Supercomputers/Systems/BEM
Poland · operational · hpc
BEM
Also known as WCSS Bem Actina Solar cluster; Bem 1
Operated by WCSS at WCSS Data Centre (Wroclaw) .
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
- 695.59 TFlop/s
- Rpeak
- 859.55 TFlop/s
- Rmax ÷ Rpeak
- 80.9%
- Cores
- 22,656
- Power
- 353 kW
- Per watt
- 2.0 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 E5-2697 v3 CPUs x86-64 · 14C · 2.6 GHz · 22 nm · 145 W Intel Xeon E5-2697v3 14-core and E5-2670v3 CPUs | 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.org |
The read
The first Bem supercomputer of the Wroclaw Centre for Networking and Supercomputing, a cluster built by the Polish vendor ACTION from Actina Solar 820 S6 servers with Xeon E5-2670v3 and E5-2697v3 CPUs on InfiniBand FDR. TOP500 lists 22,656 cores, 695.59 TFlop/s Rmax, 859.55 TFlop/s Rpeak and 353 kW, with its best placing at 128th in November 2015 and a last appearance at 385th in November 2017. Bem 2 and Lem are recorded separately. TOP500 is the only source, so the tier is reported and the status date is the last list appearance.
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
- 2026-10-09 Added BEM
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.
Every source cited on this page was readable, and none of them mentions this system. They are cited at page granularity, normally because no stable deep link could be found. That is a real weakness in this row and it is why the system carries a confidence tier below verified. See how this check works.
| Cited source | Result | Found on the page |
|---|---|---|
| top500.org | does not name this system | Intel Xeon E5-2697 v3, Mellanox InfiniBand FDR |
Checked 2026-10-13 by pnpm verify. Re-run it and the table changes with the web.