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update_halo.f90
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update_halo.f90
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!Crown Copyright 2014 AWE.
!
! This file is part of TeaLeaf.
!
! TeaLeaf 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.
!
! TeaLeaf 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
! TeaLeaf. If not, see http://www.gnu.org/licenses/.
!> @brief Driver for the halo updates
!> @author David Beckingsale, Wayne Gaudin
!> @details Invokes the kernels for the internal and external halo cells for
!> the fields specified.
MODULE update_halo_module
USE tea_module
USE report_module
USE update_halo_kernel_module
USE update_internal_halo_kernel_module
CONTAINS
SUBROUTINE update_halo(fields,depth)
IMPLICIT NONE
INTEGER :: fields(NUM_FIELDS),depth
REAL(KIND=8) :: timer,halo_time
IF (profiler_on) halo_time=timer()
CALL tea_exchange( fields, depth)
IF (profiler_on) profiler%halo_exchange = profiler%halo_exchange + (timer() - halo_time)
CALL update_boundary( fields, depth)
CALL update_tile_boundary( fields, depth)
END SUBROUTINE update_halo
SUBROUTINE update_boundary( fields,depth)
IMPLICIT NONE
INTEGER :: t,fields(NUM_FIELDS),depth
REAL(KIND=8) :: timer,halo_time
IF (profiler_on) halo_time=timer()
IF (reflective_boundary .EQV. .TRUE. .AND. ANY(chunk%chunk_neighbours .EQ. EXTERNAL_FACE)) THEN
IF (use_fortran_kernels)THEN
!$OMP PARALLEL
!$OMP DO
DO t=1,tiles_per_task
CALL update_halo_kernel(chunk%tiles(t)%field%x_min, &
chunk%tiles(t)%field%x_max, &
chunk%tiles(t)%field%y_min, &
chunk%tiles(t)%field%y_max, &
chunk%halo_exchange_depth, &
chunk%chunk_neighbours, &
chunk%tiles(t)%tile_neighbours, &
chunk%tiles(t)%field%density, &
chunk%tiles(t)%field%energy0, &
chunk%tiles(t)%field%energy1, &
chunk%tiles(t)%field%u, &
chunk%tiles(t)%field%vector_p, &
chunk%tiles(t)%field%vector_sd, &
chunk%tiles(t)%field%vector_rtemp, &
chunk%tiles(t)%field%vector_z, &
chunk%tiles(t)%field%vector_kx, &
chunk%tiles(t)%field%vector_ky, &
chunk%tiles(t)%field%vector_di, &
fields, &
depth )
ENDDO
!$OMP END DO NOWAIT
!$OMP END PARALLEL
ENDIF
ENDIF
IF (profiler_on) profiler%halo_update = profiler%halo_update + (timer() - halo_time)
END SUBROUTINE update_boundary
SUBROUTINE update_tile_boundary( fields, depth)
IMPLICIT NONE
INTEGER :: t,fields(NUM_FIELDS),depth, right_idx, up_idx
REAL(KIND=8) :: timer,halo_time
IF (profiler_on) halo_time=timer()
IF (tiles_per_task .GT. 1) THEN
IF (use_fortran_kernels)THEN
!$OMP PARALLEL PRIVATE(right_idx, up_idx)
!$OMP DO
DO t=1,tiles_per_task
right_idx = chunk%tiles(t)%tile_neighbours(CHUNK_RIGHT)
IF (right_idx .NE. EXTERNAL_FACE) THEN
CALL update_internal_halo_left_right_kernel( &
chunk%tiles(t)%field%x_min, &
chunk%tiles(t)%field%x_max, &
chunk%tiles(t)%field%y_min, &
chunk%tiles(t)%field%y_max, &
chunk%tiles(t)%field%density, &
chunk%tiles(t)%field%energy0, &
chunk%tiles(t)%field%energy1, &
chunk%tiles(t)%field%u, &
chunk%tiles(t)%field%vector_p, &
chunk%tiles(t)%field%vector_sd, &
chunk%tiles(t)%field%vector_rtemp, &
chunk%tiles(t)%field%vector_z, &
chunk%tiles(t)%field%vector_kx, &
chunk%tiles(t)%field%vector_ky, &
chunk%tiles(t)%field%vector_di, &
chunk%tiles(right_idx)%field%x_min, &
chunk%tiles(right_idx)%field%x_max, &
chunk%tiles(right_idx)%field%y_min, &
chunk%tiles(right_idx)%field%y_max, &
chunk%tiles(right_idx)%field%density, &
chunk%tiles(right_idx)%field%energy0, &
chunk%tiles(right_idx)%field%energy1, &
chunk%tiles(right_idx)%field%u, &
chunk%tiles(right_idx)%field%vector_p, &
chunk%tiles(right_idx)%field%vector_sd, &
chunk%tiles(right_idx)%field%vector_rtemp, &
chunk%tiles(right_idx)%field%vector_z, &
chunk%tiles(right_idx)%field%vector_kx, &
chunk%tiles(right_idx)%field%vector_ky, &
chunk%tiles(right_idx)%field%vector_di, &
chunk%halo_exchange_depth, &
fields, &
depth )
ENDIF
ENDDO
!$OMP END DO NOWAIT
!$ IF (depth .GT. 1) THEN
!$OMP BARRIER
!$ ENDIF
!$OMP DO
DO t=1,tiles_per_task
up_idx = chunk%tiles(t)%tile_neighbours(CHUNK_TOP)
IF (up_idx .NE. EXTERNAL_FACE) THEN
CALL update_internal_halo_bottom_top_kernel( &
chunk%tiles(t)%field%x_min, &
chunk%tiles(t)%field%x_max, &
chunk%tiles(t)%field%y_min, &
chunk%tiles(t)%field%y_max, &
chunk%tiles(t)%field%density, &
chunk%tiles(t)%field%energy0, &
chunk%tiles(t)%field%energy1, &
chunk%tiles(t)%field%u, &
chunk%tiles(t)%field%vector_p, &
chunk%tiles(t)%field%vector_sd, &
chunk%tiles(t)%field%vector_rtemp, &
chunk%tiles(t)%field%vector_z, &
chunk%tiles(t)%field%vector_kx, &
chunk%tiles(t)%field%vector_ky, &
chunk%tiles(t)%field%vector_di, &
chunk%tiles(up_idx)%field%x_min, &
chunk%tiles(up_idx)%field%x_max, &
chunk%tiles(up_idx)%field%y_min, &
chunk%tiles(up_idx)%field%y_max, &
chunk%tiles(up_idx)%field%density, &
chunk%tiles(up_idx)%field%energy0, &
chunk%tiles(up_idx)%field%energy1, &
chunk%tiles(up_idx)%field%u, &
chunk%tiles(up_idx)%field%vector_p, &
chunk%tiles(up_idx)%field%vector_sd, &
chunk%tiles(up_idx)%field%vector_rtemp, &
chunk%tiles(up_idx)%field%vector_z, &
chunk%tiles(up_idx)%field%vector_kx, &
chunk%tiles(up_idx)%field%vector_ky, &
chunk%tiles(up_idx)%field%vector_di, &
chunk%halo_exchange_depth, &
fields, &
depth )
ENDIF
ENDDO
!$OMP END DO NOWAIT
!$OMP END PARALLEL
ENDIF
ENDIF
IF (profiler_on) profiler%internal_halo_update = profiler%internal_halo_update + (timer() - halo_time)
END SUBROUTINE update_tile_boundary
END MODULE update_halo_module