Author: Eugene Nalimov
Date: 12:51:03 02/16/05
Go up one level in this thread
On February 16, 2005 at 15:26:50, Robert Hyatt wrote: >On February 16, 2005 at 15:15:53, Frank Phillips wrote: > >>On February 16, 2005 at 13:19:46, Robert Hyatt wrote: >> >>>On February 16, 2005 at 13:09:14, Frank Phillips wrote: >>> >>>>Has anybody got any experience with g++ 3.4 for amd64 (x86_64) - for Linux? >>>> >>>>I have been using the profile generated optimisation option, but the code it >>>>produces is no faster then with simple -O3. >>>> >>>>I simply compile with -fprofile-generate >>>>then run, >>>>then recompile with -fprofile-use. >>>> >>>>The relevant *.gcno, *.gcda files are produced. Must be doing something >>>>wrong..... >>>> >>>>Frank >>> >>> >>>It has never worked well for me. In fact, it usually crashes when I try to do >>>this for crafty. ICC (Intel's compiler) works fine and that is what I use >>>myself. >>> >> >>Oh... the last version of ICC I used produced fast 32 bit code. Does it now do >>amd 64 bit ? >> >>Frank >> > >No. Sorry. I completely overlooked the AMD-64 in your text as that has become >so common to see over the past year. ICC is 32 bits only although it will be 64 >bit before long... ICC 8.1 supports x86, x64, and IPF. Thanks, Eugene > >> >>>You need a good test set of data so that it can accurately predict each branch >>>and move code to optimize branch prediction at run-time... The positions you >>>test need to pretty accurately represent what happens in a real game.
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.