Re: Octave 2.1.57 vecLib Panther 10.3.4

[Dmitri A. Sergatskov]

Fredrik Lingvall wrote:
> I recommend linking Octave with the GOTO BLAS libs instead of ATLAS.
> GOTO BLAS can be found at:
>
> http://www.cs.utexas.edu/users/flame/goto/
>
> It got a speedup with about a factor of 2 on matrix multiplictions on a 
> dual P4
> using Matlab compared to the Matlab libs (which I think is ATLAS). There
> is no G5 version available yet but I think it will be soon.

There is no Athlon library, nor a source code either.
As for factor of 2, lets see here:

address@hidden dima]$ /import/opt/matlab6/bin/matlab -nojvm

                              < M A T L A B >
                  Copyright 1984-2002 The MathWorks, Inc.
                      Version 6.5.0.180913a Release 13
                                Jun 18 2002

...

>> a=rand(2000);
>> b=rand(2000);
>> tic; c=a*b; toc

elapsed_time =

    9.9345

>> tic; c=a*b; toc

elapsed_time =

    9.9208

>>

address@hidden octave]$ octave
GNU Octave, version 2.1.57 (i686-pc-linux-gnu).
Copyright (C) 2004 John W. Eaton.

....

octave:1> a=rand(2000);
octave:2> b=rand(2000);
octave:3> tic; c=a*b; toc
ans = 5.3369
octave:4> tic; c=a*b; toc
ans = 5.2770

(Using atlas 3.7.3 custom compiled for 2xAthlon 2000GHz).


> Regards,
>
> Fredrik

Regards,

Dmitri.



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