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Re: Octave 3.6.0 on Windows XP plot fails.


From: nitnit
Subject: Re: Octave 3.6.0 on Windows XP plot fails.
Date: Tue, 28 Feb 2012 23:39:20 -0800 (PST)

maiky76 wrote
> 
> Hi,
> 
> 
> With Nitzan binaries I got:
> n=2000; A=randn(n); B=randn(n);tic; C=A*B; t=toc, MFLOPS=2*n^3/t*1e-6
> t =  0.87709
> MFLOPS = 1.8242e+004
> 
> Happy camper? I am...
> M
> 

In my latest binaries, the default libblas.dll is an openblas built for
maximum 2 threads and with dynamic-architecture (cpu architecture is
detected upon initialization and respective logic is selected).

If your cpu has 4 cores, you can try switching to a similar openblas
(dynamic-architecture) built for maximum 4 threads. It may almost double the
performance.

See Octave3.6.1_gcc4.6.2_libblas_readme.txt inside the 7z archive and use
the respective dll file (c.)

Nitzan


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