Author: Vincent Diepeveen
Date: 20:08:51 08/07/03
Go up one level in this thread
On August 07, 2003 at 09:45:32, Robert Allgeuer wrote: >On August 07, 2003 at 07:53:41, Vincent Diepeveen wrote: > >>On August 07, 2003 at 06:30:39, Robert Allgeuer wrote: >> >>Dead wrong. >> >>You aren't running 16 bits executables at your P4 either are you? >> >>So stop these nonsense statements. Runnative 64 bits compiled itanium >>executables at itaniums. Run 64 bits native compiled opteron executables at >>opteron and run 32 bits x86 compiled exes at K7/P4. > >I know this as well, your posting is not particularly helpful. >Still, knowing the speed-up for pure 32 bit code on an Opteron does make sense >for those who might want to buy an Opteron machine for chess today, when most >programs have NOT been compiled or released for 64 bit, yet. > >Robert So it doesn't make sense to buy a P4 either nor a K7, because the software they run at it is optimized in a much better way than the software you go install at it. You understanding what i say here? If you guess you do. Then first reread it carefully. > >> >>>On August 07, 2003 at 05:30:57, Gian-Carlo Pascutto wrote: >>>> >>>> Opteron v Athlon Opteron vs P4 >>>>SPEC 1.55 1.74 >>>>Crafty 1.65 2.65 >>>>Sjeng 1.70 2.05 >>>> >>>>When running 32 bit software (or more precisely, software using the old 8 >>>>register instruction set), the Opteron is 42% and 65% faster than the Athlon >>>>and P4 respectively. >>>> >>> >>>I assume these two last figures are for general programs, i.e. from SPEC. >>>How much would be the speed-up of 32 bit executables for Sjeng and Crafty on >>>Opteron, which is a more relevant measure for chess programs. >>> >>>Robert
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