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1、DistributedNetworkComputingoverLocalATMNetworksMengjouLin,JenweiHsieh,andDavidH.C.Du’,ComputerScienceDepartment,UniversityofMinnesotaJosephP.Thomas’,MinnesotaSupercomputerCenterInc.,Minneapolis,MinnesotaJamesA.MacDonald’,ArmyHighPerformanceComputingResearchCenter,UniversityofM
2、innesotaAbstract1IntroductionCommunicationbetweenprocessorshaslongbeenDistributednetworkcomputingoffersgreatpoten-thebottleneckofdistributednetworkcomputing.How-tialforincreasingtheamountofcomputingpowerandever,recentprogressinswitch-basedhigh-speedLocalcommunicationresourcesa
3、vailabletolarge-scaleap-AreaNetworks(LANs)maybechangingthissitua-plications.Thedistributedenvironmentinwhichwetion.AsynchronousTransferMode(ATM)isoneofareinterestedisaclusterofworkstationsintercon-themostwidely-acceptedandemerginghigh-speednet-nectedbyalocalareacommunicationne
4、twork.Theworkstandardswhichcanpotentiallysatisfythecom-combinedcomputationalpowerofaclusterofworksta-municationneedsofdistributednetworkcomputing.Intions,connectedtoahighspeedLAN,canbeappliedthispaper,weinvestigatedistributednetworkcomput-tosolveavarietyofscientificandengineer
5、ingprob-ingoverlocalATMnetworks.Wefirststudytheper-lems.Itisverylikelythatthecombinedpowerofanformancecharacteristicsinvolvingend-to-endcommu-integratedheterogeneousnetworkofworkstationsmaynicationinanenvironmentthatincludesseveraltypesexceedthatofastand-alonehigh-performances
6、uper-ofworkstationsinterconnectedviaaForeSystems’computer.ASX-100ATMSwitch.Wethencomparethecom-Sincetheearly1970s,computershavebeenin-municationperformanceoffourdifferentApplicationterconnectedbynetworkssuchasEthernet,TokenProgrammingInterfaces(APIs).ThefourAPIswereRing,etc.Th
7、ecommunicationbandwidthofsuchForeSystemsATMAPI,BSDsocketprogrammingin-networksislimitedtothetensofmegabitspersec-terface,Sun’sRemoteProcedureCall(RPC),andtheond(Mbits/sec)andthebandwidthissharedbyallParallelVirtualMachine(PVM)messagepassingli-ofthecomputers.Thecommunicationres
8、ourcesre-brary.EachAPTrepresentsdistributedprogrammingquiredb