EuroHPC MeluXina is a large GPU cluster operated by EuroHPC JU, located in Luxembourg, in the public sector. It came online around June 2021. At that moment it ranked number 30 among known clusters.
It is built on 800 NVIDIA A100. That amounts to about 252 H100e of AI compute. The cluster draws roughly 0.69 MW. Its hardware is estimated at $38M.
Epoch AI rates the certainty of this record as confirmed.