Supercomputers/Systems/Taranis
France · operational · hpc
Taranis
Operated by Meteo-France at Meteo-France Computing Centre (Toulouse) .
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
- 8.19 PFlop/s
- Rpeak
- 10.32 PFlop/s
- Rmax ÷ Rpeak
- 79.4%
- Cores
- 294,912
- Power
- 1.67 MW
- Per watt
- 4.9 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 | - Eviden (Atos) BullSequana XH2000 | Eviden | - | Reported | top500.orgmeteofrance.com |
| CPU | AMD EPYC 7742 (Rome) CPUs x86-64 · 64C · 2.25 GHz · 7 nm · 225 W AMD EPYC 7742 64C 2.25GHz | AMD | - | Reported | top500.org |
| Interconnect | - Mellanox InfiniBand HDR100 | Mellanox NVDANASDAQ
rolls up to NVIDIA | - | Reported | top500.org |
The read
One of Meteo-France's twin Toulouse supercomputers, an Eviden (formerly Atos) BullSequana XH2000 built on AMD EPYC 7742 processors over Mellanox InfiniBand HDR100, installed in 2020 and inaugurated alongside its twin Belenos in 2021. Meteo-France's own press material states the pair multiplies the agency's computing power by roughly 5.5 and that they run continuously for real-time forecasting alongside climate research; TOP500 first listed Taranis 30th on the November 2020 list. French technology press (Silicon.fr) independently states the same Toulouse site and the same Rmax and Rpeak figures TOP500 records, but since that account appears to draw on the same TOP500 listing rather than an independent measurement, the tier stays reported rather than verified. TOP500 is the only source found for the exact core count and power draw.
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
Meteo-France Computing Centre (Toulouse)
- Location
- Toulouse, France
- Commissioned
- 2020
Change history
- 2026-09-24 Taranis added, one of Meteo-France's twin Toulouse supercomputers
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 |
|---|---|---|
| meteofrance.com | names system only | - |
| top500.org | names system and part | AMD EPYC 7742 (Rome) |
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.