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 | #ifdef USE_OASIS |
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16 | USE mod_prism_get_comm |
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17 | #endif |
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18 | USE mpi_mod |
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19 | IMPLICIT NONE |
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20 | INTEGER :: NEW_COMM |
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21 | INTEGER :: ierr |
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22 | INTEGER :: global_rank |
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23 | INTEGER :: global_size |
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24 | INTEGER :: mpi_rank |
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25 | INTEGER :: mpi_size |
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26 | INTEGER :: nb_server_io |
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27 | INTEGER,ALLOCATABLE :: proc_color(:) |
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28 | INTEGER :: i |
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29 | INTEGER :: div,remain |
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30 | INTEGER :: group_color |
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31 | INTEGER :: Comm_client_server |
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32 | CHARACTER(LEN=6) :: oasis_server_id |
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33 | |
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34 | IF (using_oasis) THEN |
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35 | oasis_server_id=server_id |
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36 | PRINT *,'prism_get_intracomm' |
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37 | #ifdef USE_OASIS |
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38 | CALL prism_get_intracomm(Comm_client_server,oasis_server_id,ierr) |
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39 | #endif |
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40 | ELSE |
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41 | CALL MPI_INIT(ierr) |
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42 | Comm_client_server=MPI_COMM_WORLD |
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43 | ENDIF |
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44 | |
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45 | CALL MPI_COMM_RANK(Comm_client_server,global_rank,ierr) |
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46 | CALL MPI_COMM_SIZE(Comm_client_server,global_size,ierr) |
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47 | |
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48 | CALL MPI_COMM_SPLIT(Comm_client_server,color_client,global_rank,intracomm,ierr) |
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49 | CALL MPI_COMM_SIZE(intracomm,mpi_size,ierr) |
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50 | CALL MPI_COMM_RANK(intracomm,mpi_rank,ierr) |
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51 | |
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52 | nb_server_io=global_size-mpi_size |
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53 | div=mpi_size/nb_server_io |
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54 | remain=MOD(mpi_size,nb_server_io) |
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55 | |
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56 | IF (mpi_rank<remain*(div+1)) THEN |
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57 | group_color=mpi_rank/(div+1) |
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58 | ELSE |
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59 | group_color=(nb_server_io-1)-(mpi_size-1-mpi_rank)/div |
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60 | ENDIF |
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61 | |
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62 | CALL MPI_COMM_SPLIT(Comm_client_server,group_color,global_rank,iocomm,ierr) |
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63 | |
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64 | CALL MPI_COMM_SIZE(iocomm,iosize,ierr) |
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65 | CALL MPI_COMM_RANK(iocomm,iorank,ierr) |
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66 | |
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67 | ALLOCATE(proc_color(0:iosize-1)) |
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68 | CALL MPI_ALLGATHER(color_client,1,MPI_INTEGER,proc_color,1,MPI_INTEGER,iocomm,ierr) |
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69 | |
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70 | DO i=0,iosize-1 |
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71 | IF (proc_color(i)==color_server) THEN |
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72 | server_rank=i |
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73 | EXIT |
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74 | ENDIF |
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75 | ENDDO |
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76 | |
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77 | PRINT *,"Proces No",mpi_rank,"--> server",server_rank |
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78 | END SUBROUTINE Init_parallel |
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79 | |
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80 | SUBROUTINE Finalize_parallel |
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81 | USE mpi_mod |
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82 | IMPLICIT NONE |
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83 | INTEGER :: ierr |
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84 | |
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85 | CALL MPI_FINALIZE(ierr) |
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86 | |
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87 | END SUBROUTINE Finalize_parallel |
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88 | |
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89 | END MODULE mod_ioclient_para |
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