Prototype of Fugaku Supercomputer is Worlds Greenest supercomputer

Fujitsu and RIKEN today announced that a prototype of the supercomputer Fugaku being jointly developed by the two parties took No.1 in the Green500, a global ranking based on the energy efficiency of supercomputers. The Green500 ranks the world’s top500 fastest computing supercomputers by power consumption and efficiency among the TOP500 supercomputers. The system that topped the Green500 was manufactured by Fujitsu as a prototype of Fugaku. Fugaku is a system equipped only with a general-purpose CPU, which can process various applications without using accelerators such as GPUs.

Prototype of Fugaku Supercomputer is equipped with 768 A64FX CPUs that support the Arm SVE (Scalable Vector Extension) instructions for the first time in the world. This performance measurement demonstrated that Fugaku technologies have the world’s highest energy efficiency, achieving 1.9995 PFLOPS (petaflops) in calculation speed for simultaneous linear equations (LINPACK3) against 2.3593 PFLOPS in a peak performance, and 16.876 GFLOPS/W (gigaflops per watt) in a performance per 1 watt of power consumption.