Supercomputers/Systems/OCuLUS (Paderborn)
Germany · decommissioned · hpc
OCuLUS (Paderborn)
Also known as Owl CLUSter; PC2 OCuLUS
Operated by Paderborn PC2 .
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
- 188.72 TFlop/s
- Rpeak
- 199.68 TFlop/s
- Rmax ÷ Rpeak
- 94.5%
- Cores
- 9,600
- Power
- -
- Per watt
- - 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 |
|---|---|---|---|---|---|
| CPU | Intel Xeon E5-2670 CPUs x86-64 · 8C · 2.6 GHz · 32 nm · 115 W Intel Xeon E5-2670 8C 2.6 GHz, 552 small and 20 large nodes | Intel | - | Reported | top500.orgpc2.uni-paderborn.de |
| Interconnect | Mellanox InfiniBand QDR Interconnect Fat tree · 40 Gb/s per 4x port QDR InfiniBand PCIe3 40 Gbit/s Mellanox | Mellanox NVDANASDAQ
rolls up to NVIDIA | - | Reported | top500.orgpc2.uni-paderborn.de |
The read
Paderborn Center for Parallel Computing's Owl CLUSter. PC2's system page gives start of operation in March 2013 and retirement in July 2022, 200 TFlop/s CPU peak, 552 small and 20 large nodes with two Xeon E5-2670 CPUs, four 4-socket SMP nodes, GPU nodes updated several times up to 2020, QDR InfiniBand and 500 TB of BeeGFS storage, with 9,920 Intel Sandy Bridge cores. TOP500 lists the ClusterVision CV-AIRE5 system from June 2013 (174th) to June 2015 with 9,600 cores, 188.72 TFlop/s Rmax and 199.68 TFlop/s Rpeak, so the core count here is the TOP500 run and PC2's 9,920 is the full machine.
Timeline
- 2013-03 First operational source
- 2013-06 List debut at #174 (June 2013) source
- 2022-07 Decommissioned source
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 Added OCuLUS (Paderborn), listed on the TOP500 in 2013-06
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 |
|---|---|---|
| pc2.uni-paderborn.de | names system and part | Intel Xeon E5-2670, Mellanox InfiniBand QDR |
| top500.org | names system and part | Intel Xeon E5-2670, Mellanox InfiniBand QDR |
Checked 2026-10-09 by pnpm verify. Re-run it and the table changes with the web.