------- Additional Comments From fxcoudert at gcc dot gnu dot org 2005-06-19 07:34 ------- On Pentium III (Coppermine), 864 MHz, 256 KB cache, with linux. Timing in seconds:
g77: 9.52s gfortran: 9.49s g77 -O2: 3.11s gfortran -O2: 3.39s g77 -O3 -ffast-math: 3.09s gfortran -O3 -ffast-math: 3.37s So, I can't confirm your timings. You should perhaps use longer loops (since your timings are less than a second, you could see the effect of something external to the floating-point performance itself). -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20945
