Author: Ernst A. Heinz
Date: 04:19:50 06/29/99
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On June 29, 1999 at 07:04:13, Vincent Diepeveen wrote: >On June 29, 1999 at 06:45:35, Ernst A. Heinz wrote: > >>Talking about preparation for the WCCC, I like to tell you a little >>secret. We were not able to do *any* special preparation because Markus >>finishes his M.Sc. at the end of July and I focused on writing my Ph.D. >>during the last months. The version of "DarkThought" that participated >>in Paderborn was at least 9 month old and is essentially equivalent to >>the one which played the test games listed on our WWW pages (see URL >>http://wwwipd.ira.uka.de/Tichy/DarkThought/). The program was mostly >>out of book after 4 moves or so which is actually not so bad as it may >>sound at first glance. >> >>=Ernst= > >Hello Ernst, > >I heart you ran on a 21264 chip. How fast is this chip and what >do you think of it? We ran on a 500MHz Alpha-21264 which is about 10% faster for "DarkThought" than the 767MHz Alpha-21164a we had in Paris. Hence, our hardware speed hardly increased at all since the Paris WMCC while that of all PC programs at least doubled since then. The Alpha-21264 is a nice CPU -- and it will be even nicer as soon as the bit-find and population-count instructions are implemented on-chip in the next stepping of the CPU (EV67/EV68). Performance-wise, the 500MHz Alpha-21264 is not much faster than 500MHz/600MHz P-IIIs, K6-3s, or K7s on SPECint95. =Ernst=
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