Multi Core Processor Submitted by: Lizolen Pradhan 0921209041.

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Presentation transcript:

Multi Core Processor Submitted by: Lizolen Pradhan 0921209041

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

Some Terminology Core Die Thread Clock speed

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

Moore’s law

Design Single core architecture

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

Multi-core architecture

How multi-core processor Work?

Multi-core & Multi-threading

Contd…

Contd…

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

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

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

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

Thank you