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WELCOMEWELCOME

TO ALL OFTO ALL OF

Name A rdhenduMishra

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A multi-core processor is an integrated circuit to whichtwo or more processors have been attached for enhancedperformance, reduced power consumption, and moreefficient simultaneous processing of multiple tasks. A dual

core set-up is somewhat comparable to having multiple,separate processors installed in the same computer, butbecause the two processors are actually plugged into thesame socket, the connection between them is faster.Ideally, a dual core processor is nearly twice as powerfulas a single core processor. In practice, performance gainsare said to be about fifty percent: a dual core processor is

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Meanin

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A multi-core CPU (or chip-level multiprocessor, CMP)

combines two or more independent cores into asingle package composed of a single integratedcircuit (IC), called a die, or more dies packagedtogether.

A multi-core microprocessor implementsmultiprocessing in a single physical package. Multicorearchitecture has a single processor packagethat contains two or more processor "execution

cores," or computational engines, and deliverswith appropriate softwarefully parallel executionof multiple software threads.

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Cores in a multi-core device may share a singlecoherent cache at the highest on-device cache level

(e.g. L2 for the Intel Core 2) or may have separatecaches (e.g. current AMD dual-core processors). Theprocessors also share the same interconnect to therest of the system.

The operating system (OS) perceives each of itsexecution cores as a discrete processor, with all theassociated execution resources. Each "core" independently implements

optimizations such as superscalar execution,pipelining, and multithreading

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A dual-core processor contains two cores and a quadcore

processor contains four cores. Dual-coreprocessors are the first step in the transition to multicorecomputing.Intel is already conducting research on architecturesthat could hold dozens or even hundreds of processors

on a single dieBy enabling energy-efficient performance and moreefficientsimultaneous processing of multiple tasks,multi-core processors promise to improve userexperiences in both home and business environments.

Multi-Core is the future of computing

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Functional unitsSuperscalar is known territory. Diminishing returnsfor adding more functional blocks. Single-threaded

architectural performance is peggedData pathsIncreasing bandwidth between functional units in acore makes a difference. Such as comprehensive

64-bit design.

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PipelineDeeper pipeline buys frequency at expense ofincreased cache miss penalty and lower instructionsper clock. Shallow pipeline gives better instructions

per clock at the expense of frequency scaling. Max.frequency per core requires deeper pipelinesCacheCache size buys performance at expense of die size.

Deep pipeline cache miss penalties are reduced bylarger caches.

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Increased com utin Ca abilitiesHi her Performance

The di ital home & Business

Qualit software develo ment

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Ad ustments to the existin software

Thermal mana ement

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Thank You