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mhyuan

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[ÇóÖú] ¹ØÓÚMPI²¢Ðбà³ÌµÄ»ù±¾ÎÊÌâ

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  Program Matrix
  Implicit None
  Integer :: I,J,K
  Integer :: A(4,4),B(4,4),C(4,4)
  Data A/1,2,3,4,5,6,7,8,9,1,2,3,4,5,6,7/
  Data B/9,8,7,6,5,4,3,2,1,9,8,7,6,5,4,3/
  Do I=1,4
    Do J=1,4
      C(I,J)=0
      Do k=1,4
        C(I,J)=C(I,J)+A(I,K)*B(K,J)
      Enddo
    Enddo
  Write(1101,*) (C(I,J),J=1,4)
  Enddo
  End

[ Last edited by mhyuan on 2011-7-11 at 21:40 ]
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xzhdty(½ð±Ò+1): »¶Ó­³£À´³ÌÐòÓïÑÔ°æÌÖÂÛ 2011-07-13 01:07:47
mhyuan(½ð±Ò+5): 2011-07-16 09:23:21
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mhyuan

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Originally posted by tsiangsun at 2011-07-12 23:48:18:
mpiÊÇcpuÖ®¼ä´«µÝÐÅÏ¢£¨Êý¾Ý£©µÄЭÒé¡£ÄãÒªÃ÷È·Ö¸¶¨Ã¿¸öcpuÒª×öʲô¼ÆË㣬²»ÊÇ˵°ÑÕâ¸ö³ÌÐò±à³Ìmpi¾ÍÐÐÁ˵ġ£

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mhyuan

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¸ÕÈëÃÅ£¬Ð´ÁËÒ»¸ö×î¼òµ¥µÄ²¢ÐгÌÐò£¨Matrix.f90£©¡£ÈçÏ£º
        Program Matrix
        Implicit None
        Include 'mpif.h'
       
        Integer :: I,J,K
        Integer :: iam,np,ierr
        integer :: status(MPI_STATUS_SIZE)
        Integer :: A(4,4),B(4,4),C(4,4)

        Call MPI_INIT(Ierr)
        Call MPI_COMM_RANK(mpi_comm_world,iam,ierr)
        Call mpi_comm_size(mpi_comm_world,np,ierr)
       
          Data A/1,2,3,4,5,6,7,8,9,1,2,3,4,5,6,7/
          Data B/9,8,7,6,5,4,3,2,1,9,8,7,6,5,4,3/
          Data C/0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0/

        Do J=1,4
          Do I=1,4
            C((iam+1),J)=C((iam+1),J)+A((iam+1),I)*B(I,J)
          Enddo
        Enddo

        If (iam==0) then
          Call MPI_Recv(c(2,1),1,MPI_Integer,1,0,mpi_comm_world,status,ierr)
          Call MPI_Recv(c(2,2),1,MPI_Integer,1,0,mpi_comm_world,status,ierr)
          Call MPI_Recv(c(2,3),1,MPI_Integer,1,0,mpi_comm_world,status,ierr)
          Call MPI_Recv(c(2,4),1,MPI_Integer,1,0,mpi_comm_world,status,ierr)

          Call MPI_Recv(c(3,1),1,MPI_Integer,2,0,mpi_comm_world,status,ierr)
          Call MPI_Recv(c(3,2),1,MPI_Integer,2,0,mpi_comm_world,status,ierr)
          Call MPI_Recv(c(3,3),1,MPI_Integer,2,0,mpi_comm_world,status,ierr)
          Call MPI_Recv(c(3,4),1,MPI_Integer,2,0,mpi_comm_world,status,ierr)

          Call MPI_Recv(c(4,1),1,MPI_Integer,3,0,mpi_comm_world,status,ierr)
          Call MPI_Recv(c(4,2),1,MPI_Integer,3,0,mpi_comm_world,status,ierr)
          Call MPI_Recv(c(4,3),1,MPI_Integer,3,0,mpi_comm_world,status,ierr)
          Call MPI_Recv(c(4,4),1,MPI_Integer,3,0,mpi_comm_world,status,ierr)
        Elseif (iam==1) then
            Call MPI_send(c(2,1),1,MPI_Integer,0,0,mpi_comm_world,ierr)
            Call MPI_send(c(2,2),1,MPI_Integer,0,0,mpi_comm_world,ierr)
            Call MPI_send(c(2,3),1,MPI_Integer,0,0,mpi_comm_world,ierr)
            Call MPI_send(c(2,4),1,MPI_Integer,0,0,mpi_comm_world,ierr)
        Elseif (iam==2) then
            Call MPI_send(c(3,1),1,MPI_Integer,0,0,mpi_comm_world,ierr)
            Call MPI_send(c(3,2),1,MPI_Integer,0,0,mpi_comm_world,ierr)
            Call MPI_send(c(3,3),1,MPI_Integer,0,0,mpi_comm_world,ierr)
            Call MPI_send(c(3,4),1,MPI_Integer,0,0,mpi_comm_world,ierr)
        Elseif (iam==3) then
            Call MPI_send(c(4,1),1,MPI_Integer,0,0,mpi_comm_world,ierr)
            Call MPI_send(c(4,2),1,MPI_Integer,0,0,mpi_comm_world,ierr)
            Call MPI_send(c(4,3),1,MPI_Integer,0,0,mpi_comm_world,ierr)
            Call MPI_send(c(4,4),1,MPI_Integer,0,0,mpi_comm_world,ierr)
        Endif

        If (iam==0) then
          Do I=1,4
            Write(1102,*) (C(I,J),J=1,4)
          Enddo
        Endif

        Call MPI_FINALIZE(ierr)
        End
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    mpif90 Matrix.f90 -o Matrix
       mpirun -np 4 ./Matrix
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         103          47          99          61
         133          61         124          79
         163          75         149          97
£¨ÓëÉÏÃæµÄ´®ÐгÌÐò½á¹û£¨fort.1101)ÍêȫһÑù£©
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