| 1 | MODULE mod_ioserver_para |
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| 2 | INTEGER,PARAMETER :: color_client=1 |
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| 3 | INTEGER,PARAMETER :: color_server=2 |
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| 4 | |
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| 5 | INTEGER,SAVE :: iocomm |
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| 6 | INTEGER,SAVE :: iosize |
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| 7 | INTEGER,SAVE :: iorank |
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| 8 | |
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| 9 | INTEGER,SAVE :: mpi_rank |
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| 10 | INTEGER,SAVE :: mpi_size |
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| 11 | INTEGER,SAVE :: mpi_master |
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| 12 | LOGICAL,SAVE :: is_mpi_master |
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| 13 | |
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| 14 | INTEGER,SAVE :: nb_client |
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| 15 | INTEGER,ALLOCATABLE,SAVE :: client_rank(:) |
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| 16 | INTEGER,SAVE :: intracomm |
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| 17 | CONTAINS |
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| 18 | |
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| 19 | |
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| 20 | SUBROUTINE Init_parallel |
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| 21 | USE mpitrace |
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| 22 | IMPLICIT NONE |
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| 23 | INCLUDE 'mpif.h' |
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| 24 | INTEGER :: ierr |
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| 25 | INTEGER :: global_rank |
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| 26 | INTEGER :: global_size |
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| 27 | INTEGER,ALLOCATABLE :: proc_color(:) |
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| 28 | INTEGER :: i |
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| 29 | INTEGER :: group_color |
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| 30 | |
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| 31 | CALL MPI_INIT(ierr) |
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| 32 | CALL MPI_COMM_RANK(MPI_COMM_WORLD,global_rank,ierr) |
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| 33 | CALL MPI_COMM_SIZE(MPI_COMM_WORLD,global_size,ierr) |
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| 34 | |
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| 35 | CALL MPI_COMM_SPLIT(MPI_COMM_WORLD,color_server,global_rank,intracomm,ierr) |
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| 36 | CALL MPI_COMM_SIZE(intracomm,mpi_size,ierr) |
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| 37 | CALL MPI_COMM_RANK(intracomm,mpi_rank,ierr) |
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| 38 | |
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| 39 | group_color=mpi_rank |
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| 40 | PRINT *,'group_color',group_color |
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| 41 | |
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| 42 | CALL MPI_COMM_SPLIT(MPI_COMM_WORLD,group_color,global_rank,iocomm,ierr) |
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| 43 | |
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| 44 | CALL MPI_COMM_SIZE(iocomm,iosize,ierr) |
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| 45 | CALL MPI_COMM_RANK(iocomm,iorank,ierr) |
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| 46 | |
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| 47 | PRINT *,"io_size-> ",iosize,"iorank-> ",iorank |
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| 48 | |
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| 49 | ALLOCATE(proc_color(0:iosize-1)) |
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| 50 | CALL MPI_ALLGATHER(color_server,1,MPI_INTEGER,proc_color,1,MPI_INTEGER,iocomm,ierr) |
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| 51 | print *,"proc_color -> ",proc_color |
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| 52 | |
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| 53 | ALLOCATE(client_rank(iosize-1)) |
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| 54 | nb_client=0 |
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| 55 | DO i=0,iosize-1 |
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| 56 | IF (proc_color(i)==color_client) THEN |
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| 57 | nb_client=nb_client+1 |
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| 58 | client_rank(nb_client)=i |
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| 59 | ENDIF |
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| 60 | ENDDO |
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| 61 | |
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| 62 | PRINT *,"Proces No",mpi_rank,"--> client ",client_rank |
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| 63 | END SUBROUTINE Init_parallel |
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| 64 | |
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| 65 | SUBROUTINE Finalize_parallel |
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| 66 | IMPLICIT NONE |
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| 67 | include 'mpif.h' |
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| 68 | INTEGER :: ierr |
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| 69 | |
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| 70 | CALL MPI_FINALIZE(ierr) |
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| 71 | |
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| 72 | END SUBROUTINE Finalize_parallel |
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| 73 | |
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| 74 | END MODULE mod_ioserver_para |
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