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1、1AdaptiveGridServiceFlowManagement:FrameworkandModelYuLong,HermanLam,andStanleyY.W.SuDatabaseSystemsR&DCenterUniversityofFloridaGainesville,FL32611{ylong,hlam,su}@cise.ufl.eduAbstractdirectedacyclicgraphisusedtorepresentasetofprogramsGridcomputingprov
2、idesthebasicsoftwareinfrastructureforwithdependentrelationship.Programsarerepresentedbyintegratinggeographicallydistributedresourcesandservicesthroughnodesinthegraphwhiledependencyisidentifiedbyedges.standardizedGridservices.Oneofthekeychallengestoena
3、bletheIn[7],PerlscriptsareusedtorepresenttheflowmodelonthebroaderuseofGridservicesbeyondthedomainofscientificGrid.Ingeneral,thosesystemsaremonolithic,notbasedoncomputingistheabilitytoperformcomplextasksthatrequiretheanystandards,andthusdifficulttoreus
4、eandintegrate.modelingandcoordinationoftheenactmentofanumberofdistributedGridservices.WorkflowtechnologyisagoodcandidateCurrentlythereisamajoreffortintheGlobalGridForumforsupportingGridserviceflow.However,traditionalworkflowis[11]todevelopastandardGri
5、dServiceFlowLanguagestatic,thusunabletoexploitthedynamicinformationavailableinthe(GSFL)[1][12],whichwillprovideastandard,platform-GridandrespondtothedynamicnatureoftheGrid.Inthispaper,weindependentwayforthespecificationofaGridserviceflow.presentanadap
6、tiveframeworkthatprovidesadaptivemanagementofThepurposeofGSFListointegratetheeffortsfromtheGridGridserviceflows.TheframeworkisbasedonanAdaptiveGridcomputing,WebserviceandworkflowareastogetherfortheServiceFlowModelandissupportedbyanEvent-Trigger-Rulesp
7、ecificationofaGridServiceFlowLanguage.Itcontains(ETR)technologythatwillbeusedtotriggerrulesinadistributedfourcomponents:ServiceProviders,ActivityModel,fashiontoadaptaGridserviceflowtothedynamicGridenvironmentCompositionModel,andLifecycleModel.GSFLprov
8、idesaandthechangingrequirementsofaGridapplication.goodfoundationforourwork.WehavebuiltonthebasicKeywords:AdaptiveGridserviceflow,Gridserviceflowmodel,modelofGSFLandaddnewmodelingelementstosupportGridserviceflowframework,Gridservicestheadaptive
