基于OGSA的校园网格模型研究(英文)-豆柴文库

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基于OGSA的校园网格模型研究(英文)
Introduction
Withtherapiddevelopmentofinformationtechnology,moreandmoreserviceandresourcesaredemandedbystudentsandfacultiesinuniversities.However,thetraditionalcentralizedsystemcannotprovideefficientandflexiblecomputingandresourcesharing.Therefore,theconceptofacampusgridmodelbasedonOGSA(OpenGridServicesArchitecture)isputforward.Thispaperwillexplorethedevelopment,technicalarchitecture,andapplicationsofthismodelinthecontextofcampusnetwork.
DevelopmentofCampusGridModel
Thecampusgridmodelisanewtypeofservicemodelforcampusinformationservicesystems,whichaimstointegratethescatteredresources,data,computingpower,andservicesintoaflexible,personalized,andefficientsystem.Thecampusgridmodelalsoemphasizestheintegrationofheterogeneousresources,includinghardware,software,andnetworkingdevices,andconsistsofamiddlewarelayer,agridservicelayer,andanend-userlayer.Themiddlewareisresponsibleformanagingandschedulingresources,whilethegridservicelayerprovidesservicesforend-users.
Asaframeworkforgridcomputing,OGSAprovidesastandardforgridcomputingprotocols,suchasWS-Resource,WS-Notification,andWS-Eventing.OGSAuseswebservicestechnology,whichisknownforitsinteroperabilityandflexibility,toprovidedistributedcomputing,resourcesharing,andcollaboration.TheOGSAstandardcanbeappliedtovariousheterogeneouscomputingenvironments,makingitsuitableforcampusgriddevelopment.
TechnicalArchitectureofCampusGridModel
Thearchitectureofthecampusgridmodelcanbedividedintothreelayers,namelymiddlewarelayer,gridservicelayer,andend-userlayer.Themiddlewarelayerprovidesaplatformforresourcemanagement,jobscheduling,anddatatransfer,andusuallyconsistsofgridmiddleware,filesystems,anddatamanagementsystems.Thegridservicelayerprovidesvariousgridservices,includingresourcediscoveryandallocation,taskexecution,andjobmonitoring.Theend-userlayerincludesapplicationsoftwareanduserinterfaces,whichallowuserstoaccessthegridservicesandresources.
ThecampusgridmodelarchitectureusesOGSAastheunderlyingtechnologytorealizegridcomputing