The Case for a Single-Chip Multiprocessor单片机处理的实利

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1、TheCaseforaSingle-ChipMultiprocessorKunleOlukotun,BasemA.Nayfeh,LanceHammond,KenWilson,andKunyungChangComputerSystemsLaboratoryStanfordUniversityStanford,CA94305-4070http://www-hydra.stanford.eduAbstractTounderstandtheperformancetrade-offsbetweenwide-issuepro-cessorsandmultiproc

2、essorsinamorequantitativeway,wecom-AdvancesinICprocessingallowformoremicroprocessordesignparetheperformanceofasix-issuedynamicallyscheduledoptions.Theincreasinggatedensityandcostofwiresinadvancedsuperscalarprocessorwitha4´two-issuemultiprocessor.Ourintegratedcircuittechnologiesr

3、equirethatwelookfornewwaystocomparisonhasanumberofuniquefeatures.First,weaccuratelyusetheircapabilitieseffectively.Thispapershowsthatinadvancedaccountforandjustifythelatencies,especiallythecachehittime,technologiesitispossibletoimplementasingle-chipmultiproces-associatedwiththet

4、womicroarchitectures.Second,wedevelopsorinthesameareaasawideissuesuperscalarprocessor.Wefindfloor-plansandcarefullyallocateresourcestothetwomicroarchi-thatforapplicationswithlittleparallelismtheperformanceofthetecturessothattheyrequireanequalamountofdiearea.Third,wetwomicroarchit

5、ecturesiscomparable.Forapplicationswithlargeevaluatethesearchitectureswithavarietyofinteger,floatingpointamountsofparallelismatboththefineandcoarsegrainedlevels,andmultiprogrammingapplicationsrunninginarealisticoperatingthemultiprocessormicroarchitectureoutperformsthesuperscalars

6、ystemenvironment.architecturebyasignificantmargin.Single-chipmultiprocessorarchitectureshavetheadvantageinthattheyofferlocalizedimple-Theresultsshowthatonapplicationsthatcannotbeparallelized,mentationofahigh-clockrateprocessorforinherentlysequentialthesuperscalarmicroarchitectur

7、eperforms30%betterthanoneapplicationsandlowlatencyinterprocessorcommunicationforpar-processorofthemultiprocessorarchitecture.Onapplicationswithallelapplications.finegrainedthread-levelparallelismthemultiprocessormicroarchi-tecturecanexploitthisparallelismsothatthesuperscalarmicro

8、ar-1Introductionchitectureisatmost10%better.Ona