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From: sansom@trwrb.UUCP (Richard Sansom)
Newsgroups: comp.sys.atari.st
Subject: More ST Floating Point Performance
Message-ID: <1959@trwrb.UUCP>
Date: Wed, 10-Jun-87 01:32:09 EDT
Article-I.D.: trwrb.1959
Posted: Wed Jun 10 01:32:09 1987
Date-Received: Sat, 20-Jun-87 04:20:05 EDT
Reply-To: sansom@trwrb.UUCP (Richard Sansom)
Organization: TRW EDS, Redondo Beach, CA
Lines: 26

I asked Joe Knapp (ihnp4!asr2!jmk) to send me a copy of orbit.c so I could
compile and execute with MWC 2.0.  Well, he sent it, I compiled it, and got
results which produce the following updated performance chart:

	machine		compiler	run time (s)	accuracy
	===========	============	========	==========
	520ST		Lattice 3.03.01	480		very good
	6300+       	Microsoft 	192		excellent
    >>  520ST		MWC 2.0		180		excellent
	Amiga 1000	Manx  -lm	25		poor
	6300+/80287	Microsoft 	22		excellent
	VAX 11/785	Unix V cc	4		excellent

The good news is that the results were _exactly_ the same as those produced
by the VAX 11/785.  The bad news is that the ST is still much slower than it
should be (based on the Amiga's performance).

I'm gonna kick this thing around for a few more days and see if I can
determine just what is slowing the ST down soooooo much.

-Rich
-- 
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  /// Richard E. Sansom                   TRW Electronics & Defense Sector \\\
  \\\ {decvax,ucbvax,ihnp4}!trwrb!sansom  Redondo Beach, CA                ///
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