Article View: comp.sys.dec
Article #5643Re: Question regarding DS3100 Floating Point
From: Tony Willis
Date: Thu, 15 Feb 1990 03:03
Date: Thu, 15 Feb 1990 03:03
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In article <1990Feb14.000213.6413@lavaca.uh.edu>, jet@karazm.math.uh.edu (J. Eric Townsend) writes: > 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? > > > Another question. Using a Fortran compiled executables in double precision > are more than 5 times as slow as single precsion... > > etc. Well, I've run the linpack benchmarks on my DECstation 3100; in single precision its about a 1.5 MFLOP machine and in double precision its about 1 MFLOP. Tony Willis BITNET: twillis@nrcdra.bitnet CDNNET: twillis@drao.nrc.ca, or willis@cs.athabasacau.ca
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!mit-eddie!uw-beaver!ubc-cs!alberta!atha!willis From: willis@cs.AthabascaU.CA (Tony Willis) Newsgroups: comp.sys.dec Subject: Re: Question regarding DS3100 Floating Point Summary: 1.5 Mflop sp, 1 Mflop dp Keywords: FP coprocessor Message-ID: <1662@atha.AthabascaU.CA> Date: 15 Feb 90 03:03:31 GMT References: <Feb.12.10.17.01.1990.23389@paul.rutgers.edu> <119@hammer.UUCP> <1990Feb14.000213.6413@lavaca.uh.edu> Organization: Athabasca University Lines: 22