[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: x86 vs x86_64
From: |
Andy Adler |
Subject: |
Re: x86 vs x86_64 |
Date: |
Mon, 9 Jan 2006 22:32:24 -0500 (EST) |
On Mon, 9 Jan 2006, Dmitri A. Sergatskov wrote:
> I have an Athlon64 computer which has both 32 and 64- bit of FedoraCore4
> distributions installed. I run some benchmarks, and while 64-bit
> usually outperform
> 32-bit by 5 to 15 % , the a^1000 benchmark runs more than 50% slower.
> E.g for 3000x3000 random matrix:
> 64-bit -- 2.133 seconds, 32-bit -- 1.309 seconds.
>
> Is there some obvious reason for that? Or we just assume that this is
> a quirk (due to an immaturity) of 64-bit compiler?
Could you give some more details on octave
- what version?
- does it use ATLAS?
- do you know what compiler?
--
Andy Adler <address@hidden> 1(613)562-5800x6218
-------------------------------------------------------------
Octave is freely available under the terms of the GNU GPL.
Octave's home on the web: http://www.octave.org
How to fund new projects: http://www.octave.org/funding.html
Subscription information: http://www.octave.org/archive.html
-------------------------------------------------------------
- x86 vs x86_64, Dmitri A. Sergatskov, 2006/01/09
- Re: x86 vs x86_64,
Andy Adler <=