On Thu, 2007-02-22 at 18:50 +0100, Sylvain Gelly wrote: > > I'm very much interested in core 2 duo performance and would > appreciate > > hearing what others have experienced in this regard. I don't know > what > > OS you use, but here are my experiences so far with Linux: > > You seem to have exactly the same processor as I have access to. And I > get much better performance than you. Maybe it comes from the system: > - which compiler do you use? > - which libc do you use? > - what is your "-march" option and -O ? > > I use g++ 4.1.1, -march=opteron, -O3, and quite recent linux > installation (Mandriva 2007). > For me also, everything is in 32bits and I did not optimize further > for this processor. > > Maybe changing these things would explain the difference between the > performance I get and you get. (should be > 2. for you). > > Sylvain
I'm using gcc 4.1.2 on a new Edgy Eft Ubuntu distribution. My options are -O3 -march=nocona with other minor options that see to help a tiny bit. I'll try the opteron option to see what happens. I never tried that but I've tried other architectures and most of what I read claims the best to use is -march=nocona for the core 2 duo. - Don _______________________________________________ computer-go mailing list computer-go@computer-go.org http://www.computer-go.org/mailman/listinfo/computer-go/
