Supercomputers/Systems/hotlum
France · operational · hpc
hotlum
Also known as HPE hotlum
Operated by Hewlett Packard Enterprise .
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
- 3.81 PFlop/s
- Rpeak
- 4.58 PFlop/s
- Rmax ÷ Rpeak
- 83.2%
- Cores
- 116,736
- 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 | - HPE Cray EX | Hewlett Packard Enterprise | - | Reported | top500.org |
| CPU | AMD EPYC 7763 (Milan) CPUs x86-64 · 64C · 2.45 GHz · 7 nm · 280 W AMD EPYC 7763 64C 2.45GHz | AMD | - | Reported | top500.org |
| Interconnect | HPE Slingshot-11 Interconnect Dragonfly · 200 Gb/s per port · Around 2 microseconds Slingshot-11 | Hewlett Packard Enterprise | - | Reported | top500.org |
| Operating system | HPE Cray Operating System Operating systems SUSE-derived Linux, container-based management · Proprietary layer over open-source Linux HPE Cray OS | Hewlett Packard Enterprise | - | Reported | top500.org |
The read
CPU-only HPE Cray EX system run by Hewlett Packard Enterprise itself, listed by TOP500 with its site in France. It uses AMD EPYC 7763 64C 2.45GHz processors over Slingshot-11 under HPE Cray OS, installed 2022, with 116,736 cores, Rmax 3.81 PFlop/s and Rpeak 4.58 PFlop/s. It debuted at rank 142 in November 2022 (its best position) and was still listed at 337 in November 2025 and 366 in June 2026. TOP500 is the only source fetched, so the tier is reported; no power figure, city or in-service date is published there.
Timeline
- 2022-11 List debut at #142 (November 2022) 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
- 2026-10-07 Added hotlum (hpe)
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 | AMD EPYC 7763 (Milan), HPE Slingshot-11, HPE Cray Operating 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.