[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

2.9.4 speed

From: Shai Ayal
Subject: 2.9.4 speed
Date: Wed, 11 Jan 2006 16:05:35 +0200
User-agent: Thunderbird 1.5 (X11/20051025)

Hi all,

With all your help I was able to install 2.9.4, using Quentin's SRPMS for ufsparse and glpk and applying a patch to the makefile as detailed in a previous email to the list by Ismail.

I am testing it against 2.1.72. both versions were configured with the same options and use the same blas/atlas/fftw and compilers.

I have a some code which constructs a 201^2x201^2 sparse matrix and inverts it. While the inversion speed is comparable for both versions, The part which constructs the I,J,S vectors which I later turn into the sparse matrix by s=sparse(I,J,S) takes almost twice as much time in 2.9.4 (12 seconds compared to 6 seconds). This part has a lot of loops, vector concatenations etc...

Does this sound familiar to anyone, or should I investigate further?


Octave is freely available under the terms of the GNU GPL.

Octave's home on the web:
How to fund new projects:
Subscription information:

reply via email to

[Prev in Thread] Current Thread [Next in Thread]