mirror of
https://github.com/QuantumPackage/qp2.git
synced 2024-11-18 19:32:20 +01:00
176 lines
4.2 KiB
Fortran
176 lines
4.2 KiB
Fortran
program check_omp_v2
|
|
|
|
use omp_lib
|
|
|
|
implicit none
|
|
|
|
integer :: accu, accu2
|
|
integer :: s, n_setting
|
|
logical :: verbose, test_versions
|
|
logical, allocatable :: is_working(:)
|
|
|
|
verbose = .False.
|
|
test_versions = .True.
|
|
n_setting = 4
|
|
|
|
allocate(is_working(n_setting))
|
|
|
|
is_working = .False.
|
|
|
|
! set the number of threads
|
|
call omp_set_num_threads(2)
|
|
|
|
do s = 1, n_setting
|
|
|
|
accu = 0
|
|
accu2 = 0
|
|
|
|
call omp_set_max_active_levels(1)
|
|
call omp_set_nested(.False.)
|
|
|
|
if (s==1) then
|
|
!call set_multiple_levels_omp()
|
|
cycle
|
|
elseif (s==2) then
|
|
call omp_set_max_active_levels(5)
|
|
elseif (s==3) then
|
|
call omp_set_nested(.True.)
|
|
else
|
|
call omp_set_nested(.True.)
|
|
call omp_set_max_active_levels(5)
|
|
endif
|
|
|
|
! Level 1
|
|
!$OMP PARALLEL
|
|
if (verbose) then
|
|
print*,'Num threads level 1:',omp_get_num_threads()
|
|
endif
|
|
|
|
! Level 2
|
|
!$OMP PARALLEL
|
|
if (verbose) then
|
|
print*,'Num threads level 2:',omp_get_num_threads()
|
|
endif
|
|
|
|
! Level 3
|
|
!$OMP PARALLEL
|
|
if (verbose) then
|
|
print*,'Num threads level 3:',omp_get_num_threads()
|
|
endif
|
|
|
|
call check_omp_in_subroutine(accu2)
|
|
|
|
! Level 4
|
|
!$OMP PARALLEL
|
|
|
|
if (verbose) then
|
|
print*,'Num threads level 4:',omp_get_num_threads()
|
|
endif
|
|
|
|
!$OMP ATOMIC
|
|
accu = accu + 1
|
|
!$OMP END ATOMIC
|
|
|
|
!$OMP END PARALLEL
|
|
|
|
|
|
!$OMP END PARALLEL
|
|
|
|
|
|
!$OMP END PARALLEL
|
|
|
|
|
|
!$OMP END PARALLEL
|
|
|
|
if (verbose) then
|
|
print*,'Setting:',s,'accu=',accu
|
|
print*,'Setting:',s,'accu2=',accu2
|
|
endif
|
|
|
|
if (accu == 16 .and. accu2 == 16) then
|
|
is_working(s) = .True.
|
|
endif
|
|
|
|
enddo
|
|
|
|
if (verbose) then
|
|
if (is_working(2)) then
|
|
print*,'The parallelization works on 4 levels with:'
|
|
print*,'call omp_set_max_active_levels(5)'
|
|
print*,''
|
|
print*,'Please use the irpf90 flags -DSET_MAX_ACT in qp2/config/${compiler_name}.cfg'
|
|
elseif (is_working(3)) then
|
|
print*,'The parallelization works on 4 levels with:'
|
|
print*,'call omp_set_nested(.True.)'
|
|
print*,''
|
|
print*,'Please use the irpf90 flag -DSET_NESTED in qp2/config/${compiler_name}.cfg'
|
|
elseif (is_working(4)) then
|
|
print*,'The parallelization works on 4 levels with:'
|
|
print*,'call omp_set_nested(.True.)'
|
|
print*,'+'
|
|
print*,'call omp_set_max_active_levels(5)'
|
|
print*,''
|
|
print*,'Please use the irpf90 flags -DSET_NESTED -DSET_MAX_ACT in qp2/config/${compiler_name}.cfg'
|
|
else
|
|
print*,'The parallelization on multiple levels does not work with:'
|
|
print*,'call omp_set_max_active_levels(5)'
|
|
print*,'or'
|
|
print*,'call omp_set_nested(.True.)'
|
|
print*,'or'
|
|
print*,'call omp_set_nested(.True.)'
|
|
print*,'+'
|
|
print*,'call omp_set_max_active_levels(5)'
|
|
print*,''
|
|
print*,'Try an other compiler and good luck...'
|
|
endif
|
|
|
|
! if (is_working(1)) then
|
|
! print*,''
|
|
! print*,'=========================================================='
|
|
! print*,'Your actual set up works for parallelization with 4 levels'
|
|
! print*,'=========================================================='
|
|
! print*,''
|
|
! else
|
|
! print*,''
|
|
! print*,'==================================================================='
|
|
! print*,'Your actual set up does not work for parallelization with 4 levels'
|
|
! print*,'Please look at the previous messages to understand the requirements'
|
|
! print*,'==================================================================='
|
|
! print*,''
|
|
! endif
|
|
endif
|
|
|
|
! List of working flags
|
|
if (test_versions) then
|
|
print*,'Tests:',is_working(2:4)
|
|
endif
|
|
|
|
! IRPF90_FLAGS
|
|
if (is_working(2)) then
|
|
print*,'-DSET_MAX_ACT'
|
|
elseif (is_working(3)) then
|
|
print*,'-DSET_NESTED'
|
|
elseif (is_working(4)) then
|
|
print*,'-DSET_MAX_ACT -DSET_NESTED'
|
|
else
|
|
print*,'ERROR'
|
|
endif
|
|
|
|
end
|
|
|
|
subroutine check_omp_in_subroutine(accu2)
|
|
|
|
implicit none
|
|
|
|
integer, intent(inout) :: accu2
|
|
|
|
!$OMP PARALLEL
|
|
|
|
!$OMP ATOMIC
|
|
accu2 = accu2 + 1
|
|
!$OMP END ATOMIC
|
|
|
|
!$OMP END PARALLEL
|
|
|
|
end
|