Supercomputers/Systems/alpha ONE
Germany · operational · ai training
alpha ONE
Also known as Aleph Alpha alpha ONE
Operated by Aleph Alpha .
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
- 7.62 PFlop/s
- Rpeak
- 7.86 PFlop/s
- Rmax ÷ Rpeak
- 96.9%
- Cores
- 57,344
- 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 Apollo 6500 | Hewlett Packard Enterprise | - | Verified | top500.orgthe-decoder.com |
| Accelerator | - 512 NVIDIA HGX A100 80GB GPUs | NVIDIA | 512 reported | Verified | the-decoder.comtop500.org |
| CPU | - AMD EPYC 7F52 16C 3.5GHz | AMD | - | Reported | top500.org |
| Interconnect | NVIDIA InfiniBand HDR Interconnect Fat tree or dragonfly+ · 200 Gb/s per port · About 0.6 microseconds Mellanox HDR Infiniband | NVIDIA | - | Reported | top500.org |
The read
The AI training cluster of German generative-AI company Aleph Alpha, built with HPE and NVIDIA: 64 HPE Apollo 6500 servers carrying 512 NVIDIA A100 80GB GPUs on Mellanox HDR InfiniBand, with AMD EPYC 7F52 hosts. TOP500 lists 57,344 cores, Rmax 7.62 PFlop/s and Rpeak 7.86 PFlop/s under RHEL 8.5; the launch coverage cites up to 7.625 petaflops and a 72nd place, which was its debut on the June 2022 list. It was still 88th on June 2023 and 234th on June 2026. The company says Luminous was trained on an HPE supercomputer; the exact data-centre site is not stated consistently in the pages fetched (TOP500 gives Bayreuth, Germany), so no site is attached.
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
- 2026-10-02 Added alpha ONE, Aleph Alpha's 512-A100 AI cluster, 88th on the June 2023 TOP500
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 |
|---|---|---|
| the-decoder.com | names system and part | NVIDIA InfiniBand HDR |
| top500.org | names system and part | NVIDIA InfiniBand HDR |
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
Why accelerators exist, what the memory hierarchy costs, and how the CPU and accelerator merged onto one package.
The interconnect
Topologies, why latency and tail behaviour matter more than bandwidth, and how the fabric market consolidated.