Konrad (HLRN-III)

Also known as HLRN-III Berlin

Operated by Zuse Institute Berlin at ZIB Berlin .

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: 991.52 TFlop/s
Rpeak: 1.43 PFlop/s
Rmax ÷ Rpeak: 69.5%
Cores: 44,928
Power: 877.5 kW
Per watt: 1.1 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 XC30, expanded to Cray XC40 in 2014	Cray HPENYSE rolls up to Hewlett Packard Enterprise	-	Verified	top500.org heise.de
CPU	- Xeon E5-2695v2 12C 2.4GHz (phase 1) and E5-2680v3 12C 2.5GHz (phase 2), 44,928 cores in total	Intel INTCNASDAQ	-	Reported	top500.org heise.de
Interconnect	Cray Aries Interconnect Dragonfly · About 10 GB/s per direction · Around 1 microsecond Cray Aries	Cray HPENYSE rolls up to Hewlett Packard Enterprise	-	Verified	top500.org computermuseum.zib.de
Operating system	Cray Linux Environment Operating systems Linux, Cray-customised · Proprietary layer over open-source Linux Cray Linux Environment	Cray HPENYSE rolls up to Hewlett Packard Enterprise	-	Reported	top500.org

The read

Berlin half of the northern German HLRN-III complex, a Cray XC30 expanded to an XC40 with Haswell nodes, 52nd on the November 2014 TOP500. TOP500 gives 44,928 cores of Xeon E5-2695v2 and E5-2680v3 on the Cray Aries network, 991.5 TFlop/s Rmax and 1.426 PFlop/s Rpeak. Heise reports that Konrad and its Hannover twin Gottfried went into operation on 16 January 2014 as Cray XC30s with 17,856 12-core Xeon E5-2695v2 cores each, with a phase-two Haswell expansion planned; ZIB's computer museum page confirms the Aries-based XC30 install in autumn 2013 and a second-stage expansion in autumn 2014. ZIB's event page 'Goodbye Konrad. Welcome Lise!' marks the hand-over to HLRN-IV in December 2019; no exact shutdown date is recorded. Gottfried at Hannover is not added here. Final-phase figures are TOP500-only.

Timeline

2014-01 First operational source
2014-11 List debut at #52 (November 2014) source

Public list appearances

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

#52: TOP500, November 2014 →

Site & facility

ZIB Berlin

Location: Berlin, Germany
Commissioned: 2019

berlin.de top500.org

Change history

2026-10-02 Added Konrad, HLRN-III Berlin

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
heise.de	names system only	-
top500.org	names system and part	Cray Aries, Cray Linux Environment

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