Thanks. I think the Fortran main program from your site is
program array_sum
use timing_module
use precision_module, wp => dp
implicit none
integer , parameter :: n=100000000
real (wp) ,dimension(n) :: x
real (wp) :: x_sum
call start_timing()
x=1.0_wp
print *," array initialisation ",time_difference()
x_sum=sum(x)
print *," array summation ",time_difference()
print *,x_sum
call end_timing()
end program array_sum
There was a long thread Simple summation 8x slower than in Julia (another thread title to be edited?) where it was found that Julia’s computed trig functions faster than gfortran.