Supercomputers/Systems/Joule 2.0
USA · operational · hpc
Joule 2.0
Also known as NETL Joule 2.0
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
- 3.61 PFlop/s
- Rpeak
- 5.75 PFlop/s
- Rmax ÷ Rpeak
- 62.8%
- Cores
- 86,400
- 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 | - HP ProLiant XL170r/XL190r/DL360 Gen10 | Hewlett Packard Enterprise | - | Verified | top500.orghpc4energyinnovation.llnl.gov |
| Accelerator | - NVIDIA Tesla P100 | NVIDIA | - | Verified | top500.orghpc4energyinnovation.llnl.gov |
| CPU | Intel Xeon Gold 6148 CPUs x86-64 · 20C · 2.4 GHz · 14 nm · 150 W Xeon Gold 6148 20C 2.4GHz | Intel | - | Verified | top500.orghpc4energyinnovation.llnl.gov |
| Interconnect | Omni-Path Architecture Interconnect Fat tree · 100 Gb/s per port · About 1 microsecond Intel Omni-Path | Cornelis Networks | - | Reported | top500.org |
The read
HPE ProLiant XL170r/XL190r/DL360 Gen10 cluster at the DOE National Energy Technology Laboratory, the second generation of the Joule supercomputer. TOP500 lists 86,400 cores of Xeon Gold 6148 20C 2.4GHz with NVIDIA Tesla P100 GPUs on Intel Omni-Path, 3.61 PFlop/s Rmax and 5.75 PFlop/s Rpeak; it appeared from November 2018 through June 2026 and ranked 239th in June 2024 (entry recorded here). NETL reported a 16.5 million dollar 2019 upgrade lifting capability to 5.767 PFLOPS, and an LLNL partner page lists 1,664 nodes and 78,720 cores for Joule 2. It coexists with the Joule 3.0 refresh of June 2024.
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
Change history
- 2026-10-02 Added Joule 2.0, NETL
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 |
|---|---|---|
| netl.doe.gov | names system only | - |
| top500.org | names system and part | Intel Xeon Gold 6148, Omni-Path Architecture |
Checked 2026-10-09 by pnpm verify. Re-run it and the table changes with the web.
Further reading
Operating a supercomputer
Acceptance testing, why "installed" and "in production" are six months apart, and the machine lifecycle.
Inside a node
Latency-optimised versus throughput-optimised processors, NUMA, and the end of the host-to-device copy.
The interconnect
Topologies, why latency and tail behaviour matter more than bandwidth, and how the fabric market consolidated.