Supercomputers/Systems/Rackham
Sweden · decommissioned · hpc
Rackham
Also known as UPPMAX Rackham
Operated by UPPMAX at UPPMAX (Uppsala) .
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: 1263 of 1345 systems have a readable citation that names them, and 56 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
- -
- Rpeak
- -
- Rmax ÷ Rpeak
- -
- Cores
- 6,160
- 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 |
|---|---|---|---|---|---|
| CPU | - Intel Xeon E5-2630 v4 10-core 2.2 GHz, two per node across 308 compute nodes | Intel | 616 estimated | Reported | docs.uppmax.uu.se |
The read
UPPMAX's general-purpose national HPC cluster at the Angstrom Laboratory in Uppsala, introduced in February 2017 and replaced by Pelle. UPPMAX's hardware page gives its node table as 272 nodes with 128 GB, 32 with 256 GB and four with 1 TB, all with two Xeon E5-2630 v4 10-core 2.2 GHz CPUs (20 cores per node), plus four login nodes; the 6,160 cores recorded here are arithmetic from the 308 compute nodes in that table. The page estimated production until 1 January 2023, and the Rackham user guide says it was shut down completely and replaced by Pelle on 30 January 2026. The UPPMAX documentation is the only source and gives no performance figure, so the tier is reported and no TOP500 appearance is recorded.
Site & facility
Change history
- 2026-10-09 Rackham added from its source pages
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.uppmax.uu.se | names system only | - |
Checked 2026-10-13 by pnpm verify. Re-run it and the table changes with the web.