Author: Eugene Nalimov
Date: 21:12:38 12/07/03
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On December 07, 2003 at 23:30:56, Jay Urbanski wrote: >For a dual processor system, Opteron is the fastest. > >Opteron 2.2GHz >http://www.spec.org/cpu2000/results/res2003q4/cpu2000-20031117-02634.html > >Crafty base ratio 35.0 > >Itanium 1.5GHz > >http://www.spec.org/cpu2000/results/res2003q3/cpu2000-20030711-02391.html > >Crafty base ratio 28.4 > >This of course doesn't take advantage of all the NUMA stuff you just put into >19.6. NUMA stuff will not change runtime of 4 independent Crafty copies with any decent OS. >It also doesn't take into account the factor of at least 3 price differential >between the two, or the fact that there isn't a whole lot of software written >for Itanium out there. I don't believe there is 3x price difference between Opteron and Itanium systems, at least for quad ones. I also don't think there is lot of software written for Opteron out there as well. I think the opposite is true -- there is more native Itanium software than there is native Opteron software :-) I have both quad Itanium2 and Opteron in my office. For Crafty Opteron is somewhat faster -- after lot of work. Without that work single-CPU Opteron was faster than single-CPU Itanium2, but quad Itanium2 was faster than quad Opteron. Lot of bright people worked to speed up Crafty on Opteron, including lead developers of NT :-) Not sure that some arbitrary application will have such attention. You can look at TPC-C results for quad Opteron and Itanium systems. I think you would be surprised. You can also look at the TPC-C results for Opteron with more than 4 CPUs -- and please let me know when you'll find those results. Thanks, Eugene
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