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BOUNDARIES: Rewrite copy_boundaries().

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Signed-off-by: Grzegorz Kowal <grzegorz@amuncode.org>
This commit is contained in:
Grzegorz Kowal 2014-01-07 10:56:22 -02:00
parent c3321cc022
commit a1fcff9a66
1 changed files with 171 additions and 90 deletions
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223
src/boundaries.F90
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@ -1125,21 +1125,19 @@ module boundaries
! subroutine COPY_BOUNDARIES:
! --------------------------
!
! Subroutine scans over all leaf blocks in order to find neighbours at
! the same levels, then updates the boundaries between neighbours.
! Subroutine scans over all leaf blocks in order to find neighbors at
! the same level, and then updates the boundaries between them.
!
! Arguments:
!
! ilev - the level to be processed;
! idir - the direction to be processed;
!
!===============================================================================
!
subroutine copy_boundaries(ilev, idir)
! include external procedures
!
#ifdef MPI
use mpitools , only : send_real_array, receive_real_array
#endif /* MPI */
! include external variables
! import external procedures and variables
!
use blocks , only : ndims, nsides, nfaces
use blocks , only : block_meta, block_data, list_meta
@ -1148,11 +1146,13 @@ module boundaries
use coordinates , only : ng, nd, nh, im, jm, km
use coordinates , only : ib, jb, kb, ie, je, ke
use coordinates , only : ibu, jbu, kbu, iel, jel, kel
use mpitools , only : periodic
#ifdef MPI
use mpitools , only : nproc, nprocs, npmax
use equations , only : nv
#endif /* MPI */
use mpitools , only : nproc, nprocs, npmax, periodic
#ifdef MPI
use mpitools , only : send_real_array, receive_real_array
#endif /* MPI */
! local variables are not implicit by default
!
@ -1162,6 +1162,14 @@ module boundaries
!
integer, intent(in) :: ilev, idir
! local pointers
!
type(block_meta), pointer :: pmeta, pneigh
type(block_data), pointer :: pdata
#ifdef MPI
type(block_info), pointer :: pinfo
#endif /* MPI */
! local variables
!
integer :: iside, iface, nside, nface
@ -1170,20 +1178,15 @@ module boundaries
#ifdef MPI
integer :: isend, irecv, nblocks, itag, l
! local pointer arrays
!
type(pointer_info), dimension(0:npmax,0:npmax) :: block_array
! local arrays
!
integer , dimension(0:npmax,0:npmax) :: block_counter
real(kind=8), dimension(:,:,:,:,:), allocatable :: rbuf
#endif /* MPI */
! local pointers
!
type(block_meta), pointer :: pmeta, pneigh
type(block_data), pointer :: pdata
#ifdef MPI
type(block_info), pointer :: pinfo
type(pointer_info), dimension(0:npmax,0:npmax) :: block_array
#endif /* MPI */
!
!-------------------------------------------------------------------------------
!
@ -1194,6 +1197,8 @@ module boundaries
#endif /* PROFILE */
#ifdef MPI
!! 1. PREPARE THE BLOCK EXCHANGE ARRAYS FOR MPI
!!
! reset the exchange block counters
!
block_counter(:,:) = 0
@ -1207,7 +1212,11 @@ module boundaries
end do
#endif /* MPI */
! assign the pointer with the first block on in the list
!! 2. UPDATE VARIABLE BOUNDARIES BETWEEN BLOCKS BELONGING TO THE SAME PROCESS
!! AND PREPARE THE EXCHANGE BLOCK LIST OF BLOCKS WHICH BELONG TO
!! DIFFERENT PROCESSES
!!
! assign the pointer to the first block on the meta block list
!
pmeta => list_meta
@ -1217,7 +1226,7 @@ module boundaries
! check if the block is a leaf at the current level
!
if (pmeta%leaf .and. pmeta%level .eq. ilev) then
if (pmeta%leaf .and. pmeta%level == ilev) then
! scan over sides and faces
!
@ -1234,31 +1243,31 @@ module boundaries
! check if the neighbor is at the same level
!
if (pneigh%level .eq. pmeta%level) then
if (pneigh%level == pmeta%level) then
! copy blocks only for the first face
!
if (iface .eq. 1) then
if (iface == 1) then
#ifdef MPI
! check if the current meta block and its neighbor lay on the same processor
! check if the current meta block and its neighbor belong to the same process
!
if (pmeta%cpu .eq. pneigh%cpu) then
if (pmeta%cpu == pneigh%cpu) then
! check if the current meta block lays on the current processors
! check if the current meta block belongs to the current process
!
if (pmeta%cpu .eq. nproc) then
if (pmeta%cpu == nproc) then
#endif /* MPI */
! assign a pointer to the data structure of the current block
!
pdata => pmeta%data
! update the boundaries of the current block
! update boundaries of the current block
!
select case(idir)
case(1)
if (iside .eq. 1) then
if (iside == 1) then
call boundary_copy(pdata &
, pneigh%data%u(:,iel:ie,:,:), idir, iside)
else
@ -1266,7 +1275,7 @@ module boundaries
, pneigh%data%u(:,ib:ibu,:,:), idir, iside)
end if
case(2)
if (iside .eq. 1) then
if (iside == 1) then
call boundary_copy(pdata &
, pneigh%data%u(:,:,jel:je,:), idir, iside)
else
@ -1275,7 +1284,7 @@ module boundaries
end if
#if NDIMS == 3
case(3)
if (iside .eq. 1) then
if (iside == 1) then
call boundary_copy(pdata &
, pneigh%data%u(:,:,:,kel:ke), idir, iside)
else
@ -1286,9 +1295,9 @@ module boundaries
end select
#ifdef MPI
end if ! pmeta on the current cpu
end if ! pmeta on the current process
else ! block and neighbor on different processors
else ! block and neighbor belong to different processes
! increase the counter for number of blocks to exchange
!
@ -1308,23 +1317,21 @@ module boundaries
pinfo%face = iface
pinfo%level_difference = pmeta%level - pneigh%level
! nullify pointers
! nullify pointer fields
!
nullify(pinfo%prev)
nullify(pinfo%next)
! if the list is not empty append the created block
! if the list is not empty append the newly created block
!
if (associated(block_array(pmeta%cpu,pneigh%cpu)%ptr)) then
if (associated(block_array(pmeta%cpu,pneigh%cpu)%ptr)) &
pinfo%prev => block_array(pmeta%cpu,pneigh%cpu)%ptr
nullify(pinfo%next)
end if
! point the list to the last created block
! point the list to the newly created block
!
block_array(pmeta%cpu,pneigh%cpu)%ptr => pinfo
end if ! block and neighbor on different processors
end if ! block and neighbor belong to different processes
#endif /* MPI */
end if ! iface = 1
@ -1338,13 +1345,15 @@ module boundaries
end if ! leaf
! associate the pointer with the next meta block
! associate the pointer to the next meta block
!
pmeta => pmeta%next
end do ! meta blocks
#ifdef MPI
!! 3. UPDATE VARIABLE BOUNDARIES BETWEEN BLOCKS BELONGING TO DIFFERENT PROCESSES
!!
! iterate over sending and receiving processors
!
do irecv = 0, npmax
@ -1352,7 +1361,7 @@ module boundaries
! process only pairs which have boundaries to exchange
!
if (block_counter(irecv,isend) .gt. 0) then
if (block_counter(irecv,isend) > 0) then
! obtain the number of blocks to exchange
!
@ -1362,7 +1371,7 @@ module boundaries
!
itag = 10 * (irecv * nprocs + isend + 1) + 4
! allocate space for variables
! allocate data buffer for variables to exchange
!
select case(idir)
case(1)
@ -1377,61 +1386,106 @@ module boundaries
! if isend == nproc we are sending data
!
if (isend .eq. nproc) then
if (isend == nproc) then
! reset the block counter
!
l = 0
! iterate over exchange blocks along the current direction and fill out
! the buffer with the block data
! the data buffer with the block variables
!
select case(idir)
case(1)
l = 1
! associate the pointer with the first block in the exchange list
!
pinfo => block_array(irecv,isend)%ptr
! scan over all blocks on the block exchange list
!
do while(associated(pinfo))
if (pinfo%side .eq. 1) then
! increase the block counter
!
l = l + 1
! fill the buffer with data from the current block (depending on the side)
!
if (pinfo%side == 1) then
rbuf(l,:,:,:,:) = pinfo%neigh%data%u(:,iel:ie,:,:)
else
rbuf(l,:,:,:,:) = pinfo%neigh%data%u(:,ib:ibu,:,:)
end if
! associate the pointer with the next block
!
pinfo => pinfo%prev
l = l + 1
end do
end do ! %ptr block list
case(2)
l = 1
! associate the pointer with the first block in the exchange list
!
pinfo => block_array(irecv,isend)%ptr
! scan over all blocks on the block exchange list
!
do while(associated(pinfo))
if (pinfo%side .eq. 1) then
! increase the block counter
!
l = l + 1
! fill the buffer with data from the current block (depending on the side)
!
if (pinfo%side == 1) then
rbuf(l,:,:,:,:) = pinfo%neigh%data%u(:,:,jel:je,:)
else
rbuf(l,:,:,:,:) = pinfo%neigh%data%u(:,:,jb:jbu,:)
end if
! associate the pointer with the next block
!
pinfo => pinfo%prev
l = l + 1
end do
end do ! %ptr block list
#if NDIMS == 3
case(3)
l = 1
! associate the pointer with the first block in the exchange list
!
pinfo => block_array(irecv,isend)%ptr
! scan over all blocks on the block exchange list
!
do while(associated(pinfo))
if (pinfo%side .eq. 1) then
! increase the block counter
!
l = l + 1
! fill the buffer with data from the current block (depending on the side)
!
if (pinfo%side == 1) then
rbuf(l,:,:,:,:) = pinfo%neigh%data%u(:,:,:,kel:ke)
else
rbuf(l,:,:,:,:) = pinfo%neigh%data%u(:,:,:,kb:kbu)
end if
! associate the pointer with the next block
!
pinfo => pinfo%prev
l = l + 1
end do
end do ! %ptr block list
#endif /* NDIMS == 3 */
end select
! send the data buffer
! send the data buffer to another process
!
call send_real_array(size(rbuf), irecv, itag, rbuf(:,:,:,:,:), iret)
@ -1439,23 +1493,35 @@ module boundaries
! if irecv == nproc we are receiving data
!
if (irecv .eq. nproc) then
if (irecv == nproc) then
! receive data
! receive the data buffer
!
call receive_real_array(size(rbuf(:,:,:,:,:)), isend, itag, rbuf(:,:,:,:,:), iret)
call receive_real_array(size(rbuf(:,:,:,:,:)), isend, itag &
, rbuf(:,:,:,:,:), iret)
! iterate over all received blocks and update boundaries
! reset the block counter
!
l = 0
! associate the pointer with the first block in the exchange list
!
l = 1
pinfo => block_array(irecv,isend)%ptr
! iterate over all received blocks and update boundaries of the corresponding
! data blocks
!
do while(associated(pinfo))
! set indices
! increase the block counter
!
l = l + 1
! set the side index
!
iside = pinfo%side
! assign a pointer to the data structure of the current block
! assign a pointer to the associated data block
!
pdata => pinfo%block%data
@ -1463,31 +1529,46 @@ module boundaries
!
call boundary_copy(pdata, rbuf(l,:,:,:,:), idir, iside)
! associate the pointer with the next block
!
pinfo => pinfo%prev
l = l + 1
end do
end do ! %ptr block list
end if ! irecv = nproc
! deallocate buffers
! deallocate data buffer
!
if (allocated(rbuf)) deallocate(rbuf)
! deallocate info blocks
! associate the pointer with the first block in the exchange list
!
pinfo => block_array(irecv,isend)%ptr
! scan over all blocks on the exchange block list
!
do while(associated(pinfo))
! associate the exchange list pointer
!
block_array(irecv,isend)%ptr => pinfo%prev
! nullify the pointer fields
!
nullify(pinfo%prev)
nullify(pinfo%next)
nullify(pinfo%block)
nullify(pinfo%neigh)
! deallocate the object
!
deallocate(pinfo)
! associate the pointer with the next block
!
pinfo => block_array(irecv,isend)%ptr
end do
end do ! %ptr block list
end if ! if block_count > 0