Supercomputers/Systems/VSC-4
Austria · operational · hpc
VSC-4
Operated by Vienna Scientific Cluster at Vienna Scientific Cluster .
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
- 2.73 PFlop/s
- Rpeak
- 3.76 PFlop/s
- Rmax ÷ Rpeak
- 72.6%
- Cores
- 37,920
- 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 | - Lenovo ThinkSystem SD650 | Lenovo | - | Reported | top500.org |
| CPU | Intel Xeon Platinum 8174 CPUs x86-64 · 24C · 3.1 GHz · 14 nm · 240 W Xeon Platinum 8174 24C 3.1GHz, 790 nodes, 37,920 cores | Intel | - | Reported | top500.org |
| Interconnect | - Intel Omni-Path | Intel | - | Reported | top500.org |
The read
Fourth system of the Vienna Scientific Cluster consortium, a Lenovo ThinkSystem SD650 machine and 82nd on the June 2019 TOP500, with 37,920 cores of Xeon Platinum 8174 24-core 3.1 GHz on Intel Omni-Path, 2.73 PFlop/s Rmax and 3.76 PFlop/s Rpeak. The University of Vienna's IT page lists 790 nodes of Intel Platinum processors in standard (96 GB), fat (384 GB) and very fat (768 GB) variants, direct water cooling that captures about 90 percent of the waste heat, and the same 82nd place. TOP500 still lists the machine at 489th in June 2026, and the university page presents it beside the newer VSC-5. Core count, Rmax and Rpeak are TOP500-only.
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
- 2026-10-02 Added VSC-4, Vienna Scientific Cluster
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 | Intel Xeon Platinum 8174 |
| zid.univie.ac.at | names system and part | Intel Xeon Platinum 8174 |
Checked 2026-10-09 by pnpm verify. Re-run it and the table changes with the web.
Further reading
Operating a supercomputer
Acceptance testing, why "installed" and "in production" are six months apart, and the machine lifecycle.
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.