Author: Matt Taylor
Date: 20:38:08 12/30/02
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On December 30, 2002 at 22:13:43, Robert Hyatt wrote: >On December 30, 2002 at 19:39:23, Frank Koenig wrote: > >>Two questions. >> >>One) Will Intel's HT technology be able to help chess programs above and beyond >>just allowing one CPU to appear as two? >> >>Second) If you are running XP, will HT require XP Pro instead of XP Home to take >>advantage of it? >> >>Thanks, >> >>Frank > > >I can't answer the last question.... As to the first, you can expect a parallel >searcher to run 20-30% faster using two "virtual cpus" than using one real cpu. > >YMMV depending on the program however, as my numbers are numbers produced only >by Crafty on a 2.8ghz xeon... I can't really answer the last question either, but I will speculate anyway (because it's fun). I checked the license agreement for Windows XP Professional, and it only says that it is licensed for up to 2 processors. It makes no mention of physical/logical processors, so presumably it will run either with SMP or HT. I thought Windows XP Home supported 2 processors as well, but I only have 2 boxes with Windows (including my work PC) and both run XP Professional. -Matt
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