[2128] | 1 | MODULE mpp_map |
---|
| 2 | !!====================================================================== |
---|
| 3 | !! *** MODULE mpp_mpa *** |
---|
| 4 | !! NEMOVAR: MPP global grid point mapping to processors |
---|
| 5 | !!====================================================================== |
---|
[2335] | 6 | !! History : 2.0 ! 2007-08 (K. Mogensen) Original code |
---|
| 7 | !!---------------------------------------------------------------------- |
---|
[2128] | 8 | |
---|
| 9 | !!---------------------------------------------------------------------- |
---|
[2335] | 10 | !! mppmap_init : Initialize mppmap. |
---|
[2128] | 11 | !!---------------------------------------------------------------------- |
---|
[2335] | 12 | USE par_kind, ONLY : wp ! Precision variables |
---|
| 13 | USE par_oce , ONLY : jpi, jpj ! Ocean parameters |
---|
| 14 | USE dom_oce , ONLY : mig, mjg, nldi, nlei, nldj, nlej, narea ! Ocean space and time domain variables |
---|
[2128] | 15 | #if defined key_mpp_mpi |
---|
[2335] | 16 | USE lib_mpp, ONLY : mpi_comm_opa ! MPP library |
---|
[2128] | 17 | #endif |
---|
[2335] | 18 | USE in_out_manager ! I/O manager |
---|
[2128] | 19 | |
---|
| 20 | IMPLICIT NONE |
---|
| 21 | PRIVATE |
---|
| 22 | |
---|
[2335] | 23 | PUBLIC :: mppmap_init, mppmap !: ??? |
---|
[2128] | 24 | |
---|
[2335] | 25 | INTEGER, DIMENSION(:,:), ALLOCATABLE :: mppmap ! ??? |
---|
[2128] | 26 | |
---|
[2287] | 27 | !!---------------------------------------------------------------------- |
---|
| 28 | !! NEMO/OPA 3.3 , NEMO Consortium (2010) |
---|
| 29 | !! $Id$ |
---|
[2335] | 30 | !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) |
---|
[2287] | 31 | !!---------------------------------------------------------------------- |
---|
[2128] | 32 | CONTAINS |
---|
| 33 | |
---|
| 34 | SUBROUTINE mppmap_init |
---|
| 35 | !!---------------------------------------------------------------------- |
---|
| 36 | !! *** ROUTINE mppmap_init *** |
---|
| 37 | !! |
---|
| 38 | !! ** Purpose : Setup a global map of processor rank for all gridpoints |
---|
| 39 | !! |
---|
| 40 | !! ** Method : MPI all reduce. |
---|
| 41 | !! |
---|
| 42 | !! ** Action : This does only work for MPI. |
---|
| 43 | !! |
---|
| 44 | !! References : http://www.mpi-forum.org |
---|
| 45 | !!---------------------------------------------------------------------- |
---|
[2335] | 46 | INTEGER, DIMENSION(:,:), ALLOCATABLE :: imppmap ! |
---|
[2128] | 47 | #if defined key_mpp_mpi |
---|
| 48 | INTEGER :: ierr |
---|
[2363] | 49 | |
---|
[2249] | 50 | INCLUDE 'mpif.h' |
---|
[2128] | 51 | #endif |
---|
[2335] | 52 | !!---------------------------------------------------------------------- |
---|
[2128] | 53 | |
---|
| 54 | ALLOCATE( & |
---|
| 55 | & mppmap(jpiglo,jpjglo) & |
---|
| 56 | & ) |
---|
| 57 | |
---|
| 58 | ! Initialize local imppmap |
---|
| 59 | |
---|
| 60 | ALLOCATE( & |
---|
| 61 | & imppmap(jpiglo,jpjglo) & |
---|
| 62 | & ) |
---|
| 63 | imppmap(:,:) = 0 |
---|
| 64 | |
---|
| 65 | ! Setup local grid points |
---|
| 66 | imppmap(mig(nldi):mig(nlei),mjg(nldj):mjg(nlej)) = narea |
---|
| 67 | |
---|
| 68 | ! Get global data |
---|
| 69 | |
---|
| 70 | #if defined key_mpp_mpi |
---|
| 71 | |
---|
| 72 | ! Call the MPI library to find the max across processors |
---|
[2335] | 73 | CALL mpi_allreduce( imppmap, mppmap, jpiglo*jpjglo, mpi_integer, & |
---|
[2128] | 74 | & mpi_max, mpi_comm_opa, ierr ) |
---|
| 75 | #else |
---|
| 76 | |
---|
[2335] | 77 | ! No MPP: Just copy the data |
---|
[2128] | 78 | mppmap(:,:) = imppmap(:,:) |
---|
| 79 | #endif |
---|
[2335] | 80 | ! |
---|
[2128] | 81 | END SUBROUTINE mppmap_init |
---|
| 82 | |
---|
[2335] | 83 | !!====================================================================== |
---|
[2128] | 84 | END MODULE mpp_map |
---|