| 1 | #if defined key_mpp_mpi |
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| 2 | #if defined key_sp |
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| 3 | #define mpivar mpi_real |
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| 4 | #else |
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| 5 | #define mpivar mpi_double_precision |
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| 6 | #endif |
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| 7 | #endif |
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| 8 | MODULE mppallgatherv |
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| 9 | !!====================================================================== |
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| 10 | !! *** MODULE mppallgatherv *** |
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| 11 | !! NEMO: MPP allgatherv routines |
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| 12 | !!====================================================================== |
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| 13 | |
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| 14 | !!---------------------------------------------------------------------- |
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| 15 | !! mpp_gatherv : Gather a real array on all processors |
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| 16 | !!---------------------------------------------------------------------- |
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| 17 | !! * Modules used |
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| 18 | USE par_kind, ONLY : & ! Precision variables |
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| 19 | & wp |
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| 20 | USE par_oce, ONLY : & ! Ocean parameters |
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| 21 | & jpnij |
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| 22 | #if defined key_mpp_mpi |
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| 23 | USE lib_mpp, ONLY : & ! MPP library |
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| 24 | & mpi_comm_opa |
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| 25 | #endif |
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| 26 | |
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| 27 | IMPLICIT NONE |
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| 28 | |
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| 29 | !! * Routine accessibility |
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| 30 | PRIVATE |
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| 31 | |
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| 32 | PUBLIC & |
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| 33 | & mpp_allgatherv |
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| 34 | |
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| 35 | INTERFACE mpp_allgatherv |
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| 36 | MODULE PROCEDURE mpp_allgatherv_real, mpp_allgatherv_int |
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| 37 | END INTERFACE |
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| 38 | CONTAINS |
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| 39 | |
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| 40 | SUBROUTINE mpp_allgatherv_real( pvalsin, knoin, pvalsout, ksizeout, & |
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| 41 | & knoout, kstartout ) |
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| 42 | !!---------------------------------------------------------------------- |
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| 43 | !! *** ROUTINE mpp_allgatherv_real *** |
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| 44 | !! |
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| 45 | !! ** Purpose : Gather a real array on all processors |
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| 46 | !! |
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| 47 | !! ** Method : MPI all gatherv |
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| 48 | !! |
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| 49 | !! ** Action : This does only work for MPI. |
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| 50 | !! It does not work for SHMEM. |
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| 51 | !! |
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| 52 | !! References : http://www.mpi-forum.org |
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| 53 | !! |
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| 54 | !! History : |
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| 55 | !! ! 08-08 (K. Mogensen) Original code |
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| 56 | !!---------------------------------------------------------------------- |
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| 57 | |
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| 58 | !! * Arguments |
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| 59 | INTEGER, INTENT(IN) :: & |
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| 60 | & knoin, & |
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| 61 | & ksizeout |
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| 62 | REAL(wp), DIMENSION(knoin), INTENT(IN) :: & |
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| 63 | & pvalsin |
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| 64 | REAL(wp), DIMENSION(ksizeout), INTENT(OUT) :: & |
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| 65 | & pvalsout |
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| 66 | INTEGER, DIMENSION(jpnij), INTENT(OUT) :: & |
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| 67 | & kstartout, & |
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| 68 | & knoout |
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| 69 | |
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| 70 | !! * Local declarations |
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| 71 | INTEGER :: & |
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| 72 | & ierr |
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| 73 | #if defined key_mpp_mpi |
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| 74 | #include <mpif.h> |
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| 75 | INTEGER, DIMENSION(jpnij) :: & |
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| 76 | & idispl |
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| 77 | INTEGER :: & |
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| 78 | & ji |
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| 79 | !----------------------------------------------------------------------- |
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| 80 | ! Call the MPI library to get number of data per processor |
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| 81 | !----------------------------------------------------------------------- |
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| 82 | CALL mpi_allgather( knoin, 1, mpi_integer, & |
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| 83 | & knoout, 1, mpi_integer, & |
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| 84 | & mpi_comm_opa, ierr ) |
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| 85 | !----------------------------------------------------------------------- |
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| 86 | ! Compute starts of each processors contribution |
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| 87 | !----------------------------------------------------------------------- |
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| 88 | kstartout(1) = 0 |
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| 89 | DO ji = 2, jpnij |
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| 90 | kstartout(ji) = kstartout(ji-1) + knoout(ji-1) |
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| 91 | ENDDO |
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| 92 | !----------------------------------------------------------------------- |
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| 93 | ! Call the MPI library to do the gathering of the data |
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| 94 | !----------------------------------------------------------------------- |
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| 95 | CALL mpi_allgatherv( pvalsin, knoin, mpivar, & |
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| 96 | & pvalsout, knoout, kstartout, mpivar, & |
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| 97 | & mpi_comm_opa, ierr ) |
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| 98 | #elif defined key_mpp_shmem |
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| 99 | error "Only MPI support for MPP in NEMOVAR" |
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| 100 | #else |
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| 101 | !----------------------------------------------------------------------- |
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| 102 | ! For no-MPP just return input values |
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| 103 | !----------------------------------------------------------------------- |
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| 104 | pvalsout(1:knoin) = pvalsin(1:knoin) |
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| 105 | kstartout(1) = 0 |
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| 106 | knoout(1) = knoin |
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| 107 | |
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| 108 | #endif |
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| 109 | |
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| 110 | END SUBROUTINE mpp_allgatherv_real |
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| 111 | |
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| 112 | SUBROUTINE mpp_allgatherv_int( kvalsin, knoin, kvalsout, ksizeout, & |
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| 113 | & knoout, kstartout ) |
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| 114 | !!---------------------------------------------------------------------- |
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| 115 | !! *** ROUTINE mpp_allgatherv *** |
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| 116 | !! |
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| 117 | !! ** Purpose : Gather an integer array on all processors |
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| 118 | !! |
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| 119 | !! ** Method : MPI all gatherv |
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| 120 | !! |
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| 121 | !! ** Action : This does only work for MPI. |
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| 122 | !! It does not work for SHMEM. |
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| 123 | !! |
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| 124 | !! References : http://www.mpi-forum.org |
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| 125 | !! |
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| 126 | !! History : |
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| 127 | !! ! 06-07 (K. Mogensen) Original code |
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| 128 | !!---------------------------------------------------------------------- |
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| 129 | |
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| 130 | !! * Arguments |
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| 131 | INTEGER, INTENT(IN) :: & |
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| 132 | & knoin, & |
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| 133 | & ksizeout |
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| 134 | INTEGER, DIMENSION(knoin), INTENT(IN) :: & |
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| 135 | & kvalsin |
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| 136 | INTEGER, DIMENSION(ksizeout), INTENT(OUT) :: & |
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| 137 | & kvalsout |
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| 138 | INTEGER, DIMENSION(jpnij), INTENT(OUT) :: & |
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| 139 | & kstartout, & |
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| 140 | & knoout |
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| 141 | |
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| 142 | !! * Local declarations |
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| 143 | INTEGER :: & |
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| 144 | & ierr |
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| 145 | #if defined key_mpp_mpi |
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| 146 | #include <mpif.h> |
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| 147 | INTEGER, DIMENSION(jpnij) :: & |
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| 148 | & idispl |
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| 149 | INTEGER :: & |
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| 150 | & ji |
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| 151 | !----------------------------------------------------------------------- |
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| 152 | ! Call the MPI library to get number of data per processor |
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| 153 | !----------------------------------------------------------------------- |
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| 154 | CALL mpi_allgather( knoin, 1, mpi_integer, & |
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| 155 | & knoout, 1, mpi_integer, & |
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| 156 | & mpi_comm_opa, ierr ) |
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| 157 | !----------------------------------------------------------------------- |
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| 158 | ! Compute starts of each processors contribution |
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| 159 | !----------------------------------------------------------------------- |
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| 160 | kstartout(1) = 0 |
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| 161 | DO ji = 2, jpnij |
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| 162 | kstartout(ji) = kstartout(ji-1) + knoout(ji-1) |
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| 163 | ENDDO |
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| 164 | !----------------------------------------------------------------------- |
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| 165 | ! Call the MPI library to do the gathering of the data |
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| 166 | !----------------------------------------------------------------------- |
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| 167 | CALL mpi_allgatherv( kvalsin, knoin, mpi_integer, & |
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| 168 | & kvalsout, knoout, kstartout, mpi_integer, & |
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| 169 | & mpi_comm_opa, ierr ) |
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| 170 | #elif defined key_mpp_shmem |
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| 171 | error "Only MPI support for MPP in NEMOVAR" |
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| 172 | #else |
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| 173 | !----------------------------------------------------------------------- |
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| 174 | ! For no-MPP just return input values |
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| 175 | !----------------------------------------------------------------------- |
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| 176 | kvalsout(1:knoin) = kvalsin(1:knoin) |
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| 177 | kstartout(1) = 0 |
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| 178 | knoout(1) = knoin |
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| 179 | |
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| 180 | #endif |
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| 181 | |
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| 182 | END SUBROUTINE mpp_allgatherv_int |
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| 183 | |
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| 184 | END MODULE mppallgatherv |
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