Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!wuarchive!udel!rochester!rutgers!cbmvax!daveh
From: daveh@cbmvax.commodore.com (Dave Haynie)
Newsgroups: comp.sys.amiga.advocacy
Subject: Re: AMIGA
Message-ID: <21318@cbmvax.commodore.com>
Date: 6 May 91 23:25:27 GMT
References: <1991Jan10.082327.7378@rice.edu> <1991Jan10.095304.16900@mintaka.lcs.mit.edu> <1991Jan10.151816.13893@rice.edu> <1991Jan10.164423.23644@mintaka.lcs.mit.edu> <1991Jan10.194127.20625@rice.edu> <17564@cbmvax.commodore.com> <.v1G&v0*1@cs.psu.edu>
Reply-To: daveh@cbmvax.commodore.com (Dave Haynie)
Distribution: usa
Organization: Commodore, West Chester, PA
Lines: 31

In article <.v1G&v0*1@cs.psu.edu> melling@cs.psu.edu (Michael D Mellinger) writes:

>In article <17564@cbmvax.commodore.com> daveh@cbmvax.commodore.com (Dave Haynie) writes:

>   that would have made far more impact for the same price than the DSP.  
>   Especially a DSP that can't be used for mathematics; something most 
>   Workstations just about require these days is at least 1.5-2 MFLOPS or better.

>Dave!  I didn't expect you to make such a big mistake!  Aren't you an
>engineer?  The NeXT does at least 2.5MFLOPS.

Well, I was speaking of the DSP itself.  A 68040 could be said perhaps to peak
at 2.5 MFLOPs.  When running full 68882 code, it can sometimes perform 
reasonably well.  At other times, it seems to go about as fast as an equivalent
68882, that is, 1/3 MFLOPS.  Check out the latest UNIX Review for some numbers
on one of the HP '040 machines.  The HP machines are better 68040 machines than
NeXT, plain and simple (of course, HP has for quite some time built the best
680x0 machines in any 680x0 generation).  Perhaps NeXT and others will get new
FPU code generators that manage this stuff without all those FPU traps.  Even 
though the '040 has a few things that make trap handling better than in the 
past, they're still very inefficient.

And yeah, I are an engineer.

>-Mike


-- 
Dave Haynie Commodore-Amiga (Amiga 3000) "The Crew That Never Rests"
   {uunet|pyramid|rutgers}!cbmvax!daveh      PLINK: hazy     BIX: hazy
      "That's me in the corner, that's me in the spotlight" -R.E.M.