Article View: comp.arch
Article #13389Re: new Gould NPL; Whetstone MIPS; Humpty-Dumpty
From: mash
Date: Fri, 03 Apr 1987 08:42
Date: Fri, 03 Apr 1987 08:42
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2877 bytes
``When I use a word,'' Humpty Dumpty said, in a rather scornful tone,
``it means just what I choose it to mean-neither more nor less.''
In article <326@elxsi.UUCP> sherm@elxsi.UUCP (Michael Sherman) writes:
>In article <1805@pyramid.UUCP> csg@pyramid.UUCP (Carl S. Gutekunst) writes:
>>In article <501@sw1e.UUCP> uusgth@sw1e.UUCP (uusgth) writes:
>>>The NP1 is the first of a new architecture from Gould, called the NPL series,
>>>that brings ultra-high performance to minicomputers at price performance
>>>factors well below the current industry.
>>>
>>>The NP1 is an ECL, gate-array processor sitting on a very fast bus (154 mega-
>>>bytes per second).With 2 cpu's on the same bus, coupled with a math accelera-
>>tor unit, it does 12 MIPS sustained at a base price of about $400,000....
....
> The ELXSI is a multiprocessor with an architecture similar to the
> description of the Gould NP1 given in the original posting.
......
> The 6410 measures about 7 Whetstone MIPS, while the 6420 does about
> 12, which sounds the same as the Gould CPU described above.
> I don't know how Gould is measuring their MIPS, however. If you
> measure MIPS by running nroff and calling a VAX/780 1 MIP, then
> an ELXSI 6410 is about a 4 (like a VAX 8600) and a 6420 is about a
> 6 (like a VAX 8650 or 8700). Floating point, especially 64-bit
> floating point, is much faster.
What are Whetstone MIPS? ....
a) Are they DP MEgaWhetstones? (or SP?)
b) Are they X times a VAX 11/780, if so,
b1) VAX/VMS
b2) 4.3BSD?
It makes a difference: a MIPS M/800 looks like:
a: 6.9
b1: 8.3
b2: 16.8
Does anybody know if the new Gould systems have published numbers for things
like Whetstones, Linpacks, Dhrystones, etc. [Numbers for the new ELXSI's
would be nice too].
This sequence got started by people quoting press releases with a lot of
MIPS numbers thrown around but not defined. sigh. At least sherm included
one MIPS definition, thank goodness.
--
-john mashey DISCLAIMER: <generic disclaimer, I speak for me only, etc>
UUCP: {decvax,ucbvax,ihnp4}!decwrl!mips!mash, DDD: 408-720-1700, x253
USPS: MIPS Computer Systems, 930 E. Arques, Sunnyvale, CA 94086
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!utgpu!water!watnot!watmath!clyde!rutgers!lll-lcc!pyramid!prls!mips!mash From: mash@mips.UUCP Newsgroups: comp.arch Subject: Re: new Gould NPL; Whetstone MIPS; Humpty-Dumpty Message-ID: <255@winchester.mips.UUCP> Date: Fri, 3-Apr-87 03:42:32 EST Article-I.D.: winchest.255 Posted: Fri Apr 3 03:42:32 1987 Date-Received: Sun, 5-Apr-87 00:43:27 EST References: <501@sw1e.UUCP> <1805@pyramid.UUCP> <326@elxsi.UUCP> Reply-To: mash@winchester.UUCP (John Mashey) Organization: MIPS Computer Systems, Sunnyvale, CA Lines: 46 Keywords: gould supermini, elxsi