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From: hammond@petrus.UUCP
Newsgroups: net.works,net.micro.16k
Subject: Re: 32032 UNIX
Message-ID: <278@petrus.UUCP>
Date: Thu, 7-Feb-85 07:59:10 EST
Article-I.D.: petrus.278
Posted: Thu Feb  7 07:59:10 1985
Date-Received: Fri, 8-Feb-85 02:02:34 EST
References: <357@topaz.ARPA> <320@terak.UUCP>
Organization: Bell Communications Research, Inc
Lines: 26
Xref: watmath net.works:893 net.micro.16k:189

> We have some of those 10Mhz rev N parts, in our work station and
> what has been puzzeling me, is that these machines out perform out
> Vax 750. (not in compiles ofcourse, but in execution times)
> 
> Can some one out there shed some light on why a 32016, runs faster
> than a 750, in programs that access memory (using pointers or matrix type
> operations.)
> 
> Sohail Hussain
> 
Issues: Does your 32016 based workstation have a 32081?
	Are you using the 32082 MMU?
        Does your 750 have a floating point accelerator?
        Is your benchmark program small enough to fit in memory,
        (i.e. roughly the same number of page faults on both machines?)

Questions:  How much faster, i.e. 5, 10, 20 30 %?

I have a NSC Sys 32 (A 32016 based, 4.1 bsd development system)
It runs about the same as an 11/23, or about 1/3 of a 750.
My boss has been giving me grief about this, so your info is most
encouraging.

Note a 32032 should give roughly 1.25 times the performance of a 32016.
The 32 bit bus doesn't buy you that much more, except in applications
such as copying data memory to memory.