nanoHUB.
org2/3/20061onlinesimulationsandmoreWorksupportedbySCI-0438246CyberInfrastructureAnOverviewofVirtualizationTechniquesRenatoFigueiredoAdvancedComputingandInformationSystems(ACIS)ElectricalandComputerEngineeringUniversityofFloridaNCN/NMITeamnanoHUB.
org2/3/20062onlinesimulationsandmoreWorksupportedbySCI-0438246CyberInfrastructureOutlineResourcevirtualization:MotivationsandtechniquesVirtualMachines:past,present,futureApplicationsinGridComputingnanoHUB.
org2/3/20063onlinesimulationsandmoreWorksupportedbySCI-0438246CyberInfrastructurePhysicalcomputerProcessor,memory,andI/OHarddiskandnetworkinterfacesarekeycomponentsoftheI/OsubsystemProcessorrunsinstructions.
Memoryholdsdataforfastoperation.
Diskholdsdatainpersistentstate(files,directories).
NetworksupportscommunicationnanoHUB.
org2/3/20064onlinesimulationsandmoreWorksupportedbySCI-0438246CyberInfrastructureVirtualComputerAvirtualcomputerhasthesame"lookandfeel"asaphysicalcomputerVirtualprocessor,virtualmemory,virtualdiskandvirtualnetworkcardCanrunexactlythesamesoftware(e.
g.
Windows,Linux)Butmultiplevirtualcomputerscantime-shareasinglephysicalcomputer!
LinuxWinXPNetBSDPhysicalmachineVirtualmachinesnanoHUB.
org2/3/20065onlinesimulationsandmoreWorksupportedbySCI-0438246CyberInfrastructureVirtualMachinesCapableofrunningfull-blownO/SwithinVM"guest"VMwareXenMicrosoftVirtualPCSupportlegacysoftwareAdvantageoverJavaVM,C#CLRVM"Host"VM"Guests"nanoHUB.
org2/3/20066onlinesimulationsandmoreWorksupportedbySCI-0438246CyberInfrastructureWhyvirtualComputersMotivationsResourcesharingandconsolidation;securityandisolationFamiliarexample:virtualmemoryinmulti-taskO/SsPhysicalmemorysharedbymultipleprocesses;eachprocesshasitsown,independentaddressspaceEaseofmanagementVirtual(software)vs.
physical(hardware)Copying,migration,archival,versioningVirtualizationaddsanextralayerofsecurityandisolationAusercan"crash"orrebootaVMwithoutcompromisingitshost,orotherVMsVMisnotnearlyascomplexasO/SBecausetheyaresmallerandsimpler,theyareharderto'hack'thananO/SDiscoVM:50KlinesofcodeIRIXO/S:millionsoflinesnanoHUB.
org2/3/20067onlinesimulationsandmoreWorksupportedbySCI-0438246CyberInfrastructureVirtualMachines-VMs"Classic"VMsTechnologytracesbacktotheearly70sLegacyO/SswhichwouldshareexpensivemainframesIBM370-zSeriesVirtualmachinedefined:"Asystem…which…isahardware-softwareduplicateofarealexistingmachine,inwhichanon-trivialsubsetofthevirtualmachine'sinstructionsexecutedirectlyonthehostmachine…"[Goldberg,1971]nanoHUB.
org2/3/20068onlinesimulationsandmoreWorksupportedbySCI-0438246CyberInfrastructureArchitectureofVMsHowareVMsimplementedCore:virtualmachinemonitor(VMM)softwarePresentsillusionofmachineduplicatetoothersoftwarerunningontopofitVirtualizationoperatesatthe(low)levelofindividualprocessorinstructionsCan"boot"existingoperatingsystems,rununmodifiedapplicationsontopofVMKeyinsighttoachievegoodperformance:RunmostinstructionsdirectlyonhardwareDSameperformanceaswithoutaVMMEmulatefewinstructionsthatrequirespecialhandlingDVirtualizationoverheadnanoHUB.
org2/3/20069onlinesimulationsandmoreWorksupportedbySCI-0438246CyberInfrastructureExample-performanceExamplequantifyingvirtualizationoverheadfortypicalCPU-intensivescientificapplicationsSpecHPCbenchmarksExperimentalsetup:Physical:dualPentium-III,933MHz,512MBmem,RedHat7.
1,SMPkernelVirtual:VMwareworkstation,128MBmem,RedHat7.
1uniprocessorkernelNativeVMOverheadSPECseis14806s14946s1.
0%SPECclimate9304s9693s4.
2%nanoHUB.
org2/3/200610onlinesimulationsandmoreWorksupportedbySCI-0438246CyberInfrastructurePerformanceOverheadscanbelargerwithdiskI/O,networkactivityXenVMMachievesnear-nativeperformanceCPUCPU+I/OCPU+I/O+netBarhametal,"XenandtheArtofVirtualization",SOSP2003nanoHUB.
org2/3/200611onlinesimulationsandmoreWorksupportedbySCI-0438246CyberInfrastructureVirtualmachinesoftwareSeveralmaturevirtualizationproductsnowavailablefortypicaldesktopsandservers;hereisabriefoverviewVMwarePioneerofproductsbringingVMstoIntel-baseddesktopsandserversProductsWorkstationDEasytoinstallanduse;goodperformanceandseveralfeaturesPlayerDFree!
Can"play"VMscreatedbyWorkstationandESXGSXD"Group"server;moremanagementtoolsESXDEnterpriseserver;higherperformance,severalmanagementfeatures,advancedschedulingFormoreinformationanddownloads:http://www.
vmware.
comnanoHUB.
org2/3/200612onlinesimulationsandmoreWorksupportedbySCI-0438246CyberInfrastructureVirtualmachinesoftwareMicrosoftAcquiredstart-up(Connectix)andaddedVMstoitslineofproductsPlanstohaveVMsupportaspartoffuturereleasesofWindowsVirtualPCAkintoVMware'sworkstation.
CanrunVMwareVMs(andvice-versa)Unlikeworkstation,doesnotrunontopofLinuxCanrunIntel-basedVMs(e.
g.
Windows)onPowerPC-basedMacsVirtualServerAkintoVMware'sGSXserverFormoreinformation:http://www.
microsoft.
com/Windows/virtualpc/default.
mspxhttp://www.
microsoft.
com/windowsserversystem/virtualserver/default.
mspxnanoHUB.
org2/3/200613onlinesimulationsandmoreWorksupportedbySCI-0438246CyberInfrastructureVirtualmachinesoftwareXenOpen-sourceVMinitiallydevelopedatCambridgePackaginganddistributionnowhandledbystart-upcompanyXenSourceDesignedtoachievehighperformance"Para-virtualization"techniquestoreducevirtualizationoverheadButpara-virtualizationrequiresoperatingsystemstobemodifiedbeforetheyrunonXenTypically,XenrunsLinux,FreeBSDorNetBSDWithnewIntel/AMDprocessors,XenisbeginningtosupportunmodifiedoperatingsystemsFormoreinformationanddownloads:http://www.
xensource.
comnanoHUB.
org2/3/200614onlinesimulationsandmoreWorksupportedbySCI-0438246CyberInfrastructureVirtualmachinesoftwareParallelsWorkstationLow-costVMComparabletoVMwareworkstation,WindowsVirtualPCRunsonbothWindowsandLinuxServer,Enterpriseserver:due2006Formoreinformationanddownloads:http://www.
parallels.
comnanoHUB.
org2/3/200615onlinesimulationsandmoreWorksupportedbySCI-0438246CyberInfrastructureHardwaresupportMuchofthevirtualizationoverheadtodayareduetoprocessorsnotbeingdesignedwithvirtualizationinmindSeminalpaperbyPopek,Goldberg(1974)providesbasicguidelinesEfficientVMMcanbedesignedif:1.
Processorhasprotectionmechanisms,and2.
Privilegedinstructionsthatread/writesystemstatusmustcauseexceptionsifrunatnon-privilegedlevelModernmicroprocessorssupportprotection(condition1)However,secondconditionrarelysatisfiedDE.
g.
Intel'x86':17problematicinstructionsToday,VMsmustuseseveralsoftware'tricks'tocircumventproblematicinstructionsinprocessorssuchasIntel/AMDTomorrow:processorshavebeen/arebeingredesignedtosupportmoreefficientVMsIntelVTindual-core"Yonah";AMD"Pacifica"nanoHUB.
org2/3/200616onlinesimulationsandmoreWorksupportedbySCI-0438246CyberInfrastructureBeyondasinglehostOnevirtualmachineSinglephysicalmachine(uni/multi-processor);multipleconcurrentO/SsVMmonitors(VMware,Xen)virtualizelocaldevicesInterconnectedVMsEmergingapplicationsnotconsideredinearlyVMdaysHowtovirtualizenetworkingandremotestorageaccessHowtoschedule,manageVMsbeyondlocalareanetwork(LAN)domainboundariesnanoHUB.
org2/3/200617onlinesimulationsandmoreWorksupportedbySCI-0438246CyberInfrastructureApplicationsinGridcomputingGoal:harnesscomputingpowerofdistributeddesktops,servers,clustersComputingasutilityAnalogytopowergridComputinggrid:Outletisthenetworkjack;payperprocessorcycles,storage,bandwidth,applicationtimeusedApplications:Nanoelectronicsonlinesimulation-nanoHUBManyothers:high-energyphysics,hurricanepathprediction,seismicmodeling,proteinsequencing,CADdesign/simulation,renderingfarms,financialanalysis,…VirtualizationfacilitatesmanagementanddeploymentofGridresourcesnanoHUB.
org2/3/200618onlinesimulationsandmoreWorksupportedbySCI-0438246CyberInfrastructureGridcomputingonvirtualresourcesThreevirtuesofvirtualizationManifolding,polymorphism,multiplexingMultiple,independentvirtualresourcesshareaphysicalresourceVMs:Isolation–improvedsecurityMultipleconcurrentO/Ss–time-sharingIndependentconfiguration–flexibilityApproach:applyvirtualizationmachines,diskstorageandnetworkThenanoHUBandtheunderlyingIn-VIGOmiddlewareApplicationofthesetechniquesresultinaunique,flexiblecyberinfrastructurenanoHUB.
org2/3/200619onlinesimulationsandmoreWorksupportedbySCI-0438246CyberInfrastructureSummaryVirtualmachinesarebecomingmoreandmorepervasiveinenterpriseanddesktopenvironmentsHardwareandsoftwarevendorsareincreasinglysupportingvirtualizationCompetition–betterproducts,lowerpricesVirtualizationiskeytoaflexiblecomputationalcyberinfrastructurenanoHUBandIn-VIGO:applyvirtualizationtobringonlinesimulationstothenano-*community
HostKvm,我们很多人都算是比较熟悉的国人服务商,旗下也有多个品牌,差异化多占位策略营销的,商家是一个创建于2013年的品牌,有提供中国香港、美国、日本、新加坡区域虚拟化服务器业务,所有业务均对中国大陆地区线路优化,已经如果做海外线路的话,竞争力不够。今天有看到HostKvm夏季优惠发布,主要针对香港国际和韩国VPS提供7折优惠,折后最低月付5.95美元,其他机房VPS依然是全场8折。第一、夏...
中秋节快到了,spinservers针对中国用户准备了几款圣何塞机房特别独立服务器,大家知道这家服务器都是高配,这次推出的机器除了配置高以外,默认1Gbps不限制流量,解除了常规机器10TB/月的流量限制,价格每月179美元起,机器自动化上架,一般30分钟内,有基本自助管理功能,带IPMI,支持安装Windows或者Linux操作系统。配置一 $179/月CPU:Dual Intel Xeon E...
今天CloudCone发布了最新的消息,推送了几款特价独立服务器/杜甫产品,美国洛杉矶MC机房,分配100Mbps带宽不限流量,可以选择G口限制流量计划方案,存储分配的比较大,选择HDD硬盘的话2TB起,MC机房到大陆地区线路还不错,有需要美国特价独立服务器的朋友可以关注一下。CloudCone怎么样?CloudCone服务器好不好?CloudCone值不值得购买?CloudCone是一家成立于2...
hdchina.org为你推荐
虚拟主机服务虚拟主机服务器的区别免费虚拟空间有国内免费虚拟主机空间吗asp主机如何用ASP代码实现虚拟主机域名服务商请问那些域名服务商是怎么捣鼓这么多域名的? 它们为什么可以做这个ip代理地址代理IP是什么网站空间购买在哪里购买网站空间手机网站空间手机网页空间需要多大?虚拟主机控制面板如何利用虚拟主机控制面板对网站进行管理重庆虚拟主机万网M3型虚拟主机怎么样?速度如何?河南虚拟主机新网的虚拟主机怎么样?
河南vps 免费试用vps warez 国外主机 优key 双12活动 好玩的桌面 论坛空间 本网站服务器在美国 卡巴斯基官方免费版 圣诞促销 seednet 泉州移动 100m独享 免费申请网站 上海服务器 免费asp空间申请 群英网络 服务器硬件配置 什么是dns 更多