2. The project of application for network computing in seismology --The prototype of SeisGrid Chen HuiZhong, Ze Ren Zhi Ma, Hu Bin hzchen@seis.ac.cn Institute of Earthquake Science, BeiJing, China July,2006

3. The project of application for network computing in seismology is under the Program of infrastructure platform for science and technology, which is authorized by Ministry of Science and Technology China.

4. The Program is divided into 5 parts, one of 5 is “Environment of network for science and technology “. This project is under “Environment of network for science and technology “. The project is named The SeisGrid also.

5. Cited

6. SeisGrid SeisGrid is a platform to aggregate computing resources across distributed locations and administrative boundaries of institutes for coordinated computations for various applications

7. Why CEA SeisGrid? Aggregating computing resources across geometrically distributed locations and administrative boundaries Increasing resource utilization and sharing Enabling the computing environment for the problems in earthquake prediction ; Seismological data and Resource sharing

8. CEA SeisGrid Main Task Build earthquake scientific computing grid Develop earthquake simulation module for grid software environment Promote earthquake simulation module in Grid Community Grid applications

9. Topology of prototype for SeisGrid

10. Software Infrastructure OS: GNU/Linux Distribution: RedHat, Fedora Compiler: GNU GCC C Library: glibc 2.3 Grid Middleware: Globus toolkit MPI: MPICH-G2

11. High Performance Cluster Dawning 4000A －－－ 9 nodes Total number of processors: 18 Total number of nodes: 9 CPU: AMD OPERTORN 240 OS: Linux Installation: 2003

12. Benefits of Clustering Easy to build High Performance (HP) High Availability (HA) scalable Cheap

13. Current Status Grid Portal Web-based job submission Real time monitoring Broker allocates computing resource Inter-cluster parallel computation

14. Parallel Earthquake Modules 1. Load/Unload Response Ratio (LURR) (finished) 2.Numerical simulation of crustal stress on China mainland (finished) 3.InSAR(Interferometric Synthetic Aperture Radar) forward modeling (finished) 4.Other 4 modules on Earthquake Location and Virtual Observation ( ongoing)

15. Work Flow

16. Project Webpage http://www.SeisGrid.net/

17. Account Administration Node Administration Job Administration

18. Load/Unload Response Ratio

19. InSAR Forward Modeling

20. Numerical simulation of crustal stress on China mainland

21. SeisGrid Supporting Platform

22. The prototype of SeisGrid is an experimental system of CEA In the near future it is planning to develop more application software and install more powerful computer Open to scientists for earthquakes science research.