[M-GI35] Computational sciences on the universe, galaxies, stars, planets, and their environments

[MGI35-P06] Smoothed Particle Hydrodynamics of Planetary Collisions on FUGAKU

*Natsuki Hosono^1,2,3, Eiichiro Kokubo⁴ (1.Department of Planetology, Graduate School of Science, Kobe University, 2.RIKEN Center for Computational Science, 3.Center for Mathematical Science and Advanced Technology, JAMSTEC, 4.Division of Science, Center for Computational Astrophysics, National Astronomical Observatory of Japan)

Keywords:Planetary science, HPC

The Moon-forming Giant Impact (GI) remains as an important problem in
planetary science.
To date, a lot of numerical simulations of the GI have been carried
out by the Smoothed Particle Hydrodynamics (SPH) method, which is a
particle-based numerical hydrodynamical method.
However, the dependence on the number of particles has not been well
known yet.
Though previous works employed up to $10^9$ particles, the convergence
of the results is not achieved yet.
Hence, we need to carry out ultra-high resolution simulations.
To this end, we use Japanese Supercomputer FUGAKU.
To achieve high efficiency on FUGAKU, we develop an SPH code that uses
the SVE intrinsic functions.
For the parallelization, we use the Framework for Developing Particle
Simulator.
In this poster, we show a performance of the code.