program subarrays integer, parameter :: n = 20, c = 10 integer :: i, a(n), b(n) a(:) = 0 b(:) = 0 ! COPY !$acc parallel copy (a(1:n)) !$acc loop do i = 1, n a(i) = i end do !$acc end parallel do i = 1, n b(i) = i end do call check (a, b, n) ! COPYOUT a(:) = 0 !$acc parallel copyout (a(1:n)) !$acc loop do i = 1, n a(i) = i end do !$acc end parallel do i = 1, n if (a(i) .ne. b(i)) STOP 1 end do call check (a, b, n) ! COPYIN a(:) = 0 !$acc parallel copyout (a(1:n)) copyin (b(1:n)) !$acc loop do i = 1, n a(i) = i end do !$acc end parallel call check (a, b, n) ! PRESENT_OR_COPY !$acc parallel pcopy (a(1:n)) !$acc loop do i = 1, n a(i) = i end do !$acc end parallel call check (a, b, n) ! PRESENT_OR_COPYOUT a(:) = 0 !$acc parallel pcopyout (a(1:n)) !$acc loop do i = 1, n a(i) = i end do !$acc end parallel call check (a, b, n) ! PRESENT_OR_COPYIN a(:) = 0 !$acc parallel pcopyout (a(1:n)) pcopyin (b(1:n)) !$acc loop do i = 1, n a(i) = i end do !$acc end parallel call check (a, b, n) end program subarrays subroutine check (a, b, n) integer :: n, a(n), b(n) integer :: i do i = 1, n if (a(i) .ne. b(i)) STOP 2 end do end subroutine check