libgomp/testsuite/libgomp.fortran/taskgroup1.f90

   1   integer :: v(16), i
   2   do i = 1, 16
   3     v(i) = i
   4   end do
   5
   6   !$omp parallel num_threads (4)
   7     !$omp single
   8       !$omp taskgroup
   9         do i = 1, 16, 2
  10           !$omp task
  11             !$omp task
  12               v(i) = v(i) + 1
  13             !$omp end task
  14             !$omp task
  15               v(i + 1) = v(i + 1) + 1
  16             !$omp end task
  17           !$omp end task
  18         end do
  19       !$omp end taskgroup
  20       do i = 1, 16
  21         if (v(i).ne.(i + 1)) STOP 1
  22       end do
  23       !$omp taskgroup
  24         do i = 1, 16, 2
  25           !$omp task
  26             !$omp task
  27               v(i) = v(i) + 1
  28             !$omp endtask
  29             !$omp task
  30               v(i + 1) = v(i + 1) + 1
  31             !$omp endtask
  32             !$omp taskwait
  33           !$omp endtask
  34         end do
  35       !$omp endtaskgroup
  36       do i = 1, 16
  37         if (v(i).ne.(i + 2)) STOP 2
  38       end do
  39       !$omp taskgroup
  40         do i = 1, 16, 2
  41           !$omp task
  42             !$omp task
  43               v(i) = v(i) + 1
  44             !$omp end task
  45             v(i + 1) = v(i + 1) + 1
  46           !$omp end task
  47         end do
  48         !$omp taskwait
  49         do i = 1, 16, 2
  50           !$omp task
  51             v(i + 1) = v(i + 1) + 1
  52           !$omp end task
  53         end do
  54       !$omp end taskgroup
  55       do i = 1, 16, 2
  56         if (v(i).ne.(i + 3)) STOP 3
  57         if (v(i + 1).ne.(i + 5)) STOP 4
  58       end do
  59       !$omp taskgroup
  60         do i = 1, 16, 2
  61           !$omp taskgroup
  62             !$omp task
  63               v(i) = v(i) + 1
  64             !$omp end task
  65             !$omp task
  66               v(i + 1) = v(i + 1) + 1
  67             !$omp end task
  68           !$omp end taskgroup
  69           if (v(i).ne.(i + 4).or.v(i + 1).ne.(i + 6)) STOP 5
  70           !$omp task
  71             v(i) = v(i) + 1
  72           !$omp end task
  73         end do
  74       !$omp end taskgroup
  75       do i = 1, 16
  76         if (v(i).ne.(i + 5)) STOP 6
  77       end do
  78     !$omp end single
  79   !$omp end parallel
  80 end