Germany · decommissioned · hpc

ForHLR I

Also known as Forschungshochleistungsrechner ForHLR Phase I

Operated by Karlsruhe Institute of Technology at KIT Scientific Computing Centre (Karlsruhe) .

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: 206.30 TFlop/s
Rpeak: 216.00 TFlop/s
Rmax ÷ Rpeak: 95.5%
Cores: 10,800
Power: 205 kW
Per watt: 1.0 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
Integrator	- MEGWARE MiriQuid cluster	MEGWARE	-	Reported	top500.org scc.kit.edu
CPU	- Intel Xeon E5-2670v2 10C 2.5 GHz (Ivy Bridge-EP), 512 thin nodes plus 16 fat nodes	Intel INTCNASDAQ	-	Reported	top500.org scc.kit.edu
Interconnect	Mellanox InfiniBand FDR Interconnect Fat tree · 56 Gb/s per 4x port · About 1 microsecond InfiniBand 4X FDR	Mellanox NVDANASDAQ rolls up to NVIDIA	-	Reported	top500.org scc.kit.edu
Operating system	Red Hat Enterprise Linux Operating systems Linux distribution · Open source, commercial support subscription Red Hat Enterprise Linux 6	Red Hat IBMNYSE rolls up to IBM	-	Reported	top500.org scc.kit.edu

The read

First phase of the research high-performance computer jointly funded by Baden-Wuerttemberg and the federal government, run by KIT's Steinbuch Centre for Computing. KIT's page says SCC operated it from late September 2014 to April 2020 and describes 512 thin nodes (20 cores, 64 GB) and 16 fat nodes (32 cores, 512 GB) of Intel Xeon Ivy Bridge-EP, 540 nodes in all, FDR InfiniBand, 216 TFlop/s theoretical peak, 41.1 TB of memory, RHEL 6 and Lustre. TOP500 lists the MEGWARE MiriQuid system from June 2014 (243rd) to June 2015 with 10,800 cores, 206.3 TFlop/s Rmax, 216 TFlop/s Rpeak and 205 kW. Two independent organisations agree on the hardware, so the tier is verified. Successor ForHLR II is a separate entry.

Timeline

2014-06 List debut at #243 (June 2014) source
2014-09 First operational source
2020-04 Decommissioned source

Public list appearances

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

#243: TOP500, June 2014 →

Site & facility

KIT Scientific Computing Centre (Karlsruhe)

Location: Karlsruhe, Germany

nemo.uni-freiburg.de

Change history

2026-10-09 Added ForHLR I, listed on the TOP500 in 2014-06

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
top500.org	names system and part	Mellanox InfiniBand FDR
scc.kit.edu	names system and part	Mellanox InfiniBand FDR

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