USA · operational · hpc

Aitken

Operated by NASA at NASA Advanced Supercomputing Facility .

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: 9.07 PFlop/s
Rpeak: 12.49 PFlop/s
Rmax ÷ Rpeak: 72.6%
Cores: 293,936
Power: 2.01 MW
Per watt: 4.5 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 Apollo 9000 racks and E-Cells	Hewlett Packard Enterprise HPENYSE	-	Reported	nas.nasa.gov top500.org
CPU	AMD EPYC 7742 (Rome) CPUs x86-64 · 64C · 2.25 GHz · 7 nm · 225 W AMD EPYC 7742 64C 2.25GHz (2,048 Rome nodes)	AMD AMDNASDAQ	-	Verified	top500.org nas.nasa.gov
CPU	AMD EPYC 7763 (Milan) CPUs x86-64 · 64C · 2.45 GHz · 7 nm · 280 W AMD EPYC 7763 (512 Milan nodes)	AMD AMDNASDAQ	-	Reported	nas.nasa.gov
CPU	- Intel Xeon Gold 6248 (1,116 Cascade Lake nodes)	Intel INTCNASDAQ	-	Reported	nas.nasa.gov
Interconnect	NVIDIA InfiniBand HDR Interconnect Fat tree or dragonfly+ · 200 Gb/s per port · About 0.6 microseconds InfiniBand EDR and HDR	NVIDIA NVDANASDAQ	-	Reported	nas.nasa.gov top500.org

The read

NASA's modular supercomputer in the Modular Supercomputing Facility at Ames Research Center, run by the NASA Advanced Supercomputing division, first installed in 2019 as an Intel module and later expanded with AMD Rome and Milan racks. TOP500 lists the HPE system as AMD EPYC 7742 64C 2.25GHz over Mellanox HDR InfiniBand, with Rmax 9.07 PFlop/s, Rpeak 12.49 PFlop/s, 293,936 cores and 2,010.1 kW; it appeared from June 2021 (rank 72, 5.80 PFlop/s) and reached rank 58 on the June 2022 list after an expansion. NASA's page independently states 9.07 PFlop/s LINPACK (58th on June 2022), 2,048 EPYC 7742 Rome nodes and 512 EPYC 7763 Milan nodes, plus 1,116 Xeon Gold 6248 Cascade Lake nodes, 369,760 total cores and 15.49 PFlop/s theoretical peak over InfiniBand EDR and HDR. The recorded cores and peak are the TOP500 run, which covers only part of the machine.

Timeline

2019 First operational source
2022-06 List debut at #58 (June 2022) source

Public list appearances

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

#58: TOP500, June 2022 →

Site & facility

NASA Advanced Supercomputing Facility

Location: Moffett Field, CA, USA
Cooling: Air and liquid hybrid
Commissioned: 1987

nas.nasa.gov

Change history

2026-10-02 Added Aitken

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	AMD EPYC 7742 (Rome), AMD EPYC 7763 (Milan), NVIDIA InfiniBand HDR
nas.nasa.gov	names system and part	NVIDIA InfiniBand HDR

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