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1、OntheDesignofaPhotonicNetwork-on-ChipAssafShachamKerenBergmanLucaP.CarloniColumbiaUniversityColumbiaUniversityColumbiaUniversityDept.ofElectricalEngineeringDept.ofElectricalEngineeringDept.ofComputerScience500W120thSt.,500W120thSt.,1214AmsterdamAve.,NewYork,NY
2、10027NewYork,NY10027NewYork,NY10027assaf@ee.columbia.edubergman@ee.columbia.eduluca@cs.columbia.eduAbstracttrendisunmistakableaspracticallyeverycommercialman-ufacturerofhigh-performanceprocessorsiscurrentlyintro-Recentremarkableadvancesinnanoscalesilicon-ducin
3、gproductsbasedonmulti-corearchitectures:AMDphotonicintegratedcircuitryspecificallycompatiblewithOpteron,IntelMontecito,SunNiagara,andIBMCellandCMOSfabricationhavegeneratednewopportunitiesforPower5.Thesesystemsaimtooptimizeperformanceperleveragingtheuniquecapabi
4、litiesofopticaltechnologieswattbyoperatingmultipleparallelprocessorsatlowerclockintheon-chipcommunicationsinfrastructure.Basedonfrequencies.thesenano-photonicbuildingblocks,weconsiderapho-Clearly,withinthenextfewyears,performancegainstonicnetwork-on-chiparchit
5、ecturedesignedtoexploitthewillcomefromincreasesinthenumberofprocessorcoresenormoustransmissionbandwidths,lowlatencies,andlowperchip[14,22],leadingtotheemergenceofakeybottle-powerdissipationenabledbydataexchangeintheopti-neck:theglobalintrachipcommunicationsinf
6、rastructure.caldomain.ThenovelarchitecturalapproachemploysaPerhapsthemostdauntingchallengetofuturesystemsisbroadbandphotoniccircuit-switchednetworkdriveninatorealizetheenormousbandwidthscapacitiesandstringentdistributedfashionbyanelectronicoverlaycontrolnetwor
7、klatencyrequirementswheninterconnectingalargenumberwhichisalsousedforindependentexchangeofshortmes-ofprocessingcoresinapowerefficientfashion.sages.WeaddressthecriticalnetworkdesignissuesforLowlatency,highdata-rate,on-chipinterconnectionnet-insertioninchipmultip
8、rocessors(CMP)applications,in-workshavethereforebecomeakeytorelievingoneofcludingtopology,routingalgorithms,path-setupandtear-themainbottleneckstoCMPsystemperformance.Sig-downproce
