Magma (LLNL)

Also known as LLNL CTS-1 Magma

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: 3.24 PFlop/s
Rpeak: 4.59 PFlop/s
Rmax ÷ Rpeak: 70.6%
Cores: 62,400
Power: 887 kW
Per watt: 3.7 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	- Penguin Computing Relion cluster (CTS-1)	Penguin Computing	-	Reported	top500.org hpc.llnl.gov
CPU	- Intel Xeon Platinum 9242 48C 2.3GHz	Intel INTCNASDAQ	-	Reported	top500.org
Interconnect	Omni-Path Architecture Interconnect Fat tree · 100 Gb/s per port · About 1 microsecond Intel Omni-Path / Cornelis Networks Omni-Path	Cornelis Networks	-	Reported	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	Lawrence Livermore National Laboratory	-	Reported	top500.org hpc.llnl.gov

The read

Penguin Computing cluster of Intel Xeon Platinum 9242 48C 2.3GHz processors on Intel Omni-Path in LLNL's SCF zone, an NNSA CTS-1 commodity system. TOP500 lists it as LLNL/NNSA CTS-1 MAGMA with 62,400 cores, Rmax 3.24 PFlop/s, Rpeak 4.59 PFlop/s and 887 kW, installed 2019, first ranked 69th in November 2019 and still on the June 2026 list at 402nd. LLNL's hardware page counts 772 nodes (732 batch, 20 debug, 8 login), 74,112 cores and a combined CPU peak of 5.313 PFlops, commissioned 2020; the HPL run used a smaller core count, so the HPL-run figures are recorded. Vendor Penguin, TOSS 4, Slurm. TOP500 is the only source for Rmax, so the tier is reported.

Timeline

2019-11 List debut at #69 (November 2019) source
2020 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.

#69: TOP500, November 2019 →

Site & facility

Livermore Computing Center

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

hpc.llnl.gov llnl.gov

Change history

2026-10-02 Added Magma, LLNL's CTS-1 Cascade Lake AP cluster

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	Omni-Path Architecture, 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.