Supercomputers/Systems/Freeman (ERDC)
USA · operational · hpc
Freeman (ERDC)
Also known as Freeman; ERDC Cray CS500
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
- 2.83 PFlop/s
- Rpeak
- 3.67 PFlop/s
- Rmax ÷ Rpeak
- 77.1%
- Cores
- 79,104
- 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 CS500 (manufacturer listed as HPE) | Hewlett Packard Enterprise | - | Reported | top500.orgnextplatform.com |
| CPU | - AMD EPYC 7542 32C 2.9GHz | AMD | - | Reported | top500.orgnextplatform.com |
| Interconnect | - Mellanox InfiniBand HDR100 | NVIDIA | - | Reported | top500.org |
| Operating system | Red Hat Enterprise Linux Operating systems Linux distribution · Open source, commercial support subscription RHEL 7.7 | Red Hat | - | Reported | top500.org |
The read
A Cray CS500 at the Army Engineer Research and Development Center DSRC with AMD EPYC 7542 32C 2.9GHz CPUs, Mellanox InfiniBand HDR100 and RHEL 7.7, 79,104 cores, Rmax 2.83 PFlop/s and Rpeak 3.67 PFlop/s, first listed at rank 123 on June 2020 and rank 477 on June 2026. The Next Platform's 2019 report of the HPCMP purchase describes an AMD EPYC Rome Cray CS500 for ERDC at Vicksburg with 80,320 cores and 16 NVIDIA V100 GPUs, expected in production in early 2020; that description is consistent with Freeman but the core count differs from TOP500's, so the link is stated as likely rather than confirmed and 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.
Change history
- 2026-10-04 Added Freeman, a Cray CS500 at the Army ERDC DSRC
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 | - |
| nextplatform.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.