libgomp/testsuite/libgomp.fortran/examples-4/target-5.f90

   1 ! { dg-do run }
   2 ! { dg-require-effective-target offload_device_nonshared_as }
   3
   4 module e_50_5_mod
   5 integer, parameter :: THRESHOLD1 = 500, THRESHOLD2 = 100
   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 check (p, N)
  17     integer :: i, N
  18     real, parameter :: EPS = 0.00001
  19     real :: diff, p(N)
  20     do i = 1, N
  21       diff = p(i) - (i + 2.0) * (i - 3.0)
  22       if (diff > EPS .or. -diff > EPS) stop 1
  23     end do
  24   end subroutine
  25
  26   subroutine vec_mult (N)
  27     use omp_lib, only: omp_is_initial_device
  28     integer :: i, N
  29     real :: p(N), v1(N), v2(N)
  30     call init (v1, v2, N)
  31     !$omp target if(N > THRESHOLD1) map(to: v1,v2) map(from: p)
  32       if (omp_is_initial_device ()) stop 2
  33       !$omp parallel do if(N > THRESHOLD2)
  34       do i = 1, N
  35         p(i) = v1(i) * v2(i)
  36       end do
  37     !$omp end target
  38     call check (p, N)
  39   end subroutine
  40 end module
  41
  42 program e_50_5
  43   use e_50_5_mod, only : vec_mult
  44   integer :: n
  45   n = 1000
  46   call vec_mult (n)
  47 end program