Posted by
Phil Henshaw-2 on
Mar 29, 2008; 7:56pm
URL: http://friam.383.s1.nabble.com/Wed-Blender-Stereo-and-Computational-Photography-Videography-for-Cultural-Preservation-tp525972p525989.html
Marcus,
I guess I'm not being clear. I'm trying to compare the use central managed
solutions and user negotiated solutions in this fairly simple problem to
develop a way of discussing the more complicated situations where efficient
and fair central resource management is not possible. For lots of things
central control is going to work well and be naturally more efficient.
Without a central operator different users connected to a bus would need
some way of telling what the load on it in the near future would be, in
order to be ready to use it when it wasn't busy. Would there be any way
for users to sense that other than to sense increase or decrease in
electrical load on the bus somehow? In open systems the usual way to tell
if something else is using a common resource is finding disturbances around
it, and signs of depletion in what's available for yourself. Bees might
skip flowers that have been recently visited, for example.
Phil
>
> Phil Henshaw wrote:
> > The network manager might be really 'out to lunch' some times though,
> and
> > the users needed to share the resource without that global view and
> central
> > control. What could they accomplish just between themselves, is the
> > question.
> That's a reasonable question to think about in some other context, but
> it simply doesn't need to apply here.
>
> It is unfortunately the case that many computer systems are not
> configured and maintained to the level I am describing.
>
> In these situations, users may be forced to do load balancing in some
> semi-negotiated way, but that's because of a Bad Situation, not because
> of technical necessity. Bring the Bad Situation to light and get it
> fixed.
> > They'd have virtually none of the information the manager uses
> > and none of the control. If left to themselves, how would they do
> it?
> >
> The operating system, queuing system, or network switch firmware can do
> that just fine.
>
> If any of this software is not up to the job, it's not a structural
> constraint of the universe, it's just a bug. Bugs should be fixed.
> Network managers usually don't fix bugs themselves, but instead decide
> to change vendors. That has the same sort of effect.
>
> Marcus
>
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