dorsal/arxiv
View SchemaGeodynamo and mantle convection simulations on the Earth Simulator using the Yin-Yang grid
| Authors | Akira Kageyama, Masaki Yoshida |
|---|---|
| Categories | |
| ArXiv ID | physics/0506192 |
| URL | https://arxiv.org/abs/physics/0506192 |
| DOI | 10.1088/1742-6596/16/1/045 |
| Journal | Journal of Physics: Conference Series, Vol.16, 325-338 (2005) |
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 $10^7$ including strongly temperature-dependent viscosity with spatial contrast up to $10^6$.
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"abstract": "We have developed finite difference codes based on the Yin-Yang grid for the\ngeodynamo simulation and the mantle convection simulation. The Yin-Yang grid is\na kind of spherical overset grid that is composed of two identical component\ngrids. The intrinsic simplicity of the mesh configuration of the Yin-Yang grid\nenables us to develop highly optimized simulation codes on massively parallel\nsupercomputers. The Yin-Yang geodynamo code has achieved 15.2 Tflops with 4096\nprocessors on the Earth Simulator. This represents 46% of the theoretical peak\nperformance. The Yin-Yang mantle code has enabled us to carry out mantle\nconvection simulations in realistic regimes with a Rayleigh number of $10^7$\nincluding strongly temperature-dependent viscosity with spatial contrast up to\n$10^6$.",
"arxiv_id": "physics/0506192",
"authors": [
"Akira Kageyama",
"Masaki Yoshida"
],
"categories": [
"physics.geo-ph"
],
"doi": "10.1088/1742-6596/16/1/045",
"journal_ref": "Journal of Physics: Conference Series, Vol.16, 325-338 (2005)",
"title": "Geodynamo and mantle convection simulations on the Earth Simulator using the Yin-Yang grid",
"url": "https://arxiv.org/abs/physics/0506192"
},
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