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Home | Seminars and Symposia | Past seminars/symposia: Monday, July 29, 2002

DTC Seminar Series

Magneto Hydrodynamic Simulations of the Geofem Project using the Earth Simulator Computer

by

Hiroaki Matsui
Research Organization for Information and Science Technology (RIST)
GeoFem Team
Menguro-ku, Tokyo, 153-0061
JAPAN

Monday, July 29, 2002
3:00 pm

402 Walter Library

View/download a copy of Dr. Matsui's presentation used in this lecture. PDF (24.5 MB) The Earth Simulator (ES) is one of the most powerful computers in the world today. ES contains 640 nodes of SMP type, each node with 8 vector pipe-lined processors. A theoretical speed of around 40 Teraflops can be attained on all nodes with a shared-distributed memory system holding 10 Terabytes. Dr. Matsui's group has developed a finite-element simulation code for magneto-hydrodynamic (MHD) dynamo in a rapidly rotating spherical shell by means of the GeoFEM platform, which provides for a seamless simulation platform with the finite-element (FEM) method. For performing large-scale simulations on ES, GeoFEM contains subsystems for both simulation and visualization and software utilities including a powerful mesh-refinement tool, which increases the advantage over the traditional spectral method. Dr. Matsui will introduce the audience to the computational architecture of ES and the software designs of GeoFEM. Finally, he will present the first numerical simulations of the geodynamo processes in the earth's core by means of the finite-element method on the GeoFEM platform.

 

Dr. Hiroaki Matsui is, at present, a researcher of the GeoFEM team at the Japanese Research Organization for Information and Science Technology (RIST) situated in Menguro-ku, Tokyo. He received his doctoral degree in computational geophysical fluid dynamics from Tohoku University in Sendai, Japan in 1999. Since that time he has been with RIST. Dr. Matsui is interested in large-scale numerical simulations on parallel platforms such as the Earth Simulator, and visualization of complex dynamics. He is a specialist in magneto-hydrodynamics and finite-elements.