Article View: comp.arch
Article #20786Re: One aspect of bandwidth (backplane bus)
From: Dave Collier-Brown
Date: Tue, 18 Apr 1989 00:37
Date: Tue, 18 Apr 1989 00:37
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1585 bytes
In article <17298@cup.portal.com> bcase@cup.portal.com (Brian bcase Case) writes:
| Though it's done for different reasons, Macintosh is a sign of times to
| come: all the (high-speed) main memory is "special," and is right next
| to the CPU/cache. What do you do for multiprocessors? Build that ECL bus
| and charge several $million.
Well, sort of.
You do charge several millions, but you don't so much build a bus as
you do a star, with the memory in the middle and the processors out on
the arms. The thing in the middle is called a system controller on a 'bun
and costs a non-trivial amount of money.
One of my dear friends still works on Honeywells and regularly gets
into uncontrolled snickering fits when the magazine-types start talking
about bus minis replacing mainframes because they have so many more more
mips...
--dave (who worked for HW before all the Bull) c-b
--
David Collier-Brown, | {toronto area...}lethe!dave
72 Abitibi Ave., | Joyce C-B:
Willowdale, Ontario, | He's so smart he's dumb.
CANADA. 223-8968 |
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Path: arc1-ca.pugleaf.net!utzoo!mnetor!tmsoft!dptcdc!berner!lethe!dave From: dave@lethe.UUCP (Dave Collier-Brown) Newsgroups: comp.arch Subject: Re: One aspect of bandwidth (backplane bus) Summary: reinventing the mainframe... Message-ID: <2222@lethe.UUCP> Date: 18 Apr 89 00:37:51 GMT References: <407@bnr-fos.UUCP> <17500@obiwan.mips.COM> <17527@winchester.mips.COM> <17298@cup.portal.com> Reply-To: dave@lethe.UUCP (Dave Collier-Brown) Organization: Outerleaf, news courtesy of Systems Software Lines: 24