Author: Andrew Williams
Date: 02:24:11 05/19/02
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On May 18, 2002 at 13:17:50, Andrew Williams wrote: >On May 18, 2002 at 08:21:29, Vincent Diepeveen wrote: > >>Hello, >> >>Zeke Smigel did for me a test and it was rather surprising. >> >>At his K7 1.4Ghz MP: >> >> intel c++ 6.0 (reinforced with profile branch information): >> >> 64919.8 nodes a second >> >> >> gcc 3.1 (not reinforced with profile branch information as >> i didn't get this to work yet): >> >> 68135.2 nodes a second >> >> >>At intel P3-800Mhz under linux gcc 3.1 was only 5.1% slower than >>the intel c++ 6.0 version. This is very good result for gcc 3.1 >>(consider it is without profiling branch optimization yet) >> >>So in short GCC 3.1 kicks butt!! > >My preliminary tests results are quite impressive. It's now easy to use >execution profiling to improve results. Without execution profiling, I get a >speedup of between 5 and 6 percent. With execution profiling I'm getting over >10% speedup. I'm going to more tests, but so far I'm very happy with this. > > Andrew > These figures for my program are in comparison with GCC 2.95.3, not with the Intel compiler, which I have not tried yet. Andrew
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