Zeus (Cyfronet)

Also known as Cyfronet Zeus; Zeus HP cluster

Operated by Cyfronet AGH at Cyfronet AGH, Krakow .

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: 1263 of 1345 systems have a readable citation that names them, and 56 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: 266.94 TFlop/s
Rpeak: 373.89 TFlop/s
Rmax ÷ Rpeak: 71.4%
Cores: 25,468
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 Cluster Platform 3000 SL390/BL2x220	Hewlett Packard Enterprise HPENYSE	-	Reported	top500.org
Accelerator	- NVIDIA 2090 GPU accelerators	NVIDIA NVDANASDAQ	-	Reported	top500.org
CPU	Intel Xeon X5650 CPUs x86-64 · 6C · 2.66 GHz · 32 nm · 95 W Intel Xeon X5650 6-core 2.66 GHz	Intel INTCNASDAQ	-	Reported	top500.org
Interconnect	Mellanox InfiniBand QDR Interconnect Fat tree · 40 Gb/s per 4x port Mellanox InfiniBand QDR	NVIDIA NVDANASDAQ	-	Reported	top500.org

The read

Cyfronet AGH's HP Cluster Platform 3000 SL390/BL2x220 system, installed in 2011 with Xeon X5650 six-core CPUs, NVIDIA 2090 GPU accelerators and InfiniBand QDR. TOP500 lists it on nine lists from June 2011 (81st, then at 11,694 cores and 104.8 TFlop/s) to November 2015 (387th); the final configuration shown on the system page is 25,468 cores, 266.94 TFlop/s Rmax and 373.89 TFlop/s Rpeak, which are the figures recorded here. An earlier smaller Cyfronet entry named Zeus (TOP500 system 176112, 2,048 cores, 2008) is the predecessor configuration. Only TOP500 was reachable as a source, so the tier is reported and the status date is the last list appearance.

Timeline

2011 First operational source
2011-06 List debut at #81 (June 2011) source

Public list appearances

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

#81: TOP500, June 2011 →

Site & facility

Cyfronet AGH, Krakow

Location: Krakow, Poland
Commissioned: 2021

oferta-badawcza.agh.edu.pl top500.org

Change history

2026-10-09 Added Zeus (Cyfronet)

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.

Every source cited on this page was readable, and none of them mentions this system. They are cited at page granularity, normally because no stable deep link could be found. That is a real weakness in this row and it is why the system carries a confidence tier below verified. See how this check works.

Cited source	Result	Found on the page
top500.org	does not name this system	Intel Xeon X5650, Mellanox InfiniBand QDR

Checked 2026-10-13 by pnpm verify. Re-run it and the table changes with the web.