Sindhu priya.sECE-’B’, I-YEAR,pmu.

MULTICORE PROCESSOR

TECHNOLOGY

Introduction History What do you mean by multi core? Multi core architecture Comparison of Different Architectures Performance analysis Advantages & Disadvantages Application Future aspect References of work

CONTENTS

• Multi-core processors represent a major evolution in computing technology.

• They are several mostly independent cores which work together in parallel

•performance and productivity benefits beyond the capabilities of today’s single-core processors.

Introduction

•A multi-core microprocessor is one which combines two or more independent processors into a single package, often a single integrated circuit. A Multi-core computing• A dual-core device contains only two independent microprocessors.

What do you mean by Multi core?

If multi means two or more, what types are there?

A dual-core processor contains two cores.

A quad-core processor contains four cores.

•The first commercial dual core processor was IBM's Power 4 processor for it's RISC servers in 2001.

•The first dual core processor for home use was Intel's Pentium Processor Extreme Edition 840, released in early April 2005.

•Less than two weeks later AMD brought their Opteron 800 Series and Athlon 64 X2 processors to market.

History

Multi core architecture

8

Comparison of Different Architectures

CPU State

CacheExecution

unit

Single Core Architecture

CPU State

CacheExecution

unit

CPU State

CacheExecution

unit

Comparison of Different Architectures

Multiprocessor

10

Comparison of Different Architectures

CPUa State

CacheExecution

unit

Multi-Core Architecture

CPU State

CacheExecution

unit

11

Comparison of Different Architectures

CPU State

Executionunit

Multi-Core Architecture with Shared Cache

CPU State

Cache

Executionunit

Performance Analysis

•Multi-tasking productivity

• it will work faster for certain programs

•PC security

•Cool and quiet

•The signals between different CPUs travel shorter distances

Advantages

•They do not work at twice the speed as a normal processor. They get only 60-80% more speed.

•The speed that the computer works at depends on what the user is doing with it.

•They cost more than single core processors.

•They are more difficult to manage thermally than lower-density single-core processors.

Disadvantages

Applications

• Video editing • Encoding .• 3D gaming. • Powerful graphics solution • Optimized productivity titles, such as AVG's virus-scanning software.

Next-generation software applications willrequire the performance capacity provided bymulti-core processors. Software destined tobreak barriers in the user experience, like as • Voice recognition • Artificial intelligence (AI)

That will be only possible by multi-core processors

Future aspect

References

• R. Merritt, “CPU Designers Debate Multi-core Future”, EETimes Online, February 2008, http://www.eetimes.com/showArticle.jhtml?articleID=206105179

• R. Merritt, “Multicore Puts Screws to Parallel-Programming Models”, EETimes Online, February 2008, http://www.eetimes.com/news/latest/showArticle.jtml?articleID=206504466

• R. Merritt, “X86 Cuts to the Cores”, EETimes Online, September 2007, http://www.eetimes.com/showArticle.jtml?articleID=202100022

• R. Merritt, “Multicore Goals Mesh at Hot Chips”, EETimes Online, August 2007, http://www.eetimes.com/showArticle.jtml?articleID=201800925

• P. Frost Gorder, “Multicore Processors for Science and Engineering”, IEEE CS, March/April 2007

• D. Geer, “Chip Makers Turn to Multicore Processors”, Computer, IEEE Computer Society, May 2005 [5] L. Peng et al, “Memory Performance and

It has been taken from various sources

THANK YOU