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From: CTips <ctips@bestweb.net>
Newsgroups: comp.lang.ada,comp.realtime,comp.software-eng
Subject: Re: Teaching new tricks to an old dog (C++ -->Ada)
Date: Wed, 09 Mar 2005 10:39:32 -0500
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 comp.software-eng:4691
Date: 2005-03-09T10:39:32-05:00
List-Id: <comp.lang.ada>

Martin Dowie wrote:
> CTips wrote:
> 
>> Actually, I can verify that: if I look at the computer shootout 
>> http://shootout.alioth.debian.org/great/, I find that gcc C beats gnat 
>> Ada pretty much across the board; actually, Ada's performance sucks 
>> pretty much across the board. One of gcc C or Intel C is generally 
>> among the top few programs, while with a couple of exceptions, Gnat 
>> Ada is around the middle. In matrix multiply it gets beaten by LISP, 
>> Java, and Python!!! (How can you get beaten by Python? The mind boggles!)
> 
> 
> It's very easy when you don't switch on _any_ optimizations! :-)
> 
> GNAT is being compiled with the equivalent of "-O0" and GCC C is getting 
> "-O3".
> 
> NB: Ada2005 will be faster still now that copy-on-function-return isn't 
> going to be necessary.
> 
> Cheers
> 
> -- Martin
Any chance you could post the numbers with -O3 equivalent on some 
compiler(s)? All the codes are available on that site.

Thanks!