PLAG_PatchBufferSendRecv.F90

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!******************************************************************************
!
! Purpose: driver to communicate buffer data for adjacent regions 
!          on different processors.
!
! Description: none.
!
! Input: regions = data of all regions.
!
! Output: buffer sizes, data and appended PLAG data.
!
! Notes: None.
!
!******************************************************************************
!
! $Id: PLAG_PatchBufferSendRecv.F90,v 1.3 2008/12/06 08:44:34 mtcampbe Exp $
!
! Copyright: (c) 2003 by the University of Illinois
!
!******************************************************************************

SUBROUTINE plag_patchbuffersendrecv( regions )

  USE moddatatypes
  USE modpartlag, ONLY    : t_buffer_plag
  USE modbndpatch, ONLY   : t_patch
  USE moddatastruct, ONLY : t_region
  USE modglobal, ONLY     : t_global
  USE modpartlag, ONLY    : t_plag
  USE plag_modinterfaces, ONLY: plag_appenddatafrombuffers, &
                                plag_bufferdatarecv,        &
                                plag_bufferdatasend,        &                                
                                plag_buffersizerecv,        &
                                plag_buffersizesend,        &
                                plag_clearsizesendrequests, &
                                plag_cleardatasendrequests
  USE moderror
  USE modmpi
  USE modparameters
  IMPLICIT NONE

! ... parameters
  TYPE(t_region), POINTER :: regions(:)

! ... loop variables
  INTEGER :: ireg

! ... local variables
  CHARACTER(CHRLEN) :: rcsidentstring

  TYPE(t_global), POINTER :: global

!******************************************************************************

  rcsidentstring = '$RCSfile: PLAG_PatchBufferSendRecv.F90,v $ $Revision: 1.3 $'

  global => regions(1)%global

  CALL registerfunction( global,'PLAG_PatchBufferSendRecv',&
  'PLAG_PatchBufferSendRecv.F90' )

! communicate buffer size -----------------------------------------------------
                           
! send buffer size ------------------------------------------------------------  

  DO ireg = 1, global%nRegions
    IF (regions(ireg)%procid==global%myProcid .AND. &   ! region active and
        regions(ireg)%active==active) THEN              ! on my processor        
      CALL plag_buffersizesend(regions, ireg)    
    ENDIF       ! regions    
  ENDDO         ! iReg
                     
! receive buffer size ---------------------------------------------------------

  DO ireg = 1, global%nRegions
    IF (regions(ireg)%procid==global%myProcid .AND. &   ! region active and
        regions(ireg)%active==active) THEN              ! on my processor        
      CALL plag_buffersizerecv(regions, ireg)
    ENDIF ! regions
  ENDDO ! iReg 

! wait for data being received by other processors ----------------------------

  DO ireg = 1, global%nRegions
    IF (regions(ireg)%procid==global%myProcid .AND. &   ! region active and
        regions(ireg)%active==active) THEN              ! on my processor        
      CALL plag_clearsizesendrequests(regions, ireg)
    ENDIF ! regions  
  ENDDO ! iReg

! communicate buffer arrays ---------------------------------------------------
                           
! send buffer data ------------------------------------------------------------  

  DO ireg = 1, global%nRegions
    IF (regions(ireg)%procid==global%myProcid .AND. &   ! region active and
        regions(ireg)%active==active) THEN              ! on my processor        
      CALL plag_bufferdatasend(regions, ireg)    
    ENDIF       ! regions    
  ENDDO         ! iReg
                     
! receive buffer data ---------------------------------------------------------

  DO ireg = 1, global%nRegions
    IF (regions(ireg)%procid==global%myProcid .AND. &   ! region active and
        regions(ireg)%active==active) THEN              ! on my processor        
      CALL plag_bufferdatarecv(regions, ireg)
    ENDIF ! regions
  ENDDO ! iReg 

! wait for data being received by other processors ----------------------------

  DO ireg = 1, global%nRegions
    IF (regions(ireg)%procid==global%myProcid .AND. &   ! region active and
        regions(ireg)%active==active) THEN              ! on my processor        
      CALL plag_cleardatasendrequests(regions, ireg)
    ENDIF ! regions  
  ENDDO ! iReg
  
! Append data from buffers ----------------------------------------------------

  DO ireg = 1, global%nRegions
    IF (regions(ireg)%procid==global%myProcid .AND. &   ! region active and
        regions(ireg)%active==active) THEN              ! on my processor
  
!     WRITE(STDOUT,'(A,I2)') '    Entering PLAG_AppendDatafromBuffers: iReg', iReg

      CALL plag_appenddatafrombuffers( regions(ireg), ireg )

    ENDIF ! regions  
  ENDDO ! iReg
  
#ifdef MPI
  CALL mpi_barrier( global%mpiComm,global%mpierr )
  IF ( global%mpierr /= err_none ) &
    CALL errorstop( global,err_mpi_trouble,__line__ )

!  CALL MPI_Finalize(global%mpierr)
!  IF ( global%mpierr /= ERR_NONE ) &
!    CALL ErrorStop( global,ERR_MPI_TROUBLE,__LINE__ )
!
!  STOP
#endif
  
! finalize --------------------------------------------------------------------

  CALL deregisterfunction( global )

END SUBROUTINE plag_patchbuffersendrecv

!******************************************************************************
!
! RCS Revision history:
!
! $Log: PLAG_PatchBufferSendRecv.F90,v $
! Revision 1.3  2008/12/06 08:44:34  mtcampbe
! Updated license.
!
! Revision 1.2  2008/11/19 22:17:47  mtcampbe
! Added Illinois Open Source License/Copyright
!
! Revision 1.1  2004/12/01 20:57:54  fnajjar
! Initial revision after changing case
!
! Revision 1.4  2003/02/21 17:07:55  fnajjar
! Included calls to Data Send and Recv
!
! Revision 1.3  2003/01/24 22:40:27  f-najjar
! Added MPI_Barrier and MPI_Finalize for testing
!
! Revision 1.2  2003/01/24 22:08:31  f-najjar
! Include function call to PLAG_ClearRequests
!
! Revision 1.1  2003/01/23 18:51:49  f-najjar
! Initial Import for MPI
!
!******************************************************************************