France · operational · hpc

Adastra

Operated by GENCI at CINES .

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: 46.10 PFlop/s
Rpeak: 61.61 PFlop/s
Rmax ÷ Rpeak: 74.8%
Cores: 319,072
Power: 921.48 kW
Per watt: 50.0 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	- HPE Cray EX235a	Hewlett Packard Enterprise HPENYSE	-	Reported	top500.org
Accelerator	AMD Instinct MI250X Accelerators ROCm (CDNA 2) · 1.7 GHz · TSMC N6 · 560 W AMD Instinct MI250X	AMD AMDNASDAQ	-	Verified	top500.org genci.fr
CPU	AMD EPYC 7A53 (Trento) CPUs x86-64 · 64C · 2 GHz · 7 nm · 280 W AMD Optimized 3rd Generation EPYC 64C 2GHz	AMD AMDNASDAQ	-	Verified	top500.org dci.dci-gitlab.cines.fr
Interconnect	HPE Slingshot-11 Interconnect Dragonfly · 200 Gb/s per port · Around 2 microseconds Slingshot-11	Hewlett Packard Enterprise HPENYSE	-	Verified	top500.org genci.fr
Operating system	HPE Cray Operating System Operating systems SUSE-derived Linux, container-based management · Proprietary layer over open-source Linux HPE Cray OS	Hewlett Packard Enterprise HPENYSE	-	Reported	top500.org

AI datacenter metrics

Figures beyond an accelerator count, each with who stated it. What can and cannot be compared across AI datacenters.

Metric	Value	As of	Basis	Note	Source
PUE	1.1	2021-11	Design target	GENCI 2021 contract release: HPE solution with hot-water cooling and a PUE of 1.10. Contract design figure, not metered.	genci.fr

The read

GENCI-funded, CINES-operated, following the same funder/host split already recorded for Jean Zay (GENCI/IDRIS): CINES is recorded here as a site under GENCI rather than as its own company row. GENCI's and CINES's own announcements independently confirm the MI250X/Trento/Slingshot-11 hardware, but neither states a Linpack figure matching TOP500's own GPU-partition-only Rmax, so this row's performance numbers stay TOP500-sourced.

Timeline

2021-11 Announced source
2022 First operational source
2023-11 List debut at #3 (November 2023) source

Public list appearances

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

Site & facility

CINES

Location: Montpellier, France
Commissioned: 2022

cines.fr

Change history

2026-09-22 Gained a Green500 rank pointer (#3 on the 2023-11 list)

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
top500.org	names system and part	AMD EPYC 7A53 (Trento), AMD Instinct MI250X, HPE Slingshot-11, HPE Cray Operating System
genci.fr	names system and part	AMD EPYC 7A53 (Trento), AMD Instinct MI250X, HPE Cray Operating System

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