On Sat, 11 Nov 2006, Paul Thomas wrote: > Steven and Jerry, > > > > > > If someone can confirm that this patch causes the drop, I can help > > trying to find a fix. > > > amd64/Cygwin_NT > > $ /irun/bin/gfortran -O3 -funroll-loops -ffast-math -march=opteron ac.f90 > > 118372 20.2s > 118475 20.4s Bonzini's patch > 118704 16.2s > > I believe that the improvement is FX's and my patch for MOD.
Note that the suse x86_64 tester has 18.6s with the last run before bonzinis patch and 30.8s the first run after it, so it regressed quite badly. It also has -ftree-vectorize as additional option here. > > Notice that this is a single core machine and that there is a PR out on the > vectorizer. Could this be the problem, since the suse tests are done on a two > core machine, if I understood correctly? Yes this is a dual-socket machine. But I don't see how this can be an issue here? Richard. -- Richard Guenther <[EMAIL PROTECTED]> Novell / SUSE Labs
