Supercomputers/Systems/Joliot-Curie Rome
France · operational · hpc
Joliot-Curie Rome
Quantum: linked to Lucy (12 photonic qubits), Pasqal Ruby (100 neutral atom qubits)
Also known as Irene Rome
Operated by CEA at Very Large Computing Centre (TGCC) .
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
- 6.99 PFlop/s
- Rpeak
- -
- Rmax ÷ Rpeak
- -
- Cores
- -
- Power
- 1.44 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 | - Bull Sequana XH2000 | Eviden | - | Verified | www-hpc.cea.fratos.net |
| CPU | AMD EPYC 7H12 (Rome, high frequency) CPUs x86-64 · 64C · 2.6 GHz · 7 nm · 280 W AMD Rome 7H12 64C 2.6GHz | AMD | - | Verified | top500.orgatos.net |
The read
The AMD Rome partition of the GENCI-owned Joliot-Curie machine, an Atos BullSequana XH2000 of EPYC 7H12 nodes at CEA's TGCC, 33rd on the June 2020 TOP500 and still listed in June 2026. The plan for a 22 PFlop/s machine was announced at the June 2019 inauguration; CEA says the Rome partition was installed from the end of 2019, so no start date is recorded. TOP500 counts 197,120 cores and 12.04 PFlop/s peak where CEA counts 293,376 cores and 11.75 PFlop/s, so neither is recorded. CEA's two documentation pages also disagree on the node count and interconnect. GENCI owns the machine and CEA staff run it, so CEA is recorded as operator. TOP500 is the only source for Rmax, so the tier is reported.
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.
- Core count and peak: 293,376 cores, 11.75 PFlop/s (CEA) against 197,120 cores, 12.04 PFlop/s (TOP500). TOP500 may describe a subset of nodes; neither is recorded.
- Nodes and interconnect: 2,292 nodes, InfiniBand HDR100 (CEA Joliot-Curie page) against 2,286 nodes, EDR InfiniBand pruned fat tree (TGCC documentation). Both pages are CEA; no interconnect edge is recorded.
Change history
- 2026-09-22 Gained a Green500 rank pointer (#161 on the 2025-06 list)
- 2026-09-20 Added with a rank pointer; CEA and TOP500 disagree on cores, peak, nodes and fabric
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 |
|---|---|---|
| atos.net | names system and part | AMD EPYC 7H12 (Rome, high frequency) |
| top500.org | names system only | - |
Checked 2026-10-09 by pnpm verify. Re-run it and the table changes with the web.