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Subject: Re: So why *does* Fritz beat Crafty?

Author: Eugene Nalimov

Date: 12:43:42 03/27/99

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On March 27, 1999 at 12:45:05, Bruce Moreland wrote:

>
>On March 27, 1999 at 03:55:25, blass uri wrote:
>
>>It is not fair because part of the effort in doing the program crafty is by
>>doing it a parallel machine.
>>I believe that Bob could do in the same time a better program if he did not
>>waste time for doing a SMP program.
>
>If someone wants to compare Crafty and Fritz I think it would be fair to compare
>them on uniform high-end (single-processor) hardware, since they are both
>designed to work on that hardware.
>
>If one of them would only run on a 286, I don't think it would be fair to make
>them both run on a 286.
>
>But multiprocessor machines are still a super- high-end thing so it's probably
>not fair to say:  Here is the machine, it has 4 processors, feel free to use
>them in this match.  Oh, what did you say Fritz, you can't use 4 processors, you
>can only use one?  Well, that's too bad for you.  You might as well put them
>both on an Alpha and expect Fritz to use an emulator.
>
>In a few years, maybe, because everyone will have a multiprocessor machine, but
>of course everyone will be multiprocessor then.
>
>Bob's put time in being SMP, sure, but I think he supports single-processor
>machines and runs well on them.
>
>bruce

Bob spent his time working on SMP. Also, he deliberatly lost some
performance by using C instead of assembly.

Author of Fritz decided not to include SMP code, as well as write
his program on assembly to squize last pieces of performance.

By using single-CPU x86-compatible machine you favor Fritz - he will
be running on the best possible platform.

Maybe it's better to put some dollar limit - e.g. "on a machines
that cost not more than $7,500".

Eugene



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