Uchuu is a two trillion N-body simulation that uses Planck2015 cosmology. It was produced with the GreeM N-body code (Ishiyama et al. 2009, Ishiyama et al. 2012) at the ATERUI II supercomputer in Japan. Another two boxes were run with the same resolution but different volumes (mini-Uchuu, micro-Uchuu); and a third one with high resolution (Shin-Uchuu). More details are given in the Uchuu DR1 paper Ishiyama et al. 2020. "Uchuu" is a Japanese word meaning "Universe".
Uchuu simulations were perfomed at the ATERUI II supercomputer in Japan, and made use of the skun6@IAA facility in Spain. DR1 products are publicly available in Skies & Universes via the skun@IAA server, with support of RedIRIS, and the Uchuu-Cloud@CESGA in Spain.