From help-octave-request at bevo dot che dot wisc dot edu  Tue Jun 19 14:03:07 2001
Subject: Re: How to speed up Octave
From: "Dmitri A. Sergatskov" <dima at coffee dot phys dot unm dot edu>
To: "Laubach, Mark (Nicolelis Lab)" <laubach at neuro dot duke dot edu>
cc: <help-octave at bevo dot che dot wisc dot edu>
Date: Tue, 19 Jun 2001 13:12:04 -0600 (MDT)

On Tue, 19 Jun 2001, Laubach, Mark (Nicolelis Lab) wrote:

> (version 6) under Windows.  I was disappointed to see how slow Octave is
> compared to Matlab on my home PC (Athlon 700 MHz with 256 MB SDRAM).  (I
> obtained a similar pattern of results on my (slower) notebook.)  Can someone
> please suggest how I might improve execution speeds for Octave, especially
> under Linux?

Matlab 6 now uses ATLAS. Did you compile ATLAS for octave?
I still would expect factor of 2 difference for non-ATLAS/LAPACK
related stuff...

> Also, I've noticed that Octave is slightly faster the second time a given
> piece of code is run.  Can someone explain why this is?

It uses pre-allocated memory?

> Best regards,
>
> Mark Laubach
>

Sincerely,

Dmitri.




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