source: palm/trunk/SOURCE/pmc_general_mod.f90 @ 4712

 MODULE pmc_general

!--------------------------------------------------------------------------------------------------!
! This file is part of the PALM model system.
!
! PALM is free software: you can redistribute it and/or modify it under the terms of the GNU General
! Public License as published by the Free Software Foundation, either version 3 of the License, or
! (at your option) any later version.
!
! PALM is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
! implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
! Public License for more details.
!
! You should have received a copy of the GNU General Public License along with PALM. If not, see
! <http://www.gnu.org/licenses/>.
!
! Copyright 1997-2020 Leibniz Universitaet Hannover
!--------------------------------------------------------------------------------------------------!
!
!
! Current revisions:
! -----------------
!
!
! Former revisions:
! -----------------
! $Id: pmc_general_mod.f90 4649 2020-08-25 12:11:17Z suehring $
! File re-formatted to follow the PALM coding standard
!
! 4629 2020-07-29 09:37:56Z raasch
! Support for MPI Fortran77 interface (mpif.h) removed
!
! 4360 2020-01-07 11:25:50Z suehring
! Corrected "Former revisions" section
!
! 3945 2019-05-02 11:29:27Z raasch
!
! 2019-04-24 17:31:34Z suehring
! Increase character length so that also chemistry variable names fully fit
!
! 3655 2019-01-07 16:51:22Z knoop
! Determine number of coupled arrays dynamically.
!
! 1762 2016-02-25 12:31:13Z hellstea
! Initial revision by K. Ketelsen
!
! Description:
! ------------
!
! Structure definition and utilities of Palm Model Coupler
!--------------------------------------------------------------------------------------------------!

#if defined( __parallel )
    USE, INTRINSIC ::  ISO_C_BINDING

    USE kinds

    USE MPI

    IMPLICIT NONE


    PRIVATE
    SAVE

    INTEGER(iwp), PARAMETER, PUBLIC :: da_desclen       =  8  !<
    INTEGER(iwp), PARAMETER, PUBLIC :: da_namelen       = 16  !<
    INTEGER(iwp), PARAMETER, PUBLIC :: pmc_da_name_err  = 10  !<
    INTEGER(iwp), PARAMETER, PUBLIC :: pmc_max_models   = 64  !<
    INTEGER(iwp), PARAMETER, PUBLIC :: pmc_status_ok    =  0  !<
    INTEGER(iwp), PARAMETER, PUBLIC :: pmc_status_error = -1  !<

    INTEGER(iwp), PUBLIC ::  pmc_max_array  !< max # of arrays which can be coupled
                                            !< - will be determined dynamically in pmc_interface


    TYPE, PUBLIC :: xy_ind  !< pair of indices in horizontal plane
       INTEGER(iwp) ::  i
       INTEGER(iwp) ::  j
    END TYPE

    TYPE, PUBLIC ::  arraydef
       CHARACTER(LEN=da_namelen) ::  Name  !< name of array

       INTEGER(iwp) ::  coupleindex  !<
       INTEGER(iwp) ::  dimkey       !< key for NR dimensions and array type
       INTEGER(iwp) ::  nrdims       !< number of dimensions
       INTEGER(iwp) ::  RecvSize     !< size in receive buffer
       INTEGER(iwp) ::  SendSize     !< size in send buffer

       INTEGER(idp) ::  RecvIndex  !< index in receive buffer
       INTEGER(idp) ::  SendIndex  !< index in send buffer

       INTEGER(iwp), DIMENSION(4) ::  a_dim  !< size of dimensions

       TYPE(C_PTR) ::  data     !< pointer of data in parent space
       TYPE(C_PTR) ::  SendBuf  !< data pointer in send buffer
       TYPE(C_PTR) ::  RecvBuf  !< data pointer in receive buffer

       TYPE(arraydef), POINTER ::  next  !<

       TYPE(C_PTR), DIMENSION(2) ::  po_data  !< base pointers, pmc_s_set_active_data_array
                                              !< sets active pointer
    END TYPE arraydef


    TYPE(arraydef), PUBLIC, POINTER  :: next  !<


    TYPE, PUBLIC ::  pedef
       INTEGER(iwp) :: nr_arrays = 0  !< number of arrays which will be transfered
       INTEGER(iwp) :: nrele          !< number of elements, same for all arrays

       TYPE(arraydef), POINTER, DIMENSION(:) ::  array_list  !< list of data arrays to be transfered
       TYPE(xy_ind), POINTER, DIMENSION(:)   ::  locInd      !< xy index local array for remote PE
    END TYPE pedef


    TYPE, PUBLIC ::  childdef
       INTEGER(iwp) ::  inter_comm         !< inter communicator model and child
       INTEGER(iwp) ::  inter_npes         !< number of PEs child model
       INTEGER(iwp) ::  intra_comm         !< intra communicator model and child
       INTEGER(iwp) ::  intra_rank         !< rank within intra_comm
       INTEGER(iwp) ::  model_comm         !< communicator of this model
       INTEGER(iwp) ::  model_npes         !< number of PEs this model
       INTEGER(iwp) ::  model_rank         !< rank of this model
       INTEGER(idp) ::  totalbuffersize    !<
       INTEGER(iwp) ::  win_parent_child   !< MPI RMA for preparing data on parent AND child side
       TYPE(pedef), DIMENSION(:), POINTER ::  pes  !< list of all child PEs
    END TYPE childdef


    TYPE, PUBLIC ::  da_namedef  !< data array name definition
       CHARACTER(LEN=da_desclen) ::  childdesc     !< child array description
       CHARACTER(LEN=da_namelen) ::  nameonchild   !< name of array within child
       CHARACTER(LEN=da_namelen) ::  nameonparent  !< name of array within parent
       CHARACTER(LEN=da_desclen) ::  parentdesc    !< parent array description
       INTEGER(iwp)              ::  couple_index  !< unique number of array
    END TYPE da_namedef

    INTERFACE pmc_g_setname
       MODULE PROCEDURE pmc_g_setname
    END INTERFACE pmc_g_setname

    INTERFACE pmc_sort
       MODULE PROCEDURE sort_2d_i
    END INTERFACE pmc_sort

    PUBLIC pmc_g_setname, pmc_sort

 CONTAINS

!--------------------------------------------------------------------------------------------------!
! Description:
! ------------
!> @Todo: Missing subroutine description.
!--------------------------------------------------------------------------------------------------!
 SUBROUTINE pmc_g_setname( mychild, couple_index, aname )

    IMPLICIT NONE

    CHARACTER(LEN=*)              ::  aname         !<

    INTEGER(iwp), INTENT(IN)      ::  couple_index  !<

    INTEGER(iwp) ::  i  !<

    TYPE(childdef), INTENT(INOUT) ::  mychild       !<

    TYPE(pedef), POINTER    ::  ape  !<

!
!-- Assign array to next free index in array list.
!-- Set name of array in arraydef structure
    DO  i = 1, mychild%inter_npes
       ape => mychild%pes(i)
       ape%nr_arrays = ape%nr_arrays + 1
       ape%array_list(ape%nr_arrays)%name        = aname
       ape%array_list(ape%nr_arrays)%coupleindex = couple_index
    ENDDO

 END SUBROUTINE pmc_g_setname


!--------------------------------------------------------------------------------------------------!
! Description:
! ------------
!> @Todo: Missing subroutine description.
!--------------------------------------------------------------------------------------------------!
 SUBROUTINE sort_2d_i( array, sort_ind )

    IMPLICIT NONE

    INTEGER(iwp), INTENT(IN)                    ::  sort_ind
    INTEGER(iwp), DIMENSION(:,:), INTENT(INOUT) ::  array

    INTEGER(iwp) ::  i  !<
    INTEGER(iwp) ::  j  !<
    INTEGER(iwp) ::  n  !<

    INTEGER(iwp), DIMENSION(SIZE(array,1)) ::  tmp  !<

    n = SIZE( array, 2 )
    DO  j = 1, n-1
       DO  i = j+1, n
          IF ( array(sort_ind,i) < array(sort_ind,j) )  THEN
             tmp = array(:,i)
             array(:,i) = array(:,j)
             array(:,j) = tmp
          ENDIF
       ENDDO
    ENDDO

 END  SUBROUTINE sort_2d_i

#endif
 END MODULE pmc_general