http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45422
--- Comment #33 from Joost VandeVondele <Joost.VandeVondele at pci dot uzh.ch> 2011-01-25 09:47:10 UTC --- I just note that the timings reported by David and Jakub are not for the compile options I originally reported. With 4.6 (20110117) I now have gfortran -c -ftime-report -cpp -fbounds-check -g -O3 -ffast-math -funroll-loops -ftree-vectorize -march=native -ffree-form PR45422.F90 TOTAL : 102.15 while with the options used by David / Jakub I have timings similar to theirs. gfortran -O3 -fbounds-check -ftime-report -c PR45422.F90 TOTAL : 42.87 With 4.5 timings remain ~44s
