1. The Earth Simulator System
Hui Zhu
Instructor Dr. Damian

2. Introduction Application to the atmospheric and oceanographic science
Application to the solid earth science

4. System Overview Highly parallel vector supercomputer system
1. consisting of 640 processor nodes (PN)
2. Interconnection network (IN)
The physical system is composed of
320 PN cabinets, each containing 2 processor nodes
65 IN cabinets contain the interconnection network

6. Processor Node (PN) Shared memory parallel vector supercomputer
Every node contains
8 arithmetic processors (AP).
a main memory system (MS).

7. Interconnection Network
A huge 640*640 crossbar switch
Divided into a control unit and 128 data switch units

8. Interconnection Network
No supervisor exists in the interconnection network. The control unit and the 128 data switch units operate asynchronously.

9. Interconnection Network
Error Occurrence Rate Problem
83,200 pairs of serial transmissions are used for realizing the aggregate switching capacity, 130 pairs are used for connecting processor node and interconnection network
ECC codes are added to the transfer data

10. Interconnection Network
To realize the high-speed parallel processing synchronization
1. Global Barrier Counter (GBC)
2. Global Barrier Flag (GBF)

11. OS Managment Super Cluster System 640 PNs grouped into 40 clusters
A supervisor called Super-Cluster control station(SCCS) manages all clusters
Every cluster has it’s own cluster control station(CCS)

12. Performance The most powerful supercomputer in the world
Achieving TFLOPS, 87.5% of peak performance of the system in LINPACK benchmark

13. Conclusion Vector processor Shared memory
High-bandwidth and non-blocking interconnection crossbar network

14. Conclusion
UK Met office for operational weather forecasts and the Hadley center for climate research have some collaboration with the Earth simulator.