Supercomputers/Systems/Barnard
Germany · operational · hpc
Barnard
Also known as NHR@TUD Barnard; Barnard CPU cluster
Operated by TU Dresden at TU Dresden ZIH .
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
- 3.05 PFlop/s
- Rpeak
- 4.05 PFlop/s
- Rmax ÷ Rpeak
- 75.3%
- Cores
- 65,520
- Power
- 535.7 kW
- Per watt
- 5.7 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 | - EVIDEN BullSequana X2140 | Eviden | - | Reported | top500.org |
| CPU | - Intel Xeon Platinum 8470 52C 2.0GHz, two per node | Intel | - | Verified | top500.orgcompendium.hpc.tu-dresden.de |
| Interconnect | NVIDIA InfiniBand HDR Interconnect Fat tree or dragonfly+ · 200 Gb/s per port · About 0.6 microseconds Mellanox HDR InfiniBand (ConnectX-6) | NVIDIA | - | Verified | top500.orgcompendium.hpc.tu-dresden.de |
| Operating system | Red Hat Enterprise Linux Operating systems Linux distribution · Open source, commercial support subscription Red Hat Enterprise Linux | Red Hat | - | Reported | top500.org |
The read
General-purpose CPU cluster of the TU Dresden Center for Information Services and High Performance Computing (ZIH), introduced in 2023. TOP500 lists it as an Eviden BullSequana X2140 with Intel Xeon Platinum 8470 52-core 2 GHz processors, Mellanox HDR InfiniBand and Red Hat Enterprise Linux, 65,520 cores, Rmax 3.05 PFlop/s, Rpeak 4.05 PFlop/s and 535.7 kW. The ZIH HPC Compendium independently describes dual Xeon Platinum 8470 (52 cores, 2.00 GHz) nodes with 512 GiB of memory (90 nodes with 1 TiB) and ConnectX-6 InfiniBand HDR; it does not give a total node count, so none is recorded here. TOP500 shows it debuting 238th on the June 2023 list and still ranked in June 2026 (444th). This is the CPU-only sibling of the Capella GPU cluster at the same centre.
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 Barnard, TU Dresden's Sapphire Rapids CPU cluster
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 |
|---|---|---|
| compendium.hpc.tu-dresden.de | names system and part | NVIDIA InfiniBand HDR |
| top500.org | names system and part | NVIDIA InfiniBand HDR |
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.