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Re: [Xen-users] Multi headed, Multi user partially virtualized environme

To: Simon Hobson <linux@xxxxxxxxxxxxxxxx>
Subject: Re: [Xen-users] Multi headed, Multi user partially virtualized environment - feasible?
From: Scott Damron <sdamron@xxxxxxxxx>
Date: Sun, 10 Jul 2011 11:57:27 -0500
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Those desktops sound like a large version of the SGI stuff of the 90's!

On Sun, Jul 10, 2011 at 8:44 AM, Simon Hobson <linux@xxxxxxxxxxxxxxxx> wrote:
> Rudi Ahlers wrote:
>> Wow, I honestly didn't know this could actually be done,and sorry for my
>> ignorance in this regard.
> That's understandable - the "PC uniformity" has a lot to answer for, and the
> BIOS limitations even more.
> I suspect what would be needed would be a layer of middleware to act as an
> IO broker/router to match up the right input and output devices with the
> right process. I suspect that in the Linux multi-head projects, it's just
> been done via multiple instances of X, with each X session mapped to a
> specific output display and set of inputs.
> As an aside, I recall when the company I worked for started investing
> heavily in CAD in the late 80's. When I say investing heavily, I mean eye
> watering amounts of cash - we weren't talking desktop workstations here !
> Well actually we were talking desktops - the whole desk WAS the workstation
> ! In a small box in one end was the graphics processor, a big display up
> front, and the top of the 'desk' was a huge digitiser tablet. But, and the
> reason it's topical for the thread, all this was was a graphics terminal -
> it shared a CPU (VAX IIRC) with several other desks. In effect it was a high
> performance vector graphics version of the old "green screen" terminal setup
> on mainframes and minis.
> As I recall there were endless complaints about poor performance, I did hear
> a story that we ran about 10 heads to one processor - while the manufacturer
> recommend a max of 4 :-/
> --
> Simon Hobson
> Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
> author Gladys Hobson. Novels - poetry - short stories - ideal as
> Christmas stocking fillers. Some available as e-books.
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