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简介：集群是一个广泛使用的术语，意思是通过软件和网络连接把独立的计算机结合成一个统一的系统。在最基础的层面上，当共同使用两个或多个计算机解决一个问题的时候，就可以把它看作一个集群系统。集群通常用于高可用性(HA)以获得高可靠性，或者用于高性能计算(HPC)，以提供单个计算机力所不及的强大计算能力。按照定义，计算机集群就是一组互连的计算机，作为一个并行计算机系统而共同工作。

简介：Wehaveprototypedandanalyzeddesignofanovelapproachforthehighthroughputcomputing-acoreelementfortheemergingHENPcomputationalgrid.IndependenteventprocessinginHENPiswellsutedforcomputinginparallel.Theprototypefacilitatedsuseofinexpensivemass-marketcomponentsbypovidingfaulttolerantresilienece(insteadoftheexpensivetotalsystemreliablity)viahighlyscalablemanagementcomponents.TheabilitytohandlebothhardwareandsoftwarefailuresonalargededicatedHENPfacilitylimitstheneedforuserintervention.ArobustdatamanagementisespeciallyimportantinHENPcomputingsincelargedata-flowsoccurbeforeand/oratfereachprocessingtask.Thearchitectureofouractiveobjectobjectcoordinationschemaimplementsamulti-levelhierarchicalagentmodel,Itprovidesfaulttolerancebysplittingalargeoveralltaskintoindependentatomicprocesses,performedbylowerlevelagentssynchronizingeachotherviaalocaldatabase.Necessarycontrolfunctionperformedbyhigherlevelagentsinteractwiththesamedatabasethusmanagingdistributeddataproduction.ThesystemhasbeentestedinproductionenvironmentforsimulationsintheSTARexperimentatRHIC.Ourarchitecturalprototypecontrolledprocessesonmorethanahundredprocessorsatatimeandhasrunforextendedperiodsoftime.Twentyterabytesofsimulateddatahavabeenproduced.ThegenericnatureofourtwolevelarchitecturalsolutionfaulttoleranceindistributedenvironmenthasbeendemonstratedbyistsuccessfultestforthegridfilereplicationservicesbetweenBNLandLBNL.

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简介：Thispaperistoconstructa'digitallocal,regional,region'informationframeworkbasedonthetechnologyof'SIG'anditssignificanceandapplicationtotheregionalsustainabledevelopmentevaluationsystem.First,theconceptofthe'gridcomputing'and'SIG'isinterpretedanddiscussed,thentherelationshipbetweenthe'gridcomputing'and'digitalregion'isanalyzed,andtheframeworkofthe'digitalregion'isputforward.Finally,thesignificanceandapplicationof'gridcomputing'tothe'regionsustainabledevelopmentevaluationsystem'arediscussed.

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简介：Artificalneuralnetworks(ANN)arenowwidelyusedsuccessfullyastoolsforhithenergyphysics.Thepapercoverstwoaspects.First,mappingANNsontotheproposedringandlinearsystolicarrayprovidesanefficientimplementationofVLSI-basedarchitecturessinceinthiscaseallconnectionsamongprocessingelementsarelocalandregular,Second.itisdiscussedalgorthmicorganizingofsuchstructuresonthebaseofmodularalgebrawhoseusecanprovideanessentialincreaseofsystemthroughput.

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简介：ＣＯＭＰＵＴＩＮＧＡＲＥＡＳＢＯＵＮＤＥＤＢＹＲＡＴＩＯＮＡＬＢＥＺＩＥＲＣＵＲＶＥＳＧｕｏｊｉｎＷａｎｇ；ＴｈｏｍａｓＷ．ＳｅｄｅｒｂｅｒｇＣＯＭＰＵＴＩＮＧＡＲＥＡＳＢＯＵＮＤＥＤＢＹＲＡＴＩＯＮＡＬＢＥＺＩＥＲＣＵＲＶＥＳ￥ＧｕｏｊｉｎＷａｎｇ...

简介：Thispapergivesabackgroundofcrackers,thensomeattackeventsthathavehappenedinIHEPnetworksareenumeratedandintroduced.Atlastahighlyefficientdefencesystemthatintegratesauthor'sexperience,researchresultsandhaveputinpracticeinIHEPnetworksenvironmentisdescribedindetail,ThispaperalsogivesnetworkandinformationsecurityadviceandprocessforhighenergyphysicscomputingenvironmentintheInstituteofHighEnergyPhysicsthatwillimplementinthefuture.

简介：Knowledgeisoneofthemostimportantelementsinproductionandthefirstresourceinenterprise.Byintroducingknowledgetodecisionmaking,thispaperpresentsakindofknowledgedecisionmakingmodel(KDMforshort)basedongeneralizedcomputing.

简介：Adynamicalsystemforcomputingtheellipticboundaryproblemispresented.Itisshownthattheproposedsystemisgloballyasymptoticallystable.Thesystemcanbesimulatedbyaneuralnetwork.Simulationresultsarevalidandsatisfactory.

简介：Inordertofacetheexpectedincreaseinstatisticsbetweennowand2005,theBabarexperimentatSLACisevolvingitscomputingmodeltowardadistributedmultitiersystem.ItisforeseenthatdatawillbespreadamongTier-AcentersanddeletedfromtheSLACcenter,Aunifromcomputingenvirommentisbeingdeployedinthecenters,thenetworkbandwidthiscontinuouslyincreasedanddatadistributiontoolshasbeendesignedinordertoreachatransferrateof-100TBofdataperyear,Inparallel,smallerTier-BandCsitesreceivesubsetsofdata,presentlyinKanga-Root[1]formatandlaterinObjectivity[2]format,GRIDtoolswillbeusedforremotejobsubmission.

简介：这篇文章为解决建议扩大基于角色的存取控制(RBAC)模型动态并且多在格子计算的域问题，对模型的提出的描述被提供了。上下文的介绍和context-to-roleandcontext-to-permission的印射的关系帮助模型在格子环境适应动态性质。由授权代理人服务的multidomainrole继承关系认识到多在自治领域之中的领域授权。功能为在建立期间解决角色继承冲突被建议了多领域角色继承关系。

简介：Granularcomputingisanewintelligentcomputingtheorybasedonpartitionofproblemconcepts.ItisanimportantprobleminRoughSettheorytoprocessincompleteinformationsystemsdirectly.Inthispaper,agranularcomputingmodelbasedontolerancerelationforprocessingincompleteinformationsystemsisdeveloped.Furthermore,acriteriaconditionforattributionnecessityisproposedinthismodel.

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简介：Theelectronicmailhasbecometheindispensablefunctionindailyjob,andtheserverstabilityandperformancearerequired.UsingDCEandDFSwehavebuiltthedistributedelectronicmailsever,thatis,serverssuchasSMPT,IMAParedistributedsymmetrically,andprovidstheseamlessaccess.

简介：TheColliderDetectoratFermilab(CDF)collaborationrecordsandanalysesprotonanti-protoninteractionswithacenter-of-massenergyof2TeVattheTevatron,Anewcolliderrun,RunII,oftheTevatronstartedinApril.DuringitsmorethantwoyeardurationtheCDFexperimentexpectstorecordabout1PetaByteofdata.Withitsmulti-purposedetectorandcenter-ofmassenergyatthefrontier,theexperimentalprogramislargeandversatile.Theover500scientistsofCDFwillengageinsearchesfornewparticles,liketheHiggsbosonorsupersymmetricparticles,precisionmeasurementofelectroweakparameters,likethemassoftheWboson,measurementoftopquarkparametersandalargespectrumofBphysics.Theexperimenthastakendataandanalysedtheminpreviousruns.ForRunII,however,thecomputingmodelwaschangedtoincorporatenewmethodologies.thefileformatswitched.andbothdatahandlingandanalysissystemredesignedtocopewiththeincreaseddemands.Thispaper(4-036atChep2001)givesanoverviewoftheCDFRunIIcomputesystemwithemphasizeonareaswherethecurrentsystemdoesnotmatchinitialestimatesandprojections.Forthedatahandlingandanalysissystemamoredetaileddescriptionisgiven.

简介：Theemergenceofhighspeedwideareanetworksmakesgridcomputingareality.HowevergridapplicationsthatneedreliabledatatransferstillhavedifficultiestoachieveoptimalTCPperformanceduetometworktuningofTCPwindowsizetoimporvethebandwidthandtoreducelatencyonahighspeedwideareanetwork.ThispaperpresentsapureJavapackagecalledJPARSS(javaParallelSecureStream)thatdividesdataintopartitionsthataresentoverseveralparallelJavaStreamssimultaneouslyandallowsJavaorWebapplicationstoachieveoptimalTCPperformanceinagirdenvironmentwithoutthenecessityoftuningtheTCPwindowsize.SeveralexperimentalresultsareprovidedtoshowthatusingparallelstreamismoreeffectivethantuningTCPwindowsize.InadditionX.509certificatebasedsinglesign-onmechanismandSSLbasedconnectionestablishmentareintegratedintothispackage,Finallyafewapplicationsusingthispackagewillbediscussed.

简介：Thesurfacestatbilizedferroelectricliquidcrystaldeviceconfigurationandferroelectricliquidcrystalgatesaredescribed.Theliquidcrystalelectroopticalgateshavenumerousapplications,includingopticalcomputation,optodigitalcircuits,andopticalcommunicationnetworks.