Fugaku (Japanese: 富岳) – named after an alternative name for Mount Fuji – is a claimed exascale supercomputer (while only at petascale for mainstream benchmark), at the RIKEN Center for Computational Science in Kobe, Japan. It started development in 2014 as the successor to the K computer, and is officially scheduled to start operating in 2021. Fugaku made its debut in 2020, and became the fastest supercomputer in the world in the June 2020 TOP500 list, as well as becoming the first ARM architecture-based computer to achieve this. In June 2020, it achieved 1.42 exaFLOPS (fp16 with fp64 precision) in HPL-AI benchmark making it the first ever supercomputer that achieved 1 exaFLOPS. As of April 2021, Fugaku is the fastest supercomputer in the world.