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Subject: Re: g++ 3.4 and -fprofile-generate

Author: Dieter Buerssner

Date: 11:28:57 02/16/05

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On February 16, 2005 at 13:19:46, Robert Hyatt wrote:

>On February 16, 2005 at 13:09:14, Frank Phillips wrote:

>>I have been using the profile generated optimisation option, but the code it
>>produces is no faster then with simple -O3.

I have no experience on AMD64. On x86 it works well for me, under Linux and
Windows.

>ICC (Intel's compiler) works fine and that is what I use
>myself.

Does profile guided optimizatation with ICC work for you, when you run crafty
under xboard. It doesn't work for me. Console runs work fine. With gcc, I can
rund a match Yace-Crafty under Xboard. That gave better speedups than
test-suites. But no luck with ICC here. I get very modest speedups with PGO and
ICC (more with gcc). However, ICC is fast even without PGO.

Regards,
Dieter

• Re: g++ 3.4 and -fprofile-generate Robert Hyatt 12:33:24 02/16/05
  • Re: g++ 3.4 and -fprofile-generate Andrew Williams 12:57:46 02/16/05
    • Re: g++ 3.4 and -fprofile-generate Robert Hyatt 13:26:50 02/16/05
      • Re: g++ 3.4 and -fprofile-generate Frank Phillips 15:29:53 02/16/05
      • Re: g++ 3.4 and -fprofile-generate Gian-Carlo Pascutto 14:53:10 02/16/05
        • Re: g++ 3.4 and -fprofile-generate Robert Hyatt 17:53:19 02/16/05
          • Re: g++ 3.4 and -fprofile-generate Andrew Williams 00:05:49 02/17/05
            • Re: g++ 3.4 and -fprofile-generate Gian-Carlo Pascutto 00:55:30 02/17/05

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