Path: utzoo!utgpu!water!watmath!clyde!att!pacbell!lll-tis!lll-winken!spl1!laidbak!lm
From: lm@laidbak.UUCP (Larry McVoy)
Newsgroups: comp.arch
Subject: Re: Cray & Amdahl Virtual memory debate
Message-ID: <1535@laidbak.UUCP>
Date: 24 Jul 88 23:58:05 GMT
References: <4232@cbmvax.UUCP> <76700035@p.cs.uiuc.edu> <5342@june.cs.washington.edu> <537@ns.UUCP> <1534@laidbak.UUCP>
Reply-To: lm@laidbak.UUCP (Larry McVoy)
Organization: LAI Chicago
Lines: 13

Another thing occurs to me: Brian U of Cray said that their reason for no VM
is speed.   Someone else pointed out that there is a big difference
between a development shop (i.e., lots of small processes) and an
installation (i.e., one large Fortran process).  My take on this is that
VM may be a lose for the Fortran codes of the world but it is almost 
certainly a win for everyone else.  In other words, Cray is locking 
theirselves into the big iron Fortran club (and out of other places?).

Oh yeah, add demand paging (read: quick startup time) to my list in the
previous article.  Silly of me to forget that.

-- 

Larry McVoy      (laidbak!lm@sun.com | ...!sun!laidbak!lm | 800-LAI-UNIX x286)