libgomp/testsuite/libgomp.fortran/examples-4/target_data-6.f90

   1 ! { dg-do run }
   2 ! { dg-require-effective-target offload_device_nonshared_as }
   3
   4 module e_51_6_mod
   5 integer, parameter :: THRESHOLD = 500
   6 contains
   7   subroutine init (v1, v2, N)
   8     integer :: i, N
   9     real :: v1(N), v2(N)
  10     do i = 1, N
  11       v1(i) = i + 2.0
  12       v2(i) = i - 3.0
  13     end do
  14   end subroutine
  15
  16   subroutine init_again (v1, v2, N)
  17     integer :: i, N
  18     real :: v1(N), v2(N)
  19     do i = 1, N
  20       v1(i) = i - 3.0
  21       v2(i) = i + 2.0
  22     end do
  23   end subroutine
  24
  25   subroutine check (p, N)
  26     integer :: i, N
  27     real, parameter :: EPS = 0.00001
  28     real :: diff, p(N)
  29     do i = 1, N
  30       diff = p(i) - 2 * (i + 2.0) * (i - 3.0)
  31       if (diff > EPS .or. -diff > EPS) call abort
  32     end do
  33   end subroutine
  34
  35   subroutine vec_mult (N)
  36     use omp_lib, only: omp_is_initial_device
  37     real :: p(N), v1(N), v2(N)
  38     integer :: i, N
  39     call init (v1, v2, N)
  40     !$omp target data if(N > THRESHOLD) map(from: p)
  41       !$omp target if(N > THRESHOLD) map(to: v1, v2)
  42         if (omp_is_initial_device ()) call abort
  43         !$omp parallel do
  44         do i = 1, N
  45           p(i) = v1(i) * v2(i)
  46         end do
  47       !$omp end target
  48       call init_again (v1, v2, N)
  49       !$omp target if(N > THRESHOLD) map(to: v1, v2)
  50         if (omp_is_initial_device ()) call abort
  51         !$omp parallel do
  52         do i = 1, N
  53           p(i) = p(i) + v1(i) * v2(i)
  54         end do
  55       !$omp end target
  56     !$omp end target data
  57     call check (p, N)
  58   end subroutine
  59 end module
  60
  61 program e_51_6
  62   use e_51_6_mod, only : vec_mult
  63   integer :: n
  64   n = 1000
  65   call vec_mult (n)
  66 end program