USA · operational · hpc

Dane

Also known as LLNL CTS-2 Dane

Operated by Lawrence Livermore National Laboratory at Livermore Computing 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: 7.04 PFlop/s
Rpeak: 7.91 PFlop/s
Rmax ÷ Rpeak: 89.0%
Cores: 123,648
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	- Dell PowerEdge C6620 CTS-2	Dell Technologies DELLNYSE	-	Verified	top500.org hpc.llnl.gov
CPU	- Intel Xeon Platinum 8480+ 56C 2GHz (Sapphire Rapids)	Intel INTCNASDAQ	-	Reported	top500.org hpc.llnl.gov
Interconnect	Omni-Path Architecture Interconnect Fat tree · 100 Gb/s per port · About 1 microsecond Cornelis Networks Omni-Path	Cornelis Networks	-	Verified	top500.org hpc.llnl.gov
Operating system	Tri-Lab Operating System Stack Operating systems Linux distribution, RHEL-derived, HPC-tuned · Open source, LLNL-maintained TOSS 4	Lawrence Livermore National Laboratory	-	Verified	hpc.llnl.gov top500.org

The read

Livermore's CTS-2 capacity cluster for the NNSA's Advanced Simulation and Computing programme, a Dell PowerEdge C6620 system of Intel Sapphire Rapids nodes on a Cornelis Networks Omni-Path fabric running TOSS. TOP500 lists Xeon Platinum 8480+ 56C 2GHz, 123,648 cores, Rmax 7.04 and Rpeak 7.91 PFlop/s; it debuted 107th in November 2023 and was 244th in June 2026. LLNL's platform page gives a larger machine, 1,544 nodes of 112 cores (167,552 cores) and 10.7 PFlop/s CPU peak, commissioned 2023 with 256 GB DDR5 per node, so the TOP500 run covers a subset and its figures are the ones recorded. The LLNL page lists Dane under the CZ zone with CTS-2 class and ASC and M&IC programme use.

Timeline

2023 First operational source
2023-11 List debut at #107 (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.

#107: TOP500, November 2023 →

Site & facility

Livermore Computing Center

Location: Livermore, CA, USA
Cooling: Direct liquid cooling (warm water)
Commissioned: 1996

hpc.llnl.gov llnl.gov

Change history

2026-10-04 Added Dane (llnl)

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.llnl.gov	names system and part	Tri-Lab Operating System Stack
top500.org	names system and part	Omni-Path Architecture

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