Author: Frank Quisinsky
Date: 02:24:09 01/10/04
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On January 09, 2004 at 21:31:51, Robert Hyatt wrote: >On January 09, 2004 at 18:08:33, Frank Quisinsky wrote: > >>Hi there, >> >>is hyperthreading for Xeon processors interesting for computerchess? >>If yes, I must buy a new OS because Windows 2000 is not compatible to >>hyperthreading. >> >>I cann't believe that with 100% engine CPU power hyperthreading give me more >>power! For sure for different other software (grafic software and so on) but for >>computer chess? >> >>Best >>Frank > > >If the program supports parallel search, you can expect to see your raw NPS >go up from 0% to 30%. I have been getting 20% in the past, but I have made >some changes and have not tested recently. > >If your raw NPS increases 30%, your overall search time to a specific depth >ought to drop by maybe 20% if the parallel search is reasonably efficient. Hi Bob, thanks for your information! I have to buy a new OS :-(( I like Windows NT 4 SP6a, works now one year with 2000 and now XP :-( The biggest wish is a good Service Pack for Windows NT4 (SP7) with USB, Directx9 and Hyperthreading support! That's all :-) BTW: Bob do you think that SCSI is better as S-ATA (interesting for me if I used on two harddisk 5-pieces for engine-engine matches with ponder = on on dual Xeon. After my first test it seems that S-ATA is just great for tablebases. I made little experiments with a new Xeon Dual Board from Tyan: Tiger i7501R, S2735 http://www.tyan.com/products/html/tigeri7501r_spec.html Best Frank
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