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Subject: Re: question about using computer with 2 processors

Author: Uri Blass

Date: 06:40:45 06/02/04

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On June 02, 2004 at 09:17:45, Jorge Pichard wrote:

>On June 02, 2004 at 09:13:03, Uri Blass wrote:
>
>>On June 02, 2004 at 09:00:53, Ricardo Gibert wrote:
>>
>>>On June 02, 2004 at 08:40:55, Uri Blass wrote:
>>>
>>>>I plan to buy a cheap computer with 2 processors dual PIII1000 Mhz for testing.
>>>>I will probably also buy more expensive computer for WCCC with one processor
>>>>when I may use the cheap computer for testing with ponder on.
>>>>
>>>>
>>>>I still did not buy it and before buying it I have a question.
>>>>
>>>>The question is if I can tell the program which processor to use or tell the
>>>>program to choose automatically one of them when I have no control about it.
>>>>
>>>>Another question is if I can be sure that the processors are of equal speed(if
>>>>they are not of equal speed then the question which processor the program is
>>>>using may be important.
>>>>
>>>>Can I be sure that one 1 Ghz is not 1.01ghz when the second 1ghz is 0.99 ghz?
>>>>
>>>>Uri
>>>
>>>This would make make one processor a little over 1.02 times faster for a less 3
>>>elo advantage if it assumed that each doubling of speed is worth 100 elo. To
>>>resolve such a difference in your testing would require an obscene number of
>>>games. In other words, it's not relevant.
>>
>>I agree that it is not a big difference but if there is a simple way to avoid
>>noise it is better to do it and I prefer to be able to control the processor
>>that the program is using so I do not care about difference in speed when I
>>always use processor A for movei and processor B for the opponents.
>>
>>Uri
>
>Since the difference in speed if there happens to be a significant difference is
>so minimal, simply switch from processor A for Movei to processor B to the
>Opponent and vise versa after half way of your testing.
>
>Jorge

This is exactly the question if I can define which processor to use for every
program.

Uri



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