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HRT’s Lefdal Mine data center sits inside a Norwegian mountain and blends fjord…

Brief

HRT’s Lefdal Mine data center sits inside a Norwegian mountain and blends fjord seawater cooling with dense GPU clusters. HRT reports DLC racks above 125 kW per cabinet, high-speed interconnects, and bespoke storage for AI workloads; @iaindunning additionally claims the site houses well over 4,000 GPUs and “helps grow salmon.”

Source evidence

Since we're talking about trading firm data centers this weekend: it helps grow salmon, it's an old mine, and has way more than 4000 GPUs, it's HRT's Norway data center!

Hudson River Trading (@WeAreHRT)

Deep inside a Norwegian mountain lies one of the most unusual HPC environments in the world: @LefdalMineDC, where cold seawater siphoned from a nearby fjord cools dense GPU clusters designed for large-scale AI workloads.

HRT’s deployment at Lefdal includes DLC racks operating above 125 kW per cabinet, integrated with high-speed interconnects and bespoke storage systems designed to power our cutting-edge quantitative research.

In our latest video, we take a look inside the mine at our next-gen HPC and networking infrastructure: piped.video/kWPl7Awtq5U

Video

— https://nitter.net/WeAreHRT/status/2032485495888814243#m