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
ZJI又上新了!商家是原Wordpress圈知名主机商:维翔主机,成立于2011年,2018年9月启用新域名ZJI,提供中国香港、台湾、日本、美国独立服务器(自营/数据中心直营)租用及VDS、虚拟主机空间、域名注册等业务。本次商家新上韩国BGP+CN2线路服务器,国内三网访问速度优秀,适用8折优惠码,优惠后韩国服务器最低每月440元起。韩国一型CPU:Intel 2×E5-2620 十二核二十四线...
PQ.hosting怎么样?PQ.hosting是一家俄罗斯商家,正规公司,主要提供KVM VPS和独立服务器,VPS数据中心有香港HE、俄罗斯莫斯科DataPro、乌克兰VOLIA、拉脱维亚、荷兰Serverius、摩尔多瓦Alexhost、德国等。部分配置有变化,同时开通Paypal付款。香港、乌克兰、德国、斯洛伐克、捷克等为NVMe硬盘。香港为HE线路,三网绕美(不太建议香港)。免费支持wi...
IT狗为用户提供 在线ping、在线tcping、在线路由追踪、域名被墙检测、域名被污染检测 等实用工具。【工具地址】https://www.itdog.cn/【工具特色】1、目前同类网站中,在线ping 仅支持1次或少量次数的测试,无法客观的展现目标服务器一段时间的网络状况,IT狗Ping工具可持续的进行一段时间的ping测试,并生成更为直观的网络质量柱状图,让用户更容易掌握服务器在各地区、各线...
hdchina.org为你推荐
网络域名注册怎么注册网络域名并建立自己的网站呢网站空间租赁网站空间租用费多少美国主机租用美国服务器多少钱一年?美国主机空间买空间网的美国主机咋样?免费虚拟主机空间免费的虚拟主机空间有没有免费国内空间现在国内比较好的免费网站空间有那个啊?代理主机主机做成代理服务器,其他局域网内的电脑必须通过我的这个网络出去什么是虚拟主机什么是“虚拟主机”?请解释祥细些!韩国虚拟主机大家用的虚拟主机是国内的还是香港的还是韩国的还是美国的虚拟主机管理系统大家都用的是什么虚拟主机管理系统?分享一下
jsp虚拟主机 武汉域名注册 美国vps 抗投诉vps主机 ftp空间 亚洲大于500m 狗爹 私人服务器 ubuntu更新源 天猫双十一抢红包 ibrs 国外网站代理服务器 亚洲小于500m web服务器架设 申请个人网站 seednet 重庆双线服务器托管 如何建立邮箱 银盘服务 免费mysql数据库 更多