Author: Tom Likens
Date: 19:49:34 07/18/05
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On July 18, 2005 at 20:00:13, Dann Corbit wrote: >On July 18, 2005 at 19:26:49, Gian-Carlo Pascutto wrote: > >>On July 17, 2005 at 16:19:07, Tom Likens wrote: >> >>> >>>I'm curious if anyone else has used Intel's new 9.0 compiler. I recompiled >>>Djinn for 64-bits and I'm seeing around 1.3M nps (on average middlegame >>>positions). The best I could get out of the 64-bit version of g++ 3.3.5 was >>>around 900k nps (all of this is on an Athlon FX-51). >> >>GCC seriously outperforms Intel C for me. >> >>You really should use GCC 3.4 on a 64 bit system. > >Have you tried GCC 4.0? I used GCC 3.3.5 since this was the default that came with the latest version of SUSE. But, you and Gian-Carlo are the 2nd and 3rd person to encourage me to look at GCC again (specifically, 4.0). I'll download and build 3.4 and 4.0 and let you know what I discover. One point, the PGO stuff didn't really make much of a difference in 3.3.5. Has this improved with GCC 3.4 or 4.0? For me, the best results are *always* from a profiled version of the engine. regards, --tom
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