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Re: octave-speed
From: |
Paul Kienzle |
Subject: |
Re: octave-speed |
Date: |
Fri, 4 Feb 2005 21:45:50 -0500 |
Performance for vector operations is on par with matlab. Performance
for loops takes a 10x hit.
You can develop the algorithm in Octave and code the bits that require
loops in C++.
Look through the list archives for links to work on an octave compiler.
- Paul
On Feb 4, 2005, at 9:34 AM, Rafael RodrÃguez Velilla wrote:
Hello all,
I'm new to octave and I'm planning to use it to simulate DSP
algorithms.
Speed is a matter of concern in my simulations. I have made a stupid
test to compare octave's performance with Matlab's performance:
m=1:100000;
n=8;
for i=1:99999
n=sqrt(sqrt(m(i)*m(i+1))*n);
endfor
n
In the same computer it takes 10 seconds to run under linux-octave but
less than a second under Matlab.
I have compiled octave 2.1.64 with shared libraries with gcc3.2...
... is there a way to improve its performance?
For example by compiling it with CPPFLAGS=-march=i686???
I have read that maybe using ATLAS improves the performance.
Any hints on how to compile it to run faster?
-------------------------------------------------------------
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
-------------------------------------------------------------
-------------------------------------------------------------
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
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