Parallel Finite Element Solid Earth Simulator : GeoFEM

The Ministry of Education, Culture, Sports, Science and Technology, Japan has begun an Earth Simulator project from the fiscal year of 1997 for predicting various Earth phenomena through the simulation of virtual Earth placed in a supercomputer, called 'Earth Simulator (40 Tflops/peak)'. GeoFEM challenges for long-term prediction of the activities of the plate and mantle near the Japanese islands through the modeling and calculation of the solid earth analysis, including the dynamics and heat transfer inside the Earth.GeoFEM is composed of 'analysis modules' for structural / electromagnetic thermal fluid / wave propagation simulations and 'platform' for parallel I/O / equation solvers / visualization functions. System is designed to be pluggable such that each analysis module is replaceable and that communications among PEs are done implicitly in platform. Platform includes a 'coupler', supporting communications among analysis modules for multi-disciplinary computations. 'Utilities' i.e. mesh partitioners and pre/post viewer are also supplied. ICCG solver tuned for SMP parallel / vector hybrid system is expected to attain over 10 Tflops on the Earth Simulator. In collaboration with solid earth researchers, various modules are being developed in such fields as earthquake cycle, faulting and propagation, mantle/core dynamics, seismic wave propagation, GPS data assimilation etc. GeoFEM/Tiger, a multi-purpose engineering version, can be downloaded from its web site (http://geofem.tokyo.rist.or.jp). REPORT DATE May 11th, 2002. TOTAL NO. OF PAGES 10 ANY OTHER IDENTIFYING INFORMATION OF THIS REPORT Submitted to WCCM V Fifth World Congress on Computational Mechanics July 7-12, 2002, Vienna, Austria Eds.: H.A. Mang, F.G. Rammerstorfer, J. Eberhardsteiner Research Organization for Information Science & Technology (RIST) 2-2-54, Nakameguro, Meguro-ku Tokyo, 153-0061, Japan TEL: +81-3-3712-5321 FAX: +81-3-3712-5552 http://geofem.tokyo.rist.or.jp/ Copyright©2002 Research Organization for Information Science & Technology (RIST) Parallel Finite Element Solid Earth Simulator : GeoFEM Hiroshi Okuda* and Genki Yagawa Department of Quantum Engineering and Systems Science, University of Tokyo 7-3-1 Hongo, Bunkyo, Tokyo 113-8656, Japan e-mail: {okuda, yagawa}@q.t.u-tokyo.ac.jp Kengo Nakajima and Hisashi Nakamura Research Organization for Information Science & Technology (RIST) 2-2-54 Naka-Meguro, Meguro, Tokyo 153-0061, Japan e-mail: {nakajima, nakamura}@tokyo.rist.or.jp