Supercomputers/Systems/LUMI
Finland · upgraded · mixed
LUMI
Operated by CSC at LUMI Data Center, Kajaani.
Phase 1 seed dataset — under review. These rows were compiled by hand from public operator, laboratory and vendor sources, and have not yet been through a second-reader verification pass. Every claim carries its source and a confidence tier; treat anything below verified as a lead, not a citation.
Measured performance
- Rmax
- 379.7 PFlop/s
- Rpeak
- 531.5 PFlop/s
- Rmax ÷ Rpeak
- 71.4%
- Cores
- 2,752,704
- Power
- 7.11 MW
- Per watt
- 53.4 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.
The read
Architecturally a smaller Frontier — same AMD compute, same Slingshot fabric, same HPE integration — which makes it the site's best example of why component share and machine count diverge. Its interest here is the facility layer: hydroelectric supply, a reported PUE near 1.03, and waste heat sold into the Kajaani district heating network. Owned by the EuroHPC Joint Undertaking and hosted by CSC, so the operator and the funder are different entities, which the schema keeps separate.
Timeline
- 2020 Announced source
- 2022-06 List debut at #3 (June 2022) source
- 2022-06 First operational source
- 2023-06 LUMI-G partition expansion source
Public list appearances
Pointers only — rank and edition, linking to the canonical entry. We do not reproduce list tables. See sourcing policy.
Site & facility
LUMI Data Center, Kajaani
- Location
- Kajaani, Finland
- Cooling
- Direct liquid cooling with waste-heat recovery
- PUE
- 1.03
- Commissioned
- 2022