Supercomputers/Systems/HPC6
Italy · operational · hpc
HPC6
Operated by Eni at Eni Green Data Center .
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
- 477.9 PFlop/s
- Rpeak
- 607.0 PFlop/s
- Rmax ÷ Rpeak
- 78.7%
- Cores
- 3,143,520
- Power
- 8.46 MW
- Per watt
- 56.5 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 | - | Verified | eni.comtop500.org |
| Accelerator | AMD Instinct MI250X Accelerators ROCm (CDNA 2) · 1.7 GHz · TSMC N6 · 560 W AMD Instinct MI250X, 4 per node | AMD | - | Verified | eni.comtop500.org |
| CPU | AMD EPYC 7A53 (Trento) CPUs x86-64 · 64C · 2 GHz · 7 nm · 280 W AMD Optimized 3rd Generation EPYC 64C 2GHz | AMD | - | Verified | eni.comtop500.org |
| Interconnect | HPE Slingshot-11 Interconnect Dragonfly · 200 Gb/s per port · Around 2 microseconds Slingshot-11 | Hewlett Packard Enterprise | - | Verified | eni.comtop500.org |
| Storage | HPE Cray ClusterStor E1000 Storage Lustre appliance, flash and disk tiers · 700 PB on Frontier (Orion) · About 10 TB/s peak HPE Cray ClusterStor E1000 | Hewlett Packard Enterprise | - | Reported | nasdaq.com |
| Cooling | Direct liquid cooling, warm water Cooling Direct-to-chip cold plates, facility water loop · Removes 90+ percent of node heat to liquid new liquid cooling system, direct liquid cooling dissipating 96% of heat | Hewlett Packard Enterprise | - | Verified | eni.comthechemicalengineer.com |
| Operating system | Red Hat Enterprise Linux Operating systems Linux distribution · Open source, commercial support subscription RHEL 8.9 | Red Hat | - | Reported | top500.org |
The read
Eni's own announcement made a point this dataset's schema makes anyway: HPC7 does not replace HPC6, the two operate independently, so they are carried as separate systems rather than one upgraded in place. HPC6 pairs a Frontier-family node, a 64-core 2GHz custom EPYC alongside four MI250X modules on HPE Slingshot-11, with an oil-and-gas workload: seismic and subsurface imaging, CO2 storage, and battery and biofuel research, per Eni's own description. The power figure recorded here is TOP500's measured Linpack-run draw; Eni's own site separately quotes a higher nameplate MVA figure for the facility, a different metric not reproduced here.
Timeline
- 2024-11 Announced source
- 2024-11 List debut at #5 (November 2024) source
- 2024-11 First operational 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
Change history
- 2026-09-22 Gained a Green500 rank pointer (#21 on the 2024-11 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 Instinct MI250X, AMD EPYC 7A53 (Trento), HPE Slingshot-11, HPE Cray ClusterStor E1000 |
| eni.com | names system and part | AMD Instinct MI250X, AMD EPYC 7A53 (Trento), HPE Cray ClusterStor E1000, Direct liquid cooling, warm water |
Checked 2026-10-09 by pnpm verify. Re-run it and the table changes with the web.
Further reading
Inside a node
Why accelerators exist, what the memory hierarchy costs, and how the CPU and accelerator merged onto one package.
Operating a supercomputer
Acceptance testing, why "installed" and "in production" are six months apart, and the machine lifecycle.
The interconnect
Topologies, why latency and tail behaviour matter more than bandwidth, and how the fabric market consolidated.