Author: Robert Hyatt
Date: 07:48:30 01/10/04
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On January 10, 2004 at 05:24:09, Frank Quisinsky wrote: >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'd take scsi any day myself. It offers some things that non-scsi simply can't handle. > >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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