France · operational · hpc

Gaïa (EDF)

Also known as Gaia

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: 1.98 PFlop/s
Rpeak: 3.05 PFlop/s
Rmax ÷ Rpeak: 64.9%
Cores: 41,472
Power: 512 kW
Per watt: 3.9 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	- Bull Intel cluster	Bull ATOEPA rolls up to Atos	-	Reported	top500.org
CPU	- Xeon Gold 6140 18C 2.3GHz	Intel INTCNASDAQ	-	Reported	top500.org
Interconnect	Omni-Path Architecture Interconnect Fat tree · 100 Gb/s per port · About 1 microsecond Intel Omni-Path	Intel INTCNASDAQ	-	Reported	top500.org

The read

EDF's 2018 Bull cluster of Intel Xeon Gold 6140 (18-core, 2.3 GHz) CPUs on Intel Omni-Path, 41,472 cores at 1.98 PFlop/s Rmax and 3.05 PFlop/s Rpeak on 512 kW. First appeared at rank 97 on the November 2018 list and last appeared at rank 467 on June 2023, which is the basis for the status date; no retirement notice was found. Not to be confused with Petrobras's Gaia or the Gaia AI Factory in this dataset.

Timeline

2018 First operational source
2018-11 List debut at #97 (November 2018) source

Public list appearances

Pointers only: rank and edition, linking to the canonical entry. We do not reproduce list tables. See sourcing policy.

#97: TOP500, November 2018 →

Site & facility

EDF Val-de-Reuil

Location: Val-de-Reuil, France

top500.org

Change history

2026-10-02 Added Gaia (EDF), the 2018 Bull Xeon Gold cluster, 97th on the November 2018 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.

Every source cited on this page was readable, and none of them mentions this system. They are cited at page granularity, normally because no stable deep link could be found. That is a real weakness in this row and it is why the system carries a confidence tier below verified. See how this check works.

Cited source	Result	Found on the page
top500.org	does not name this system	Omni-Path Architecture

Checked 2026-10-09 by pnpm verify. Re-run it and the table changes with the web.