Anand Patil wrote: attribution dropped: >> You should also check the generated assembly code (f77 -S foo.f) >> whether C(i,j)**2 is compiled into the inline code C(i,j)*C(i,j), or >> into call to the run-time library power function, and also whether the >> subscript address computations are eliminated. > > I'll just inline it manually to be sure. I was trying to get a speedup > from openMP in that subroutine, not necessarily optimize overall. > It's true that when your only objective is to get speedup from threading, a number of normal optimizations may make your task more difficult. I don't know of any current Fortran compilers which don't optimize **2 (as opposed to **2.) as soon as any optimization is enabled.
