| 1 | MODULE mod_ioclient_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 | INTEGER,SAVE :: iocomm |
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| 5 | INTEGER,SAVE :: iosize |
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| 6 | INTEGER,SAVE :: iorank |
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| 7 | INTEGER,SAVE :: server_rank |
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| 8 | INTEGER,SAVE :: intracomm |
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| 9 | CONTAINS |
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| 10 | |
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| 11 | |
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| 12 | SUBROUTINE Init_parallel |
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| 13 | USE mpitrace |
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| 14 | USE mod_ioserver_namelist |
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| 15 | USE mod_prism_get_comm |
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| 16 | IMPLICIT NONE |
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| 17 | INCLUDE 'mpif.h' |
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| 18 | INTEGER :: NEW_COMM |
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| 19 | INTEGER :: ierr |
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| 20 | INTEGER :: global_rank |
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| 21 | INTEGER :: global_size |
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| 22 | INTEGER :: mpi_rank |
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| 23 | INTEGER :: mpi_size |
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| 24 | INTEGER :: nb_server_io |
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| 25 | INTEGER,ALLOCATABLE :: proc_color(:) |
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| 26 | INTEGER :: i |
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| 27 | INTEGER :: div,remain |
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| 28 | INTEGER :: group_color |
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| 29 | INTEGER :: Comm_client_server |
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| 30 | CHARACTER(LEN=6) :: oasis_server_id |
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| 31 | |
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| 32 | IF (using_oasis) THEN |
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| 33 | oasis_server_id=server_id |
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| 34 | PRINT *,'prism_get_intracomm' |
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| 35 | CALL prism_get_intracomm(Comm_client_server,oasis_server_id,ierr) |
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| 36 | ELSE |
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| 37 | CALL MPI_INIT(ierr) |
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| 38 | Comm_client_server=MPI_COMM_WORLD |
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| 39 | ENDIF |
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| 40 | |
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| 41 | CALL MPI_COMM_RANK(Comm_client_server,global_rank,ierr) |
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| 42 | CALL MPI_COMM_SIZE(Comm_client_server,global_size,ierr) |
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| 43 | |
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| 44 | CALL MPI_COMM_SPLIT(Comm_client_server,color_client,global_rank,intracomm,ierr) |
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| 45 | CALL MPI_COMM_SIZE(intracomm,mpi_size,ierr) |
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| 46 | CALL MPI_COMM_RANK(intracomm,mpi_rank,ierr) |
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| 47 | |
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| 48 | nb_server_io=global_size-mpi_size |
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| 49 | div=mpi_size/nb_server_io |
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| 50 | remain=MOD(mpi_size,nb_server_io) |
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| 51 | |
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| 52 | IF (mpi_rank<remain*(div+1)) THEN |
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| 53 | group_color=mpi_rank/(div+1) |
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| 54 | ELSE |
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| 55 | group_color=(nb_server_io-1)-(mpi_size-1-mpi_rank)/div |
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| 56 | ENDIF |
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| 57 | |
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| 58 | CALL MPI_COMM_SPLIT(Comm_client_server,group_color,global_rank,iocomm,ierr) |
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| 59 | |
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| 60 | CALL MPI_COMM_SIZE(iocomm,iosize,ierr) |
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| 61 | CALL MPI_COMM_RANK(iocomm,iorank,ierr) |
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| 62 | |
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| 63 | ALLOCATE(proc_color(0:iosize-1)) |
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| 64 | CALL MPI_ALLGATHER(color_client,1,MPI_INTEGER,proc_color,1,MPI_INTEGER,iocomm,ierr) |
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| 65 | |
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| 66 | DO i=0,iosize-1 |
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| 67 | IF (proc_color(i)==color_server) THEN |
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| 68 | server_rank=i |
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| 69 | EXIT |
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| 70 | ENDIF |
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| 71 | ENDDO |
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| 72 | |
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| 73 | PRINT *,"Proces No",mpi_rank,"--> server",server_rank |
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| 74 | END SUBROUTINE Init_parallel |
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| 75 | |
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| 76 | SUBROUTINE Finalize_parallel |
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| 77 | IMPLICIT NONE |
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| 78 | include 'mpif.h' |
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| 79 | INTEGER :: ierr |
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| 80 | |
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| 81 | CALL MPI_FINALIZE(ierr) |
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| 82 | |
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| 83 | END SUBROUTINE Finalize_parallel |
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| 84 | |
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| 85 | END MODULE mod_ioclient_para |
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