Sweden · decommissioned · hpc

Tetralith

Operated by NSC at NSC Data Centre, Linkoping .

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: 2.97 PFlop/s
Rpeak: 4.34 PFlop/s
Rmax ÷ Rpeak: 68.4%
Cores: 64,512
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
Accelerator	- 170 nodes each with one NVIDIA Tesla T4 GPU	NVIDIA NVDANASDAQ	170 reported	Reported	nsc.liu.se
CPU	- 1,908 compute nodes, two Intel Xeon Gold 6130 16-core 2.1 GHz CPUs each (61,056 cores per NSC)	Intel INTCNASDAQ	-	Reported	nsc.liu.se top500.org
Interconnect	Omni-Path Architecture Interconnect Fat tree · 100 Gb/s per port · About 1 microsecond 100 Gbit/s Intel Omni-Path network	Intel INTCNASDAQ	-	Reported	nsc.liu.se top500.org

The read

NSC's general-purpose national cluster at Linkoping, in service since 2018 and still operational with access granted by NAISS. NSC lists 1,908 compute nodes with two 16-core Intel Xeon Gold 6130 CPUs each (61,056 cores) on 100 Gbit/s Intel Omni-Path, including 170 nodes with an NVIDIA Tesla T4 GPU. TOP500 lists it at 2.97 PFlop/s Rmax and 4.34 PFlop/s Rpeak on 64,512 cores, so the row's core count follows TOP500 to stay consistent with the measured run; the two sources differ by about 3,500 cores, which likely reflects a later reconfiguration. It ranked 74th on the June 2019 list and 454th on the June 2026 list.

Timeline

2018 First operational source
2019-06 List debut at #74 (June 2019) source
2026-09-30 Decommissioned source

Public list appearances

Pointers only: rank and edition, linking to the canonical entry. We do not reproduce list tables. See sourcing policy.

#74: TOP500, June 2019 →

Site & facility

NSC Data Centre, Linkoping

Location: Linkoping, Sweden
Commissioned: 2018

nsc.liu.se top500.org

Change history

2026-10-02 Marked Tetralith decommissioned
2026-10-01 Added Tetralith (NSC)

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	Omni-Path Architecture
nsc.liu.se	names system and part	Omni-Path Architecture

Checked 2026-10-09 by pnpm verify. Re-run it and the table changes with the web.