简介:Inwormholemeshes,areliableroutingissupposedtobedeadlock-freeandfault-tolerant.Manyroutingalgorithmsareabletotoleratealargenumberoffaultsenclosedbyrectangularblocksorspecialconvex,noneofthem,however,iscapableofhandlingtwoconvexfaultregionswithdistancetwobyusingonlytwovirtualnetworks.Inthispaper,afault-tolerantwormholeroutingalgorithmispresentedtotoleratethedisjointedconvexfaultyregionswithdistancetwoornoless,whichdonotcontainanynonfaultynodesanddonotprohibitanyroutingaslongasnodesoutsidefaultyregionsareconnectedinthemeshnetwork.Theprocessors'overlappingalongtheboundariesofdifferentfaultregionsisallowed.Theproposedalgorithm,whichroutesthemessagesbyX-Yroutingalgorithminfault-freeregion,cantolerateconvexfault-connectedregionswithonlytwovirtualchannelsperphysicalchannel,andisdeadlock-andlivelock-free.Theproposedalgorithmcanbeeasilyextendedtoadaptiverouting.
简介:Amethod,calledTwo-DimensionalExtendedAttributeGrammars(2-DEAGs)fortherecognitionofhand-printedChinesecharactersispresented.Thismethodusesdirectlytwodimensionalinformation,andprovidesaschemefordealingwithvariouskindsofspecificcasesinauniformway.Inthismethod,componentsaredrawninguidedandredundantwayandreductionsaremadelevelbylevejustinaccordancewiththecomponentcombinationrelationsofChinesecharacters.Themethodprovidsalsopolysemousgrammars,coexistinggrammarsandstructureinferringswhihconstrainredundantrecognitionbycomparisonamongsimilarcharactersofcomponentsandgreatlyincreasethetoleranceabilitytodistortion.
简介:一、产品简介梅捷P4I875PDRAGON2是一款基于875P的主板,有关875P的特性介绍大家一定都耳熟能详了,这里就不多费笔墨了。主板CPU插槽的背部放置了一个X型支架,使得主板放在手里感到很有份量,北桥采用倾斜45度角设计,相比传统的正置式北桥,可加大MCH到内存之间的引线间的距离,减少引线之间的干扰,更有利于信号的传送。主板上的电容不论容量大小一律采用SACON的电解电容,主板的做工中规中矩。南桥采用了内置RAID功能的ICH5R,加装最新的IAA驱动可提供SATARAID0和RAID1两种RAID模式,主板BIOS的外频调节范围非常大,可线性调节至
简介:我们知道nForce2主板的北桥分为SPP和IGP两个版本,其中IGP版本北桥内置有一块相当于GeForce4MX级别的显卡,而传统内置显卡的性能一直都不敢恭维,主要的原因就是低下的内存带宽所致,而nForce2如果采用双通道模式,假设我们把CPU的外频提高到
简介:ManageabilityisanimportantfeatureofnextgenerationInternet;managementandmonitoringofIPv6-basednetworksareprovingabigchallenge.WhileleveragingcurrentIPv4-basedSNMPmanagementschemetoIPv6networks'managementneedisnecessary,itismoreurgenttocoinanewnetworkmanagementarchitecturetoaccommodatethescalabilityandextensibilityrequirementsofnextgenerationInternetmanagement.Thepaperproposesanovelnetworkmanagementarchitecture,IMN(InternetManagementNetwork),whichcreatesanoverlaynetworkofmanagementnodes.Whileeachmanagementnodecanperformmanagementtasksautonomouslyandindependently,itcanfinishmoresophisticatedmanagementtasksbycollaborativelyinvokingmanagementoperationsorsharinginformationprovidedbyothermanagementnodes.P2P-basedcommunicationservicesareintroducedinIMNtoenablesuchcollaboration.ThepaperpresentsaprototypingimplementationbasedontheWebservicerelatedtechnology,aswellassomeofthekeytechnologies,especiallysolutionstothoseissuesarisingfromthemanagementpracticeofCERNET2.ExperiencesofdeploymentofCERNET2operationandlessonslearnedfromthemanagementpracticearediscussed.