Supercomputers/Systems/MUSICA
Austria · operational · hpc
MUSICA
Also known as Multi-Site Computer Austria
Operated by Austrian Scientific Computing .
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
- 31.84 PFlop/s
- Rpeak
- 53.76 PFlop/s
- Rmax ÷ Rpeak
- 59.2%
- Cores
- 161,280
- 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 Neptune direct-liquid-cooled nodes | Lenovo | - | Verified | top500.orgdocs.asc.ac.at |
| Accelerator | NVIDIA H100 SXM5 94GB Accelerators CUDA (Hopper GH100) · 16,896C · 1.98 GHz · TSMC 4N · 700 W 4x NVIDIA H100 SXM5 94GB per GPU node; 112+80+80 GPU nodes across three sites | NVIDIA | 1,088 estimated | Reported | docs.asc.ac.attop500.org |
| CPU | AMD EPYC 9004 (Genoa) CPUs x86-64 · 96C · 2.4 GHz · TSMC N5 · 360 W AMD EPYC 9654 96C 2.4GHz, two per node | AMD | - | Verified | top500.orgdocs.asc.ac.at |
| Interconnect | NVIDIA InfiniBand NDR (Quantum-2) Interconnect Fat tree or dragonfly+ · 400 Gb/s per port · Under 0.6 microseconds Infiniband NDR200 | NVIDIA | - | Verified | top500.orgdocs.asc.ac.at |
| Storage | WEKA Data Platform Storage Parallel filesystem, software-defined 4 PB all-NVMe Weka parallel file system per site | WEKA | - | Reported | docs.asc.ac.at |
| Cooling | Direct liquid cooling, warm water Cooling Direct-to-chip cold plates, facility water loop · Removes 90+ percent of node heat to liquid Lenovo Neptune 3rd generation direct liquid cooling with rear-door heat exchangers | Lenovo | - | Reported | docs.asc.ac.at |
The read
Austria's Multi-Site Computer, led by TU Wien and run by Austrian Scientific Computing across Vienna, Innsbruck and Linz: 440 Lenovo Neptune direct-liquid-cooled nodes, of which 272 are GPU nodes with four NVIDIA H100 SXM5 94GB GPUs and two AMD EPYC 9654 processors, on InfiniBand NDR200 with 4 PB of all-NVMe Weka storage per site. TOP500 lists the entry as MUSICA Phase 1 (161,280 cores, Rmax 31.84 PFlop/s, Rpeak 53.76 PFlop/s, no power figure); the operator's page says it ranked 50th on the November 2024 list. ASC states an aggregate 45.11 PFlop/s Rmax as of June 2026, split across two June 2026 TOP500 entries, so the figures here describe the Phase 1 entry rather than the whole system. Three sites, so the system is left unlocated.
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 MUSICA, Austria's multi-site H100 system, 50th on the November 2024 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 |
|---|---|---|
| docs.asc.ac.at | names system and part | AMD EPYC 9004 (Genoa), NVIDIA H100 SXM5 94GB, NVIDIA InfiniBand NDR (Quantum-2), WEKA Data Platform, Direct liquid cooling, warm water |
| top500.org | names system and part | AMD EPYC 9004 (Genoa), NVIDIA H100 SXM5 94GB, NVIDIA InfiniBand NDR (Quantum-2) |
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.