> On Thu, Sep 14, 2006 at 07:47:37PM -0400, Kevin Brosius wrote: > > So, does anyone have a set of optimization flags they like for cinelerra > > on an AMD64? How about that same CPU, but running a 32bit system? > > > > -- > > Kevin > > Kevin, > > Did you find any interesting optimization flags? How do you use them? > > Nicolas.
Good question... and the answer is no. I suspect that the AMD64 is different enough from everything else that the compiler doesn't know what to do, or something of that sort. I've run test renders of the same project on multiple optimizations. The project is about 17min to render, so not trivial, and I'm seeing render times all about 17:10 to 17:22, for i586, pentium opt, and athlon on a single core of the AMD X2. I find that rather odd, so I suspect something more basic is happening. I was not able to use the march=athlon64 flag, as the system is SUSE92 and the compiler does not recoqnize that arch. You might try -march=athlon64 -fprefetch-loop-arrays --with-Fpic Thanks to vale on irc for those options. I don't know if the athlon64 flag would yield a usable binary on a 32 bit system myself. -- Kevin _______________________________________________ Cinelerra mailing list [email protected] https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra
