Date: Fri, 13 Jun 2003 21:30:34 +0100
From: John Bradford <john@grabjohn.com>
Message-Id: <200306132030.h5DKUYlu000211@81-2-122-30.bradfords.org.uk>
To: john@grabjohn.com, jsimmons@infradead.org
Subject: Re: Real multi-user linux
Cc: linux-kernel@vger.kernel.org, terje_fb@yahoo.no
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 1005
Lines: 22

> > So, instead of trying to add more and more terminals to a single box,
> > you could stick with four-headed X servers, which would probably be
> > more scalable.

> The biggest limitation is the PCI bus. Only so many cards can go in. I
> guess you could fill the machine up with graphics cards and go with
> external USB audio and TV tuner cards. One to match each graphics card.

No need:

A single machine can support four displays, keyboards, and mice easily.  We
can use such machines as X servers for four people.  Each one can be connected
via Ethernet to the Linux supercomputer.  That way you get the cost advantages
of the multi-headed setup, with the scalability of the X server setup.  I think
you could scale to 64 or 128 users like that.

John.
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