Supercomputers/Systems/HLRB SR8000-F1
Germany · decommissioned · hpc
HLRB SR8000-F1
Also known as Hitachi SR8000-F1/112
Operated by LRZ .
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
- 1.03 TFlop/s
- Rpeak
- 1.34 TFlop/s
- Rmax ÷ Rpeak
- 77.0%
- Cores
- -
- 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 |
|---|---|---|---|---|---|
| Integrator | - Hitachi SR8000-F1/112 | Hitachi | - | Reported | top500.orglrz.de |
| CPU | - Hitachi SR8000 375 MHz processor | Hitachi | - | Reported | top500.orglrz.de |
| Interconnect | - Multi-dimensional crossbar | Hitachi | - | Reported | top500.orglrz.de |
| Operating system | Hitachi HI-UX/MPP Operating systems Unix (Mach 3.0 microkernel), Hitachi-customised · Proprietary HI-UX/MPP | Hitachi | - | Reported | top500.orglrz.de |
The read
The Hitachi SR8000-F1 that opened LRZ's national supercomputing service (HLRB) in 2000 and was ranked fifth worldwide on the June 2000 TOP500 at 1,035 GFlop/s Rmax. TOP500 lists 112 nodes of 375 MHz SR8000 processors on a multi-dimensional crossbar running HI-UX/MPP, which is why no core count is recorded: the 112 is a node count. LRZ's own page quotes 1,344 processors and 1,653 GFlop/s peak for the HLRB system, a different configuration from the 1.344 TFlop/s peak TOP500 shows for this entry, so the TOP500 figures are used. It was in Munich, before LRZ's move to Garching, so no site is linked. No source we fetched gives a shutdown date. TOP500 is the only source for Rmax, so the tier is reported.
Timeline
Public list appearances
Pointers only: rank and edition, linking to the canonical entry. We do not reproduce list tables. See sourcing policy.
Change history
- 2026-10-02 Added LRZ's Hitachi SR8000-F1 (HLRB), fifth on the June 2000 TOP500
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 | Hitachi HI-UX/MPP |
| lrz.de | names system and part | Hitachi HI-UX/MPP |
Checked 2026-10-09 by pnpm verify. Re-run it and the table changes with the web.
Further reading
Inside a node
Latency-optimised versus throughput-optimised processors, NUMA, and the end of the host-to-device copy.
The interconnect
Topologies, why latency and tail behaviour matter more than bandwidth, and how the fabric market consolidated.
Programming a supercomputer
The software stack beneath the application, and why the OS is now a sovereignty signal as much as a technical choice.