基于域信任的自適應(yīng)網(wǎng)格工作流調(diào)度算法.pdf

1、華中科技大學(xué)碩士學(xué)位論文基于域信任的自適應(yīng)網(wǎng)格工作流調(diào)度算法姓名：姚鑫申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：系統(tǒng)工程指導(dǎo)教師：陳學(xué)廣20110222II華中科技大學(xué)碩士學(xué)位論文AbstractWiththedevelopmentofgridtechnologycloudcomputingmemecomplexapplicationscanbesolvedbyusinggridwkflowingridplatfm.Onlythroughthetradi

2、tionalwayofsecurityauthenticationcan’tsolvetheissuecausedbythedynamicautonomyofresource.Thispaperproposesawkflowschedulingalgithmtoensureoperatingefficiency.Basedondynamicassessingthetrustofeachdomainweproposeamethodtopr

3、oducetrustbasedschedulingondomainadaptivedynamicgridwkflow.Accdingtotheparallelactertaskdependencyofgridwkflowwedevelopanefficientreliableabstractgridwkflowmodel.Whenthesystemisrunningthismethodcanadaptivelytheappropriat

4、ephysicalservicetocompletetheabstractmodelbyrealtimeadjustment.UsuallywesetwkflowmodelinguseDAGPetrisetc.Becausethegrid’sacteristicsisperfmingconcurrenttaskswellthusparticularlysuitablefsolvingcomputationintensivedataint

5、ensiveapplications.SotheapplicationingridfitstheacteristicsofDAGmodelusingtheDAGmodelwecanreasonabledistributetaskgroupcalculatedifferentpriityoftasks.Fdeterminingthereliabilityofdifferentresourcestrustmechanismisintrodu

6、cedbutnotsimplyaddstothetrustpropertyinthewkflowschedule.Sincedomainstructureisthemoststructureofthegridweusedomaintrustmechanismdynamicadjustthetrustofdomainsduringoperationaccdingtothedomaintrusttochoicethedifferentsch

7、edulingmethodstoensureefficientoperationofthesystem.Experimentalresultsshowthatthemethodcannotonlyguaranteethestableofthesystembutalsoreducethetimecostincompletingtasks.italsocanadaptivelytheappropriatewaytocompletetheta