MODULE mpp_map !!====================================================================== !! *** MODULE mpp_mpa *** !! NEMOVAR: MPP global grid point mapping to processors !!====================================================================== !! History : 2.0 ! 2007-08 (K. Mogensen) Original code !!---------------------------------------------------------------------- !!---------------------------------------------------------------------- !! mppmap_init : Initialize mppmap. !!---------------------------------------------------------------------- USE par_kind, ONLY : wp ! Precision variables USE par_oce , ONLY : jpi, jpj ! Ocean parameters USE dom_oce , ONLY : mig, mjg, nldi, nlei, nldj, nlej, narea ! Ocean space and time domain variables #if defined key_mpp_mpi USE lib_mpp, ONLY : mpi_comm_opa ! MPP library #endif USE in_out_manager ! I/O manager IMPLICIT NONE PRIVATE PUBLIC :: mppmap_init, mppmap !: ??? INTEGER, DIMENSION(:,:), ALLOCATABLE :: mppmap ! ??? !!---------------------------------------------------------------------- !! NEMO/OPA 3.3 , NEMO Consortium (2010) !! $Id: mpp_map.F90 4245 2013-11-19 11:19:21Z cetlod $ !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) !!---------------------------------------------------------------------- CONTAINS SUBROUTINE mppmap_init !!---------------------------------------------------------------------- !! *** ROUTINE mppmap_init *** !! !! ** Purpose : Setup a global map of processor rank for all gridpoints !! !! ** Method : MPI all reduce. !! !! ** Action : This does only work for MPI. !! !! References : http://www.mpi-forum.org !!---------------------------------------------------------------------- INTEGER, DIMENSION(:,:), ALLOCATABLE :: imppmap ! #if defined key_mpp_mpi INTEGER :: ierr INCLUDE 'mpif.h' #endif !!---------------------------------------------------------------------- IF (.NOT. ALLOCATED(mppmap)) THEN ALLOCATE( & & mppmap(jpiglo,jpjglo) & & ) ENDIF ! Initialize local imppmap ALLOCATE( & & imppmap(jpiglo,jpjglo) & & ) imppmap(:,:) = 0 ! Setup local grid points imppmap(mig(nldi):mig(nlei),mjg(nldj):mjg(nlej)) = narea ! Get global data #if defined key_mpp_mpi ! Call the MPI library to find the max across processors CALL mpi_allreduce( imppmap, mppmap, jpiglo*jpjglo, mpi_integer, & & mpi_max, mpi_comm_opa, ierr ) #else ! No MPP: Just copy the data mppmap(:,:) = imppmap(:,:) #endif ! END SUBROUTINE mppmap_init !!====================================================================== END MODULE mpp_map