[2128] | 1 | MODULE obs_mpp |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE obs_mpp *** |
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| 4 | !! Observation diagnostics: Various MPP support routines |
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| 5 | !!====================================================================== |
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[2335] | 6 | !! History : 2.0 ! 2006-03 (K. Mogensen) Original code |
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| 7 | !! - ! 2006-05 (K. Mogensen) Reformatted |
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| 8 | !! - ! 2008-01 (K. Mogensen) add mpp_global_max |
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[6140] | 9 | !! 3.6 ! 2015-01 (J. Waters) obs_mpp_find_obs_proc |
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| 10 | !! rewritten to avoid global arrays |
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[2128] | 11 | !!---------------------------------------------------------------------- |
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[2335] | 12 | # define mpivar mpi_double_precision |
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| 13 | !!---------------------------------------------------------------------- |
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| 14 | !! obs_mpp_bcast_integer : Broadcast an integer array from a processor to all processors |
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| 15 | !! obs_mpp_max_integer : Find maximum on all processors of each value in an integer on all processors |
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[6140] | 16 | !! obs_mpp_find_obs_proc : Find processors which should hold the observations, avoiding global arrays |
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[2128] | 17 | !! obs_mpp_sum_integers : Sum an integer array from all processors |
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| 18 | !! obs_mpp_sum_integer : Sum an integer from all processors |
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| 19 | !!---------------------------------------------------------------------- |
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[2335] | 20 | USE mpp_map, ONLY : mppmap |
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[2128] | 21 | USE in_out_manager |
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[14229] | 22 | #if ! defined key_mpi_off |
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[9570] | 23 | USE lib_mpp, ONLY : mpi_comm_oce ! MPP library |
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[2128] | 24 | #endif |
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| 25 | IMPLICIT NONE |
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| 26 | PRIVATE |
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| 27 | |
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[2335] | 28 | PUBLIC obs_mpp_bcast_integer, & !: Broadcast an integer array from a proc to all procs |
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| 29 | & obs_mpp_max_integer, & !: Find maximum across processors in an integer array |
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| 30 | & obs_mpp_find_obs_proc, & !: Find processors which should hold the observations |
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| 31 | & obs_mpp_sum_integers, & !: Sum an integer array from all processors |
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| 32 | & obs_mpp_sum_integer, & !: Sum an integer from all processors |
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[2128] | 33 | & mpp_alltoall_int, & |
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| 34 | & mpp_alltoallv_int, & |
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| 35 | & mpp_alltoallv_real, & |
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| 36 | & mpp_global_max |
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| 37 | |
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[2287] | 38 | !!---------------------------------------------------------------------- |
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[9598] | 39 | !! NEMO/OCE 4.0 , NEMO Consortium (2018) |
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[2287] | 40 | !! $Id$ |
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[10068] | 41 | !! Software governed by the CeCILL license (see ./LICENSE) |
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[2287] | 42 | !!---------------------------------------------------------------------- |
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[2128] | 43 | CONTAINS |
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| 44 | |
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[2335] | 45 | SUBROUTINE obs_mpp_bcast_integer( kvals, kno, kroot ) |
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[2128] | 46 | !!---------------------------------------------------------------------- |
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| 47 | !! *** ROUTINE obs_mpp_bcast_integer *** |
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| 48 | !! |
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| 49 | !! ** Purpose : Send array kvals to all processors |
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| 50 | !! |
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| 51 | !! ** Method : MPI broadcast |
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| 52 | !! |
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| 53 | !! ** Action : This does only work for MPI. |
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[9570] | 54 | !! MPI_COMM_OCE needs to be replace for OASIS4.! |
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[2128] | 55 | !! |
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| 56 | !! References : http://www.mpi-forum.org |
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[2335] | 57 | !!---------------------------------------------------------------------- |
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| 58 | INTEGER , INTENT(in ) :: kno ! Number of elements in array |
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| 59 | INTEGER , INTENT(in ) :: kroot ! Processor to send data |
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| 60 | INTEGER, DIMENSION(kno), INTENT(inout) :: kvals ! Array to send on kroot, receive for non-kroot |
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[2513] | 61 | ! |
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[14229] | 62 | #if ! defined key_mpi_off |
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[2513] | 63 | ! |
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[2363] | 64 | INTEGER :: ierr |
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[2513] | 65 | ! |
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[2249] | 66 | INCLUDE 'mpif.h' |
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[2335] | 67 | !!---------------------------------------------------------------------- |
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[2128] | 68 | |
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| 69 | ! Call the MPI library to broadcast data |
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[2335] | 70 | CALL mpi_bcast( kvals, kno, mpi_integer, & |
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[9570] | 71 | & kroot, mpi_comm_oce, ierr ) |
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[2335] | 72 | #else |
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| 73 | ! no MPI: empty routine |
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[2128] | 74 | #endif |
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[2335] | 75 | ! |
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| 76 | END SUBROUTINE obs_mpp_bcast_integer |
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[2128] | 77 | |
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[2335] | 78 | |
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[2128] | 79 | SUBROUTINE obs_mpp_max_integer( kvals, kno ) |
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| 80 | !!---------------------------------------------------------------------- |
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| 81 | !! *** ROUTINE obs_mpp_bcast_integer *** |
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| 82 | !! |
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| 83 | !! ** Purpose : Find maximum across processors in an integer array. |
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| 84 | !! |
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| 85 | !! ** Method : MPI all reduce. |
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| 86 | !! |
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| 87 | !! ** Action : This does only work for MPI. |
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| 88 | !! It does not work for SHMEM. |
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[9570] | 89 | !! MPI_COMM_OCE needs to be replace for OASIS4.! |
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[2128] | 90 | !! |
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| 91 | !! References : http://www.mpi-forum.org |
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[2335] | 92 | !!---------------------------------------------------------------------- |
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| 93 | INTEGER , INTENT(in ) :: kno ! Number of elements in array |
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| 94 | INTEGER, DIMENSION(kno), INTENT(inout) :: kvals ! Array to send on kroot, receive for non-kroot |
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[2513] | 95 | ! |
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[14229] | 96 | #if ! defined key_mpi_off |
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[2513] | 97 | ! |
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[2363] | 98 | INTEGER :: ierr |
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[2335] | 99 | INTEGER, DIMENSION(kno) :: ivals |
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[2513] | 100 | ! |
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[2249] | 101 | INCLUDE 'mpif.h' |
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[2335] | 102 | !!---------------------------------------------------------------------- |
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[2128] | 103 | |
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| 104 | ! Call the MPI library to find the maximum across processors |
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[2335] | 105 | CALL mpi_allreduce( kvals, ivals, kno, mpi_integer, & |
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[9570] | 106 | & mpi_max, mpi_comm_oce, ierr ) |
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[2128] | 107 | kvals(:) = ivals(:) |
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[2335] | 108 | #else |
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| 109 | ! no MPI: empty routine |
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[2128] | 110 | #endif |
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| 111 | END SUBROUTINE obs_mpp_max_integer |
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| 112 | |
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[2335] | 113 | |
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[6140] | 114 | SUBROUTINE obs_mpp_find_obs_proc( kobsp,kno ) |
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[2128] | 115 | !!---------------------------------------------------------------------- |
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[6140] | 116 | !! *** ROUTINE obs_mpp_find_obs_proc *** |
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| 117 | !! |
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| 118 | !! ** Purpose : From the array kobsp containing the results of the |
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[2128] | 119 | !! grid search on each processor the processor return a |
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| 120 | !! decision of which processors should hold the observation. |
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| 121 | !! |
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[6140] | 122 | !! ** Method : Synchronize the processor number for each obs using |
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| 123 | !! obs_mpp_max_integer. If an observation exists on two |
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| 124 | !! processors it will be allocated to the lower numbered |
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| 125 | !! processor. |
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[2128] | 126 | !! |
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[6140] | 127 | !! ** Action : This does only work for MPI. |
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[2128] | 128 | !! It does not work for SHMEM. |
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| 129 | !! |
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| 130 | !! References : http://www.mpi-forum.org |
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[2335] | 131 | !!---------------------------------------------------------------------- |
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| 132 | INTEGER , INTENT(in ) :: kno |
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| 133 | INTEGER, DIMENSION(kno), INTENT(inout) :: kobsp |
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[2513] | 134 | ! |
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[14229] | 135 | #if ! defined key_mpi_off |
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[2513] | 136 | ! |
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[6140] | 137 | ! |
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| 138 | INTEGER :: ji, isum |
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| 139 | INTEGER, DIMENSION(kno) :: iobsp |
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[2335] | 140 | !! |
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[6140] | 141 | !! |
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[2128] | 142 | |
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[9023] | 143 | iobsp(:)=kobsp(:) |
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[6140] | 144 | |
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| 145 | WHERE( iobsp(:) == -1 ) |
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| 146 | iobsp(:) = 9999999 |
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| 147 | END WHERE |
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| 148 | |
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[9023] | 149 | iobsp(:)=-1*iobsp(:) |
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[6140] | 150 | |
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| 151 | CALL obs_mpp_max_integer( iobsp, kno ) |
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| 152 | |
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[9023] | 153 | kobsp(:)=-1*iobsp(:) |
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[6140] | 154 | |
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| 155 | isum=0 |
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[2128] | 156 | DO ji = 1, kno |
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[6140] | 157 | IF ( kobsp(ji) == 9999999 ) THEN |
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| 158 | isum=isum+1 |
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| 159 | kobsp(ji)=-1 |
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[2128] | 160 | ENDIF |
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[6140] | 161 | ENDDO |
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[2128] | 162 | |
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| 163 | |
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[6140] | 164 | IF ( isum > 0 ) THEN |
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| 165 | IF (lwp) WRITE(numout,*) isum, ' observations failed the grid search.' |
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| 166 | IF (lwp) WRITE(numout,*)'If ln_grid_search_lookup=.TRUE., try reducing grid_search_res' |
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| 167 | ENDIF |
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| 168 | |
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[2335] | 169 | #else |
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| 170 | ! no MPI: empty routine |
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[6140] | 171 | #endif |
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| 172 | |
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[2128] | 173 | END SUBROUTINE obs_mpp_find_obs_proc |
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| 174 | |
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[2335] | 175 | |
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[2128] | 176 | SUBROUTINE obs_mpp_sum_integers( kvalsin, kvalsout, kno ) |
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| 177 | !!---------------------------------------------------------------------- |
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| 178 | !! *** ROUTINE obs_mpp_sum_integers *** |
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| 179 | !! |
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| 180 | !! ** Purpose : Sum an integer array. |
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| 181 | !! |
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| 182 | !! ** Method : MPI all reduce. |
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| 183 | !! |
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| 184 | !! ** Action : This does only work for MPI. |
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| 185 | !! It does not work for SHMEM. |
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| 186 | !! |
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| 187 | !! References : http://www.mpi-forum.org |
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[2335] | 188 | !!---------------------------------------------------------------------- |
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| 189 | INTEGER , INTENT(in ) :: kno |
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| 190 | INTEGER, DIMENSION(kno), INTENT(in ) :: kvalsin |
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| 191 | INTEGER, DIMENSION(kno), INTENT( out) :: kvalsout |
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[2513] | 192 | ! |
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[14229] | 193 | #if ! defined key_mpi_off |
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[2513] | 194 | ! |
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[2128] | 195 | INTEGER :: ierr |
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[2513] | 196 | ! |
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[2249] | 197 | INCLUDE 'mpif.h' |
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[2335] | 198 | !!---------------------------------------------------------------------- |
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| 199 | ! |
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[2128] | 200 | !----------------------------------------------------------------------- |
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| 201 | ! Call the MPI library to find the sum across processors |
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| 202 | !----------------------------------------------------------------------- |
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| 203 | CALL mpi_allreduce( kvalsin, kvalsout, kno, mpi_integer, & |
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[9570] | 204 | & mpi_sum, mpi_comm_oce, ierr ) |
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[2128] | 205 | #else |
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| 206 | !----------------------------------------------------------------------- |
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| 207 | ! For no-MPP just return input values |
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| 208 | !----------------------------------------------------------------------- |
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| 209 | kvalsout(:) = kvalsin(:) |
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| 210 | #endif |
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[2335] | 211 | ! |
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[2128] | 212 | END SUBROUTINE obs_mpp_sum_integers |
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| 213 | |
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[2335] | 214 | |
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[2128] | 215 | SUBROUTINE obs_mpp_sum_integer( kvalin, kvalout ) |
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| 216 | !!---------------------------------------------------------------------- |
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| 217 | !! *** ROUTINE obs_mpp_sum_integers *** |
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| 218 | !! |
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| 219 | !! ** Purpose : Sum a single integer |
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| 220 | !! |
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| 221 | !! ** Method : MPI all reduce. |
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| 222 | !! |
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| 223 | !! ** Action : This does only work for MPI. |
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| 224 | !! It does not work for SHMEM. |
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| 225 | !! |
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| 226 | !! References : http://www.mpi-forum.org |
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[2335] | 227 | !!---------------------------------------------------------------------- |
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| 228 | INTEGER, INTENT(in ) :: kvalin |
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| 229 | INTEGER, INTENT( out) :: kvalout |
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[2513] | 230 | ! |
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[14229] | 231 | #if ! defined key_mpi_off |
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[2513] | 232 | ! |
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[2128] | 233 | INTEGER :: ierr |
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[2513] | 234 | ! |
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[2249] | 235 | INCLUDE 'mpif.h' |
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[2335] | 236 | !!---------------------------------------------------------------------- |
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| 237 | ! |
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[2128] | 238 | !----------------------------------------------------------------------- |
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| 239 | ! Call the MPI library to find the sum across processors |
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| 240 | !----------------------------------------------------------------------- |
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[2335] | 241 | CALL mpi_allreduce( kvalin, kvalout, 1, mpi_integer, & |
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[9570] | 242 | & mpi_sum, mpi_comm_oce, ierr ) |
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[2128] | 243 | #else |
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| 244 | !----------------------------------------------------------------------- |
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| 245 | ! For no-MPP just return input values |
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| 246 | !----------------------------------------------------------------------- |
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| 247 | kvalout = kvalin |
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| 248 | #endif |
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[2335] | 249 | ! |
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[2128] | 250 | END SUBROUTINE obs_mpp_sum_integer |
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| 251 | |
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[2335] | 252 | |
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[2128] | 253 | SUBROUTINE mpp_global_max( pval ) |
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| 254 | !!---------------------------------------------------------------------- |
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| 255 | !! *** ROUTINE mpp_global_or *** |
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| 256 | !! |
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| 257 | !! ** Purpose : Get the maximum value across processors for a global |
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| 258 | !! real array |
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| 259 | !! |
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| 260 | !! ** Method : MPI allreduce |
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| 261 | !! |
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| 262 | !! ** Action : This does only work for MPI. |
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| 263 | !! It does not work for SHMEM. |
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| 264 | !! |
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| 265 | !! References : http://www.mpi-forum.org |
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[2335] | 266 | !!---------------------------------------------------------------------- |
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| 267 | REAL(KIND=wp), DIMENSION(jpiglo,jpjglo), INTENT(inout) :: pval |
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[2513] | 268 | ! |
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[2128] | 269 | INTEGER :: ierr |
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[2513] | 270 | ! |
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[14229] | 271 | #if ! defined key_mpi_off |
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[2513] | 272 | ! |
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[2249] | 273 | INCLUDE 'mpif.h' |
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[2335] | 274 | REAL(KIND=wp), DIMENSION(:,:), ALLOCATABLE :: zcp |
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| 275 | !!---------------------------------------------------------------------- |
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[2128] | 276 | |
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| 277 | ! Copy data for input to MPI |
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| 278 | |
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| 279 | ALLOCATE( & |
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| 280 | & zcp(jpiglo,jpjglo) & |
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| 281 | & ) |
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| 282 | zcp(:,:) = pval(:,:) |
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| 283 | |
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| 284 | ! Call the MPI library to find the coast lines globally |
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| 285 | |
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| 286 | CALL mpi_allreduce( zcp, pval, jpiglo*jpjglo, mpivar, & |
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[9570] | 287 | & mpi_max, mpi_comm_oce, ierr ) |
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[2128] | 288 | |
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| 289 | DEALLOCATE( & |
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| 290 | & zcp & |
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| 291 | & ) |
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| 292 | |
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[2335] | 293 | #else |
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| 294 | ! no MPI: empty routine |
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[2128] | 295 | #endif |
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[2335] | 296 | ! |
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[2128] | 297 | END SUBROUTINE mpp_global_max |
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| 298 | |
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[2335] | 299 | |
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[2128] | 300 | SUBROUTINE mpp_alltoall_int( kno, kvalsin, kvalsout ) |
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| 301 | !!---------------------------------------------------------------------- |
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| 302 | !! *** ROUTINE mpp_allgatherv *** |
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| 303 | !! |
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| 304 | !! ** Purpose : all to all. |
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| 305 | !! |
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| 306 | !! ** Method : MPI alltoall |
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| 307 | !! |
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| 308 | !! ** Action : This does only work for MPI. |
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| 309 | !! It does not work for SHMEM. |
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| 310 | !! |
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| 311 | !! References : http://www.mpi-forum.org |
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[2335] | 312 | !!---------------------------------------------------------------------- |
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| 313 | INTEGER , INTENT(in ) :: kno |
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| 314 | INTEGER, DIMENSION(kno*jpnij), INTENT(in ) :: kvalsin |
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| 315 | INTEGER, DIMENSION(kno*jpnij), INTENT( out) :: kvalsout |
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[2128] | 316 | !! |
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| 317 | INTEGER :: ierr |
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[2513] | 318 | ! |
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[14229] | 319 | #if ! defined key_mpi_off |
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[2513] | 320 | ! |
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[2249] | 321 | INCLUDE 'mpif.h' |
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[2128] | 322 | !----------------------------------------------------------------------- |
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| 323 | ! Call the MPI library to do the all to all operation of the data |
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| 324 | !----------------------------------------------------------------------- |
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| 325 | CALL mpi_alltoall( kvalsin, kno, mpi_integer, & |
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| 326 | & kvalsout, kno, mpi_integer, & |
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[9570] | 327 | & mpi_comm_oce, ierr ) |
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[2128] | 328 | #else |
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| 329 | !----------------------------------------------------------------------- |
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| 330 | ! For no-MPP just return input values |
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| 331 | !----------------------------------------------------------------------- |
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| 332 | kvalsout = kvalsin |
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| 333 | #endif |
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[2335] | 334 | ! |
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[2128] | 335 | END SUBROUTINE mpp_alltoall_int |
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| 336 | |
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[2335] | 337 | |
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| 338 | SUBROUTINE mpp_alltoallv_int( kvalsin, knoin , kinv , kvalsout, & |
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| 339 | & knoout, koutv ) |
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[2128] | 340 | !!---------------------------------------------------------------------- |
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| 341 | !! *** ROUTINE mpp_alltoallv_int *** |
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| 342 | !! |
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| 343 | !! ** Purpose : all to all (integer version). |
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| 344 | !! |
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| 345 | !! ** Method : MPI alltoall |
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| 346 | !! |
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| 347 | !! ** Action : This does only work for MPI. |
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| 348 | !! It does not work for SHMEM. |
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| 349 | !! |
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| 350 | !! References : http://www.mpi-forum.org |
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[2335] | 351 | !!---------------------------------------------------------------------- |
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| 352 | INTEGER , INTENT(in) :: knoin |
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| 353 | INTEGER , INTENT(in) :: knoout |
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| 354 | INTEGER, DIMENSION(jpnij) :: kinv, koutv |
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| 355 | INTEGER, DIMENSION(knoin) , INTENT(in ) :: kvalsin |
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| 356 | INTEGER, DIMENSION(knoout), INTENT( out) :: kvalsout |
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[2128] | 357 | !! |
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| 358 | INTEGER :: ierr |
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| 359 | INTEGER :: jproc |
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[2513] | 360 | ! |
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[14229] | 361 | #if ! defined key_mpi_off |
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[2513] | 362 | ! |
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[2249] | 363 | INCLUDE 'mpif.h' |
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[2335] | 364 | INTEGER, DIMENSION(jpnij) :: irdsp, isdsp |
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[2128] | 365 | !----------------------------------------------------------------------- |
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| 366 | ! Compute displacements |
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| 367 | !----------------------------------------------------------------------- |
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| 368 | irdsp(1) = 0 |
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| 369 | isdsp(1) = 0 |
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| 370 | DO jproc = 2, jpnij |
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| 371 | isdsp(jproc) = isdsp(jproc-1) + kinv(jproc-1) |
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| 372 | irdsp(jproc) = irdsp(jproc-1) + koutv(jproc-1) |
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| 373 | END DO |
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| 374 | !----------------------------------------------------------------------- |
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| 375 | ! Call the MPI library to do the all to all operation of the data |
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| 376 | !----------------------------------------------------------------------- |
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| 377 | CALL mpi_alltoallv( kvalsin, kinv, isdsp, mpi_integer, & |
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| 378 | & kvalsout, koutv, irdsp, mpi_integer, & |
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[9570] | 379 | & mpi_comm_oce, ierr ) |
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[2128] | 380 | #else |
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| 381 | !----------------------------------------------------------------------- |
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| 382 | ! For no-MPP just return input values |
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| 383 | !----------------------------------------------------------------------- |
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| 384 | kvalsout = kvalsin |
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| 385 | #endif |
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[2335] | 386 | ! |
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[2128] | 387 | END SUBROUTINE mpp_alltoallv_int |
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| 388 | |
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[2335] | 389 | |
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| 390 | SUBROUTINE mpp_alltoallv_real( pvalsin, knoin , kinv , pvalsout, & |
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| 391 | & knoout, koutv ) |
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[2128] | 392 | !!---------------------------------------------------------------------- |
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| 393 | !! *** ROUTINE mpp_alltoallv_real *** |
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| 394 | !! |
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| 395 | !! ** Purpose : all to all (integer version). |
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| 396 | !! |
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| 397 | !! ** Method : MPI alltoall |
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| 398 | !! |
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| 399 | !! ** Action : This does only work for MPI. |
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| 400 | !! It does not work for SHMEM. |
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| 401 | !! |
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| 402 | !! References : http://www.mpi-forum.org |
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[2335] | 403 | !!---------------------------------------------------------------------- |
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| 404 | INTEGER , INTENT(in ) :: knoin |
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| 405 | INTEGER , INTENT(in ) :: knoout |
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| 406 | INTEGER , DIMENSION(jpnij) :: kinv, koutv |
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| 407 | REAL(wp), DIMENSION(knoin) , INTENT(in ) :: pvalsin |
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| 408 | REAL(wp), DIMENSION(knoout), INTENT( out) :: pvalsout |
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[2128] | 409 | !! |
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| 410 | INTEGER :: ierr |
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| 411 | INTEGER :: jproc |
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[2513] | 412 | ! |
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[14229] | 413 | #if ! defined key_mpi_off |
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[2513] | 414 | ! |
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[2249] | 415 | INCLUDE 'mpif.h' |
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[2335] | 416 | INTEGER, DIMENSION(jpnij) :: irdsp, isdsp |
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| 417 | !!---------------------------------------------------------------------- |
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| 418 | ! |
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[2128] | 419 | !----------------------------------------------------------------------- |
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| 420 | ! Compute displacements |
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| 421 | !----------------------------------------------------------------------- |
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| 422 | irdsp(1) = 0 |
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| 423 | isdsp(1) = 0 |
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| 424 | DO jproc = 2, jpnij |
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| 425 | isdsp(jproc) = isdsp(jproc-1) + kinv(jproc-1) |
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| 426 | irdsp(jproc) = irdsp(jproc-1) + koutv(jproc-1) |
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| 427 | END DO |
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| 428 | !----------------------------------------------------------------------- |
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| 429 | ! Call the MPI library to do the all to all operation of the data |
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| 430 | !----------------------------------------------------------------------- |
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| 431 | CALL mpi_alltoallv( pvalsin, kinv, isdsp, mpivar, & |
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| 432 | & pvalsout, koutv, irdsp, mpivar, & |
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[9570] | 433 | & mpi_comm_oce, ierr ) |
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[2128] | 434 | #else |
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| 435 | !----------------------------------------------------------------------- |
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| 436 | ! For no-MPP just return input values |
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| 437 | !----------------------------------------------------------------------- |
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| 438 | pvalsout = pvalsin |
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| 439 | #endif |
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[2335] | 440 | ! |
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[2128] | 441 | END SUBROUTINE mpp_alltoallv_real |
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| 442 | |
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[2335] | 443 | !!====================================================================== |
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[2128] | 444 | END MODULE obs_mpp |
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