GENCI Adastra is a large GPU cluster operated by GENCI, located in France, in the public sector. It came online around June 2022. At that moment it ranked number 54 among known clusters.
It is built on 1,352 AMD Radeon Instinct MI250X. That amounts to about 262 H100e of AI compute. The cluster draws roughly 1.61 MW. Its hardware is estimated at $35M.
Epoch AI rates the certainty of this record as confirmed.