Author: Robert Hyatt
Date: 12:36:54 03/31/03
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On March 31, 2003 at 02:08:39, Alex wrote: >On March 31, 2003 at 01:40:17, David Dory wrote: > >>On March 30, 2003 at 19:53:16, Alex wrote: >> >>>HELLO! What is the best Cache (chunk size , Min AND MAX ETC) For cranking out >>>Nodes per secon of chess programs? I use the Freeware / shareware utility >>>(found at voodoo files) and was wondering what "profile" ie "games" or "network" >>> etc to use for nodes per second and what setting(s) to use for the 3d graphics >>>for my win ME 256 MB rame 1.6 gig cpu Intel and my win 98 1 gig Ram and 600 >>>mghrz cpu computers??? Alex. >> >>Cache memory is not user selectable - it is hardware. >> >>If by "cache" you mean hashtable size (also referred to as transposition table >>size), you'll want to read the results, posted below, of Hyatt's tests in that >>regard with his chess program Crafty. >> >>The very best way to test this would be to actually do a similar test with your >>own computers using the programs you want to test. >> >>Lots of times we wave our hands and make lots of very intelligent theories as to >>which is best and why. But with a few tests we can absolutely know, for sure, >>the correct answer; for the hardware, operating system, and software in >>question. >> >>And it saves a lot of hand waving and theorizing. >> >>Dave >Noooo...I am NOT talking ram--but v-cache,chunk size etc. and virtual memory >thanks Aalex. The answer is _zero_. You do _not_ want to use virtual memory for a chess program. Not if you want a reasonable NPS value anyway... Software caches will have no effect on engine speed, except to slow it down, which is counter-productive.
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