used here. No retirement date was found in a fetched source and the system has been absent from the TOP500 since November 2015, so it is recorded as decommissioned with no date. TOP500 is the only source for Rmax, so the tier is reported.
Timeline
Public list appearances
Pointers only: rank and edition, linking to the canonical entry. We do not reproduce list tables. See sourcing policy.
Site & facility
Los Alamos Strategic Computing Complex
- Location
- Los Alamos, NM, USA
- Cooling
- Chilled water
- Commissioned
- 1993
Change history
- 2026-10-02 Added Mustang, Los Alamos's Appro Opteron cluster
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 |
|---|---|---|
| top500.org | names system only | - |
| theregister.com | names system only | - |
Checked 2026-10-09 by pnpm verify. Re-run it and the table changes with the web.