Supercomputers/Systems/DKRZ Mistral
Germany · operational · hpc
DKRZ Mistral
Also known as Mistral; HLRE-3 Mistral
Operated by DKRZ at DKRZ (Hamburg) .
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
- 3.01 PFlop/s
- Rpeak
- 3.96 PFlop/s
- Rmax ÷ Rpeak
- 76.0%
- Cores
- 99,072
- Power
- 1.12 MW
- Per watt
- 2.7 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 | - Bull bullx DLC 720 / B700 liquid-cooled blades | Bull | - | Reported | top500.orgdkrz.de |
| CPU | Intel Xeon E5-2695 v4 CPUs x86-64 · 18C · 2.1 GHz · 14 nm · 120 W Intel Xeon E5-2695 v4 18C 2.1GHz (Broadwell, phase 2); phase 1 used E5-2680v3 12C 2.5GHz | Intel | - | Reported | top500.org |
| Interconnect | Mellanox InfiniBand FDR Interconnect Fat tree · 56 Gb/s per 4x port · About 1 microsecond Mellanox InfiniBand FDR | NVIDIA | - | Reported | top500.orgdkrz.de |
| Storage | - Xyratex/Seagate parallel file system, 20 PB | Seagate | - | Reported | dkrz.de |
The read
The German Climate Computing Centre's HLRE-3 system for Earth-system research: Bull bullx DLC 720 liquid-cooled blades with Xeon E5-2680v3 Haswell (phase 1, July 2015, 1.4 PFlop/s) and E5-2695v4 Broadwell (phase 2) on Mellanox InfiniBand FDR, with Xyratex/Seagate Lustre storage of 20 PB. TOP500 lists 99,072 cores, Rmax 3.01 and Rpeak 3.96 PFlop/s at 1,116 kW. The status date reflects the latest TOP500 listing shown on its TOP500 page (June 2025); Levante is its successor at DKRZ.
Timeline
Public list appearances
Pointers only: rank and edition, linking to the canonical entry. We do not reproduce list tables. See sourcing policy.
Site & facility
Change history
- 2026-10-02 Added DKRZ Mistral, the German Climate Computing Centre system, 73rd on the June 2019 TOP500
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 | Intel Xeon E5-2695 v4, Mellanox InfiniBand FDR |
| dkrz.de | names system only | - |
Checked 2026-10-09 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.