1. Multi Core Processor
Submitted by:
Lizolen Pradhan

2. Outline Overview Moore’s law Design How a multi processor works
Performance
Advantages and Disadvantages

3. Some Terminology
Core
Die
Thread
Clock speed

4. Multi-core Processors - Overview
What are multi-core processors?
Integrated circuit(IC) chips containing more than one identical physical processor(core) in the same IC package. OS perceives each core as a discrete processor
Each core has its own complete set of resources, and may share the on-die cache layer

5. Moore’s law

6. Design Single core architecture

7. Drawbacks of unicore processor
Difficult to make single-core
Clock frequencies even higher
Deeply pipelined circuits
Heat problems
Speed of light problems
Difficult design and verification
Large design
Server farms need expensive
air-conditioning
Many new applications are multithreaded
General trend in computer architecture (shift
towards more parallelism

8. Multi-core architecture

9. How multi-core processor Work?

10. Multi-core & Multi-threading

11. Contd…

12. Contd…

13. Advantages Thread level parallelism Great energy efficient Performance
Lower cost
Faster
Better heat dissipation
Ease of use

14. Disadvantages Adjustment to existing software required
Memory bandwidth limit the real performance avdvantage

15. What application benefits from multi-core?
Database servers
Web servers
Compilers
Multimedia applications
Scientific applications CAD/CAM
In general application s with
Thread-level parallelism

16. Conclusion Multicore chips an important new trend in
computer architecture
Several new multi-core
chips in design phases
Parallel programming
techniques likely to gain
importance

17. Thank you