Supercomputers/Systems/Onyx (ERDC)
USA · operational · hpc
Onyx (ERDC)
Also known as ONYX
Operated by ERDC DSRC .
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
- 6.32 PFlop/s
- Rpeak
- 7.46 PFlop/s
- Rmax ÷ Rpeak
- 84.7%
- Cores
- 211,816
- 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 | - Cray XC40 | Cray HPENYSE
rolls up to Hewlett Packard Enterprise | - | Verified | top500.orgglobenewswire.com |
| CPU | - Intel Xeon E5-2699v4 22C 2.2GHz | Intel | - | Reported | top500.org |
| Interconnect | Cray Aries Interconnect Dragonfly · About 10 GB/s per direction · Around 1 microsecond Aries interconnect | Cray HPENYSE
rolls up to Hewlett Packard Enterprise | - | Reported | top500.org |
The read
Cray XC40 at the Army Engineer Research and Development Center DoD Supercomputing Resource Center in Vicksburg, Mississippi, part of the DoD HPCMP. Cray announced a $26 million HPCMP contract on November 7, 2016 for an XC40 and three Sonexion storage systems, with Xeon E5 and Knights Landing processors and installation expected mid-2017. TOP500 lists ONYX with Xeon E5-2699v4 22C 2.2GHz on Aries, 211,816 cores, Rmax 6.32 PFlop/s and Rpeak 7.46 PFlop/s, and shows it first ranking 30th in June 2017 at 3.41 PFlop/s with 160,304 cores, then re-measured at 6.32 PFlop/s from November 2020 (43rd) to 260th in June 2026. TOP500 is the only source for the HPL figures, so the tier is reported.
Timeline
- 2016-11 Announced source
- 2017 First operational source
- 2020-11 List debut at #43 (November 2020) source
Public list appearances
Pointers only: rank and edition, linking to the canonical entry. We do not reproduce list tables. See sourcing policy.
Change history
- 2026-10-02 Added Onyx, ERDC's Cray XC40
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 and part | Cray Aries |
| globenewswire.com | does not name this system | - |
Checked 2026-10-09 by pnpm verify. Re-run it and the table changes with the web.
Further reading
Operating a supercomputer
Acceptance testing, why "installed" and "in production" are six months apart, and the machine lifecycle.
Inside a node
Latency-optimised versus throughput-optimised processors, NUMA, and the end of the host-to-device copy.
The interconnect
Topologies, why latency and tail behaviour matter more than bandwidth, and how the fabric market consolidated.