EPCC Cerebras CS-2 Cluster

Also known as EIDF Cerebras CS-2 Wafer-Scale Cluster

Operated by EPCC .

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: -
Rpeak: -
Rmax ÷ Rpeak: -
Cores: -
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	Cerebras CS-2 (WSE-2) Accelerators Cerebras (wafer-scale) two Cerebras CS-2 units run as a Wafer-Scale Cluster with MemoryX	Cerebras	2 reported	Reported	epcc.ed.ac.uk

The read

EPCC's Cerebras service in the Edinburgh International Data Facility: a first CS-1 bought in 2021 (the first in Europe) was replaced by a CS-2 in September 2022 and a second CS-2 was added in December 2023, when the pair was reconfigured as a Wafer-Scale Cluster with a MemoryX weight-streaming system. EPCC's articles give the two units, the 850,000-core WSE-2 and the Bayes Centre address, but no data-hall name, so the system is left unlocated. Both sources are EPCC's own, so the tier is reported. EPCC also lists a Graphcore Bow Pod64 in the same facility, which is not recorded because no fetched page confirms an IPU count or an operating date.

Timeline

2022-09 First operational source

Change history

2026-10-02 Added EPCC's Cerebras CS-2 Wafer-Scale 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
epcc.ed.ac.uk	names system, part and count	Cerebras CS-2 (WSE-2) · counts: 2
epcc.ed.ac.uk	names system, part and count	Cerebras CS-2 (WSE-2) · counts: 2

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