Author: Matt Taylor
Date: 17:12:56 12/30/02
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On December 30, 2002 at 19:17:38, Bob Durrett wrote: >On December 30, 2002 at 16:06:09, Matt Taylor wrote: > >>On December 30, 2002 at 11:39:37, Vincent Lejeune wrote: >> >>>Details of the SPECint2000 : >>>http://www.heise.de/ct/03/01/018/bild.gif >>> >>>Athlon64@1.2GHz : 868 >>>Pentium4@2.2Ghz : 850 >>> >>>Not bad, but no revolution, I thought it would be faster than that on a 64 bits >>>machine ... >>> >>>The athlon would run at about 2 Ghz in april 2003 >> >>Is that compiled in 64-bit (native) or using the same 32-bit benchmark on both? >>There is a huge difference between 64-bit code and 32-bit code here, and it's >>not JUST because of machine word differences which will likely benefit Chess >>engines some. >> >>-Matt > >This is the HUGE PROBLEM with using Crafty for this purpose. Crafty already >runs on 64 bit machines, if I understand Hyatt correctly. Other engines, not >designed for 64 bit might give entirely different results. > >Bob D. Itanium is 64-bits. The big problem here lies less in the fact that it's a 64-bit machine and more in the architectural differences. The Athlon64 has more registers which means fewer memory accesses since more data can be cached in the registers. In my opinion, the fact that it's 64-bits will contribute only a little bit. It is difficult to say... -Matt
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