| 1 | MODULE mod_phys_lmdz_ensemble |
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| 2 | |
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| 3 | LOGICAL,SAVE :: ensemble_management ! true if ensemble is managed |
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| 4 | ! that's mean one additionnal dimension is added to output |
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| 5 | INTEGER,SAVE :: COMM_LMDZ_PHY_ENSEMBLE ! MPI communicator for the ensemble pool |
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| 6 | INTEGER,SAVE :: whole_ensemble_size ! number of members in whole ensemble |
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| 7 | INTEGER,SAVE :: whole_ensemble_rank ! local member number in whole ensemble |
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| 8 | |
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| 9 | |
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| 10 | CONTAINS |
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| 11 | |
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| 12 | SUBROUTINE init_phys_lmdz_ensemble(ensemble_communicator, member_communicator) |
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| 13 | USE ioipsl_getin_p_mod |
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| 14 | IMPLICIT NONE |
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| 15 | INTEGER, INTENT(IN) :: ensemble_communicator ! communicator of pool ensemble |
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| 16 | INTEGER, INTENT(OUT) :: member_communicator ! returned communicator for local member |
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| 17 | INTEGER :: ensemble_comm_size |
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| 18 | INTEGER :: ensemble_comm_rank |
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| 19 | INTEGER :: ensemble_pool_rank |
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| 20 | INTEGER :: ensemble_pool_size |
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| 21 | INTEGER :: member_size |
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| 22 | INTEGER :: ensemble_rank |
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| 23 | INTEGER :: ierr |
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| 24 | |
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| 25 | !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! |
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| 26 | !! SPLIT COMMUNICATOR FOR ENSEMBLE !!! |
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| 27 | !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! |
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| 28 | COMM_LMDZ_PHY_ENSEMBLE = ensemble_communicator |
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| 29 | ensemble_pool_size = 1 |
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| 30 | CALL getin("ensemble_pool_size", ensemble_pool_size) |
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| 31 | whole_ensemble_size=ensemble_pool_size |
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| 32 | CALL getin("whole_ensemble_size", whole_ensemble_size) |
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| 33 | ensemble_management=.FALSE. |
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| 34 | IF (whole_ensemble_size>1) ensemble_management=.TRUE. |
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| 35 | ensemble_pool_rank=0 |
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| 36 | CALL getin("ensemble_pool_rank", ensemble_pool_rank) |
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| 37 | |
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| 38 | CALL MPI_COMM_SIZE(COMM_LMDZ_PHY_ENSEMBLE,ensemble_comm_size,ierr) |
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| 39 | CALL MPI_COMM_RANK(COMM_LMDZ_PHY_ENSEMBLE,ensemble_comm_rank,ierr) |
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| 40 | PRINT*,ensemble_comm_size,ensemble_comm_rank |
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| 41 | IF (MOD(ensemble_comm_size,ensemble_pool_size)/=0) THEN |
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| 42 | CALL abort_physic('Init_mpi','Nb of MPI processes in whole ensemble is not divisible by the size of ensemble',1) |
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| 43 | ENDIF |
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| 44 | member_size = ensemble_comm_size/ensemble_pool_size |
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| 45 | ensemble_rank = ensemble_comm_rank/member_size |
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| 46 | CALL MPI_COMM_SPLIT(COMM_LMDZ_PHY_ENSEMBLE, ensemble_rank, ensemble_comm_rank, member_communicator,ierr) |
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| 47 | whole_ensemble_rank = ensemble_pool_rank*ensemble_pool_size + ensemble_rank |
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| 48 | |
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| 49 | END SUBROUTINE init_phys_lmdz_ensemble |
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| 50 | |
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| 51 | |
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| 52 | END MODULE mod_phys_lmdz_ensemble |
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