Norway · decommissioned · hpc

Hexagon

Also known as Hexagon Cray XE6m-200 (University of Bergen)

Operated by University of Bergen at University of Bergen (Hexagon site) .

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: 160.10 TFlop/s
Rpeak: 204.90 TFlop/s
Rmax ÷ Rpeak: 78.1%
Cores: 22,272
Power: 342.3 kW
Per watt: 0.5 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	- Cray XE6m-200	Cray HPENYSE rolls up to Hewlett Packard Enterprise	-	Verified	top500.org cug.org
CPU	AMD Opteron 6276 (Interlagos) CPUs x86-64 · 16C · 2.3 GHz · 32 nm · 115 W AMD Opteron 6276 16C 2.3GHz (Interlagos)	AMD AMDNASDAQ	-	Reported	top500.org cug.org
Interconnect	Cray Gemini Interconnect 3D torus · About 6 GB/s per direction per link · Around 1 microsecond Cray Gemini	Cray HPENYSE rolls up to Hewlett Packard Enterprise	-	Verified	top500.org cug.org

The read

The University of Bergen's national-infrastructure Cray, installed in January 2008 as a Cray XT4 of 1,388 quad-core Opteron nodes (66th on the November 2008 TOP500) and rebuilt in March 2012 with XE6 blades, Cray Gemini network chips and Opteron Interlagos CPUs, quadrupling the core count to 22,272, as a University of Bergen paper at CUG 2017 describes. TOP500 lists the XE6m-200 at 160.1 TFlop/s Rmax, 204.9 TFlop/s peak and 342.3 kW, ranking it 112th in June 2012. Sigma2's history gives 2017 as the end of its life. The first operational date is the XT4 installation and the figures are for the XE6m generation. TOP500 is the only source for Rmax.

Timeline

2008-01 First operational source
2012-06 List debut at #112 (June 2012) source
2017 Decommissioned source

Public list appearances

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

#112: TOP500, June 2012 →

Site & facility

University of Bergen (Hexagon site)

Location: Bergen, Norway
Commissioned: 2008

sigma2.no cug.org

Change history

2026-10-02 Added Hexagon, Bergen

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 Opteron 6276 (Interlagos), Cray Gemini
sigma2.no	names system only	-

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