Geodynamo and mantle convection simulations on the Earth Simulator using the Yin-Yang grid
Abstract
We have developed finite difference codes based on the Yin-Yang grid for the geodynamo simulation and the mantle convection simulation. The Yin-Yang grid is a kind of spherical overset grid that is composed of two identical component grids. The intrinsic simplicity of the mesh configuration of the Yin-Yang grid enables us to develop highly optimized simulation codes on massively parallel supercomputers. The Yin-Yang geodynamo code has achieved 15.2 Tflops with 4096 processors on the Earth Simulator. This represents 46% of the theoretical peak performance. The Yin-Yang mantle code has enabled us to carry out mantle convection simulations in realistic regimes with a Rayleigh number of including strongly temperature-dependent viscosity with spatial contrast up to .
Keywords
Cite
@article{arxiv.physics/0506192,
title = {Geodynamo and mantle convection simulations on the Earth Simulator using the Yin-Yang grid},
author = {Akira Kageyama and Masaki Yoshida},
journal= {arXiv preprint arXiv:physics/0506192},
year = {2007}
}
Comments
Plenary talk at SciDAC 2005