Re: Question regarding DS3100 Floating Point

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Article #5623

#5623

From: Steve Thompson
Date: Tue, 13 Feb 1990 19:28

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In article <119@hammer.UUCP> jockc@idsila.com (Jock Cooper) writes:
>I have this ray tracing toy that runs faster on our MicroVax 
>(has FP coprocessor) than on my DECstation 3100. Does the 3100 
>have a Floating Point chip or what? Or is it an option?

Well, I have two main applications that I run on a VAXstation 3100 and
a DECstation 3100, using the SAME source code in both cases (it's
fortran). They are a Monte Carlo and a Molecular Dynamics simulation
of a fluid stucture. The MC code is 10% faster on the VAXstation than
on the DECstation, and the MD code is 4 times faster on the DECstation.
For both programs, the VAXstation (VMS) compiles about 7 times faster
than the DECstation (yes, 7).

Steve

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Message-ID: <9711@batcomputer.tn.cornell.edu>

Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!lll-winken!brutus.cs.uiuc.edu!rpi!batcomputer!thompson

References: <Feb.12.10.17.01.1990.23389@paul.rutgers.edu> <119@hammer.UUCP>

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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!lll-winken!brutus.cs.uiuc.edu!rpi!batcomputer!thompson
From: thompson@batcomputer.tn.cornell.edu (Steve Thompson)
Newsgroups: comp.sys.dec
Subject: Re: Question regarding DS3100 Floating Point
Keywords: FP coprocessor
Message-ID: <9711@batcomputer.tn.cornell.edu>
Date: 13 Feb 90 19:28:17 GMT
References: <Feb.12.10.17.01.1990.23389@paul.rutgers.edu> <119@hammer.UUCP>
Reply-To: thompson@tcgould.tn.cornell.edu (Steve Thompson)
Organization: Cornell Theory Center, Cornell University, Ithaca NY
Lines: 15

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