网格服务资源发现的研究

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1、大连交通大学硕士学位论文网格服务资源发现的研究姓名：何超申请学位级别：硕士专业：计算机应用技术指导教师：马海波20081214大连交通人学l：学硕十学何论文AbstractGridtechnologyis811importantdevelopmentdirectionofcurrentcomputertechnology．Itintegratesresourcesthatareconnectedbymeansofcommunicationmeasuresintoanorganicwhole．andsuppliesuserwithanewkindofcomputingplatformb

2、asedonInternet．Gridinformationserviceisthecoreofgridsystem．Itsgoalistoconnectandintegratevariousdistributedandheterogeneoushigh-performancecomputersthroughhigh-speedInternet．TheGISprovidesuniformaccesstogriddatastorageresources．Itisalsoconvenientforuserstofinding．accessanddealwitllinformation．D

3、uetolarge·scaleofgrd，inthegridenvironment，therearelargenumberofresources，thetypesofresourcesarecomplex，resourcemanagementstrategiesofresourceownersaredifferent，someoftheresourcesmayneedtotaketheinitiativetoleavethegrdenvironmentbecauseofthemanagementorWasforcedtowithdrawfromthegrdbecauseofsomeu

4、nforeseenerrorandSO，theresourcediscoveryunderlargescalegridenvironmentalbecomesverycomplexanddifficult．Theexistinggridresourcesfoundmodelhascompletelycentralizedresourcesfindingalgorithm，highFindingefficiency，butreliability，thereisasinglepointoffailure，scalabilityisratherpoor，limitedbytheabilit

5、yofthecentralinformationnode，doesnotapplytolargescalesystems；Inthefullydistributedmethods，thedisorderandnostructureofinformationresourcesspacemakesresourcediscoveryblindness，resourcediscoverybasiconfloodingorradioislessefficient．Fortheshortcomingsofgridresourcesdiscoverymodel，thispaperisgoingto

6、elaborateabasedonhierarchicaltreestructureandoverlaynetworkofthegrdresourcediscoverymodel．Themodelwillbelogicallyfromthegridisdividedintotwolayersfromtoptobottom：fromthelowergridhasavarietyofresourcesandservicesofthegrdnodesresources；forthetopgrdnodesofinformationandreliabledistributionnetworko

7、ftreecover，inchargeofinformationnodeTheorganization,managementandresourcelocator．Themodelisbasedonlayeredapproachtolarge—scaledistributiongrdtoimprovetheenvironmentalresourcesfoundinscalability，reliabilitytothenetworkoftreecoverto