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From: ali@navajo.UUCP
Newsgroups: comp.sys.amiga
Subject: Re: Amiga Dhrystones...
Message-ID: <1395@navajo.STANFORD.EDU>
Date: Fri, 20-Feb-87 00:59:23 EST
Article-I.D.: navajo.1395
Posted: Fri Feb 20 00:59:23 1987
Date-Received: Sat, 21-Feb-87 06:02:05 EST
References: <1365@navajo.STANFORD.EDU> <936@marlin.UUCP> <938@marlin.UUCP>
Reply-To: ali@navajo.UUCP (Ali Ozer)
Distribution: world
Organization: Stanford University
Lines: 28
Keywords: Lattice C, Dhrystone, Turbo-Amiga, Benchmark

In article <938@marlin.UUCP> Alfred A. Aburto writes:
>	The Atari 520ST Dhrystone results were interesting to me because
>they show that the software can really make a huge difference in the 
>performance of the system.  There is nearly a factor of 2.5 in the 
>performance of Lattice C V3.03 ( 450 Dhrystones/sec ) as compared to 
>Megamax C V1.0 ( 1136 Dhrystones/sec ).  

I think (from what I gather from the comments) one of the
purposes of the Dhrystone program is to benchmark the code generated
by the compiler as well as the machine itself. The Dhrystone results have
to be posted with the compiler that the code was generated by --- So you
can't just say "The Amiga benchmarks at 1000 dhrys/sec while this other
machine benchmarks at foo," without mentioning what compiler you used,
because, as you observed, the compiler plays a great role in the result.

>	Does anyone know if there are versions of the Dhrystone program
>for Modula-2 and Fortran?  
No, Dhrystones come only for C. (Actually, the version I have was apparently
translated from Ada... Hmmm.)

>	Al Aburto

Thanks for the effort in getting the results on a Turbo. By the way, do you
have a Manx compiler? If not, I can send you or post the executable (if
I figure out how...) for the Dhrystone program I used. (It already includes
the calls to DateStamp(), etc, for timing.) 

Ali