OpenMP-Examples/data_environment/sources/target_task_reduction.2b.f90
2022-04-18 15:02:25 -07:00

40 lines
892 B
Fortran

! @@name: target_task_reduction.2b
! @@type: F-free
! @@compilable: yes
! @@linkable: yes
! @@expect: success
! @@version: omp_5.2
program target_task_reduction_ex2b
interface
subroutine device_compute(res)
!$omp declare target enter(device_compute)
integer :: res
end subroutine device_compute
subroutine host_compute(res)
integer :: res
end subroutine host_compute
end interface
integer :: sum
sum = 0
!$omp parallel masked reduction(task,+:sum)
!$omp target in_reduction(+:sum) nowait
call device_compute(sum)
!$omp end target
call host_compute(sum)
!$omp end parallel masked
print *, "sum = ", sum
!!OUTPUT: sum = 2
end program
subroutine device_compute(sum)
integer :: sum
sum = 1
end subroutine
subroutine host_compute(sum)
integer :: sum
sum = 1
end subroutine