Newsgroups: comp.arch
Path: utzoo!henry
From: henry@utzoo.uucp (Henry Spencer)
Subject: Re: A Recently Heard Story About Seymour Cray
Message-ID: <1988Dec16.184953.2876@utzoo.uucp>
Organization: U of Toronto Zoology
References: <90@stanton.TCC.COM> <813@munmurra.mu.oz> <3093@ttrdc.UUCP>
Date: Fri, 16 Dec 88 18:49:53 GMT

In article <3093@ttrdc.UUCP> levy@ttrdc.UUCP (Daniel R. Levy) writes:
>I don't know about now, but I've seen tongue-in-cheek stuff from Cray before.
>(The less polite would call it bullsh*tting.)  Like the way that the balance
>of the signal propagation delays in the DIGITAL LOGIC in a Cray-1 causes a
>a load with 0 power factor to be presented to the AC POWER LINE...

Are you sure somebody other than Cray hasn't been bullshitting you?  What
Cray claims is that the balanced differential circuits (propagation delays
have nothing to do with it) cause a DC load to be presented to the DC
power supplies (who cares what happens on the AC power line?) thus
eliminating nasty problems with standing waves in power and ground planes.
-- 
"God willing, we will return." |     Henry Spencer at U of Toronto Zoology
-Eugene Cernan, the Moon, 1972 | uunet!attcan!utzoo!henry henry@zoo.toronto.edu