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时间:2019-11-27
《高可扩展格子Boltzmann方法.pdf》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、947:91;$;<=67Vol.47No.12017>1?AeronauticalComputingTechniqueJan.2017ñÕòó]SBoltzmannôb123455611ST,/¼U,TìV,å$W,TX,iY,Z[,þ,T](1.F;%&GHI=>J2&&5,F;200444;2.F;%&)KJKL=>&5,F;200444;3.MN%&=&5,OCMN515063;4.PQ()%&+&5,RPPQ710049;5.F;SITG,-5,F;201210;6."UVHW8!X,BCW8250101)
2、01:èBoltzmannfc(LatticeBoltzmannMethod,LBM)lv½Mÿ2^:Bfc。_4LBM2è/`Wda2è/'bMz
3、lc,dÄef2ÁLBMÁ2uhn;<Éz,vgÉz©w2xA,yzgÉz',gQ9x]Í{。8K,M4096Ù
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5、x]Í{。234:èBoltzmannfc;Á<;y}þ;MPI56.78:O2469:;<=:A9>?8:1671?654X(2017)01?0018?05InvestigationofHighScalableLatticeBoltzmannMethod12345XULei,LIUZhi?xiang,ZHANGCheng?dian,LIKai?tai,ZHANGMiao,5611CHENGPan,GUOMeng,XIEJiang,ZHANGWu(1.SchoolofComputerScience,ShanghaiUn
6、iversity,Shanghai200444,China;2.SchoolofCommunicationandInformationEngineering,ShanghaiUniversity,Shanghai200444,China;3.CollegeofEngineering,ShantouUniversity,Shantou515063,China;4.SchoolofScience,Xi′anJiaotongUniversity,Xi′an710049,China;5.ShanghaiAircraftDesi
7、gnandResearchInstitute,Shanghai201210,China;6.NationalSupercomputerCenterinJinan,Jinan250101,China)Abstract:LatticeBoltzmannmethod(LBM)isacommonlyusedmethodincomputationalfluiddynamics.SincethelatticepointsinLBMonlyhavedatatransferbetweenneighboringlatticepoint
8、s,ithasgoodparallelism.Themicroscopic(distributionfunction)isthemaincommunicationdatainparallelalgorithmofLBM.Thedistributionfunctionhasapluralityofdifferentspeeddirections.InordertofurtherreducethecommunicationoverheadoftheLBMparallelalgorithm,combinedwiththeph
9、ysicalcharacteristicsoflatticeBoltzmannmethodandserialprogram,deep?levelminedparallelfactorispresented.Acommunicationclassisdesignedbyusingtocommunicationreducingthecommunicationtimeandimprovingthespeedupandefficiency.Theexperimentalresultsshowthatthespeedupand
10、efficiencyisalsobetterthroughtheexperimentson4,096computingcores.Keywords:iatticeboltzmannmethod;parallelcomputing;scalable;MPI@ATö'ÛqZK,kN?SZ'&D×ÇtklTöÛqZK'5×,À»ÕÖ'«
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