Germany · decommissioned · hpc

HLRB-II

Also known as Hoechstleistungsrechner in Bayern II, SGI Altix 4700

Operated by LRZ at Leibniz Supercomputing Centre, Garching .

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: 56.52 TFlop/s
Rpeak: 62.26 TFlop/s
Rmax ÷ Rpeak: 90.8%
Cores: 9,728
Power: 990 kW
Per watt: 0.1 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	- SGI Altix 4700	SGI HPENYSE rolls up to Hewlett Packard Enterprise	-	Reported	top500.org doku.lrz.de
CPU	- Itanium 2 Montecito dual-core 1.6 GHz	Intel INTCNASDAQ	-	Reported	top500.org doku.lrz.de
Interconnect	- NUMAlink 4	SGI HPENYSE rolls up to Hewlett Packard Enterprise	-	Reported	top500.org doku.lrz.de
Operating system	SUSE Linux Enterprise Server Operating systems Linux distribution · Open source, commercial support subscription SUSE Linux Enterprise Server 10	SUSE	-	Reported	top500.org

The read

The Leibniz Supercomputing Centre's national SGI Altix 4700 shared-memory system in Garching. The second phase of 9,728 dual-core Itanium 2 Montecito cores at 1.6 GHz on NUMAlink 4 reached 56.5 TFlop/s Linpack and 62.3 TFlop/s peak with 39 TB of memory per the LRZ documentation, and was 28th on the June 2008 TOP500 (10th at its June 2007 debut). TOP500 lists it from June 2007 through November 2011; LRZ now documents it as a decommissioned system.

Timeline

2007 First operational source
2008-06 List debut at #28 (June 2008) source

Public list appearances

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

#28: TOP500, June 2008 →

Site & facility

Leibniz Supercomputing Centre, Garching

Location: Garching, Germany
Cooling: Direct warm-water cooling
Commissioned: 2006

doku.lrz.de

Change history

2026-10-02 Added HLRB-II, LRZ's Altix 4700

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
doku.lrz.de	blocked our fetch	-
top500.org	names system and part	SUSE Linux Enterprise Server

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