Japanese Research Institute 2 Supercomputer 1 is a large GPU cluster, located in Japan. It came online around June 2022. At that moment it ranked number 72 among known clusters.
It is built on 624 NVIDIA A100. That amounts to about 197 H100e of AI compute. The cluster draws roughly 0.53 MW. Its hardware is estimated at $14M.
Epoch AI rates the certainty of this record as confirmed.