We are conducting research on the multi-grid method with the aim of improving scalable performance and expanding its application range. The multi-grid method is used not only in conventional linear solvers but also for parallelizing time integration. Our research topics are divided into three areas: performance model, multi-coloring technique, and fundamental algorithm.

In this presentation, we will mainly introduce the research conducted in FY2023 and explain how we will continue it in 2024.