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From: aburto@marlin.UUCP
Newsgroups: comp.sys.amiga
Subject: Re: Amiga Dhrystones...
Message-ID: <939@marlin.UUCP>
Date: Fri, 20-Feb-87 18:26:19 EST
Article-I.D.: marlin.939
Posted: Fri Feb 20 18:26:19 1987
Date-Received: Sat, 21-Feb-87 16:36:20 EST
References: <1365@navajo.STANFORD.EDU> <936@marlin.UUCP>
Reply-To: aburto@marlin.nosc.mil.UUCP (Alfred A. Aburto)
Distribution: world
Organization: Naval Ocean Systems Center, San Diego
Lines: 43

Keywords:Dhrystone,Turbo-Amiga,Amiga

In article <936@marlin.UUCP> aburto@marlin.nosc.mil.UUCP (Alfred A. Aburto) writes:
>In article <1365@navajo.STANFORD.EDU> ali@navajo.ARPA (Ali Ozer) writes:
>>---
>>I sent the above results to the dhrystone people. It would be nice
>>if someone out there with a Turbo Amiga (like the people who did the
>>Savage floating point stuff?) tried the dhrystones out and also sent in
>>the results.
>>
>>Ali Ozer, ali@navajo.stanford.edu
____________________________________________________________________________

	I ran the Dhrystone Program last night on the Amiga and Turbo-Amiga
using Lattice C V3.03.  I just used the 'makesimple' file in the C-DEVEL
disk so I only obtained results for the NOREG case.  I got a compile time
warning of 'No Reference to CharLoc at line 376'.  Otherwise the program
compiled and linked Ok.  Anyway here are the results plus some others from
the Dhrystone Listing:

Atari 520ST, TOS ,  8.00MHz, Lattice C V3.03                   ,  446 /  450
Amiga      , V1.2,  7.16MHz, Lattice C V3.03                   ,  458 /  ---
Turbo-Amiga, V1.2,  7.16MHz, Lattice C V3.03 (020/16-bit mem)  ,  574 /  ---
Amiga      , V1.2,  7.16MHz, Manx Aztec C V3.30E               ,  888 /  945
Atari 520ST, TOS ,  8.00MHz, Megamax C V1.0                    , 1063 / 1136
Turbo-Amiga, V1.2,  7.16MHz, Manx C V3.30E   (020/16-bit mem)  , ???? / ????
Turbo-Amiga, V1.2, 14.32MHz, Lattice C V3.03 (020/32-bit mem)  , 1585 /  ---
Turbo-Amiga, V1.2, 14.32MHz, Manx C V3.30E   (020/32-bit mem)  , ???? / ????

Well the results seem to be telling me that I ought to be using
Manx Aztec C with the Amiga instead of Lattice C.  Manx Aztec C V3.30E appears
to be somewhat more than a factor of 2 more efficient in running the
Dhrystone than Lattice C V3.03!  I didn't run Manx Aztec C V3.30E with the
Turbo-Amiga but it looks like its going to do a pretty darn good job!  

It looks like the Dhrystone is more useful as an indicator of software
performance than system performance or hardware performance. Apparently
software performance is too great of an unknown variable and the Dhrystone
should not be used (except with great caution) to compare computer system
or hardware performance.

I hope someone with Manx Aztec C and a Turbo-Amiga can run the Dhrystone
too ( Jere Marrs ? ).  

Al Aburto