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pipelined implementation ofvirtual interface architectureon myrinet

pipelined implementation ofvirtual interface architectureon myrinet

ID：1710539

大小：147.50 KB

页数：16页

时间：2017-11-13

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1、PipelinedImplementationof VirtualInterfaceArchitecture onMyrinetMoon-SangLee,Jung-LokYu,andSeung-RyoulMaengEECS,KoreaAdvancedInstituteofScienceandTechnologyContentsIntroductionArchitecturalModelMotivationDesign&ImplementationPerformanceEvaluationConclusion&FutureWorkIntroduction(1)clustercompu

2、terhighperformancemicroprocessorhighspeednetworkmassivevolumeandlowcostuser-levelcommunication(ULC)removekernelinterventionfromdatatransmissioncopyoverheadbetweenkernelbufferanduserbuffermultipleprotocollayerinadequateoperation(CRC,backupcopy)contextswitchwithkernelinterventionVirtualInterface

3、Architecture(VIA)industrystandardforULCVIAspecification1.0(bycompaq,intelandmicrosoft)Introduction(2)VIarchitecturalmodelApplicationOSCommunicationInterfaceSocket,MPI,Cluster,othersVIUserAgentVIKernelAgentNetworkInterfaceControllerUserModeKernelModeVIVIVICQSend/ReceiveRDMARead/WriteOpen/Connec

4、tRegisterMemoryVIConsumerVIProviderArchitecturalModel(1)overallarchitectureLANaiCPULANaiCPUsenddoorbellreceivedoorbelluseraddressspacereceivedescriptorsenddescriptordatapacketsinNICmemoryMyrinetNICMyrinetNIC1245973sendbufferreceivebuffer8610useraddressspacehosthostArchitecturalModel(2)hardware

5、resourcesonMyrinetNIChostDMA:2channelscontrollablebyMyrinetNICLANai:RISCprocessorlinkDMA:2channelslocalmemory:SRAMwiththesamespeedasLANaifastlocalmemoryhostDMALANaiprocessorlinkDMAPCIbusMyrinetlinkLBUSMotivation(1)currentlyPCIbusisthemainbottlenecktoULC66MHz64bitPCIbusisgoingtobeadoptedhigh-le

6、velsemanticsofsend/receivetransactionwastingLANaicyclesunderutilizingDMAchannelsTxDeschostDMAwaitTxDatahostDMATxDatalinkDMAwaitwaitstatushostDMAwaitringsenddoorbellsendcompletionsendpipelineRxDatalinkDMAwaitRxDeschostDMAwaitRxDatahostDMAstatushostDMAwaitwaitringrecvdoorbellrecvcompletionreceiv

7、epipelineMotivation(2)splittimemeasuredusingK-VIAtransferringalargemessagemightstallLANaiforalongtimeDesign&Implementation(1)practicaluseofhardwaredoorbellafewarithmeticoperationtofindamatchingVIPCIaddressspace…SRAMspaceuseri’svirtualad

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