USA · operational · hpc

Joule 3.0

Also known as NETL Joule 3.0

Operated by National Energy Technology Laboratory at NETL HPC Facility (Morgantown) .

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: 4.86 PFlop/s
Rpeak: 6.11 PFlop/s
Rmax ÷ Rpeak: 79.5%
Cores: 107,648
Power: -
Per watt: - 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	- Koi Computers (TOP500 vendor)	Koi Computers	-	Reported	top500.org
Accelerator	- 72 GPUs, H100	NVIDIA NVDANASDAQ	72 reported	Reported	hpc.netl.doe.gov hpc.netl.doe.gov
CPU	AMD EPYC 9004 (Genoa) CPUs x86-64 · 96C · 2.4 GHz · TSMC N5 · 360 W AMD EPYC 9534 64C 2.45GHz	AMD AMDNASDAQ	-	Verified	top500.org hpc.netl.doe.gov
Interconnect	- InfiniBand, 200-400 GB/s network	NVIDIA NVDANASDAQ	-	Reported	hpc.netl.doe.gov

The read

The third generation of the Joule supercomputer at the DOE National Energy Technology Laboratory in Morgantown, West Virginia, refreshed in June 2024 at a cost of 21.66 million dollars for a stated near 40 percent capacity gain. TOP500 lists a Koi Computers system with AMD EPYC 9534 64C 2.45GHz processors over InfiniBand running Linux, Rmax 4.86 PFlop/s, Rpeak 6.11 PFlop/s and 107,648 cores; it first appeared on the June 2024 list at rank 181. NETL's pages independently state 107,648 CPU cores, AMD EPYC 9534 processors, 6.11 PFLOPS peak, 72 GPUs (H100), 481 TB of memory, over 19.5 PB of storage and a 200-400 GB/s InfiniBand network, and name 215th on the November 2024 TOP500. NETL cites 4.82 PFLOPS of additional GPU peak that is not recorded here.

Timeline

2024-06 List debut at #181 (June 2024) source
2024-06 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.

#181: TOP500, June 2024 →

Site & facility

NETL HPC Facility (Morgantown)

Location: Morgantown, WV, USA

hpc.netl.doe.gov netl.doe.gov

Change history

2026-10-02 Added Joule 3.0

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
hpc.netl.doe.gov	names system only	-
top500.org	names system and part	AMD EPYC 9004 (Genoa)

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