Lawrence Livermore NL Lassen Phase 2 is a large GPU cluster operated by US Department of Energy, located in the United States, in the public sector. It came online around August 2020. At that moment it ranked number 15 among known clusters.
It is built on 3,168 NVIDIA V100, alongside Cerebras CS-1. That amounts to about 200 H100e of AI compute. The cluster draws roughly 2.08 MW. Its hardware is estimated at $63M.
Epoch AI rates the certainty of this record as confirmed.