Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!seismo!think!husc6!hscfvax!pavlov From: pavlov@hscfvax.UUCP (840033@G.Pavlov) Newsgroups: net.micro.68k Subject: Re: BYTE "68000" issue Message-ID: <221@hscfvax.UUCP> Date: Thu, 11-Sep-86 23:16:17 EDT Article-I.D.: hscfvax.221 Posted: Thu Sep 11 23:16:17 1986 Date-Received: Fri, 12-Sep-86 22:15:53 EDT References: <3868@ut-ngp.UUCP> <1058@hoptoad.uucp> Organization: Health Sciences Computing Facility, Harvard University Lines: 22 In article <1058@hoptoad.uucp>, gnu@hoptoad.uucp (John Gilmore) writes: > > UNIX and the MC68000 (by Andrew L. Rood, Robert C. Cline, Jon Brewster) > > The powerful yet simple programmer's model offered by the 68000's > > architecture makes UNIX implementation easy. > > Flame on. > < much (most likely) legitimate criticism, including .... > > * Unix has a lot of trouble with multiprocessor environments. People > who run Unix on MP hardware did a lot of hard work on Unix to get > there. > I don't claim to know much about multiprocessors, coprocessors, etc. However, I was responsible for an HP9000 system for several years, a system which can include up to 3 processors, running under HP's Unix implementation, HP-UX. This system was rock-solid (no software crashes; one 7-month stint between hardware failures), the multiprocessor configuration was completely transparent, and the "power" increment of each cpu was exactly as advertised. So I would say that someof the personnel at HP, at least, do have a good understanding of multiprocessor configurations running under Unix. greg pavlov, fstrf, amherst, ny