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clover.f90
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!Crown Copyright 2012 AWE.
!
! This file is part of CloverLeaf.
!
! CloverLeaf 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.
!
! CloverLeaf 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
! CloverLeaf. If not, see http://www.gnu.org/licenses/.
!> @brief Communication Utilities
!> @author Wayne Gaudin, Ollie Perks
!> @details Contains all utilities required to run CloverLeaf in a distributed
!> environment, including initialisation, mesh decompostion, reductions and
!> halo exchange using explicit buffers.
!>
!> Note the halo exchange is currently coded as simply as possible and no
!> optimisations have been implemented, such as post receives before sends or packing
!> buffers with multiple data fields. This is intentional so the effect of these
!> optimisations can be measured on large systems, as and when they are added.
!>
!> Even without these modifications CloverLeaf weak scales well on moderately sized
!> systems of the order of 10K cores.
MODULE clover_module
USE data_module
USE definitions_module
USE MPI
IMPLICIT NONE
CONTAINS
SUBROUTINE clover_barrier
INTEGER :: err
CALL MPI_BARRIER(MPI_COMM_WORLD,err)
END SUBROUTINE clover_barrier
SUBROUTINE clover_abort
INTEGER :: ierr,err
CALL MPI_ABORT(MPI_COMM_WORLD,ierr,err)
END SUBROUTINE clover_abort
SUBROUTINE clover_finalize
INTEGER :: err
CLOSE(g_out)
CALL FLUSH(0)
CALL FLUSH(6)
CALL FLUSH(g_out)
CALL MPI_FINALIZE(err)
END SUBROUTINE clover_finalize
SUBROUTINE clover_init_comms
IMPLICIT NONE
INTEGER :: err,rank,size
rank=0
size=1
CALL MPI_INIT(err)
CALL MPI_COMM_RANK(MPI_COMM_WORLD,rank,err)
CALL MPI_COMM_SIZE(MPI_COMM_WORLD,size,err)
parallel%parallel=.TRUE.
parallel%task=rank
IF(rank.EQ.0) THEN
parallel%boss=.TRUE.
ENDIF
parallel%boss_task=0
parallel%max_task=size
END SUBROUTINE clover_init_comms
SUBROUTINE clover_get_num_chunks(count)
IMPLICIT NONE
INTEGER :: count
! Should be changed so there can be more than one chunk per mpi task
count=parallel%max_task
END SUBROUTINE clover_get_num_chunks
SUBROUTINE clover_decompose(x_cells,y_cells,z_cells,left,right,bottom,top,back,front)
! This decomposes the mesh into a number of chunks.
! The number of chunks may be a multiple of the number of mpi tasks
! Picks split with minimal surface area to volume ratio
IMPLICIT NONE
INTEGER :: x_cells,y_cells,z_cells,left(:),right(:),top(:),bottom(:),back(:),front(:)
INTEGER :: c,delta_x,delta_y,delta_z
REAL(KIND=8) :: surface,volume,best_metric,current_metric
INTEGER :: chunk_x,chunk_y,chunk_z,mod_x,mod_y,mod_z
INTEGER :: cx,cy,cz,chunk,add_x,add_y,add_z,add_x_prev,add_y_prev,add_z_prev
INTEGER :: div1,j,current_x,current_y,current_z
! 3D Decomposition of the mesh
current_x = 1
current_y = 1
current_z = number_of_chunks
! Initialise metric
surface = (((1.0*x_cells)/current_x)*((1.0*y_cells)/current_y)*2) &
+ (((1.0*x_cells)/current_x)*((1.0*z_cells)/current_z)*2) &
+ (((1.0*y_cells)/current_y)*((1.0*z_cells)/current_z)*2)
volume = ((1.0*x_cells)/current_x)*((1.0*y_cells)/current_y)*((1.0*z_cells)/current_z)
best_metric = surface/volume
chunk_x=current_x
chunk_y=current_y
chunk_z=current_z
DO c=1,number_of_chunks
! If doesn't evenly divide loop
IF(MOD(number_of_chunks,c).NE.0) CYCLE
current_x=c
div1 = number_of_chunks/c
DO j=1,div1
IF(MOD(div1,j).NE.0) CYCLE
current_y = j
IF(MOD(number_of_chunks,(c*j)).NE.0) CYCLE
current_z = number_of_chunks/(c*j)
surface = (((1.0*x_cells)/current_x)*((1.0*y_cells)/current_y)*2) &
+ (((1.0*x_cells)/current_x)*((1.0*z_cells)/current_z)*2) &
+ (((1.0*y_cells)/current_y)*((1.0*z_cells)/current_z)*2)
volume = ((1.0*x_cells)/current_x)*((1.0*y_cells)/current_y)*((1.0*z_cells)/current_z)
current_metric = surface/volume
IF(current_metric < best_metric) THEN
chunk_x=current_x
chunk_y=current_y
chunk_z=current_z
best_metric=current_metric
ENDIF
ENDDO
ENDDO
! Set up chunk mesh ranges and chunk connectivity
delta_x=x_cells/chunk_x
delta_y=y_cells/chunk_y
delta_z=z_cells/chunk_z
mod_x=MOD(x_cells,chunk_x)
mod_y=MOD(y_cells,chunk_y)
mod_z=MOD(z_cells,chunk_z)
add_x_prev=0
add_y_prev=0
add_z_prev=0
chunk=1
DO cz=1,chunk_z
DO cy=1,chunk_y
DO cx=1,chunk_x
add_x=0
add_y=0
add_z=0
IF(cx.LE.mod_x)add_x=1
IF(cy.LE.mod_y)add_y=1
IF(cz.LE.mod_z)add_z=1
IF (chunk .EQ. parallel%task+1) THEN
! Mesh chunks
left(1)=(cx-1)*delta_x+1+add_x_prev
right(1)=left(1)+delta_x-1+add_x
bottom(1)=(cy-1)*delta_y+1+add_y_prev
top(1)=bottom(1)+delta_y-1+add_y
back(1)=(cz-1)*delta_z+1+add_z_prev
front(1)=back(1)+delta_z-1+add_z
! Chunk connectivity
chunks(1)%chunk_neighbours(chunk_left)= chunk-1
chunks(1)%chunk_neighbours(chunk_right)= chunk+1
chunks(1)%chunk_neighbours(chunk_bottom)=chunk-chunk_x
chunks(1)%chunk_neighbours(chunk_top)= chunk+chunk_x
chunks(1)%chunk_neighbours(chunk_back)= chunk-chunk_x*chunk_y
chunks(1)%chunk_neighbours(chunk_front)= chunk+chunk_x*chunk_y
IF(cx.EQ.1)chunks(1)%chunk_neighbours(chunk_left)=external_face
IF(cx.EQ.chunk_x)chunks(1)%chunk_neighbours(chunk_right)=external_face
IF(cy.EQ.1)chunks(1)%chunk_neighbours(chunk_bottom)=external_face
IF(cy.EQ.chunk_y)chunks(1)%chunk_neighbours(chunk_top)=external_face
IF(cz.EQ.1)chunks(1)%chunk_neighbours(chunk_back)=external_face
IF(cz.EQ.chunk_z)chunks(1)%chunk_neighbours(chunk_front)=external_face
ENDIF
IF(cx.LE.mod_x)add_x_prev=add_x_prev+1
chunk=chunk+1
ENDDO
add_x_prev=0
IF(cy.LE.mod_y)add_y_prev=add_y_prev+1
ENDDO
add_x_prev=0
add_y_prev=0
IF(cz.LE.mod_z)add_z_prev=add_z_prev+1
ENDDO
IF(parallel%boss)THEN
WRITE(g_out,*)
WRITE(g_out,*)"Decomposing the mesh into ",chunk_x," by ",chunk_y," by ",chunk_z," chunks"
WRITE(g_out,*)
ENDIF
END SUBROUTINE clover_decompose
SUBROUTINE clover_allocate_buffers(chunk)
IMPLICIT NONE
INTEGER :: chunk
! Unallocated buffers for external boundaries caused issues on some systems so they are now
! all allocated
IF(parallel%task.EQ.chunks(chunk)%task)THEN
ALLOCATE(chunks(chunk)%left_snd_buffer(19*2*(chunks(chunk)%field%y_max+5)*(chunks(chunk)%field%z_max+5)))
ALLOCATE(chunks(chunk)%left_rcv_buffer(19*2*(chunks(chunk)%field%y_max+5)*(chunks(chunk)%field%z_max+5)))
ALLOCATE(chunks(chunk)%right_snd_buffer(19*2*(chunks(chunk)%field%y_max+5)*(chunks(chunk)%field%z_max+5)))
ALLOCATE(chunks(chunk)%right_rcv_buffer(19*2*(chunks(chunk)%field%y_max+5)*(chunks(chunk)%field%z_max+5)))
ALLOCATE(chunks(chunk)%bottom_snd_buffer(19*2*(chunks(chunk)%field%x_max+5)*(chunks(chunk)%field%z_max+5)))
ALLOCATE(chunks(chunk)%bottom_rcv_buffer(19*2*(chunks(chunk)%field%x_max+5)*(chunks(chunk)%field%z_max+5)))
ALLOCATE(chunks(chunk)%top_snd_buffer(19*2*(chunks(chunk)%field%x_max+5)*(chunks(chunk)%field%z_max+5)))
ALLOCATE(chunks(chunk)%top_rcv_buffer(19*2*(chunks(chunk)%field%x_max+5)*(chunks(chunk)%field%z_max+5)))
ALLOCATE(chunks(chunk)%back_snd_buffer(19*2*(chunks(chunk)%field%x_max+5)*(chunks(chunk)%field%y_max+5)))
ALLOCATE(chunks(chunk)%back_rcv_buffer(19*2*(chunks(chunk)%field%x_max+5)*(chunks(chunk)%field%y_max+5)))
ALLOCATE(chunks(chunk)%front_snd_buffer(19*2*(chunks(chunk)%field%x_max+5)*(chunks(chunk)%field%y_max+5)))
ALLOCATE(chunks(chunk)%front_rcv_buffer(19*2*(chunks(chunk)%field%x_max+5)*(chunks(chunk)%field%y_max+5)))
ENDIF
END SUBROUTINE clover_allocate_buffers
SUBROUTINE clover_exchange(fields,depth)
IMPLICIT NONE
INTEGER :: fields(:),depth, chunk
INTEGER :: left_right_offset(19),bottom_top_offset(19),back_front_offset(19)
INTEGER :: request(4)
INTEGER :: message_count,err
INTEGER :: status(MPI_STATUS_SIZE,4)
INTEGER :: end_pack_index_left_right, end_pack_index_bottom_top,end_pack_index_back_front,field
! Assuming 1 patch per task, this will be changed
request=0
message_count=0
chunk = 1
end_pack_index_left_right=0
end_pack_index_bottom_top=0
end_pack_index_back_front=0
DO field=1,19
IF(fields(field).EQ.1) THEN
left_right_offset(field)=end_pack_index_left_right
bottom_top_offset(field)=end_pack_index_bottom_top
back_front_offset(field)=end_pack_index_back_front
end_pack_index_left_right=end_pack_index_left_right+depth*(chunks(chunk)%field%y_max+5)*(chunks(chunk)%field%z_max+5)
end_pack_index_bottom_top=end_pack_index_bottom_top+depth*(chunks(chunk)%field%x_max+5)*(chunks(chunk)%field%z_max+5)
end_pack_index_back_front=end_pack_index_back_front+depth*(chunks(chunk)%field%x_max+5)*(chunks(chunk)%field%y_max+5)
ENDIF
ENDDO
IF(chunks(chunk)%chunk_neighbours(chunk_left).NE.external_face) THEN
! do left exchanges
CALL clover_pack_left(chunk, fields, depth, left_right_offset)
!send and recv messagse to the left
CALL clover_send_recv_message_left(chunks(chunk)%left_snd_buffer, &
chunks(chunk)%left_rcv_buffer, &
chunk,end_pack_index_left_right, &
1, 2, &
request(message_count+1), request(message_count+2))
message_count = message_count + 2
ENDIF
IF(chunks(chunk)%chunk_neighbours(chunk_right).NE.external_face) THEN
! do right exchanges
CALL clover_pack_right(chunk, fields, depth, left_right_offset)
!send message to the right
CALL clover_send_recv_message_right(chunks(chunk)%right_snd_buffer, &
chunks(chunk)%right_rcv_buffer, &
chunk,end_pack_index_left_right, &
2, 1, &
request(message_count+1), request(message_count+2))
message_count = message_count + 2
ENDIF
!make a call to wait / sync
CALL MPI_WAITALL(message_count,request,status,err)
!unpack in left direction
IF(chunks(chunk)%chunk_neighbours(chunk_left).NE.external_face) THEN
CALL clover_unpack_left(fields, chunk, depth, &
chunks(chunk)%left_rcv_buffer, &
left_right_offset)
ENDIF
!unpack in right direction
IF(chunks(chunk)%chunk_neighbours(chunk_right).NE.external_face) THEN
CALL clover_unpack_right(fields, chunk, depth, &
chunks(chunk)%right_rcv_buffer, &
left_right_offset)
ENDIF
message_count = 0
request = 0
IF(chunks(chunk)%chunk_neighbours(chunk_bottom).NE.external_face) THEN
! do bottom exchanges
CALL clover_pack_bottom(chunk, fields, depth, bottom_top_offset)
!send message downwards
CALL clover_send_recv_message_bottom(chunks(chunk)%bottom_snd_buffer, &
chunks(chunk)%bottom_rcv_buffer, &
chunk,end_pack_index_bottom_top, &
3, 4, &
request(message_count+1), request(message_count+2))
message_count = message_count + 2
ENDIF
IF(chunks(chunk)%chunk_neighbours(chunk_top).NE.external_face) THEN
! do top exchanges
CALL clover_pack_top(chunk, fields, depth, bottom_top_offset)
!send message upwards
CALL clover_send_recv_message_top(chunks(chunk)%top_snd_buffer, &
chunks(chunk)%top_rcv_buffer, &
chunk,end_pack_index_bottom_top, &
4, 3, &
request(message_count+1), request(message_count+2))
message_count = message_count + 2
ENDIF
!need to make a call to wait / sync
CALL MPI_WAITALL(message_count,request,status,err)
!unpack in top direction
IF( chunks(chunk)%chunk_neighbours(chunk_top).NE.external_face ) THEN
CALL clover_unpack_top(fields, chunk, depth, &
chunks(chunk)%top_rcv_buffer, &
bottom_top_offset)
ENDIF
!unpack in bottom direction
IF(chunks(chunk)%chunk_neighbours(chunk_bottom).NE.external_face) THEN
CALL clover_unpack_bottom(fields, chunk, depth, &
chunks(chunk)%bottom_rcv_buffer, &
bottom_top_offset)
ENDIF
message_count = 0
request = 0
IF(chunks(chunk)%chunk_neighbours(chunk_back).NE.external_face) THEN
! do back exchanges
CALL clover_pack_back(chunk, fields, depth, back_front_offset)
!send message downwards
CALL clover_send_recv_message_back(chunks(chunk)%back_snd_buffer, &
chunks(chunk)%back_rcv_buffer, &
chunk,end_pack_index_back_front, &
5, 6, &
request(message_count+1), request(message_count+2))
message_count = message_count + 2
ENDIF
IF(chunks(chunk)%chunk_neighbours(chunk_front).NE.external_face) THEN
! do top exchanges
CALL clover_pack_front(chunk, fields, depth, back_front_offset)
!send message upwards
CALL clover_send_recv_message_front(chunks(chunk)%front_snd_buffer, &
chunks(chunk)%front_rcv_buffer, &
chunk,end_pack_index_back_front, &
6, 5, &
request(message_count+1), request(message_count+2))
message_count = message_count + 2
ENDIF
!need to make a call to wait / sync
CALL MPI_WAITALL(message_count,request,status,err)
!unpack in front direction
IF( chunks(chunk)%chunk_neighbours(chunk_front).NE.external_face ) THEN
CALL clover_unpack_front(fields, chunk, depth, &
chunks(chunk)%front_rcv_buffer, &
back_front_offset)
ENDIF
!unpack in back direction
IF(chunks(chunk)%chunk_neighbours(chunk_back).NE.external_face) THEN
CALL clover_unpack_back(fields, chunk, depth, &
chunks(chunk)%back_rcv_buffer, &
back_front_offset)
ENDIF
END SUBROUTINE clover_exchange
SUBROUTINE clover_pack_left(chunk, fields, depth, left_right_offset)
USE pack_kernel_module
IMPLICIT NONE
INTEGER :: fields(:),depth, chunk
INTEGER :: left_right_offset(:)
IF(fields(FIELD_DENSITY0).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL clover_pack_message_left(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%z_min, &
chunks(chunk)%field%z_max, &
chunks(chunk)%field%density0, &
chunks(chunk)%left_snd_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,Z_FACE_DATA, &
depth, CELL_DATA, &
left_right_offset(FIELD_DENSITY0))
ENDIF
ENDIF
IF(fields(FIELD_DENSITY1).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL clover_pack_message_left(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%z_min, &
chunks(chunk)%field%z_max, &
chunks(chunk)%field%density1, &
chunks(chunk)%left_snd_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,Z_FACE_DATA, &
depth, CELL_DATA, &
left_right_offset(FIELD_DENSITY1))
ENDIF
ENDIF
IF(fields(FIELD_ENERGY0).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL clover_pack_message_left(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%z_min, &
chunks(chunk)%field%z_max, &
chunks(chunk)%field%energy0, &
chunks(chunk)%left_snd_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,Z_FACE_DATA, &
depth, CELL_DATA, &
left_right_offset(FIELD_ENERGY0))
ENDIF
ENDIF
IF(fields(FIELD_ENERGY1).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL clover_pack_message_left(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%z_min, &
chunks(chunk)%field%z_max, &
chunks(chunk)%field%energy1, &
chunks(chunk)%left_snd_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,Z_FACE_DATA, &
depth, CELL_DATA, &
left_right_offset(FIELD_ENERGY1))
ENDIF
ENDIF
IF(fields(FIELD_PRESSURE).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL clover_pack_message_left(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%z_min, &
chunks(chunk)%field%z_max, &
chunks(chunk)%field%pressure, &
chunks(chunk)%left_snd_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,Z_FACE_DATA, &
depth, CELL_DATA, &
left_right_offset(FIELD_PRESSURE))
ENDIF
ENDIF
IF(fields(FIELD_VISCOSITY).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL clover_pack_message_left(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%z_min, &
chunks(chunk)%field%z_max, &
chunks(chunk)%field%viscosity, &
chunks(chunk)%left_snd_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,Z_FACE_DATA, &
depth, CELL_DATA, &
left_right_offset(FIELD_VISCOSITY))
ENDIF
ENDIF
IF(fields(FIELD_SOUNDSPEED).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL clover_pack_message_left(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%z_min, &
chunks(chunk)%field%z_max, &
chunks(chunk)%field%soundspeed, &
chunks(chunk)%left_snd_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,Z_FACE_DATA, &
depth, CELL_DATA, &
left_right_offset(FIELD_SOUNDSPEED))
ENDIF
ENDIF
IF(fields(FIELD_XVEL0).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL clover_pack_message_left(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%z_min, &
chunks(chunk)%field%z_max, &
chunks(chunk)%field%xvel0, &
chunks(chunk)%left_snd_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,Z_FACE_DATA, &
depth, VERTEX_DATA, &
left_right_offset(FIELD_XVEL0))
ENDIF
ENDIF
IF(fields(FIELD_XVEL1).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL clover_pack_message_left(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%z_min, &
chunks(chunk)%field%z_max, &
chunks(chunk)%field%xvel1, &
chunks(chunk)%left_snd_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,Z_FACE_DATA, &
depth, VERTEX_DATA, &
left_right_offset(FIELD_XVEL1))
ENDIF
ENDIF
IF(fields(FIELD_YVEL0).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL clover_pack_message_left(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%z_min, &
chunks(chunk)%field%z_max, &
chunks(chunk)%field%yvel0, &
chunks(chunk)%left_snd_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,Z_FACE_DATA, &
depth, VERTEX_DATA, &
left_right_offset(FIELD_YVEL0))
ENDIF
ENDIF
IF(fields(FIELD_YVEL1).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL clover_pack_message_left(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%z_min, &
chunks(chunk)%field%z_max, &
chunks(chunk)%field%yvel1, &
chunks(chunk)%left_snd_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,Z_FACE_DATA, &
depth, VERTEX_DATA, &
left_right_offset(FIELD_YVEL1))
ENDIF
ENDIF
IF(fields(FIELD_ZVEL0).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL clover_pack_message_left(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%z_min, &
chunks(chunk)%field%z_max, &
chunks(chunk)%field%zvel0, &
chunks(chunk)%left_snd_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,Z_FACE_DATA, &
depth, VERTEX_DATA, &
left_right_offset(FIELD_ZVEL0))
ENDIF
ENDIF
IF(fields(FIELD_ZVEL1).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL clover_pack_message_left(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%z_min, &
chunks(chunk)%field%z_max, &
chunks(chunk)%field%zvel1, &
chunks(chunk)%left_snd_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,Z_FACE_DATA, &
depth, VERTEX_DATA, &
left_right_offset(FIELD_ZVEL1))
ENDIF
ENDIF
IF(fields(FIELD_VOL_FLUX_X).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL clover_pack_message_left(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%z_min, &
chunks(chunk)%field%z_max, &
chunks(chunk)%field%vol_flux_x, &
chunks(chunk)%left_snd_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,Z_FACE_DATA, &
depth, X_FACE_DATA, &
left_right_offset(FIELD_VOL_FLUX_X))
ENDIF
ENDIF
IF(fields(FIELD_VOL_FLUX_Y).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL clover_pack_message_left(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%z_min, &
chunks(chunk)%field%z_max, &
chunks(chunk)%field%vol_flux_y, &
chunks(chunk)%left_snd_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,Z_FACE_DATA, &
depth, Y_FACE_DATA, &
left_right_offset(FIELD_VOL_FLUX_Y))
ENDIF
ENDIF
IF(fields(FIELD_VOL_FLUX_Z).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL clover_pack_message_left(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%z_min, &
chunks(chunk)%field%z_max, &
chunks(chunk)%field%vol_flux_z, &
chunks(chunk)%left_snd_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,Z_FACE_DATA, &
depth, Z_FACE_DATA, &
left_right_offset(FIELD_VOL_FLUX_Z))
ENDIF
ENDIF
IF(fields(FIELD_MASS_FLUX_X).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL clover_pack_message_left(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%z_min, &
chunks(chunk)%field%z_max, &
chunks(chunk)%field%mass_flux_x, &
chunks(chunk)%left_snd_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,Z_FACE_DATA, &
depth, X_FACE_DATA, &
left_right_offset(FIELD_MASS_FLUX_X))
ENDIF
ENDIF
IF(fields(FIELD_MASS_FLUX_Y).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL clover_pack_message_left(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%z_min, &
chunks(chunk)%field%z_max, &
chunks(chunk)%field%mass_flux_y, &
chunks(chunk)%left_snd_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,Z_FACE_DATA, &
depth, Y_FACE_DATA, &
left_right_offset(FIELD_MASS_FLUX_Y))
ENDIF
ENDIF
IF(fields(FIELD_MASS_FLUX_Z).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL clover_pack_message_left(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%z_min, &
chunks(chunk)%field%z_max, &
chunks(chunk)%field%mass_flux_z, &
chunks(chunk)%left_snd_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,Z_FACE_DATA, &
depth, Z_FACE_DATA, &
left_right_offset(FIELD_MASS_FLUX_Z))
ENDIF
ENDIF
END SUBROUTINE clover_pack_left
SUBROUTINE clover_send_recv_message_left(left_snd_buffer, left_rcv_buffer, &
chunk, total_size, &
tag_send, tag_recv, &
req_send, req_recv)
REAL(KIND=8) :: left_snd_buffer(:), left_rcv_buffer(:)
INTEGER :: left_task
INTEGER :: chunk
INTEGER :: total_size, tag_send, tag_recv, err
INTEGER :: req_send, req_recv
left_task =chunks(chunk)%chunk_neighbours(chunk_left) - 1
CALL MPI_ISEND(left_snd_buffer,total_size,MPI_DOUBLE_PRECISION,left_task,tag_send &
,MPI_COMM_WORLD,req_send,err)
CALL MPI_IRECV(left_rcv_buffer,total_size,MPI_DOUBLE_PRECISION,left_task,tag_recv &
,MPI_COMM_WORLD,req_recv,err)
END SUBROUTINE clover_send_recv_message_left
SUBROUTINE clover_unpack_left(fields, chunk, depth, &
left_rcv_buffer, &
left_right_offset)
USE pack_kernel_module
IMPLICIT NONE
INTEGER :: fields(:), chunk, depth
INTEGER :: left_right_offset(:)
REAL(KIND=8) :: left_rcv_buffer(:)
IF(fields(FIELD_DENSITY0).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL clover_unpack_message_left(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%z_min, &
chunks(chunk)%field%z_max, &
chunks(chunk)%field%density0, &
chunks(chunk)%left_rcv_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,Z_FACE_DATA, &
depth, CELL_DATA, &
left_right_offset(FIELD_DENSITY0))
ENDIF
ENDIF
IF(fields(FIELD_DENSITY1).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL clover_unpack_message_left(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%z_min, &
chunks(chunk)%field%z_max, &
chunks(chunk)%field%density1, &
chunks(chunk)%left_rcv_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,Z_FACE_DATA, &
depth, CELL_DATA, &
left_right_offset(FIELD_DENSITY1))
ENDIF
ENDIF
IF(fields(FIELD_ENERGY0).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL clover_unpack_message_left(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%z_min, &
chunks(chunk)%field%z_max, &
chunks(chunk)%field%energy0, &
chunks(chunk)%left_rcv_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,Z_FACE_DATA, &
depth, CELL_DATA, &
left_right_offset(FIELD_ENERGY0))
ENDIF
ENDIF
IF(fields(FIELD_ENERGY1).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL clover_unpack_message_left(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%z_min, &
chunks(chunk)%field%z_max, &
chunks(chunk)%field%energy1, &
chunks(chunk)%left_rcv_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,Z_FACE_DATA, &
depth, CELL_DATA, &
left_right_offset(FIELD_ENERGY1))
ENDIF
ENDIF
IF(fields(FIELD_PRESSURE).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL clover_unpack_message_left(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%z_min, &
chunks(chunk)%field%z_max, &
chunks(chunk)%field%pressure, &
chunks(chunk)%left_rcv_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,Z_FACE_DATA, &
depth, CELL_DATA, &
left_right_offset(FIELD_PRESSURE))
ENDIF
ENDIF
IF(fields(FIELD_VISCOSITY).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL clover_unpack_message_left(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%z_min, &
chunks(chunk)%field%z_max, &
chunks(chunk)%field%viscosity, &
chunks(chunk)%left_rcv_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,Z_FACE_DATA, &
depth, CELL_DATA, &
left_right_offset(FIELD_VISCOSITY))
ENDIF
ENDIF
IF(fields(FIELD_SOUNDSPEED).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL clover_unpack_message_left(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%z_min, &
chunks(chunk)%field%z_max, &
chunks(chunk)%field%soundspeed, &
chunks(chunk)%left_rcv_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,Z_FACE_DATA, &
depth, CELL_DATA, &
left_right_offset(FIELD_SOUNDSPEED))
ENDIF
ENDIF
IF(fields(FIELD_XVEL0).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL clover_unpack_message_left(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%z_min, &
chunks(chunk)%field%z_max, &
chunks(chunk)%field%xvel0, &
chunks(chunk)%left_rcv_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,Z_FACE_DATA, &
depth, VERTEX_DATA, &
left_right_offset(FIELD_XVEL0))
ENDIF
ENDIF
IF(fields(FIELD_XVEL1).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL clover_unpack_message_left(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%z_min, &
chunks(chunk)%field%z_max, &
chunks(chunk)%field%xvel1, &
chunks(chunk)%left_rcv_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,Z_FACE_DATA, &
depth, VERTEX_DATA, &
left_right_offset(FIELD_XVEL1))
ENDIF
ENDIF
IF(fields(FIELD_YVEL0).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL clover_unpack_message_left(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%z_min, &
chunks(chunk)%field%z_max, &
chunks(chunk)%field%yvel0, &
chunks(chunk)%left_rcv_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,Z_FACE_DATA, &
depth, VERTEX_DATA, &
left_right_offset(FIELD_YVEL0))
ENDIF
ENDIF
IF(fields(FIELD_YVEL1).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL clover_unpack_message_left(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%z_min, &
chunks(chunk)%field%z_max, &
chunks(chunk)%field%yvel1, &
chunks(chunk)%left_rcv_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,Z_FACE_DATA, &
depth, VERTEX_DATA, &
left_right_offset(FIELD_YVEL1))
ENDIF
ENDIF
IF(fields(FIELD_ZVEL0).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL clover_unpack_message_left(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%z_min, &
chunks(chunk)%field%z_max, &
chunks(chunk)%field%zvel0, &
chunks(chunk)%left_rcv_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,Z_FACE_DATA, &
depth, VERTEX_DATA, &
left_right_offset(FIELD_ZVEL0))
ENDIF
ENDIF
IF(fields(FIELD_ZVEL1).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL clover_unpack_message_left(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%z_min, &
chunks(chunk)%field%z_max, &
chunks(chunk)%field%zvel1, &
chunks(chunk)%left_rcv_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,Z_FACE_DATA, &
depth, VERTEX_DATA, &
left_right_offset(FIELD_ZVEL1))
ENDIF
ENDIF
IF(fields(FIELD_VOL_FLUX_X).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL clover_unpack_message_left(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%z_min, &
chunks(chunk)%field%z_max, &
chunks(chunk)%field%vol_flux_x, &
chunks(chunk)%left_rcv_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,Z_FACE_DATA, &
depth, X_FACE_DATA, &
left_right_offset(FIELD_VOL_FLUX_X))
ENDIF
ENDIF
IF(fields(FIELD_VOL_FLUX_Y).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL clover_unpack_message_left(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%z_min, &
chunks(chunk)%field%z_max, &
chunks(chunk)%field%vol_flux_y, &
chunks(chunk)%left_rcv_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,Z_FACE_DATA, &
depth, Y_FACE_DATA, &
left_right_offset(FIELD_VOL_FLUX_Y))
ENDIF
ENDIF
IF(fields(FIELD_VOL_FLUX_Z).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL clover_unpack_message_left(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%z_min, &
chunks(chunk)%field%z_max, &
chunks(chunk)%field%vol_flux_z, &
chunks(chunk)%left_rcv_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,Z_FACE_DATA, &
depth, Z_FACE_DATA, &