Alt-BEAM Archive
Message #09779
To: beam@sgiblab.sgi.com
From: Jean auBois aubois@trail.com
Date: Fri, 04 Feb 2000 21:37:00 -0700
Subject: [alt-beam] Hexcores, microcores, bicores and all that
At 07:05 PM 2/4/00 -0500, Mark W. Tilden wrote:
>The pattern looks like this...
>0.5, 0.5, 1, 0.5, 0.5, 1
>The phase angles are tightly locked.
What appears to be going on is that the system is a chaotic oscillator with
two strong attractors and three weak ones. The three weak cases are: no
processes (but the power IS on), one process, and two processes. The two
strong cases are the saturated state and the hypersaturated state -- in the
latter case it seems as though the term "process" doesn't exactly apply
very well. If the power supply isn't clean or there is some kind of
electrical interference (say, motor noise), I've seen the weak cases
(sometimes) turn into the saturated case but never the converse. In fact,
I've seen discussion on this list about a circuit that detects any
situation OTHER than the single process situation which then resets the loop.
I reckon that one only gets the hypersaturated state if the power has a
particularly noisy startup, or as Mark says, you shove an extra pulse in
with the right timing -- I've not seen any of the other cases turn into the
hypersaturated state.
jab
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