Message Passing Programming with MPI.ppt

MessagePassingProgrammingwithMPIIntroductiontoMPIBasicMPIfunctionsMostoftheMPImaterialsareobtainedfromWilliamGroppandRustyLusk’sMPItutorialat/mpi/tutorial/MessagePassingInterface(MPI))MPIprogram=C/Fortranprogram+(e.)(collaborative)processesarerunningallthetime.‘mpirun–machinefilemachines–’?,#include""#include<>intmain(intargc,char*argv[]){MPI_Init(&argc,&argv);printf("Helloworld\n");MPI_Finalize();return0;},C++,piling,linkingandrunningMPIprogramsMPICHisinstalledonlinprogTorunaMPIprogram,dothefollowing:‘secretword=cluster’Createafile‘hosts’‘mpdboot–n3–fhosts’Checkifthesystemiscorrectedsetup:‘piletheprogram:‘’Runtheprogram:mpiexec–machinefilehostmap–-n4saysrunningtheprogramwith4processe