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From: taab5@isuvax.iastate.edu (Marc Barrett)
Subject: Re: A3000 CPU Wars!!
Message-ID: <1991Jun5.110937.14748@news.iastate.edu>
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Reply-To: taab5@isuvax.iastate.edu
Organization: Iowa State University, Ames, IA.
References: <16888@helios.TAMU.EDU> <1991Jun5.060518.9683@news.iastate.edu>,<1991Jun5.072620.18879@mintaka.lcs.mit.edu>
Date: Wed, 5 Jun 1991 11:09:37 GMT
Lines: 56

In article <1991Jun5.072620.18879@mintaka.lcs.mit.edu>, rjc@geech.gnu.ai.mit.edu (Ray Cromwell) writes:
>In article <1991Jun5.060518.9683@news.iastate.edu> taab5@isuvax.iastate.edu writes:
>>   The reason is that neither AmigaDOS nor UNIX (the two operating
>>systems you can run on an A3000) support multiprocessing.  For this
>
>  Not quite. AT&T(or was it Sequent?) is working on a version of 
>SysV which will support multiple processors. There are also some
>microkernels floating around that support multiprocessing. Multiprocessing
>isn't prohibited by AmigaDOS.  [rest deleted]

   I should have said that multiprocessing is not supported by Amiga UNIX
yet.  Yes, there are versions of System V floating around that support 
symmetric multiprocessing, modified by Compaq, Solbourne, and other companies
that have multiple-processor UNIX systems.  OSF/1 is also supposed to
support symmetric multiprocessing as a standard feature.  However, none of
these multiprocessing operating systems are available for the Amiga.
AT&T is supposed to be working with Solbourne on a version of Sys V R4
that supports symmetric multiprocessing, and I am sure the Amiga will
have it as soon as it is available.

>>      I hope this answers your question.                
>
>  I think the original poster was slightly confused and thought that
>adding processors together is like adding numbers. It isn't that
>easy. (reminds me of relativety and how people thought velocity
>vectors were added like any other quantity)
>
>  I'm waiting for the day when they can build a 1 teraflop computer and
>actually have benchmarks run at that speed (without recoding the
>benchmark to run in parallel)
>
>  Hmm, anyone wanna tell me how transputers work? (multiprocessing)?
>
>>>
>>>Andy.
>>  -------------------------------------------------------------
>> / Marc Barrett  -MB- | BITNET:   XGR39@ISUVAX.BITNET        /   
>>/  ISU COM S Student  | Internet: XGR39@CCVAX.IASTATE.EDU   /      
>>------------------------------------------------------------    
>>\  ISU : The Home of the Goon                             /
>> \       Who wants to Blow Up the Moon                   /
>>  -------------------------------------------------------
>
>
>--
>/ INET:rjc@gnu.ai.mit.edu     *   // The opinions expressed here do not      \
>| INET:r_cromwe@upr2.clu.net  | \X/  in any way reflect the views of my self.|
>\ UUCP:uunet!tnc!m0023        *                                              /
>
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 / Marc Barrett  -MB- | BITNET:   XGR39@ISUVAX.BITNET        /   
/  ISU COM S Student  | Internet: XGR39@CCVAX.IASTATE.EDU   /      
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\  ISU : The Home of the Goon                             /
 \       Who wants to Blow Up the Moon                   /
  -------------------------------------------------------