MIMS： Towards a Message Interface Based Memory System.pdf

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MIMS： Towards a Message Interface Based Memory System.pdf

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ChenLC，ChenMY，RuanY eta1．M IM S：Towardsamessageinterfacebasedmemorysystem ．JOURNALOFCOMPUTER SCIENCEANDTECHNOLOGY 29(2)：255—272Mar．2014．DOI10．1007／s11390-014—1428．7 M IM S：TowardsaM essageInterfaceBasedM emory System Li—ChengChen，(陈荔城)，StudentMereb．er，CCF,ACM,IEEE Ming—YuChen，(陈明宇)，Member,CCF,ACM,IEEE,YuanRuan (阮元)，Member,CCF,ACM Yong—BingHuang，(黄永兵)，StudentMember,CCF,ACM,IEEE Ze—HanCui，。(崔泽汉)，StudentMember,CCF,ACM,IEEE,Tian-YueLu，(卢天越) andYun-GangBao (包云岗)，Member,CCF,ACM,IEEE StateKeyLaboratoryof ComputerArchitecture，InstituteofComputingTechnology，ChineseAcademyofSciences Beijing100190,China UniversityofChineseAcademyofSciences，Beijing100049，China E-mail：{chenlicheng，cmy，ruanyuan，huangyongbing，cuizehan，lutianyue，baoyg}@ict．ac．an ReceivedNovember13，2013；revised January 14，2014． A bstract Thedecades．old synchronousmemorybusinterfacehasrestrictedmany innovationsin thememory system ． whichisfacingvariouschallenges(orwalls)intheeraofmulti-coreandbigdata．Inthispaper，wearguethatamessage- based inteffaceshouldbeadoptedtoreplacethetraditionalbus．based interfacein thememorysystem．A novelmessage interfacebasedmemorysystem calledMIMSisproposed．ThekeyinnovationofMIM Sisthatprocessorscommunicatewith thememorysystem throughauniversalandflexiblemessagepacketinterfac e．Eachmessagepacketisallowedtoencapsulate multiplememoryrequests(orcommands)andadditionalsemanticinformation．Thememorysystem ismoreintelligentand ac tivebyequippingwith alocalbufferscheduler，which isresponsibleforprocessingpackets，schedulingmemoryrequests， preparingresponses．andexecutingspecificcommandswiththehelpofsemanticinofrmation．UndertheMIMSframework． manypreviousinnovationsonmemoryarchitectureas wellas new optimizationoppOrtunitiessuchas addresscompression and continuousrequestscombination canbenaturallyincorporated．Theexperimentalresultson a 16．corecycl-edetailed simulationsystem show that：withaccurategranularitymessage，MIMScanimprovesystem perofrmanceby53．2l％ and reduceenergydel