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From: mjg@ecsvax.UUCP (Michael Gingell)
Newsgroups: net.micro.amiga
Subject: Re: In the cause of Science .....
Message-ID: <719@ecsvax.UUCP>
Date: Fri, 8-Nov-85 12:10:28 EST
Article-I.D.: ecsvax.719
Posted: Fri Nov  8 12:10:28 1985
Date-Received: Wed, 13-Nov-85 07:40:16 EST
References: <663@ecsvax.UUCP> <589@minster.UUCP> <398@aum.UUCP>
Distribution: net
Organization: North Carolina Educational Computing Service
Lines: 23

> > >How fast is the Amiga ?. In the cause of Science I tried the Dhrystone
> > >benchmark published recently in net.sources. Running in CLI mode only
> > >and compiling with the current release of the Lattice compiler (no
> > >Enums) I found it executed 50000 Drystone loops in 110 secs. Thats
> > >approximately 450 Dhrystones/sec. 
> > 
> > Ok - so we ran it on an Atari 520ST ... 1092 Dhrystones/sec. This is,
> > of course, independent of graphic mode, but if you wave the mouse about
> > it slows down a bit.
> > 
I should point out that the original 450 on the amiga was using
the regular Lattice Compiler which uses 64 bit floating point
arithemetic I believe. If I get time I will try it using the
32 bit routines in the Rom kernel. However these comparisons
should be taken with a pinch of salt as it is compiler dependant -
for all we know the Atari number could be for 16 bit integers.

Of course, waving the mouse round on the Amiga makes no difference,
you can run the disk drive, and the sound and have sprites going
without the 68000 losing any of it's bus bandwidth.


Mike Gingell  ...decvax!mcnc!ecsvax!mjg