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IO: Rewrite file division in read_restart_snapshot_h5().

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Signed-off-by: Grzegorz Kowal <grzegorz@amuncode.org>
This commit is contained in:
Grzegorz Kowal 2021-12-01 09:19:06 -03:00
parent e50c65e7dd
commit b85dfafef1
1 changed files with 67 additions and 52 deletions
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47
sources/io.F90
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@ -3080,7 +3080,7 @@ module io
#ifdef MPI
use mesh , only : redistribute_blocks
#endif /* MPI */
use mpitools, only : nprocs, npmax, nproc
use mpitools, only : nprocs, nproc
implicit none
@ -3088,7 +3088,7 @@ module io
character(len=255) :: fname
integer(hid_t) :: file_id, grp_id
integer :: nfiles, last_id, n
integer :: nfiles, last_id, n, i, nd, nr, nl, nu, il, iu
logical :: flag
real(kind=8) :: deinj
@ -3139,7 +3139,7 @@ module io
! larger or equal to the number of files, and when we have less processors than
! files
!
if (nproc < nfiles) then
if (nfiles <= nprocs .and. nproc < nfiles) then
write(fname, "(a,'r',i6.6,'_',i5.5,'.h5')") trim(respath), nrest, nproc
inquire(file=fname, exist=flag)
@ -3179,19 +3179,36 @@ module io
call print_message(loc, "Could not close '" // trim(fname) // "'!")
return
end if
end if ! nproc < nfiles
#ifdef MPI
! if there are more files than processes, read the remaining files by
! the last process and redistribute blocks after each processed file,
! otherwise only redistribute blocks
! if there are more files than processes, divide the files equally between
! processes
!
if (nprocs < nfiles) then
do n = nprocs, nfiles - 1
call change_blocks_process(n, npmax)
nl = 0
nd = nfiles / nprocs
nr = mod(nfiles, nprocs)
do n = 0, nprocs - 1
if (n < nr) then
il = n * (nd + 1)
iu = il + nd
else
il = n * nd + nr
iu = il + nd - 1
end if
do i = il, iu
call change_blocks_process(i, n)
end do
if (n == nproc) then
nl = il
nu = iu
end if
end do
do n = nl, nu
if (nproc == npmax) then
write(fname, "(a,'r',i6.6,'_',i5.5,'.h5')") trim(respath), nrest, n
inquire(file=fname, exist=flag)
if (.not. flag) then
@ -3231,18 +3248,16 @@ module io
call print_message(loc, "Could not close '" // trim(fname) // "'!")
return
end if
end if
call redistribute_blocks(status)
end do
else
call redistribute_blocks(status)
end if
#endif /* MPI */
if (allocated(block_array)) deallocate(block_array)
#ifdef MPI
call redistribute_blocks(status)
#endif /* MPI */
!-------------------------------------------------------------------------------
!
end subroutine read_restart_snapshot_h5