Swierk Computing Centre

Also known as CIS Swierk; NCBJ Swierk cluster

Operated by NCBJ at NCBJ Swierk Campus .

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: 423.16 TFlop/s
Rpeak: 490.43 TFlop/s
Rmax ÷ Rpeak: 86.3%
Cores: 17,960
Power: 334 kW
Per watt: 1.3 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 DLC B720 direct liquid cooled system	Bull ATOEPA rolls up to Atos	-	Reported	top500.org
Integrator	- Supermicro TwinBlade SBI-7227R servers	Supermicro SMCINASDAQ	-	Reported	top500.org
CPU	- Intel Xeon E5-2680 v2 10C 2.8GHz and Xeon E5-2650 v3 10C hosts, 1,916 processors	Intel INTCNASDAQ	-	Reported	top500.org ncbj.gov.pl
Interconnect	- InfiniBand QDR/FDR	NVIDIA NVDANASDAQ	-	Reported	top500.org
Cooling	Direct liquid cooling, warm water Cooling Direct-to-chip cold plates, facility water loop · Removes 90+ percent of node heat to liquid Hot-water direct liquid cooling, PUE 1.02	Bull ATOEPA rolls up to Atos	-	Reported	ncbj.gov.pl top500.org

The read

Hot-water direct-liquid-cooled cluster of the National Centre for Nuclear Research (NCBJ) at Swierk near Otwock, built from Supermicro TwinBlade SBI-7227R servers in Bull DLC B720 packaging with Xeon E5-2680v2 and E5-2650v3 10C hosts on InfiniBand QDR/FDR running Scientific Linux. TOP500 lists 17,960 cores, Rmax 423.16 and Rpeak 490.43 TFlop/s at 334 kW, ranked 155th in June 2015, 218th in November 2015, 293rd in June 2016 and 401st in November 2016. NCBJ's July 2015 announcement gives 19,880 cores on 1,916 processors with 119.75 TB of RAM and over 2.9 PB of disk, 86 percent HPL efficiency and a PUE of 1.02, and names it the fourth fastest cluster in Poland; the larger NCBJ core count is the installed total rather than the benchmarked partition. Part of the Swierk Computing Centre project (January 2009 to October 2015, co-funded 85 percent by the EU regional development fund).

Timeline

2015 First operational source
2015-06 List debut at #155 (June 2015) source

Public list appearances

Pointers only: rank and edition, linking to the canonical entry. We do not reproduce list tables. See sourcing policy.

#155: TOP500, June 2015 →

Site & facility

NCBJ Swierk Campus

Location: Otwock (Swierk), Poland
Cooling: Direct liquid cooling (warm water)
PUE: 1.02
Commissioned: 2015

ncbj.gov.pl cis.gov.pl

Change history

2026-10-09 Added Swierk Computing Centre

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 only	-
ncbj.gov.pl	names system only	-

Checked 2026-10-09 by pnpm verify. Re-run it and the table changes with the web.