Author: Gerd Isenberg
Date: 16:45:54 08/06/03
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On August 06, 2003 at 18:25:11, Gian-Carlo Pascutto wrote: >I had the opportunity to run some tests on an Opteron machine, >and benchmarked Deep Sjeng on it, compared to the Athlon XP. > >The Opteron is 70% faster. > >Yes, that's _SEVENTY PERCENTS FASTER_, clock for clock. > >An 1.6Ghz Opteron runs Deep Sjeng faster than a (nonexisting) 2.7Ghz >Athlon XP would. > >Operating system was Linux 2.4.19, SuSE 8.0 Opteron version. >I compiled with GCC 3.2.2, pure (portable) C source. > >The reference was a MSVC6 SP5 with Processor Pack compile, with >optimized parameters, and with optimized assembly language for >most move generators and some other functions. (The fastest IA32 >binary I have for the Athlon), running on an Athlon XP of the same >clockspeed. > >-- >GCP Hi Gian-Carlo, nice to hear ;-) I'm not familar with GCC. I guess you compared a x86-64 executable running on a single opteron processor, all sixteen 64-bit gp-registers used, with a x86-32 executable. A few questions: Do you use a lot of 64-bit stuff in Deep Sjeng? Did you use profile guided optimization? Did you benchmark the x86-32 Deep Sjeng binary on opteron? Thanks in advance, Gerd
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