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From: holtz@zurich.csmil.umich.edu (Brian Holtz)
Newsgroups: comp.windows.x
Subject: Re: Multicasted X-Windows??
Keywords: multicast, multiple, X
Message-ID: <1989Dec13.151002.27574@csmil.umich.edu>
Date: 13 Dec 89 15:10:02 GMT
References: <1989Dec13.131654.16066@ux1.cso.uiuc.edu>
Sender: news@csmil.umich.edu
Reply-To: holtz@csmil.umich.edu (Brian Holtz)
Organization: The Cognitive Science and Machine Intelligence Laboratory
Lines: 13

In article <1989Dec13.131654.16066@ux1.cso.uiuc.edu>
garyf@mehlville.ncsa.uiuc.edu (Gary Faulkner) writes:

>We have heard a rumor that someone has made mods to X to allow a single
>X-client to multicast its output to multiple servers (and allow interaction
>from all of the users sitting at the display attached to those servers) 
>concurrently.

HP is working on something called SharedX, in which output is multicast
to a set of X-servers, and input is switchable among those servers
on the basis of a floor-passing protocol.  You can't do better than
floor-passing (i.e., you can't get true concurrency) without modifying
the client to deal with consistency maintenance.