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ID:31973919
大小:3.38 MB
页数:130页
时间:2019-01-29
《基于qos的校园网格中关键技术.研究》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、四川大学博士学位论文thatdifferentalgorithmscallbeadoptedinthelight-loadandtheheavy·loadstatus.(2)QoSmechanisms’researchforgrid:AccordingtothedifferenceofQoScharacteristics.whichareexpressedbyQoSparameters,invirtualorganizationslayerGridQoSparametersal'eclassified,andtheQoSmea
2、surementandreal/zationmethodsaregiven,andfinalIythecampus鲥dsystemframeworka∞given.Atthesametime,aimingatthe鲥denvironmenttoe珊Urethequalityofservicesisdifficult,asetofpracticalllesources,tasksanduserclassificationmechanismareprovided.Theresourcesandtasksshouldbedivide
3、dintohighI/0requiredcategory,higlI-performancecomputingcategoryandlargememorycategory,and.SOon.WhentheresourcesfirstlyaleaddedtoGrid,itmustprovideperformanceparameterforGridsystem.Afterthesystemverifies,thesystemwillclassandevaluateit.Thetaskwillbeallocatedtothereso
4、urces,whichisadeptincompletingthistypeoftasks.Inexecutingprocess,thesystemrenewtoevaluatethoseresourcebasedonthestatusofthetaskexecuting.Ontheotherhand,Griduserswillbedividedintodifferentprioritybasedonthepriorityvaluelevels,andthetaskswillbeservicedaec,ordingtoprio
5、rity.Whenthepfiodtyissame,task’Sexecutingwillusethemethodoffirst-come—first-service.Underthismechanism,therefusalrateislower,butthesatisfactionrateishigh.Onthebasisoftheabove-mentioned,forimpmvingthetasksehedulingmethods,adynamicregion’S鲥dresourcemanagementalgorithm
6、sbasedonassociationruleareputforward.So,TheQoSmechanismsofGridalerealizedinacertainextenL(3)ThereseaKhofgridservicesdependency:Gridservicedependencyanalysisisnusefultechniquetosolveproblemssuchas鲥dservicetestingmaintenance,compositionandfailuredetectionin鲥dservicemi
7、ning(GS岣.AnapproachbasedOffgraphtheoryandmaWixmodelispmposedtoanalyze鲥dservicedependencies,Possibletypesof鲥dservicedependenciesareinvestigated.DefinitionsofdirectdependencygraphfoDG),directdependencymatrixfoD~D,d印endencyrelationmatrixfORM),degreeofdirectdependencyfo
8、DD)andminimalcover似c)aregivenout..(4)Gridtaskschedulingalgorithmrematch:AheavyloadsituationsinndynamicV一——婴型查堂竖主兰垡望塞rules-basedcorrelation
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