Intel® Fortran Compiler 17.0 Developer Guide and Reference
Insert a "%s loop count min(%d)" statement right before the loop at line %d to parallelize the loop.
Add "!DIR$ LOOP COUNT" before the specified loop. This directive indicates the minimum trip count (number of iterations) of the loop that enables the parallelization of the loop.
Consider the following:
subroutine foo (n)
integer, parameter :: N2 = 10000
real (8) :: A(N2), B(N2)
integer :: i, n
do i =1, n
A(i) = B(i) * B(i)
end do
end subroutine fooIn this case, if the trip count of the loop at line 5 is greater than 128, then use the LOOP COUNT directive to parallelize this loop.
If you determine it is safe to do so, you can add the directive as follows:
subroutine foo (n)
integer, parameter :: N2 = 10000
real (8) :: A(N2), B(N2)
integer :: i, n
!dir$ loop count min(128)
do i =1, n
A(i) = B(i) * B(i)
end do
end subroutine fooConfirm that the loop has the minimum number of iterations, as specified in the diagnostic message.