[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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[11202] | 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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[11202] | 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 dom_oce, ONLY : nproc, mig, mjg ! Ocean space and time domain variables |
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| 21 | USE mpp_map, ONLY : mppmap |
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[2128] | 22 | USE in_out_manager |
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| 23 | #if defined key_mpp_mpi |
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[2335] | 24 | USE lib_mpp, ONLY : mpi_comm_opa ! MPP library |
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[2128] | 25 | #endif |
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| 26 | IMPLICIT NONE |
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| 27 | PRIVATE |
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| 28 | |
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[2335] | 29 | PUBLIC obs_mpp_bcast_integer, & !: Broadcast an integer array from a proc to all procs |
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| 30 | & obs_mpp_max_integer, & !: Find maximum across processors in an integer array |
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| 31 | & obs_mpp_find_obs_proc, & !: Find processors which should hold the observations |
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| 32 | & obs_mpp_sum_integers, & !: Sum an integer array from all processors |
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| 33 | & obs_mpp_sum_integer, & !: Sum an integer from all processors |
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[2128] | 34 | & mpp_alltoall_int, & |
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| 35 | & mpp_alltoallv_int, & |
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| 36 | & mpp_alltoallv_real, & |
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| 37 | & mpp_global_max |
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| 38 | |
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[2287] | 39 | !!---------------------------------------------------------------------- |
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| 40 | !! NEMO/OPA 3.3 , NEMO Consortium (2010) |
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| 41 | !! $Id$ |
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[2335] | 42 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
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[2287] | 43 | !!---------------------------------------------------------------------- |
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[2128] | 44 | CONTAINS |
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| 45 | |
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[2335] | 46 | SUBROUTINE obs_mpp_bcast_integer( kvals, kno, kroot ) |
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[2128] | 47 | !!---------------------------------------------------------------------- |
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| 48 | !! *** ROUTINE obs_mpp_bcast_integer *** |
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| 49 | !! |
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| 50 | !! ** Purpose : Send array kvals to all processors |
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| 51 | !! |
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| 52 | !! ** Method : MPI broadcast |
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| 53 | !! |
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| 54 | !! ** Action : This does only work for MPI. |
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| 55 | !! MPI_COMM_OPA needs to be replace for OASIS4.! |
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| 56 | !! |
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| 57 | !! References : http://www.mpi-forum.org |
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[2335] | 58 | !!---------------------------------------------------------------------- |
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| 59 | INTEGER , INTENT(in ) :: kno ! Number of elements in array |
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| 60 | INTEGER , INTENT(in ) :: kroot ! Processor to send data |
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| 61 | INTEGER, DIMENSION(kno), INTENT(inout) :: kvals ! Array to send on kroot, receive for non-kroot |
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[2513] | 62 | ! |
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[2128] | 63 | #if defined key_mpp_mpi |
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[2513] | 64 | ! |
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[2363] | 65 | INTEGER :: ierr |
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[2513] | 66 | ! |
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[2249] | 67 | INCLUDE 'mpif.h' |
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[2335] | 68 | !!---------------------------------------------------------------------- |
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[2128] | 69 | |
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| 70 | ! Call the MPI library to broadcast data |
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[2335] | 71 | CALL mpi_bcast( kvals, kno, mpi_integer, & |
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[2128] | 72 | & kroot, mpi_comm_opa, ierr ) |
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[2335] | 73 | #else |
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| 74 | ! no MPI: empty routine |
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[2128] | 75 | #endif |
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[2335] | 76 | ! |
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| 77 | END SUBROUTINE obs_mpp_bcast_integer |
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[2128] | 78 | |
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[2335] | 79 | |
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[2128] | 80 | SUBROUTINE obs_mpp_max_integer( kvals, kno ) |
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| 81 | !!---------------------------------------------------------------------- |
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| 82 | !! *** ROUTINE obs_mpp_bcast_integer *** |
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| 83 | !! |
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| 84 | !! ** Purpose : Find maximum across processors in an integer array. |
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| 85 | !! |
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| 86 | !! ** Method : MPI all reduce. |
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| 87 | !! |
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| 88 | !! ** Action : This does only work for MPI. |
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| 89 | !! It does not work for SHMEM. |
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| 90 | !! MPI_COMM_OPA needs to be replace for OASIS4.! |
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| 91 | !! |
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| 92 | !! References : http://www.mpi-forum.org |
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[2335] | 93 | !!---------------------------------------------------------------------- |
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| 94 | INTEGER , INTENT(in ) :: kno ! Number of elements in array |
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| 95 | INTEGER, DIMENSION(kno), INTENT(inout) :: kvals ! Array to send on kroot, receive for non-kroot |
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[2513] | 96 | ! |
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[2128] | 97 | #if defined key_mpp_mpi |
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[2513] | 98 | ! |
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[2363] | 99 | INTEGER :: ierr |
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[11202] | 100 | INTEGER, DIMENSION(:), ALLOCATABLE :: ivals |
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[2513] | 101 | ! |
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[2249] | 102 | INCLUDE 'mpif.h' |
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[2335] | 103 | !!---------------------------------------------------------------------- |
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[2128] | 104 | |
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[11202] | 105 | ALLOCATE( ivals(kno) ) |
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| 106 | |
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[2128] | 107 | ! Call the MPI library to find the maximum across processors |
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[2335] | 108 | CALL mpi_allreduce( kvals, ivals, kno, mpi_integer, & |
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[2128] | 109 | & mpi_max, mpi_comm_opa, ierr ) |
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| 110 | kvals(:) = ivals(:) |
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[11202] | 111 | |
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| 112 | DEALLOCATE( ivals ) |
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[2335] | 113 | #else |
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| 114 | ! no MPI: empty routine |
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[2128] | 115 | #endif |
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| 116 | END SUBROUTINE obs_mpp_max_integer |
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| 117 | |
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[2335] | 118 | |
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[11202] | 119 | SUBROUTINE obs_mpp_find_obs_proc( kobsp,kno ) |
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[2128] | 120 | !!---------------------------------------------------------------------- |
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[11202] | 121 | !! *** ROUTINE obs_mpp_find_obs_proc *** |
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| 122 | !! |
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| 123 | !! ** Purpose : From the array kobsp containing the results of the |
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[2128] | 124 | !! grid search on each processor the processor return a |
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| 125 | !! decision of which processors should hold the observation. |
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| 126 | !! |
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[11202] | 127 | !! ** Method : Synchronize the processor number for each obs using |
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| 128 | !! obs_mpp_max_integer. If an observation exists on two |
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| 129 | !! processors it will be allocated to the lower numbered |
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| 130 | !! processor. |
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[2128] | 131 | !! |
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[11202] | 132 | !! ** Action : This does only work for MPI. |
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[2128] | 133 | !! It does not work for SHMEM. |
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| 134 | !! |
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| 135 | !! References : http://www.mpi-forum.org |
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[2335] | 136 | !!---------------------------------------------------------------------- |
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| 137 | INTEGER , INTENT(in ) :: kno |
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| 138 | INTEGER, DIMENSION(kno), INTENT(inout) :: kobsp |
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[2513] | 139 | ! |
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[2128] | 140 | #if defined key_mpp_mpi |
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[2513] | 141 | ! |
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[11202] | 142 | ! |
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| 143 | INTEGER :: ji, isum |
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| 144 | INTEGER, DIMENSION(:), ALLOCATABLE :: iobsp |
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[2335] | 145 | !! |
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[11202] | 146 | !! |
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[2128] | 147 | |
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[11202] | 148 | ALLOCATE( iobsp(kno) ) |
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| 149 | |
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| 150 | iobsp(:)=kobsp(:) |
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| 151 | |
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| 152 | WHERE( iobsp(:) == -1 ) |
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| 153 | iobsp(:) = 9999999 |
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| 154 | END WHERE |
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| 155 | |
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| 156 | iobsp(:)=-1*iobsp(:) |
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| 157 | |
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| 158 | CALL obs_mpp_max_integer( iobsp, kno ) |
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| 159 | |
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| 160 | kobsp(:)=-1*iobsp(:) |
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| 161 | |
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| 162 | isum=0 |
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[2128] | 163 | DO ji = 1, kno |
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[11202] | 164 | IF ( kobsp(ji) == 9999999 ) THEN |
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| 165 | isum=isum+1 |
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| 166 | kobsp(ji)=-1 |
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[2128] | 167 | ENDIF |
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[11202] | 168 | ENDDO |
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[2128] | 169 | |
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| 170 | |
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[11202] | 171 | IF ( isum > 0 ) THEN |
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| 172 | IF (lwp) WRITE(numout,*) isum, ' observations failed the grid search.' |
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| 173 | IF (lwp) WRITE(numout,*)'If ln_grid_search_lookup=.TRUE., try reducing grid_search_res' |
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| 174 | ENDIF |
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| 175 | |
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[2128] | 176 | DEALLOCATE( iobsp ) |
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[11202] | 177 | |
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[2335] | 178 | #else |
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| 179 | ! no MPI: empty routine |
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[11202] | 180 | #endif |
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| 181 | |
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[2128] | 182 | END SUBROUTINE obs_mpp_find_obs_proc |
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| 183 | |
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[2335] | 184 | |
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[2128] | 185 | SUBROUTINE obs_mpp_sum_integers( kvalsin, kvalsout, kno ) |
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| 186 | !!---------------------------------------------------------------------- |
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| 187 | !! *** ROUTINE obs_mpp_sum_integers *** |
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| 188 | !! |
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| 189 | !! ** Purpose : Sum an integer array. |
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| 190 | !! |
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| 191 | !! ** Method : MPI all reduce. |
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| 192 | !! |
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| 193 | !! ** Action : This does only work for MPI. |
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| 194 | !! It does not work for SHMEM. |
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| 195 | !! |
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| 196 | !! References : http://www.mpi-forum.org |
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[2335] | 197 | !!---------------------------------------------------------------------- |
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| 198 | INTEGER , INTENT(in ) :: kno |
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| 199 | INTEGER, DIMENSION(kno), INTENT(in ) :: kvalsin |
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| 200 | INTEGER, DIMENSION(kno), INTENT( out) :: kvalsout |
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[2513] | 201 | ! |
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[2128] | 202 | #if defined key_mpp_mpi |
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[2513] | 203 | ! |
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[2128] | 204 | INTEGER :: ierr |
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[2513] | 205 | ! |
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[2249] | 206 | INCLUDE 'mpif.h' |
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[2335] | 207 | !!---------------------------------------------------------------------- |
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| 208 | ! |
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[2128] | 209 | !----------------------------------------------------------------------- |
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| 210 | ! Call the MPI library to find the sum across processors |
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| 211 | !----------------------------------------------------------------------- |
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| 212 | CALL mpi_allreduce( kvalsin, kvalsout, kno, mpi_integer, & |
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| 213 | & mpi_sum, mpi_comm_opa, ierr ) |
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| 214 | #else |
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| 215 | !----------------------------------------------------------------------- |
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| 216 | ! For no-MPP just return input values |
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| 217 | !----------------------------------------------------------------------- |
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| 218 | kvalsout(:) = kvalsin(:) |
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| 219 | #endif |
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[2335] | 220 | ! |
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[2128] | 221 | END SUBROUTINE obs_mpp_sum_integers |
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| 222 | |
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[2335] | 223 | |
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[2128] | 224 | SUBROUTINE obs_mpp_sum_integer( kvalin, kvalout ) |
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| 225 | !!---------------------------------------------------------------------- |
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| 226 | !! *** ROUTINE obs_mpp_sum_integers *** |
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| 227 | !! |
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| 228 | !! ** Purpose : Sum a single integer |
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| 229 | !! |
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| 230 | !! ** Method : MPI all reduce. |
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| 231 | !! |
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| 232 | !! ** Action : This does only work for MPI. |
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| 233 | !! It does not work for SHMEM. |
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| 234 | !! |
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| 235 | !! References : http://www.mpi-forum.org |
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[2335] | 236 | !!---------------------------------------------------------------------- |
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| 237 | INTEGER, INTENT(in ) :: kvalin |
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| 238 | INTEGER, INTENT( out) :: kvalout |
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[2513] | 239 | ! |
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[2128] | 240 | #if defined key_mpp_mpi |
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[2513] | 241 | ! |
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[2128] | 242 | INTEGER :: ierr |
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[2513] | 243 | ! |
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[2249] | 244 | INCLUDE 'mpif.h' |
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[2335] | 245 | !!---------------------------------------------------------------------- |
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| 246 | ! |
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[2128] | 247 | !----------------------------------------------------------------------- |
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| 248 | ! Call the MPI library to find the sum across processors |
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| 249 | !----------------------------------------------------------------------- |
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[2335] | 250 | CALL mpi_allreduce( kvalin, kvalout, 1, mpi_integer, & |
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[2128] | 251 | & mpi_sum, mpi_comm_opa, ierr ) |
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| 252 | #else |
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| 253 | !----------------------------------------------------------------------- |
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| 254 | ! For no-MPP just return input values |
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| 255 | !----------------------------------------------------------------------- |
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| 256 | kvalout = kvalin |
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| 257 | #endif |
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[2335] | 258 | ! |
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[2128] | 259 | END SUBROUTINE obs_mpp_sum_integer |
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| 260 | |
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[2335] | 261 | |
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[2128] | 262 | SUBROUTINE mpp_global_max( pval ) |
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| 263 | !!---------------------------------------------------------------------- |
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| 264 | !! *** ROUTINE mpp_global_or *** |
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| 265 | !! |
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| 266 | !! ** Purpose : Get the maximum value across processors for a global |
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| 267 | !! real array |
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| 268 | !! |
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| 269 | !! ** Method : MPI allreduce |
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| 270 | !! |
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| 271 | !! ** Action : This does only work for MPI. |
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| 272 | !! It does not work for SHMEM. |
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| 273 | !! |
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| 274 | !! References : http://www.mpi-forum.org |
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[2335] | 275 | !!---------------------------------------------------------------------- |
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| 276 | REAL(KIND=wp), DIMENSION(jpiglo,jpjglo), INTENT(inout) :: pval |
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[2513] | 277 | ! |
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[2128] | 278 | INTEGER :: ierr |
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[2513] | 279 | ! |
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[2128] | 280 | #if defined key_mpp_mpi |
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[2513] | 281 | ! |
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[2249] | 282 | INCLUDE 'mpif.h' |
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[2335] | 283 | REAL(KIND=wp), DIMENSION(:,:), ALLOCATABLE :: zcp |
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| 284 | !!---------------------------------------------------------------------- |
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[2128] | 285 | |
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| 286 | ! Copy data for input to MPI |
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| 287 | |
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| 288 | ALLOCATE( & |
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| 289 | & zcp(jpiglo,jpjglo) & |
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| 290 | & ) |
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| 291 | zcp(:,:) = pval(:,:) |
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| 292 | |
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| 293 | ! Call the MPI library to find the coast lines globally |
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| 294 | |
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| 295 | CALL mpi_allreduce( zcp, pval, jpiglo*jpjglo, mpivar, & |
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| 296 | & mpi_max, mpi_comm_opa, ierr ) |
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| 297 | |
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| 298 | DEALLOCATE( & |
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| 299 | & zcp & |
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| 300 | & ) |
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| 301 | |
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[2335] | 302 | #else |
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| 303 | ! no MPI: empty routine |
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[2128] | 304 | #endif |
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[2335] | 305 | ! |
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[2128] | 306 | END SUBROUTINE mpp_global_max |
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| 307 | |
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[2335] | 308 | |
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[2128] | 309 | SUBROUTINE mpp_alltoall_int( kno, kvalsin, kvalsout ) |
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| 310 | !!---------------------------------------------------------------------- |
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| 311 | !! *** ROUTINE mpp_allgatherv *** |
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| 312 | !! |
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| 313 | !! ** Purpose : all to all. |
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| 314 | !! |
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| 315 | !! ** Method : MPI alltoall |
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| 316 | !! |
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| 317 | !! ** Action : This does only work for MPI. |
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| 318 | !! It does not work for SHMEM. |
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| 319 | !! |
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| 320 | !! References : http://www.mpi-forum.org |
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[2335] | 321 | !!---------------------------------------------------------------------- |
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| 322 | INTEGER , INTENT(in ) :: kno |
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| 323 | INTEGER, DIMENSION(kno*jpnij), INTENT(in ) :: kvalsin |
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| 324 | INTEGER, DIMENSION(kno*jpnij), INTENT( out) :: kvalsout |
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[2128] | 325 | !! |
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| 326 | INTEGER :: ierr |
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[2513] | 327 | ! |
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[2128] | 328 | #if defined key_mpp_mpi |
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[2513] | 329 | ! |
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[2249] | 330 | INCLUDE 'mpif.h' |
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[2128] | 331 | !----------------------------------------------------------------------- |
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| 332 | ! Call the MPI library to do the all to all operation of the data |
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| 333 | !----------------------------------------------------------------------- |
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| 334 | CALL mpi_alltoall( kvalsin, kno, mpi_integer, & |
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| 335 | & kvalsout, kno, mpi_integer, & |
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| 336 | & mpi_comm_opa, ierr ) |
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| 337 | #else |
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| 338 | !----------------------------------------------------------------------- |
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| 339 | ! For no-MPP just return input values |
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| 340 | !----------------------------------------------------------------------- |
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| 341 | kvalsout = kvalsin |
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| 342 | #endif |
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[2335] | 343 | ! |
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[2128] | 344 | END SUBROUTINE mpp_alltoall_int |
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| 345 | |
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[2335] | 346 | |
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| 347 | SUBROUTINE mpp_alltoallv_int( kvalsin, knoin , kinv , kvalsout, & |
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| 348 | & knoout, koutv ) |
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[2128] | 349 | !!---------------------------------------------------------------------- |
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| 350 | !! *** ROUTINE mpp_alltoallv_int *** |
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| 351 | !! |
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| 352 | !! ** Purpose : all to all (integer version). |
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| 353 | !! |
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| 354 | !! ** Method : MPI alltoall |
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| 355 | !! |
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| 356 | !! ** Action : This does only work for MPI. |
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| 357 | !! It does not work for SHMEM. |
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| 358 | !! |
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| 359 | !! References : http://www.mpi-forum.org |
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[2335] | 360 | !!---------------------------------------------------------------------- |
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| 361 | INTEGER , INTENT(in) :: knoin |
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| 362 | INTEGER , INTENT(in) :: knoout |
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| 363 | INTEGER, DIMENSION(jpnij) :: kinv, koutv |
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| 364 | INTEGER, DIMENSION(knoin) , INTENT(in ) :: kvalsin |
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| 365 | INTEGER, DIMENSION(knoout), INTENT( out) :: kvalsout |
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[2128] | 366 | !! |
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| 367 | INTEGER :: ierr |
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| 368 | INTEGER :: jproc |
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[2513] | 369 | ! |
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[2128] | 370 | #if defined key_mpp_mpi |
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[2513] | 371 | ! |
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[2249] | 372 | INCLUDE 'mpif.h' |
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[2335] | 373 | INTEGER, DIMENSION(jpnij) :: irdsp, isdsp |
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[2128] | 374 | !----------------------------------------------------------------------- |
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| 375 | ! Compute displacements |
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| 376 | !----------------------------------------------------------------------- |
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| 377 | irdsp(1) = 0 |
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| 378 | isdsp(1) = 0 |
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| 379 | DO jproc = 2, jpnij |
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| 380 | isdsp(jproc) = isdsp(jproc-1) + kinv(jproc-1) |
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| 381 | irdsp(jproc) = irdsp(jproc-1) + koutv(jproc-1) |
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| 382 | END DO |
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| 383 | !----------------------------------------------------------------------- |
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| 384 | ! Call the MPI library to do the all to all operation of the data |
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| 385 | !----------------------------------------------------------------------- |
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| 386 | CALL mpi_alltoallv( kvalsin, kinv, isdsp, mpi_integer, & |
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| 387 | & kvalsout, koutv, irdsp, mpi_integer, & |
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| 388 | & mpi_comm_opa, ierr ) |
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| 389 | #else |
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| 390 | !----------------------------------------------------------------------- |
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| 391 | ! For no-MPP just return input values |
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| 392 | !----------------------------------------------------------------------- |
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| 393 | kvalsout = kvalsin |
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| 394 | #endif |
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[2335] | 395 | ! |
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[2128] | 396 | END SUBROUTINE mpp_alltoallv_int |
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| 397 | |
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[2335] | 398 | |
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| 399 | SUBROUTINE mpp_alltoallv_real( pvalsin, knoin , kinv , pvalsout, & |
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| 400 | & knoout, koutv ) |
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[2128] | 401 | !!---------------------------------------------------------------------- |
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| 402 | !! *** ROUTINE mpp_alltoallv_real *** |
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| 403 | !! |
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| 404 | !! ** Purpose : all to all (integer version). |
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| 405 | !! |
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| 406 | !! ** Method : MPI alltoall |
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| 407 | !! |
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| 408 | !! ** Action : This does only work for MPI. |
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| 409 | !! It does not work for SHMEM. |
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| 410 | !! |
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| 411 | !! References : http://www.mpi-forum.org |
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[2335] | 412 | !!---------------------------------------------------------------------- |
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| 413 | INTEGER , INTENT(in ) :: knoin |
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| 414 | INTEGER , INTENT(in ) :: knoout |
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| 415 | INTEGER , DIMENSION(jpnij) :: kinv, koutv |
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| 416 | REAL(wp), DIMENSION(knoin) , INTENT(in ) :: pvalsin |
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| 417 | REAL(wp), DIMENSION(knoout), INTENT( out) :: pvalsout |
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[2128] | 418 | !! |
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| 419 | INTEGER :: ierr |
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| 420 | INTEGER :: jproc |
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[2513] | 421 | ! |
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[2128] | 422 | #if defined key_mpp_mpi |
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[2513] | 423 | ! |
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[2249] | 424 | INCLUDE 'mpif.h' |
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[2335] | 425 | INTEGER, DIMENSION(jpnij) :: irdsp, isdsp |
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| 426 | !!---------------------------------------------------------------------- |
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| 427 | ! |
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[2128] | 428 | !----------------------------------------------------------------------- |
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| 429 | ! Compute displacements |
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| 430 | !----------------------------------------------------------------------- |
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| 431 | irdsp(1) = 0 |
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| 432 | isdsp(1) = 0 |
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| 433 | DO jproc = 2, jpnij |
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| 434 | isdsp(jproc) = isdsp(jproc-1) + kinv(jproc-1) |
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| 435 | irdsp(jproc) = irdsp(jproc-1) + koutv(jproc-1) |
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| 436 | END DO |
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| 437 | !----------------------------------------------------------------------- |
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| 438 | ! Call the MPI library to do the all to all operation of the data |
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| 439 | !----------------------------------------------------------------------- |
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| 440 | CALL mpi_alltoallv( pvalsin, kinv, isdsp, mpivar, & |
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| 441 | & pvalsout, koutv, irdsp, mpivar, & |
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| 442 | & mpi_comm_opa, ierr ) |
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| 443 | #else |
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| 444 | !----------------------------------------------------------------------- |
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| 445 | ! For no-MPP just return input values |
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| 446 | !----------------------------------------------------------------------- |
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| 447 | pvalsout = pvalsin |
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| 448 | #endif |
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[2335] | 449 | ! |
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[2128] | 450 | END SUBROUTINE mpp_alltoallv_real |
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| 451 | |
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[2335] | 452 | !!====================================================================== |
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[2128] | 453 | END MODULE obs_mpp |
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