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《面向電信業(yè)務(wù)支撐的網(wǎng)格應(yīng)用中任務(wù)調(diào)度技術(shù)的研究》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、南京郵電大學(xué)碩士研究生學(xué)位論文摘要摘要網(wǎng)格技術(shù)是近年來(lái)國(guó)際上興起的一種重要信息技術(shù),其目標(biāo)是實(shí)現(xiàn)對(duì)地理上廣泛分布的大量異構(gòu)資源進(jìn)行共享。任務(wù)調(diào)度是網(wǎng)格技術(shù)的一個(gè)重要組成部分,它要根據(jù)任務(wù)信息采用適當(dāng)?shù)牟呗园巡煌蝿?wù)分配到相應(yīng)的資源節(jié)點(diǎn)上去運(yùn)行。電信業(yè)務(wù)支撐系統(tǒng)是電信行業(yè)的核心系統(tǒng),它具有可靠性高、協(xié)同性好和安全性高等特點(diǎn)。論文以電信業(yè)務(wù)支撐系統(tǒng)為背景,研究如何在電信業(yè)務(wù)支撐系統(tǒng)中實(shí)現(xiàn)高效的網(wǎng)格任務(wù)調(diào)度。論文首先分析了電信業(yè)務(wù)支撐系統(tǒng)任務(wù)的特點(diǎn),提出了一種面向電信業(yè)務(wù)支撐系統(tǒng)網(wǎng)格的信任模型,定義了節(jié)點(diǎn)信任指數(shù)(包括節(jié)點(diǎn)執(zhí)行信任指數(shù)、節(jié)點(diǎn)協(xié)同信任指數(shù)、節(jié)點(diǎn)安全信任指數(shù)和節(jié)點(diǎn)獎(jiǎng)懲信任指數(shù))和
2、任務(wù)信任閥值指數(shù),并且給出了各種信任指數(shù)的計(jì)算公式;在基于信任模型的網(wǎng)格任務(wù)調(diào)度框架的基礎(chǔ)上,對(duì)任務(wù)的執(zhí)行時(shí)間預(yù)測(cè)、任務(wù)的動(dòng)態(tài)遷移和系統(tǒng)的負(fù)載均衡進(jìn)行討論并給出了相關(guān)的策略;最后,在Min-Min算法思想基礎(chǔ)上,提出了基于信任模型的電信業(yè)務(wù)支撐系統(tǒng)網(wǎng)格任務(wù)調(diào)度算法(簡(jiǎn)稱Trust.Min-Min算法),可以提高系統(tǒng)的可靠性和實(shí)現(xiàn)負(fù)載均衡。論文采用SimGrid工具包對(duì)所提出的算法進(jìn)行了仿真實(shí)驗(yàn),通過(guò)與Min-Min算法的結(jié)果比較,驗(yàn)證了Trust.Min.Min算法在系統(tǒng)可靠性和負(fù)載均衡上的有效性。關(guān)鍵詞:網(wǎng)格,電信業(yè)務(wù)支撐系統(tǒng),任務(wù)調(diào)度,信任度南京郵電大學(xué)碩士研究生學(xué)位論文ABSTR
3、ACTABSTRACTOddtechnologyisanimportantinformationtechnologyraisedoninternationalinrecentyears、)lrimtheaimofmakingplentifulheterogeneousresources,whicharedistributedonbroadgeographysharedbyallusers.Taskscheduling,allimportantpartofgrdtechnology,isusingappropriatestrategytodistributedifferenttaskst
4、oproperresourcenodesaccordingtotheinformationofthetask.TelecomBusinessSupportingSystemisthecoresystemofthetelecommunicationsindustry,whichhasthecharacteristicofhighreliability,goodcooperationandhilghsecurityandSOon.TheresearchbackgroundofthepaperisbasedonTelecomBusinessSupportingSystem,researcho
5、nhowtoimplementthegrdtask’SefficientschedulinginTelecomBusinessSupportingSystem.ThecharacteristicofthetaskoftheTelecomBusinessSupportingSystemisanalyzedfirst,andthenatrustmodelwhichissuitableforTelecomBusinessSupportingSystemisproposedinthepaper.ThetrustmodeldefinestheTaskTrustThresholdIndexandN
6、odeTrustIndexwhichincludesNodeExecuteTrustIndex,NodeCooperationTrustIndex,NodeSecurityTrustIndexandNodeIncentiveTrustIndex,andthengivesthecorrespondingformulas.Thepapergivestherelevantstrategiesonthepredictionoftheexecutiontimeofthetask,dynamicmigrationofthetaskandtheloadbalanceofsystem,basedont
7、hegridtaskschedulingframeworkwhichisbasedontrustmodel,finallyputsforwardintheTelecomBusinessSupportingSystemforgridtaskschedulingalgorithm(Trust-Min—MinAlgorithm)basedonMin-MinAlgorithmtoimprovesystemreliabilityandbalanceloa