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https://github.com/OpenMP/Examples.git
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46 lines
1.1 KiB
Fortran
46 lines
1.1 KiB
Fortran
! @@name: async_target.2f
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! @@type: F-free
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! @@compilable: yes
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! @@linkable: no
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! @@expect: success
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subroutine mult(p, N, idev)
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use omp_lib, ONLY: omp_is_initial_device
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real :: p(N)
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real,allocatable :: v1(:), v2(:)
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integer :: i, idev
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!$omp declare target (init)
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!$omp target data map(v1,v2)
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!$omp task shared(v1,v2) depend(out: N)
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!$omp target device(idev)
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if( omp_is_initial_device() ) &
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stop "not executing on target device"
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allocate(v1(N), v2(N))
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call init(v1,v2,N)
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!$omp end target
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!$omp end task
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call foo() ! execute other work asychronously
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!$omp task shared(v1,v2,p) depend(in: N)
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!$omp target device(idev) map(from: p)
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if( omp_is_initial_device() ) &
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stop "not executing on target device"
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!$omp parallel do
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do i = 1,N
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p(i) = v1(i) * v2(i)
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end do
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deallocate(v1,v2)
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!$omp end target
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!$omp end task
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!$omp taskwait
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!$omp end target data
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call output(p, N)
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end subroutine
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