/ TransactionalMemory2ndedition-SynthesisLecturesonComputerArchitecture
TransactionalMemory2ndedition-SynthesisLecturesonComputerArchitecture
TransactionalMemory2ndedition-SynthesisLecturesonComputerArchitecture
Theadventofmulticoreprocessorshasrenewedinterestintheideaofincorporatingtransactionsintotheprogrammingmodelusedtowriteparallelprograms.Thisapproach,knownastransactionalmemory,offersanalternative,andhopefullybetter,waytocoordinateconcurrentthreads.TheACI(atomicity,consistency,isolation)propertiesoftransactionsprovideafoundationtoensurethatcon-currentreadsandwritesofshareddatadonotproduceinconsistentorincorrectresults.Atahigherlevel,acomputationwrappedinatransactionexecutesatomically-eitheritcompletessuccessfullyandcommitsitsresultinitsentiretyoritaborts.Inaddition,isolationensuresthetransactionpro-ducesthesameresultasifnoothertransactionswereexecutingconcurrently.Althoughtransactionsarenotaparallelprogrammingpanacea,theyshiftmuchoftheburdenofsynchronizingandco-ordinatingparallelcomputationsfromaprogrammertoacompiler,toalanguageruntimesystem,ortohardware.Thechallengeforthesystemimplementersistobuildanefficienttransactionalmemoryinfrastructure.Thisbookpresentsanoverviewofthestateoftheartinthedesignandimplementationoftransactionalmemorysystems,asofearlyspring2010. 本软件ID:10212150
Theadventofmulticoreprocessorshasrenewedinterestintheideaofincorporatingtransactionsintotheprogrammingmodelusedtowriteparallelprograms.Thisapproach,knownastransactionalmemory,offersanalternative,andhopefullybetter,waytocoordinateconcurrentthreads.TheACI(atomicity,consistency,isolation)propertiesoftransactionsprovideafoundationtoensurethatcon-currentreadsandwritesofshareddatadonotproduceinconsistentorincorrectresults.Atahigherlevel,acomputationwrappedinatransactionexecutesatomically-eitheritcompletessuccessfullyandcommitsitsresultinitsentiretyoritaborts.Inaddition,isolationensuresthetransactionpro-ducesthesameresultasifnoothertransactionswereexecutingconcurrently.Althoughtransactionsarenotaparallelprogrammingpanacea,theyshiftmuchoftheburdenofsynchronizingandco-ordinatingparallelcomputationsfromaprogrammertoacompiler,toalanguageruntimesystem,ortohardware.Thechallengeforthesystemimplementersistobuildanefficienttransactionalmemoryinfrastructure.Thisbookpresentsanoverviewofthestateoftheartinthedesignandimplementationoftransactionalmemorysystems,asofearlyspring2010. 本软件ID:10212150
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