The Earth Simulator (ES4) is a multi-architecture supercomputer based on AMD EPYC CPUs and combined with accelerators (NEC's SX-Aurora TSUBASA and NVIDIA's GPU A100).
ES4 will lead both further development of conventional research and implementation of new research projects such as AI research.





 Above clusters that compose Earth Simulator (ES4) are connected to the same HDR InfiniBand fabric and share the same file system.
Besides, every node has the same kind of AMD EPYC CPU and Linux is installed on it.
Thus, this architecture allows users to run the jobs that uses all nodes or some nodes over the multiple clusters using the batch processing system which can manage all nodes.





 The digital twin means the mechanism that enables monitoring and simulation by constructing a twin paired with the real world in a digital space.
Digital twins of the ocean are used to understand what is happening in the real space of the ocean, including natural disasters, and to predict what will happen.
Research Institute for Value-Added-Information Generation (VAiG) has been engaged the research and development of the ocean digital twin.
One of its objectives is to predict extreme weather and ocean phenomena such as super typhoons and storm surges.
We also envision the digital twin to investigate large earthquakes that occur in the ocean, using a seafloor observation network.

 The supercomputer "Earth Simulator" in JAMSTEC Yokohama institute is used for earth science researches, and other science studies such as nanotechnology, fluid dynamics, structural mechanics, AI, and many other fields.
  
 In the Earth Simulator (ES4), we have introduced "the JAMSTEC Strategic Projects" as one of use categories.
The category aims both adding computational resources to excellent researches at any time and the promotion of challenging researches.
It consists of the following three projects.