Re: Apple? (subject change)

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Article #1298

#1298

From: Jim Wong
Date: Sat, 19 Aug 1995 23:18

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In article <415mt0$psf@sundog.tiac.net>, Jim Williams <williams@tiac.net> wrote:
> I'm not sure if it is my understanding of the term SMP is off, your
> definition of Hydra is off, or if you are right.  What does SMP mean
> -- in particular the "S" part?  Also, Exactly what was (is?) Hydra?
> (I have some **extrememly** vague memory of the word.  I have the
> feeling that *all* I knew was that there was something called Hydra.)
> 
> My gut feeling is that Hydra was an early multi-processor project, but
> that the methodology was not very similar to what is now called SMP.
> I admit that I'm guessing.

The C.mmp was a research project at CMU consisting of 16 PDP-11s connected
through a crossbar to 16 memory modules; the result was a shared-memory
MIMD system.  Hydra, the operating system of the C.mmp, allowed multiple
processors to access operating system functionality simultaneously, as
long they didn't make use of the same data structures.

-- 
Jim Wong (jd-wong@uiuc.edu)

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<docjoe-1408950754370001@ip100.wilmington.de.interramp.com> <40viu3$kti@sundog.tiac.net> <nevin-1708950756520001@mac-nevin.cs.arizona.edu> <40vpim$7kl@goonsquad.spies.com>  <411tic$gbg@sundog.tiac.net> <41372h$4m6@cerberus.ibmoto.com> <415mt0$psf@sundog.tiac.net>

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Path: arc1-ca.pugleaf.net!antwerp-1.slip.uiuc.edu!user
From: jd-wong@uiuc.edu (Jim Wong)
Newsgroups: comp.sys.powerpc,comp.os.linux.advocacy,comp.sys.mac.advocacy,comp.os.os2.advocacy,comp.sys.amiga.advocacy,comp.sys.intel
Subject: Re: Apple? (subject change)
Date: Sat, 19 Aug 1995 18:18:08 -0500
Organization: University of Illinois
Message-ID: <jd-wong-1908951818080001@antwerp-1.slip.uiuc.edu>
References: <docjoe-1408950754370001@ip100.wilmington.de.interramp.com> <40viu3$kti@sundog.tiac.net> <nevin-1708950756520001@mac-nevin.cs.arizona.edu> <40vpim$7kl@goonsquad.spies.com>  <411tic$gbg@sundog.tiac.net> <41372h$4m6@cerberus.ibmoto.com> <415mt0$psf@sundog.tiac.net>
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