redefine_halos Subroutine

private subroutine redefine_halos(levelDesc, sendbuffer, recvbuffer, proc, commPattern, computeStencil)

Report the actually existing elements, which were requested as halos from remote

Arguments

Type IntentOptional Attributes Name
type(tem_levelDesc_type), intent(inout) :: levelDesc

the level descriptor of specific level
type(tem_communication_type), intent(inout) :: sendbuffer

send and receive communication buffer type
type(tem_communication_type), intent(inout) :: recvbuffer

send and receive communication buffer type
type(tem_comm_env_type), intent(in) :: proc

Process description to use.
type(tem_commPattern_type) :: commPattern

communication pattern
type(tem_stencilHeader_type) :: computeStencil(:)

array of all stencils used in the simulation

Calls

proc~~redefine_halos~~CallsGraph proc~redefine_halos redefine_halos interface~append~29 append proc~redefine_halos->interface~append~29 interface~changetype changeType proc~redefine_halos->interface~changetype interface~init~20 init proc~redefine_halos->interface~init~20 interface~tem_logging_isactive tem_logging_isActive proc~redefine_halos->interface~tem_logging_isactive proc~tem_comm_dumptype tem_comm_dumpType proc~redefine_halos->proc~tem_comm_dumptype proc~tem_stencil_communicate tem_stencil_communicate proc~redefine_halos->proc~tem_stencil_communicate proc~append_ga_dynlong append_ga_dynlong interface~append~29->proc~append_ga_dynlong proc~append_ga_dynlong_vec append_ga_dynlong_vec interface~append~29->proc~append_ga_dynlong_vec proc~changetype_element changeType_element interface~changetype->proc~changetype_element proc~changetype_element_vec changeType_element_vec interface~changetype->proc~changetype_element_vec proc~init_ga2d_real init_ga2d_real interface~init~20->proc~init_ga2d_real proc~tem_logging_isactive_for tem_logging_isActive_for interface~tem_logging_isactive->proc~tem_logging_isactive_for proc~tem_logging_isactive_primary tem_logging_isActive_primary interface~tem_logging_isactive->proc~tem_logging_isactive_primary interface~tem_tostr tem_toStr proc~tem_comm_dumptype->interface~tem_tostr proc~tem_stencil_communicate->interface~append~29 proc~tem_stencil_communicate->interface~init~20 proc~tem_stencil_getheaderpos tem_stencil_getHeaderPos proc~tem_stencil_communicate->proc~tem_stencil_getheaderpos proc~tem_b2str tem_b2str interface~tem_tostr->proc~tem_b2str proc~tem_b2str_arr tem_b2str_arr interface~tem_tostr->proc~tem_b2str_arr proc~tem_d2str tem_d2str interface~tem_tostr->proc~tem_d2str proc~tem_d2str_arr tem_d2str_arr interface~tem_tostr->proc~tem_d2str_arr proc~tem_i2str tem_i2str interface~tem_tostr->proc~tem_i2str proc~tem_i2str_arr tem_i2str_arr interface~tem_tostr->proc~tem_i2str_arr proc~tem_l2str tem_l2str interface~tem_tostr->proc~tem_l2str proc~tem_l2str_arr tem_l2str_arr interface~tem_tostr->proc~tem_l2str_arr proc~tem_r2str tem_r2str interface~tem_tostr->proc~tem_r2str proc~tem_r2str_arr tem_r2str_arr interface~tem_tostr->proc~tem_r2str_arr interface~expand~25 expand proc~append_ga_dynlong->interface~expand~25 proc~append_ga_dynlong_vec->interface~expand~25 proc~tem_etypeisvalid tem_eTypeIsValid proc~changetype_element->proc~tem_etypeisvalid proc~changetype_element_vec->proc~tem_etypeisvalid proc~expand_ga_dynlong expand_ga_dynlong interface~expand~25->proc~expand_ga_dynlong

Called by

proc~~redefine_halos~~CalledByGraph proc~redefine_halos redefine_halos proc~communicate_elements communicate_elements proc~communicate_elements->proc~redefine_halos proc~tem_find_allelements tem_find_allElements proc~tem_find_allelements->proc~communicate_elements proc~tem_create_leveldesc tem_create_levelDesc proc~tem_create_leveldesc->proc~tem_find_allelements proc~tem_dimbydim_construction tem_dimByDim_construction proc~tem_dimbydim_construction->proc~tem_create_leveldesc

Source Code

  subroutine redefine_halos( levelDesc, sendbuffer, recvbuffer, proc,           &
    &                        commPattern, computeStencil )
    ! ---------------------------------------------------------------------------
    !> the level descriptor of specific level
    type(tem_levelDesc_type), intent(inout) :: levelDesc
    !> send and receive communication buffer type
    type(tem_communication_type), intent(inout) :: sendbuffer, recvbuffer
    !> Process description to use.
    type(tem_comm_env_type), intent(in) :: proc
    !> communication pattern
    type(tem_commPattern_type)    :: commPattern
    !> array of all stencils used in the simulation
    type(tem_stencilHeader_type)  :: computeStencil(:)
    ! ---------------------------------------------------------------------------
    integer :: iProc, tPos, iElem, nElems
    integer :: elemCount
    integer(kind=long_k), allocatable :: recvBuf(:)
    integer :: message_flag
    logical :: wasAdded
    ! ---------------------------------------------------------------------------
    message_flag = 3

    allocate( recvBuf(sum(recvbuffer%nElemsProc)) )

    elemCount = 0
    do iProc = 1, recvbuffer%nProcs
      nElems = recvbuffer%nElemsProc(iProc)
      call init(  me     = recvBuffer%elemPos( iProc ),                        &
        &         length = nElems )
      do iElem=1,nElems
        elemCount = elemCount + 1
        call append( me  = recvbuffer%elemPos( iProc ),                        &
          &          val = elemCount )
      end do

      call commPattern%initBuf_long( me    = recvBuffer%buf_long( iProc ),     &
        &                            pos   = recvBuffer%elemPos( iProc )%val,  &
        &                            nVals = recvBuffer%nElemsProc( iProc ))
    end do

    if (tem_logging_isActive(main_debug%logger, 6)) then
      write(dbgUnit(0),*) '  SEND BUFFER '
      call tem_comm_dumpType( me = sendbuffer,    &
        &                     nUnit = dbgUnit(6) )
      write(dbgUnit(0),*) ' '
      write(dbgUnit(0),*) '  RECV BUFFER '
      call tem_comm_dumpType( me = recvbuffer,    &
        &                     nUnit = dbgUnit(6) )
    end if

    ! ---------------------------------------------------------------------
    ! initialize send buffer
    do iProc = 1, sendbuffer%nProcs
      call commPattern%initBuf_long( me    = sendBuffer%buf_long( iProc ),     &
        &                            pos   = sendBuffer%elemPos( iProc )%val,  &
        &                            nVals = sendBuffer%nElemsProc( iProc ))
    end do

    call commPattern%exchange_long( send         = sendbuffer,                 &
      &                             recv         = recvbuffer,                 &
      &                             state        = recvBuf,                    &
      &                             message_flag = message_flag,               &
      &                             comm         = proc%comm,                  &
      &                             send_state   = levelDesc%elem%tID%val )

    ! Now I received all the halos, which are really existing
    ! and required on the remote processes
    ! ---------------------------------------------------------------------

    ! ---------------------------------------------------------------------
    ! Add all received elements
    ! Set the eType accordingly or leave as nonExisting if it was not received
    elemCount = 0
    do iProc = 1, recvbuffer%nProcs
      nElems = recvBuffer%nElemsProc( iProc )
      call commPattern%finBuf_long(me = recvbuffer%buf_long(iProc))
      call init(  me     = recvBuffer%elemPos( iProc ),                        &
        &         length = nElems )
      do iElem = 1, nElems
        elemCount = elemCount + 1
        call append( me         = levelDesc%elem,             &
          &          tID        = recvBuf( elemCount ),       &
          &          sourceProc = recvbuffer%proc( iProc )+1, &
          &          eType      = eT_halo,                    &
          &          pos        = tPos,                       &
          &          wasAdded   = wasAdded )
        if ( .not. wasAdded ) then
          ! If it was not added, it was there before.
          ! Then simply set the element type to halo (was initialized with
          ! eT_nonExistingElem above )
          if ( levelDesc%elem%eType%val( tPos ) == eT_nonExisting ) then
            call changeType( levelDesc%elem, tPos, eT_halo )
          end if
        end if
        call append( me  = recvbuffer%elemPos( iProc ),                        &
          &          val = tPos )
      end do
      call commPattern%initBuf_long( me    = recvbuffer%buf_long( iProc ),     &
        &                            pos   = recvbuffer%elemPos( iProc )%val,  &
        &                            nVals = recvBuffer%nElemsProc( iProc ))
    end do

    deallocate(recvBuf)

    ! ---------------------------------------------------------------------
    ! communicate the properties of the halos
    call commPattern%exchange_long(                                            &
      &                         send         = sendbuffer,                     &
      &                         recv         = recvbuffer,                     &
      &                         state        = levelDesc%elem%property%val(:), &
      &                         message_flag = 5,                              &
      &                         comm         = proc%comm )

    ! communicate the stencil neighbors
    ! the stencil which includes the boundary information
    if ( recvbuffer%nProcs > 0 .or. sendbuffer%nProcs > 0 ) then
      ! communicate only fluid stencil which is defined for all
      ! elements in elem list including halo elements.
      ! In our case, fluid stencil is 1st Stencil so setting iStencil=1
      call tem_stencil_communicate( send           = sendbuffer,             &
        &                           recv           = recvbuffer,             &
        &                           elem           = levelDesc%elem,         &
        &                           proc           = proc,                   &
        &                           commPattern    = commPattern,            &
        &                           computeStencil = computeStencil(1),      &
        &                           iStencil       = 1 )
    end if

    ! Deallocate long type buffer
    do iProc = 1, sendBuffer%nProcs
      call commPattern%finbuf_long( sendBuffer%buf_long(iProc) )
    end do
    do iProc = 1, recvBuffer%nProcs
      call commPattern%finbuf_long( recvBuffer%buf_long(iProc) )
    end do

    write(logUnit(5),*) '  Done communicating stencil buffer'
    ! ---------------------------------------------------------------------

  end subroutine redefine_halos