the earth simulator system
Post on 06-Jan-2016
33 Views
Preview:
DESCRIPTION
TRANSCRIPT
The Earth Simulator System
Hui Zhu
Instructor Dr. Damian
Introduction
Application to the atmospheric and oceanographic science
Application to the solid earth science
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
Processor Node (PN)
Shared memory parallel vector supercomputer
Every node contains 8 arithmetic processors (AP). a main memory system (MS).
Interconnection Network
A huge 640*640 crossbar switch Divided into a control unit and 128 data s
witch units
Interconnection Network
No supervisor exists in the interconnection network. The control unit and the 128 data switch units operate asynchronously.
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
Interconnection Network
To realize the high-speed parallel processing synchronization
1. Global Barrier Counter (GBC)
2. Global Barrier Flag (GBF)
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 s
tation(CCS)
Performance
The most powerful supercomputer in the world
Achieving 35.86 TFLOPS, 87.5% of peak performance of the system in LINPACK benchmark
Conclusion Vector processor Shared memory High-bandwidth and non-blocking
interconnection crossbar network
Conclusion
UK Met office for operational weather forecasts and the Hadley center for climate research have some collaboration with the Earth simulator.
top related