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48 lines
1.1 KiB
Fortran
48 lines
1.1 KiB
Fortran
! { dg-do run }
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! { dg-require-effective-target offload_device_nonshared_as }
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module e_50_5_mod
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integer, parameter :: THRESHOLD1 = 500, THRESHOLD2 = 100
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contains
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subroutine init (v1, v2, N)
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integer :: i, N
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real :: v1(N), v2(N)
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do i = 1, N
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v1(i) = i + 2.0
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v2(i) = i - 3.0
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end do
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end subroutine
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subroutine check (p, N)
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integer :: i, N
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real, parameter :: EPS = 0.00001
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real :: diff, p(N)
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do i = 1, N
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diff = p(i) - (i + 2.0) * (i - 3.0)
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if (diff > EPS .or. -diff > EPS) STOP 1
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end do
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end subroutine
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subroutine vec_mult (N)
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use omp_lib, only: omp_is_initial_device
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integer :: i, N
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real :: p(N), v1(N), v2(N)
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call init (v1, v2, N)
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!$omp target if(N > THRESHOLD1) map(to: v1,v2) map(from: p)
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if (omp_is_initial_device ()) STOP 2
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!$omp parallel do if(N > THRESHOLD2)
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do i = 1, N
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p(i) = v1(i) * v2(i)
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end do
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!$omp end target
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call check (p, N)
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end subroutine
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end module
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program e_50_5
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use e_50_5_mod, only : vec_mult
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integer :: n
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n = 1000
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call vec_mult (n)
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end program
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