浅谈云计算英文版.docx

浅谈云计算英文版.docx

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浅谈云计算英文版

AReviewOfCloudComputing

Abstract:

cloudcomputingisakindofsupercalculationmodebasedonInternet.Forthecategoryofcloudcomputing,thispaperconcludestheconceptofcloudcomputing,emergingbackground,thepresentmainapplications,thefuturedevelopmentoftheprospectandthepresent'sproblems.

Keywords:

cloudcomputing;dataprocessing;distributedcomputing;Internet

1.ProducingofCloudComputing

1.1whatiscloudcomputing

TheproducingofCloudcomputinghasabigbackgroundinevitability.First,thedevelopmentofCommunicationandInternetisfasterthanthedevelopmentofComputer.ThatsituationoffersasoilforgrowingofCloudcomputer.Second,Softwareengineeringchangedthewayoffaceingtheservicesuchasfacingmachine,languageandmiddlewareintothewayoffacingserviceandneed.ThatmadeSAAS（Software as a Service）tocometrue.Third,theusersbeginningtopaycloseattentiontocorebusinessmoreandmore.Theydon'tneedtobecomeareal“Amateurengineers”.ItiswhattheCloudcomputerbroughttheimportantchangingonthewayofusingITfacilityforusers.Cloud computing is a resource delivery and usage model, it means get resource （Hardware, software）via network. The network of providing resource is called ‘Cloud’. The hardware resource in the ‘Cloud’ seems scalable infinitely and can be used whenever.

1.2Theprincipleofcloudcomputing

1.2.1threemethodofcalculation:

Parallelprocessing

Parallelprocessingcomputersystemcanperformacalculationoftwoormoreprocessors.Processorscanworksimultaneouslyondifferentaspectsofthesameprogram.Fortheuseofparallelprocessing,itcanbesaidofaprogramexecutedonnprocessorsspeedmaybeperformedonasingleprocessorspeedntimes.

Distributedprocessing

Distributedprocessingsystemwillbeindifferentlocationsormultiplecomputerswithdifferentfunctionsordifferentdatacommunicationsnetworklinkingunderthecontrolofthecontrolsystemofunifiedmanagementandcoordinationtocompletethecomputersystemforinformationprocessingtasks.

Gridcomputing

GridcomputingisaccompaniedbytheInternetandtherapiddevelopmentofthenewcomputingmodel,specificallyforcomplexscientificcalculations.ThiscomputingmodelistheuseoftheInternetdispersedgeographicallycomputerorganizationintoa"virtualsupercomputer",eachofwhichinvolvedinthecalculationcomputerisa"node",theentirecalculationismade​​upofthousands"nodes"consistingofagrid,sothismethodofcalculationiscalledgridcomputing.

Whatcloudcomputingis?

Cloudcomputingisanemergingbusinesscomputingmodel.

Specifically,CloudComputingisakindofdistributedprocessing,parallelprocessingandgridcomputingdevelopment,orcommercialimplementationofthesecomputerscienceconceptsThetransmissioncapacityofthehigh-speedInternet,dataprocessingprocessfromapersonalcomputerorservertoaclusterofcomputersontheInternet.,Thisisarevolutionarymove,theanalogy,whichislikeashiftfromtheoldsingle-generatormodetothemodeofthepowerplantcentralizedpowersupply.Itmeansthatcomputingpowerasacommoditycirculation,likegas,waterandelectricity,like,accesstoconvenient,low-cost.Forexampleit!

Ourcomputingmodelismostlocallyinstalledsoftware,andthenexchangedatawiththeserverthroughlocalprocessing,cloudcomputing,wedonotneedlocalprocessing,justusethebrowser.

Afterunderstandingofwhatcloudcomputing,letusunderstandsomeoftheothercloudcomputing.

CloudComputingArchitecture

Mostofthecloudcomputinginfrastructureistransmittedthroughthedatacenterareliableserviceandthedifferentlevelsofvirtualizationtechnologyontheserver.Peoplecanusetheseservicesinanynetworkinfrastructure.

Cloudserver

Cloudserverisasetofclusteredserversonvirtualquasi-independentpartoftheserver,cluster,eachserverhasamirrorimageofthecloudserver.

AlsocloudcomputingissimilarwithVPSservervirtualizationtechnology,cloudserverisaVPSisavirtualsoftware,theVZorVMonasingleservervirtualquasi-independentpartoftheserver,eachpartcanbedonetoseparatetheoperatingsystem,managementmethodsthesameserver.

1.2.2Thecoretechnologyofcloudcomputing

1）Programmingmodel.Forlarge-scaledatasets（greaterthan1TB）parallelcomputing.Strictprogrammingmodelthatmakescloudcomputingprogrammingenvironmentisverysimple.

2）Hugeamountsofdatadistributedstoragetechnology.Cloudcomputingsystemconsistsofalargenumberofservers,aswellasalargenumberofusers,cloudcomputingsystemusesthestoreddataofdistributedstorage,redundantstoragetoensuredatareliability.

3）Hugeamountsofdatamanagementtechnology.Cloudcomputingonthedistributionofvastamountsofdataprocessing,analysis,datamanagementtechnologynecessarytoefficientlymanagelargeamountsofdata.

Virtualizationtechnology.Virtualizationtechnologyenablessoftwareapplicationsandtheunderlyinghardwareisolation,whichincludesasingleresourceisdividedintomultiplevirtualresourcessplittingmode,includingtheintegrationofmultipleresourcesintoavirtualresourceaggregationmode.Abstracttheserverphysicalresourcesintologicalresource,allowsasingleserverintoseveralvirtualserversorevenhundredsofisolated,wearenolongerlimitedbyphysicalboundaries,buttheCPU,memory,diskI/Ohardwareintoadynamicmanagementoftheresourcepool,toimproveresourceutilization,simplifysystemsmanagement,serverconsolidation,ITbusinesschangemoreresilient.

2.1TheapplicationareaofCloudComputing

Aswellknown,anewtechnologyisinventedistomeettheneedsoftheapplication.Andthetechnologywillalsocontinuouslyimproveanddevelopwiththeneedsoftheapplication.SoistheCloudComputing.Cloudcomputingareabletobeappliedbecauseofitsmassofdataprocessingpowerandefficientcomputationalability.ButOwingtothecloudcomputingstartedlate,nowalotofapplicationarestillinstudyingstage.Thus,Ionlyplantointroducesomeapplicationswhichhaveusedasfollowing.

2.1.1Scientificresearch

Therearethreemajorapplicationsinscientificresearch,namelyearthquakemonitoring,marineinformationmonitoringandastronomycalculationinformationprocessing.Theseapplicationsneedtocombinewithsensortechnology.Suchastemperaturetransmitter,depthsensor.Thesensorsareusedtocollectsignalandconverttovoltagesignal,thensendthemtoCloudcomputingserversthroughInternettoprocessandstore.Wecangetfromtheserverswhenneededatanytime.Becausetheinformationisoflargeamount,itneedhighspeedpowerfulcomputertoprocess,nowthe"Cloud"isusedon.ThisisthemajorusingofCloud.

2.1.2NetworkSecurity

Networksecurityisnowaverypopulartopic.Especiallythenetworkvirusisgrowingrapidly.Soviruslibrarystorageisamajorconcern.Cloudmassdatastoragecapacitycanmeettheneed.Forexample,Rising"CloudSecurity"plan,itsworkingprincipleisasfollows.Theclientcanbeautomaticallytoconnecttotheserverandscanninguser'sPC,thensendthesuspiciousobjectstoserverstomatchandreturntheresultinseconds.Theserverswillwarntheclienttodealwiththeobjectiftheobjectisvirus.AnotherusingistheSpamshieldingwhichisalsousedthecloudmassdatastoragecapacity.

2.1.3Medicine

DNAinformationstorageisthebestreflecttionofthemassdatastorageofcloud.1.3billionpeopleintheworldwithuniqueDNAinformationneedtostoreandanalysis.Wemusthaveenoughroomtostoretheinformationandaccesstoitatanytime.The"Cloud"isusedtoachieveit.Andit'salsoappliedtocasesstoragewhichcanhelptoachieveglobalmedicalintegration.Besides,medicalimageprocessingisalsoaimportantapplication.

2.1.4Internet

Nowthemostimportantapplicationsofnetworkisretrievalservice.Butthemassofinformationstoredintheservers.Inordertogetwhattheuserwanted,theInternetsuppliersmustsupplyfastandefficientalgorithmtoscreeningbestmatchedinformation.Thusthecloud'sefficientcomputingpowerisusedtodoit.Forexample,GoogleCloudcomputingplatformisputforwardjusttoimplementefficientretrievalfunctionatfirst.AndE-mailserverandonlinereal-timetranslationarealsousedonCloud.

2.1.5Theradioandtelevisionindustryapplication

Thisapplicationonlyonideasstagenowandithasnotcomeintouse.TheideaisbigcablecompanyscanestablishaCloudcomputingplatformtogethertomeettheirneedtomakehighdefinitionandhighqualityaudio.Atthesametime,alittercablecompanysalsowanttomakesomehighqualityaudio,buttheycannotaffordtothehighconfiguredequipments.Sothebigcablecompanyscansparesomeidleresourcestothelitteroneswhichneeded.Inthisway,notonlycantheymeettheirownneed,butalsocantheymakefullyuseoftheirresources.

Otherwise,nowsomesensitiveinformationlikeradioandvideoneedlargemountofspacetostore,sowecanstorethemtotheCloudwhichhasmassdatastoragecapacity.

2.2ThefourfamousCloudserviceplatforms

Actually,theCloudComputingresearchbyacademicismuchearlierthantheproposalofitsconcept.We,theChineseresearchers,havehadthetransparentComputingideabeforetheemergenceofthetermwhichiscalled"CloudComputating".Transparentcloudcomputingembodiesthecharacteristicsofcloudcomputing,thatisdynamicresourcepools,virtualization,transparenttotheuseretc.

Atpresent,industrytoprovidecloudcomputingthatnotmanycompanies.AndmoreinfluentialplatformshaveGoogleCloudcomputingplatform,IBMBlueCloudplatform,AmazonElasticComputeCloud（EC2）platform