Italy · operational · hpc

HPC4

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: 12.21 PFlop/s
Rpeak: 18.62 PFlop/s
Rmax ÷ Rpeak: 65.6%
Cores: 253,600
Power: 1.32 MW
Per watt: 9.3 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 ProLiant DL380 Gen10, 1,600 nodes	Hewlett Packard Enterprise HPENYSE	-	Verified	top500.org eni.com
Accelerator	NVIDIA Tesla P100 Accelerators CUDA (Pascal GP100) · 3,584C · 1.48 GHz · 16 nm · 300 W two NVIDIA Tesla P100 per node across 1,600 nodes	NVIDIA NVDANASDAQ	3,200 estimated	Verified	eni.com top500.org
CPU	Intel Xeon Platinum 8160 CPUs x86-64 · 24C · 2.1 GHz · 14 nm · 150 W two 24-core Xeon Platinum 8160 per node across 1,600 nodes	Intel INTCNASDAQ	3,200 estimated	Verified	eni.com top500.org
Interconnect	Mellanox InfiniBand EDR Interconnect Fat tree · 100 Gb/s per 4x port · About 0.9 microseconds Mellanox InfiniBand EDR	NVIDIA NVDANASDAQ	-	Reported	top500.org
Operating system	Red Hat Enterprise Linux Operating systems Linux distribution · Open source, commercial support subscription RHEL 7.4	Red Hat IBMNYSE rolls up to IBM	-	Reported	top500.org

The read

Eni's HPE ProLiant DL380 Gen10 cluster at the Green Data Center in Ferrera Erbognone, 1,600 nodes each with two 24-core Intel Xeon Platinum 8160 CPUs and two NVIDIA Tesla P100 GPUs on Mellanox EDR InfiniBand, with a 15 PB storage subsystem. Launched January 18, 2018; Eni's own release states 18.6 PFlop/s peak, matching TOP500's 18.62 PFlop/s Rpeak and 12.21 PFlop/s Rmax across 253,600 cores, so the tier is verified. Eni's release also states that combined with the older HPC3 system the company then had 22.4 PFlop/s of total peak capacity, a company-wide figure rather than HPC4 alone. First appeared on the June 2018 TOP500 list at rank 13 and was still listed as of November 2025 at rank 144. Distinct from the later Dell-built HPC5 (2020) and HPE Cray EX4000 HPC6/HPC7 (2024) already in this dataset.

Timeline

2018-01 First operational source
2018-06 List debut at #13 (June 2018) source

Public list appearances

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

#13: TOP500, June 2018 →

Site & facility

Eni Green Data Center

Location: Ferrera Erbognone, Italy

eni.com top500.org

Change history

2026-09-27 HPC4 added, Eni's HPE ProLiant/Tesla P100 supercomputer at the Green Data Center, predecessor to HPC5/HPC6/HPC7

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	Intel Xeon Platinum 8160, NVIDIA Tesla P100, Mellanox InfiniBand EDR
eni.com	names system and part	NVIDIA Tesla P100, Mellanox InfiniBand EDR

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