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tea.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 Communication Utilities
!> @author David Beckingsale, Wayne Gaudin
!> @details Contains all utilities required to run TeaLeaf 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 TeaLeaf weak scales well on moderately sized
!> systems of the order of 10K cores.
MODULE tea_module
USE data_module
USE definitions_module
USE MPI
IMPLICIT NONE
CONTAINS
SUBROUTINE tea_barrier
INTEGER :: err
CALL MPI_BARRIER(MPI_COMM_WORLD,err)
END SUBROUTINE tea_barrier
SUBROUTINE tea_abort
INTEGER :: ierr,err
CALL MPI_ABORT(MPI_COMM_WORLD,ierr,err)
END SUBROUTINE tea_abort
SUBROUTINE tea_finalize
INTEGER :: err
CLOSE(g_out)
CALL FLUSH(0)
CALL FLUSH(6)
CALL FLUSH(g_out)
CALL MPI_FINALIZE(err)
END SUBROUTINE tea_finalize
SUBROUTINE tea_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 tea_init_comms
SUBROUTINE tea_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 tea_get_num_chunks
SUBROUTINE tea_decompose(x_cells,y_cells,left,right,bottom,top)
! This decomposes the mesh into a number of chunks.
! The number of chunks may be a multiple of the number of mpi tasks
! Doesn't always return the best split if there are few factors
! All factors need to be stored and the best picked. But its ok for now
IMPLICIT NONE
INTEGER :: x_cells,y_cells,left(:),right(:),top(:),bottom(:)
INTEGER :: c,delta_x,delta_y
REAL(KIND=8) :: mesh_ratio,factor_x,factor_y
INTEGER :: chunk_x,chunk_y,mod_x,mod_y,split_found
INTEGER :: cx,cy,chunk,add_x,add_y,add_x_prev,add_y_prev
INTEGER :: lft,rght,tp,bttm
! 2D Decomposition of the mesh
mesh_ratio=real(x_cells)/real(y_cells)
chunk_x=number_of_chunks
chunk_y=1
split_found=0 ! Used to detect 1D decomposition
DO c=1,number_of_chunks
IF (MOD(number_of_chunks,c).EQ.0) THEN
factor_x=number_of_chunks/real(c)
factor_y=c
!Compare the factor ratio with the mesh ratio
IF(factor_x/factor_y.LE.mesh_ratio) THEN
chunk_y=c
chunk_x=number_of_chunks/c
split_found=1
EXIT
ENDIF
ENDIF
ENDDO
IF(split_found.EQ.0.OR.chunk_y.EQ.number_of_chunks) THEN ! Prime number or 1D decomp detected
IF(mesh_ratio.GE.1.0) THEN
chunk_x=number_of_chunks
chunk_y=1
ELSE
chunk_x=1
chunk_y=number_of_chunks
ENDIF
ENDIF
delta_x=x_cells/chunk_x
delta_y=y_cells/chunk_y
mod_x=MOD(x_cells,chunk_x)
mod_y=MOD(y_cells,chunk_y)
! Set up chunk mesh ranges and chunk connectivity
ALLOCATE(lx(chunk_x))
ALLOCATE(ly(chunk_y))
add_x_prev=0
add_y_prev=0
chunk=1
DO cy=1,chunk_y
DO cx=1,chunk_x
add_x=0
add_y=0
IF(cx.LE.mod_x)add_x=1
IF(cy.LE.mod_y)add_y=1
IF (chunk .EQ. parallel%task+1) THEN
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
chunks(1)%chunk_neighbours(chunk_left)=chunk_x*(cy-1)+cx-1
chunks(1)%chunk_neighbours(chunk_right)=chunk_x*(cy-1)+cx+1
chunks(1)%chunk_neighbours(chunk_bottom)=chunk_x*(cy-2)+cx
chunks(1)%chunk_neighbours(chunk_top)=chunk_x*(cy)+cx
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
ENDIF
!PETSc needs the global info on every process
lft = (cx-1)*delta_x+1+add_x_prev
rght = lft+delta_x-1+add_x
bttm = (cy-1)*delta_y+1+add_y_prev
tp = bttm+delta_y-1+add_y
lx(cx)=rght-lft+1
ly(cy)=tp-bttm+1
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
px = chunk_x
py = chunk_y
IF(parallel%boss)THEN
WRITE(g_out,*)
WRITE(g_out,*)"Mesh ratio of ",mesh_ratio
WRITE(g_out,*)"Decomposing the mesh into ",chunk_x," by ",chunk_y," chunks"
WRITE(g_out,*)
ENDIF
END SUBROUTINE tea_decompose
SUBROUTINE tea_allocate_buffers(chunk)
IMPLICIT NONE
INTEGER :: chunk
lr_pack_buffer_size = (chunks(chunk)%field%y_max+5)
bt_pack_buffer_size = (chunks(chunk)%field%x_max+5)
! Unallocated buffers for external boundaries caused issues on some systems so they are now
! all allocated
IF(parallel%task.EQ.chunks(chunk)%task)THEN
!IF(chunks(chunk)%chunk_neighbours(chunk_left).NE.external_face) THEN
ALLOCATE(chunks(chunk)%left_snd_buffer(6*(chunks(chunk)%field%y_max+5)))
ALLOCATE(chunks(chunk)%left_rcv_buffer(6*(chunks(chunk)%field%y_max+5)))
!ENDIF
!IF(chunks(chunk)%chunk_neighbours(chunk_right).NE.external_face) THEN
ALLOCATE(chunks(chunk)%right_snd_buffer(6*(chunks(chunk)%field%y_max+5)))
ALLOCATE(chunks(chunk)%right_rcv_buffer(6*(chunks(chunk)%field%y_max+5)))
!ENDIF
!IF(chunks(chunk)%chunk_neighbours(chunk_bottom).NE.external_face) THEN
ALLOCATE(chunks(chunk)%bottom_snd_buffer(6*(chunks(chunk)%field%x_max+5)))
ALLOCATE(chunks(chunk)%bottom_rcv_buffer(6*(chunks(chunk)%field%x_max+5)))
!ENDIF
!IF(chunks(chunk)%chunk_neighbours(chunk_top).NE.external_face) THEN
ALLOCATE(chunks(chunk)%top_snd_buffer(6*(chunks(chunk)%field%x_max+5)))
ALLOCATE(chunks(chunk)%top_rcv_buffer(6*(chunks(chunk)%field%x_max+5)))
!ENDIF
ENDIF
END SUBROUTINE tea_allocate_buffers
SUBROUTINE tea_exchange(fields,depth)
IMPLICIT NONE
INTEGER :: fields(NUM_FIELDS),depth, chunk
INTEGER :: left_right_offset(NUM_FIELDS),bottom_top_offset(NUM_FIELDS)
INTEGER :: request(4)
INTEGER :: message_count,err
INTEGER :: status(MPI_STATUS_SIZE,4)
INTEGER :: end_pack_index_left_right, end_pack_index_bottom_top,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
left_right_offset = 0
bottom_top_offset = 0
DO field=1,NUM_FIELDS
IF(fields(field).EQ.1) THEN
left_right_offset(field)=end_pack_index_left_right
bottom_top_offset(field)=end_pack_index_bottom_top
end_pack_index_left_right=end_pack_index_left_right + depth*lr_pack_buffer_size
end_pack_index_bottom_top=end_pack_index_bottom_top + depth*bt_pack_buffer_size
ENDIF
ENDDO
IF(chunks(chunk)%chunk_neighbours(chunk_left).NE.external_face) THEN
! do left exchanges
CALL tea_pack_left(chunk, fields, depth, left_right_offset)
!send and recv messagse to the left
CALL tea_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 tea_pack_right(chunk, fields, depth, left_right_offset)
!send message to the right
CALL tea_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 tea_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 tea_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 tea_pack_bottom(chunk, fields, depth, bottom_top_offset)
!send message downwards
CALL tea_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 tea_pack_top(chunk, fields, depth, bottom_top_offset)
!send message upwards
CALL tea_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 tea_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 tea_unpack_bottom(fields, chunk, depth, &
chunks(chunk)%bottom_rcv_buffer, &
bottom_top_offset)
ENDIF
END SUBROUTINE tea_exchange
SUBROUTINE tea_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_DENSITY).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL tea_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%density, &
chunks(chunk)%left_snd_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,&
depth, CELL_DATA, &
left_right_offset(FIELD_DENSITY))
ENDIF
ENDIF
IF(fields(FIELD_ENERGY0).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL tea_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%energy0, &
chunks(chunk)%left_snd_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_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 tea_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%energy1, &
chunks(chunk)%left_snd_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,&
depth, CELL_DATA, &
left_right_offset(FIELD_ENERGY1))
ENDIF
ENDIF
IF(fields(FIELD_P).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL tea_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%vector_p, &
chunks(chunk)%left_snd_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,&
depth, CELL_DATA, &
left_right_offset(FIELD_P))
ENDIF
ENDIF
IF(fields(FIELD_U).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL tea_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%u, &
chunks(chunk)%left_snd_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,&
depth, CELL_DATA, &
left_right_offset(FIELD_U))
ENDIF
ENDIF
IF(fields(FIELD_SD).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL tea_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%vector_sd, &
chunks(chunk)%left_snd_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,&
depth, CELL_DATA, &
left_right_offset(FIELD_SD))
ENDIF
ENDIF
END SUBROUTINE tea_pack_left
SUBROUTINE tea_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 tea_send_recv_message_left
SUBROUTINE tea_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_DENSITY).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL tea_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%density, &
chunks(chunk)%left_rcv_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,&
depth, CELL_DATA, &
left_right_offset(FIELD_DENSITY))
ENDIF
ENDIF
IF(fields(FIELD_ENERGY0).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL tea_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%energy0, &
chunks(chunk)%left_rcv_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_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 tea_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%energy1, &
chunks(chunk)%left_rcv_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,&
depth, CELL_DATA, &
left_right_offset(FIELD_ENERGY1))
ENDIF
ENDIF
IF(fields(FIELD_P).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL tea_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%vector_p, &
chunks(chunk)%left_rcv_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,&
depth, CELL_DATA, &
left_right_offset(FIELD_P))
ENDIF
ENDIF
IF(fields(FIELD_U).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL tea_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%u, &
chunks(chunk)%left_rcv_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,&
depth, CELL_DATA, &
left_right_offset(FIELD_U))
ENDIF
ENDIF
IF(fields(FIELD_SD).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL tea_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%vector_sd, &
chunks(chunk)%left_rcv_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,&
depth, CELL_DATA, &
left_right_offset(FIELD_SD))
ENDIF
ENDIF
END SUBROUTINE tea_unpack_left
SUBROUTINE tea_pack_right(chunk, fields, depth, left_right_offset)
USE pack_kernel_module
IMPLICIT NONE
INTEGER :: chunk, fields(:), depth, tot_packr, left_right_offset(:)
IF(fields(FIELD_DENSITY).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL tea_pack_message_right(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%density, &
chunks(chunk)%right_snd_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,&
depth, CELL_DATA, &
left_right_offset(FIELD_DENSITY))
ENDIF
ENDIF
IF(fields(FIELD_ENERGY0).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL tea_pack_message_right(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%energy0, &
chunks(chunk)%right_snd_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_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 tea_pack_message_right(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%energy1, &
chunks(chunk)%right_snd_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,&
depth, CELL_DATA, &
left_right_offset(FIELD_ENERGY1))
ENDIF
ENDIF
IF(fields(FIELD_P).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL tea_pack_message_right(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%vector_p, &
chunks(chunk)%right_snd_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,&
depth, CELL_DATA, &
left_right_offset(FIELD_P))
ENDIF
ENDIF
IF(fields(FIELD_U).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL tea_pack_message_right(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%u, &
chunks(chunk)%right_snd_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,&
depth, CELL_DATA, &
left_right_offset(FIELD_U))
ENDIF
ENDIF
IF(fields(FIELD_SD).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL tea_pack_message_right(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%vector_sd, &
chunks(chunk)%right_snd_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,&
depth, CELL_DATA, &
left_right_offset(FIELD_SD))
ENDIF
ENDIF
END SUBROUTINE tea_pack_right
SUBROUTINE tea_send_recv_message_right(right_snd_buffer, right_rcv_buffer, &
chunk, total_size, &
tag_send, tag_recv, &
req_send, req_recv)
IMPLICIT NONE
REAL(KIND=8) :: right_snd_buffer(:), right_rcv_buffer(:)
INTEGER :: right_task
INTEGER :: chunk
INTEGER :: total_size, tag_send, tag_recv, err
INTEGER :: req_send, req_recv
right_task=chunks(chunk)%chunk_neighbours(chunk_right) - 1
CALL MPI_ISEND(right_snd_buffer,total_size,MPI_DOUBLE_PRECISION,right_task,tag_send, &
MPI_COMM_WORLD,req_send,err)
CALL MPI_IRECV(right_rcv_buffer,total_size,MPI_DOUBLE_PRECISION,right_task,tag_recv, &
MPI_COMM_WORLD,req_recv,err)
END SUBROUTINE tea_send_recv_message_right
SUBROUTINE tea_unpack_right(fields, chunk, depth, &
right_rcv_buffer, &
left_right_offset)
USE pack_kernel_module
IMPLICIT NONE
INTEGER :: fields(:), chunk, total_in_right_buff, depth, left_right_offset(:)
REAL(KIND=8) :: right_rcv_buffer(:)
IF(fields(FIELD_DENSITY).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL tea_unpack_message_right(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%density, &
chunks(chunk)%right_rcv_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,&
depth, CELL_DATA, &
left_right_offset(FIELD_DENSITY))
ENDIF
ENDIF
IF(fields(FIELD_ENERGY0).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL tea_unpack_message_right(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%energy0, &
chunks(chunk)%right_rcv_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_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 tea_unpack_message_right(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%energy1, &
chunks(chunk)%right_rcv_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,&
depth, CELL_DATA, &
left_right_offset(FIELD_ENERGY1))
ENDIF
ENDIF
IF(fields(FIELD_P).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL tea_unpack_message_right(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%vector_p, &
chunks(chunk)%right_rcv_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,&
depth, CELL_DATA, &
left_right_offset(FIELD_P))
ENDIF
ENDIF
IF(fields(FIELD_U).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL tea_unpack_message_right(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%u, &
chunks(chunk)%right_rcv_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,&
depth, CELL_DATA, &
left_right_offset(FIELD_U))
ENDIF
ENDIF
IF(fields(FIELD_SD).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL tea_unpack_message_right(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%vector_sd, &
chunks(chunk)%right_rcv_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,&
depth, CELL_DATA, &
left_right_offset(FIELD_SD))
ENDIF
ENDIF
END SUBROUTINE tea_unpack_right
SUBROUTINE tea_pack_top(chunk, fields, depth, bottom_top_offset)
USE pack_kernel_module
IMPLICIT NONE
INTEGER :: chunk, fields(:), depth, bottom_top_offset(:)
IF(fields(FIELD_DENSITY).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL tea_pack_message_top(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%density, &
chunks(chunk)%top_snd_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,&
depth, CELL_DATA, &
bottom_top_offset(FIELD_DENSITY))
ENDIF
ENDIF
IF(fields(FIELD_ENERGY0).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL tea_pack_message_top(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%energy0, &
chunks(chunk)%top_snd_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,&
depth, CELL_DATA, &
bottom_top_offset(FIELD_ENERGY0))
ENDIF
ENDIF
IF(fields(FIELD_ENERGY1).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL tea_pack_message_top(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%energy1, &
chunks(chunk)%top_snd_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,&
depth, CELL_DATA, &
bottom_top_offset(FIELD_ENERGY1))
ENDIF
ENDIF
IF(fields(FIELD_P).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL tea_pack_message_top(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%vector_p, &
chunks(chunk)%top_snd_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,&
depth, CELL_DATA, &
bottom_top_offset(FIELD_P))
ENDIF
ENDIF
IF(fields(FIELD_U).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL tea_pack_message_top(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%u, &
chunks(chunk)%top_snd_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,&
depth, CELL_DATA, &
bottom_top_offset(FIELD_U))
ENDIF
ENDIF
IF(fields(FIELD_SD).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL tea_pack_message_top(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%vector_sd, &
chunks(chunk)%top_snd_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,&
depth, CELL_DATA, &
bottom_top_offset(FIELD_SD))
ENDIF
ENDIF
END SUBROUTINE tea_pack_top
SUBROUTINE tea_send_recv_message_top(top_snd_buffer, top_rcv_buffer, &
chunk, total_size, &
tag_send, tag_recv, &
req_send, req_recv)
IMPLICIT NONE
REAL(KIND=8) :: top_snd_buffer(:), top_rcv_buffer(:)
INTEGER :: top_task
INTEGER :: chunk
INTEGER :: total_size, tag_send, tag_recv, err
INTEGER :: req_send, req_recv
top_task=chunks(chunk)%chunk_neighbours(chunk_top) - 1
CALL MPI_ISEND(top_snd_buffer,total_size,MPI_DOUBLE_PRECISION,top_task,tag_send, &
MPI_COMM_WORLD,req_send,err)
CALL MPI_IRECV(top_rcv_buffer,total_size,MPI_DOUBLE_PRECISION,top_task,tag_recv, &
MPI_COMM_WORLD,req_recv,err)
END SUBROUTINE tea_send_recv_message_top
SUBROUTINE tea_unpack_top(fields, chunk, depth, &
top_rcv_buffer, &
bottom_top_offset)
USE pack_kernel_module
IMPLICIT NONE
INTEGER :: fields(:), chunk, total_in_top_buff, depth, bottom_top_offset(:)
REAL(KIND=8) :: top_rcv_buffer(:)
IF(fields(FIELD_DENSITY).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL tea_unpack_message_top(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%density, &
chunks(chunk)%top_rcv_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,&
depth, CELL_DATA, &
bottom_top_offset(FIELD_DENSITY))
ENDIF
ENDIF
IF(fields(FIELD_ENERGY0).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL tea_unpack_message_top(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%energy0, &
chunks(chunk)%top_rcv_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,&
depth, CELL_DATA, &
bottom_top_offset(FIELD_ENERGY0))
ENDIF
ENDIF
IF(fields(FIELD_ENERGY1).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL tea_unpack_message_top(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%energy1, &
chunks(chunk)%top_rcv_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,&
depth, CELL_DATA, &
bottom_top_offset(FIELD_ENERGY1))
ENDIF
ENDIF
IF(fields(FIELD_P).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL tea_unpack_message_top(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%vector_p, &
chunks(chunk)%top_rcv_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,&
depth, CELL_DATA, &
bottom_top_offset(FIELD_P))
ENDIF
ENDIF
IF(fields(FIELD_U).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL tea_unpack_message_top(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%u, &
chunks(chunk)%top_rcv_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,&
depth, CELL_DATA, &
bottom_top_offset(FIELD_U))
ENDIF
ENDIF
IF(fields(FIELD_SD).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL tea_unpack_message_top(chunks(chunk)%field%x_min, &
chunks(chunk)%field%x_max, &
chunks(chunk)%field%y_min, &
chunks(chunk)%field%y_max, &
chunks(chunk)%field%vector_sd, &
chunks(chunk)%top_rcv_buffer, &
CELL_DATA,VERTEX_DATA,X_FACE_DATA,Y_FACE_DATA,&
depth, CELL_DATA, &
bottom_top_offset(FIELD_SD))
ENDIF
ENDIF
END SUBROUTINE tea_unpack_top
SUBROUTINE tea_pack_bottom(chunk, fields, depth, bottom_top_offset)
USE pack_kernel_module
IMPLICIT NONE
INTEGER :: chunk, fields(:), depth, tot_packb, bottom_top_offset(:)
IF(fields(FIELD_DENSITY).EQ.1) THEN
IF(use_fortran_kernels) THEN
CALL tea_pack_message_bottom(chunks(chunk)%field%x_min, &