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Subject: Re: Which programs make use of 2 or more processors?

Author: James Swafford

Date: 09:11:26 06/22/99

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On June 22, 1999 at 05:43:15, Vincent Diepeveen wrote:

>On June 22, 1999 at 02:27:32, Jouni Uski wrote:
>
>>On June 22, 1999 at 02:20:06, Mark Longridge wrote:
>>
>>>Does anyone know if there are any programs aside from crafty which
>>>support more than 1 cpu? I'm interested in multi-cpu software,
>>>both shareware and commercial.
>>>
>>>Thanks
>>
>>Fritz5.32 supports 2 prosessors under Windows NT. So You can run engine-engine
>>with ponder!
>>
>>Jouni
>
>DIEP: n processors, where n is any number > 0.
>email me: diep@xs4all.nl
>
>DIEP runs both under linux and NT.
>
>Speedup out of 4 processors at world championship was 4.0

How do you get a speedup of 4.0 with 4 processors?
Do you claim *no* loss?  For n processors, is the speedup
always = n?

I've heard others state that 3.2 or 3.3 is a good speedup
for 4 processors....

Please enlighten me.

--
James


>
>The parallellism in DIEP is an improved version of the Cray Blitz
>parallellism.
>
>Many thanks to Hyatt for explaining me how to do parallellism and
>giving me the opportunity to run and test at 4 processors!
>
>Greetings,
>Vincent



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