On Tue, May 12, 2009 05:27 PM, Collin Winter wrote: > On Tue, May 12, 2009 at 4:45 AM, Cesare Di Mauro > <cesare.dima...@a-tono.com> wrote: >> Another note. Fredrik Johansson let me note just few minutes ago that >> I've >> compiled my sources without PGO optimizations enabled. >> >> That's because I used Visual Studio Express Edition. >> >> So another gain in performances can be obtained. :) > > FWIW, Unladen Swallow experimented with gcc 4.4's FDO and got an > additional 10-30% (depending on the benchmark). The training load is > important, though: some training sets offered better performance than > others. I'd be interested in how MSVC's PGO compares to gcc's FDO in > terms of overall effectiveness. The results for gcc FDO with our > 2009Q1 release are at the bottom of > http://code.google.com/p/unladen-swallow/wiki/Releases. > > Collin Winter
Unfortunately I can't test PGO, since I use the Express Editions of VS. May be Martin or othe mainteners of the Windows versions can help here. However it'll be difficult to find a good enough profile for the binaries distributed for the official Python. FDO brings to quite different results based on the profile selected. cheers, Cesare _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
