[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: speed of octave
From: |
John W. Eaton |
Subject: |
Re: speed of octave |
Date: |
Fri, 07 Sep 2007 14:20:56 -0400 |
On 7-Sep-2007, Don Roberts wrote:
| I also ran into an order of magnitude speed difference between
| Matlab and Octave on a section of >vectorized< (Matlab-style rather
| than for-loop style code), but don't think it speaks badly of
| Octave. The issue does appear to be Matlab's just-in-time
| >compiler<. It's been several months and I don't have the exact
| code handy, but it was an element-wise comparison of two vectors
| followed by a reduction. Unfortunately, it's not an
| apples-to-apples comparison. Matlab (7.04) was running under XP on
| a 2.x GHz Pentium and Octave (2.1.73) under Linux under a 2.4 GHz
| PowerPC. Re-writing the function as linked-in C gave negligible
| speed-up for Matlab, but the expected 10X speed-up for Octave.
If you were able to do this, then how about contributing the code so
everyone can benefit from the improvement?
jwe
- speed of octave, frank wang, 2007/09/06
- Re: speed of octave, Søren Hauberg, 2007/09/06
- Re: speed of octave, Jim Langston, 2007/09/06
- Re: speed of octave, Don Roberts, 2007/09/07
- Re: speed of octave,
John W. Eaton <=
- Re: speed of octave, frank wang, 2007/09/11
- Re: speed of octave, John W. Eaton, 2007/09/11
- Re: speed of octave, Riccardo Corradini, 2007/09/12
- Re: speed of octave, Eric S. Carlson, 2007/09/13
- Re: speed of octave, John W. Eaton, 2007/09/13
- RE: speed of octave, Eric Carlson, 2007/09/13
- Re: speed of octave, Thomas Geiger, 2007/09/13
- Re: speed of octave, Quentin Spencer, 2007/09/13
- Re: speed of octave, Jordi Gutiérrez Hermoso, 2007/09/13
- Re: speed of octave, Thomas Geiger, 2007/09/13