Author: Frank Phillips
Date: 05:36:14 12/31/02
Go up one level in this thread
On December 30, 2002 at 23:38:08, Matt Taylor wrote: >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. A licence restricts the configuration of the machine you can run the software on that you bought - incredible. > >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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