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Fugaku's achievements are not only the hardware, but also the whole system, including the system software and applications for Arm for HPC realized on top of it, and the science and solutions that make the digital twin[1] possible. The R-CCS aims to create 'Cloud APIs on Fugaku' and 'virtual Fugaku' so that its results can be widely established and utilized in society. The former adds functions and interfaces to Fugaku as a cloud infrastructure, making it easier to realize cloud application services on Fugaku and to use them in conjunction with other clouds, and is already being undertaken on a trial basis. The latter aims to create an environment in which the results of the Fugaku software and applications can also be used directly on the commercial cloud - a virtual Fugaku, so to speak.

Fugaku service logo

To realize Virtual Fugaku, R-CCS signed an MOU (Memorandum of Understanding) with Amazon Web Services (AWS), which develops AWS Graviton3 CPU which is compatible with Fukagu’s Arm-architecture-based A64FX CPU, and will collaborate in joint research to build an environment to reproduce the functionality of Fugaku in the cloud through application[2] performance portability between Fugaku and AWS infrastructure.

If Virtual Fugaku becomes a reality, it will further promote the widespread use of high-performance software execution and development environments in large-scale machine infrastructures such as supercomputers and cloud computing for Arm CPUs, which are already widely used in the consumer market. This is expected to make it easier for Fugaku users and potential users to enjoy the results of Fugaku technology, and enable companies to immediately reflect the results of cutting-edge research and development carried out at Fugaku in their product development, leading to further expansion of users, including in industry, the accumulation of examples of use and the spread of technology. The aim is for this initiative to progress further and lead to the realization of Virtual Fugaku, thereby establishing the achievements of Fugaku as an important social infrastructure for our daily lives, and through this, the realization of a Society 5.0[3].


  • [1] Digital twin: The reproduction of a real-world environment simulated on a large scale and with high precision within a virtual space by means of the analysis of vast amounts of data collected from the physical world in the cyberworld.
  • [2] Application: The first phase of the project targets software developed at R-CCS, such as GENESIS, a molecular dynamics software used in drug discovery, etc., and CUBE, which is mainly used for advanced fluid calculations for industrial applications such as automobiles and simulation of droplet infection of new coronaviruses using Fugaku, but We plan to gradually expand the scope of this project. At present, the operation of GENESIS has been confirmed on AWS Graviton3 CPU.
  • [3] Society 5.0: Society 5.0 was proposed in the 5th Science and Technology Basic Plan as a future Society that Japan should aspire to. It follows the hunting Society (Society 1.0), agricultural Society (Society 2.0), industrial Society (Society 3.0), and information Society (Society 4.0). Japan seeks to make Society 5.0 a reality as a new society that incorporates new technologies such as IoT, robotics, AI, and big data in all industries and social activities and achieves both economic development and solutions to social problems in parallel.

(Feb 6, 2023)