Supercomputers/Systems/Gottfried
Germany · operational · hpc
Gottfried
Also known as HLRN-III Gottfried; HLRN Hannover
Operated by LUIS Hannover .
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
- 829.80 TFlop/s
- Rpeak
- 1.24 PFlop/s
- Rmax ÷ Rpeak
- 66.8%
- Cores
- 40,320
- Power
- 787.5 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 an XC40 with Haswell nodes | Cray HPENYSE
rolls up to Hewlett Packard Enterprise | - | Verified | top500.orgheise.de |
| CPU | - Intel Xeon E5-2695v2 12-core 2.4 GHz (17,856 cores in the first stage), later with E5-2680v3 12-core 2.5 GHz nodes | Intel | - | Verified | top500.orgheise.de |
| Interconnect | Cray Aries Interconnect Dragonfly · About 10 GB/s per direction · Around 1 microsecond Cray Aries interconnect | Cray HPENYSE
rolls up to Hewlett Packard Enterprise | - | Reported | top500.org |
| 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
The Hannover half of the northern German HLRN-III complex, a Cray XC30 later expanded to an XC40, run at Leibniz University Hannover's IT services centre (formerly RRZN). Heise's report of 16 January 2014 says Gottfried and its Berlin twin Konrad (recorded as Konrad (HLRN-III)) were officially put into operation that day, named for Gottfried Wilhelm Leibniz, with 17,856 cores of 12-core Xeon E5-2695v2 each in the first stage and an EUR 30 million joint federal and state investment. TOP500 lists the same 17,856-core XC30 at 121st in November 2013 and then, after the Haswell expansion, 40,320 cores of Xeon E5-2695v2 and E5-2680v3 on the Aries network at 829.80 TFlop/s Rmax, 1,241.39 TFlop/s Rpeak and 787.5 kW, 62nd in November 2014 and 379th in June 2018, its last list. The status date is that last appearance.
Timeline
Public list appearances
Pointers only: rank and edition, linking to the canonical entry. We do not reproduce list tables. See sourcing policy.
Change history
- 2026-10-09 Gottfried added, verified on TOP500 and the operator or a second source
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 2026-10-13 by pnpm verify. Re-run it and the table changes with the web.
Further reading
Operating a supercomputer
Acceptance testing, why "installed" and "in production" are six months apart, and the machine lifecycle.
Inside a node
Latency-optimised versus throughput-optimised processors, NUMA, and the end of the host-to-device copy.
The interconnect
Topologies, why latency and tail behaviour matter more than bandwidth, and how the fabric market consolidated.