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Subject: Re: A "mystery" with dual core

Author: Gian-Carlo Pascutto

Date: 11:19:43 11/02/05

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On November 02, 2005 at 12:08:31, Gregory Owett wrote:

>On November 02, 2005 at 11:19:49, Gian-Carlo Pascutto wrote:
>
>>On November 02, 2005 at 10:57:35, Gregory Owett wrote:
>>
>>>Recently, I launched two tournaments (ponder off) with the same participants, on
>>>two different machines.  Here results:
>>>
>>>On P4 2.2 T=15'+5" :
>>>
>>>1. Fruit 2.2.1 KS104     7,5 / 10
>>>2. Shredder 9 UCI        5,5
>>>3. Shredder 7.04 CLm1    5            25,00
>>>4. Fruit 2.2.1 Uri       5            23,00
>>>5. Shredder 8 CLD        3,5          17,25
>>>6. Fruit 2.2.1           3,5          16,50
>>>
>>>
>>>On AMD x2 dual core 4800+   T=15'+5" :
>>>
>>>1. Shredder 8 CLD        6,5 / 10
>>>2. Fruit 2.2.1 Uri       6
>>>3. Fruit 2.2.1 KS104     5            25,75
>>>4. Fruit 2.2.1           5            24,25
>>>5. Shredder 9 UCI        4,5
>>>6. Shredder 7.04 CLm1    3
>>>
>>>
>>>The success of Shredder 8 CLD (UCI) on the dual core machine, confirms what the
>>>task manager indicated, i.e. which Shredder 8 CLD, in spite of it is
>>>single-threaded engine,
>>
>>Shredder 8 is, as far as I know, a multiprocessing-capable engine.
>>
>>--
>>GCP
>
>That would be a very good news!  :-)  Thus all these engines:  fritz, shredder,
>hiarcs,...were multiprocessing-capable.  The established classification would be
>upset on dual core machines.

Fritz and Hiarcs are not multiprocessing capable. Only the Deep versions are.
Hiarcs doesn't have a Deep version.

Old Shredder versions were, essentially, both single and dual versions at the
same time, but Stefan stopped doing this in Shredder 9.

So, Shredder 8 is multiprocessor capable, but Shredder 9 is not, you need Deep
Shredder 9 instead.

--
GCP



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