Supercomputers/Systems/MeluXina
Luxembourg · operational · hpc
MeluXina
Operated by LuxProvide at MeluXina (Bissen) .
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
- 10.52 PFlop/s
- Rpeak
- 15.29 PFlop/s
- Rmax ÷ Rpeak
- 68.8%
- Cores
- 99,200
- Power
- 390.25 kW
- Per watt
- 27.0 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 | - Atos BullSequana XH2000 | Eviden | - | Verified | eurohpc-ju.europa.euluxprovide.lu |
| CPU | AMD EPYC 7H12 (Rome, high frequency) CPUs x86-64 · 64C · 2.6 GHz · 7 nm · 280 W AMD EPYC 7H12 64C (Cluster Module) | AMD | - | Reported | top500.orgeurohpc-ju.europa.eu |
| Interconnect | NVIDIA InfiniBand HDR Interconnect Fat tree or dragonfly+ · 200 Gb/s per port · About 0.6 microseconds InfiniBand HDR, 200 Gb/s | NVIDIA | - | Reported | top500.orgluxprovide.lu |
The read
Luxembourg's EuroHPC system, run by LuxProvide, built by Eviden on AMD EPYC with NVIDIA A100 GPUs and 20 PB of storage, launched in June 2021. Figures are for the Accelerator Module at its best TOP500 entry, 36th in June 2021. EuroHPC quotes a higher 12.81 PFlop/s Rmax for the module, which looks like a combined or later figure, so the TOP500 numbers are used and the conflict is left open. The tier is reported because the headline figures rest on TOP500 while EuroHPC disagrees on them.
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
Where sources disagree
We record conflicts instead of picking a winner quietly. All open questions.
- Rmax (Accelerator Module): 10.52 PFlop/s against 12.81 PFlop/s. EuroHPC quotes a higher figure that may be a combined or later result; TOP500 is used.
Change history
- 2026-09-20 Added with a rank pointer on the edition where it ranked highest
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 |
|---|---|---|
| eurohpc-ju.europa.eu | names system and part | AMD EPYC 7H12 (Rome, high frequency), NVIDIA InfiniBand HDR |
| top500.org | names system and part | AMD EPYC 7H12 (Rome, high frequency), 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
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.