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Subject: Re: Chess over LAN revisited - APHID

Author: Robert Hyatt

Date: 08:18:43 09/17/01

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On September 17, 2001 at 06:47:39, Vincent Diepeveen wrote:

>On September 17, 2001 at 05:07:55, Gian-Carlo Pascutto wrote:
>
>The problems are huge. I do not know who wrote the 6-7
>crap. Crafty AFAIK never was running over a network properly.
>
>Bob can answer this better of course, but it's complete nonsense
>that you get 6.0 - 7.0 out of 16 processors at a 100mbit network.

I don't agree.  They _did_ it.  Schaeffer _did_ it.  Others have done
it also...


>
>Most likely the speedup is for a crafty version with more extensions
>WITH shared memory. speedup is in general worse when the searchspace
>you search is not overlapping for each processor.
>
>>Hi all,
>>
>>I missed most of the relevant thread but after quickly
>>scanning through some posts I wonder why nobody has
>>brought up APHID.
>>
>>The reported speedups for Crafty (version 12.something)
>>with 16 processors are 6-7 without shared memory, and 9
>>with shared memory.
>>
>>Aditionally. the library itself as well as a 'distributed'
>>Crafty that uses it are already available *now*. It shouldn't
>>be too hard to adapt the very latest Crafties to it either.
>>
>>Whats the general opnion about it? Nobody experimented
>>with this Crafty?
>>
>>--
>>GCP



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