USA · operational · mixed

Ursa

Also known as NOAA Ursa RDHPCS

Operated by NOAA at NOAA NESCC (Fairmont) .

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: -
Rpeak: 7.73 PFlop/s
Rmax ÷ Rpeak: -
Cores: 110,592
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	- GDIT, NOAA RDHPCS systems contractor	GDIT	-	Reported	nextplatform.com
Accelerator	- NVIDIA H100 NVL, 2 per node on 58 GPU nodes	NVIDIA NVDANASDAQ	116 reported	Reported	docs.rdhpcs.noaa.gov
CPU	AMD EPYC 9004 (Genoa) CPUs x86-64 · 96C · 2.4 GHz · TSMC N5 · 360 W AMD Genoa 9654, 96 cores, 576 CPU nodes and 58 GPU nodes	AMD AMDNASDAQ	-	Reported	docs.rdhpcs.noaa.gov epic.noaa.gov
Interconnect	NVIDIA InfiniBand NDR (Quantum-2) Interconnect Fat tree or dragonfly+ · 400 Gb/s per port · Under 0.6 microseconds NDR-200 InfiniBand	NVIDIA NVDANASDAQ	-	Reported	docs.rdhpcs.noaa.gov

The read

NOAA's Tier-1 Research and Development HPC system at the NOAA Environmental Security Computing Center in Fairmont, West Virginia, contracted through GDIT. NOAA's user guide lists 576 CPU nodes with two 96-core AMD EPYC 9654 (Genoa) processors each (110,592 cores, 4.25 PFlop/s), a GPU partition of 58 nodes each with two NVIDIA H100 NVL GPUs (3.48 PFlop/s), exploratory NVIDIA GH200 and AMD MI300X partitions, NDR-200 InfiniBand and over 100 PB of disk shared with Hera. The peak figure here, 7.73 PFlop/s, is the sum of the CPU and GPU partition figures on that page. NOAA's user guide says Ursa was introduced to the NOAA community on 20 June 2024, and a NOAA Earth Prediction Innovation Center post of 22 August 2025 reports the UFS Weather Model ported and running on it; the start year 2025 rests on that post. The separate Rhea system announced in September 2024 is a different NOAA machine and is not recorded here. Both sources are NOAA documents, so the tier is reported.

Timeline

2024-06 Announced source
2025 First operational source

Site & facility

NOAA NESCC (Fairmont)

Location: Fairmont, WV, USA

docs.rdhpcs.noaa.gov noaa.gov

Change history

2026-10-01 Added Ursa (NOAA)

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
docs.rdhpcs.noaa.gov	names system only	-
epic.noaa.gov	names system only	-

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