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From: phyllis@utcsrgv.UUCP (Phyllis Eve Bregman)
Newsgroups: ont.events
Subject: J.P. Black: "UNIX United and The Newcastle Connection
Message-ID: <3076@utcsrgv.UUCP>
Date: Mon, 9-Jan-84 10:16:56 EST
Article-I.D.: utcsrgv.3076
Posted: Mon Jan  9 10:16:56 1984
Date-Received: Mon, 9-Jan-84 10:33:10 EST
Organization: CSRG, University of Toronto
Lines: 33

      UofT Department of Computer Science Seminar Schedule for
                the week of January 9, 1984
		
Thursday, January 12th, 4:00 P.M., SF1105:  Dr. J.P. Black,
   Computing Laboratory, University of Newcastle Upon Tyne, U.K.
   "UNIX United and the Newcastle Connection".

   ABSTRACT:  Unix United is an architecture for a distributed
   system based on UNIX.*  Our aim during its design has been to
   extend UNIX semantics consistently from a single system to a
   collection of independent UNIX systems.  The resulting distributed
   system is functionally identical to a single UNIX system.
   Nevertheless, the component UNIX systems remain quite loosely
   coupled:  each component may use a different type of processor
   or (UNIX-like) operating system, and maintains its own user
   community and administrative autonomy.

   The Newcastle Connection is our implementation of the UNIX United
   architecture.  It is a transparent software layer which relies on
   its supporting UNIX kernel and provides UNIX United semantics to
   its callers.  Consideration of the Newcastle Connection as a
   virtualization of UNIX has led to a general recursive structuring
   principle for computer system design, as well as designs and
   prototypes for "orthogonal" virtualizations of UNIX.  These include
   a triplicated fault tolerant virtual UNIX system, a distributed
   secure virtual UNIX system and a non-UNIX terminal concentrator
   masquerading as a UNIX system.

   *UNIX is a trademark of Bell Labs.
-- 
		Phyllis Eve Bregman
		CSRG, Univ. of Toronto
		{decvax,linus,ihnp4,uw-beaver,allegra,utzoo}!utcsrgv!phyllis