Re: Benchmark test of Octave on Windows.

[David Bateman]

Ole Jacob Hagen wrote:

> Here is the timings on Octave-2.1.64 linked with ATLAS, but built with
> gcc-3.2.3 on Cygwin.
>
>   Octave Benchmark 2
>   ==================
> Number of times each test is run__________________________: 3
>
>   I. Matrix calculation
>   ---------------------
> Creation, transp., deformation of a 1500x1500 matrix (sec): 1.039
> 800x800 normal distributed random matrix ^1000______ (sec): 0.264


You don't have the randn function from octave-forge installed for the 
MINGW build, which was much slower here

> Sorting of 2,000,000 random values__________________ (sec): 1.204
> 700x700 cross-product matrix (b = a' * a)___________ (sec): 0.2917
> Linear regression over a 600x600 matrix (c = a \ b') (sec): 0.165
>                  ------------------------------------------------------
>                Trimmed geom. mean (2 extremes eliminated): 0.4309
>
>   II. Matrix functions
>   --------------------
> FFT over 800,000 random values______________________ (sec): 0.857
> Eigenvalues of a 320x320 random matrix______________ (sec): 0.5477
> Determinant of a 650x650 random matrix______________ (sec): 0.198
> Cholesky decomposition of a 900x900 matrix__________ (sec): 0.18
> Inverse of a 400x400 random matrix__________________ (sec): 0.1207
>                  ------------------------------------------------------
>                Trimmed geom. mean (2 extremes eliminated): 0.2692
Spot-on the same, no surprise..

>   III. Programmation
>   ------------------
> 750,000 Fibonacci numbers calculation (vector calc)_ (sec): 0.7607


This one was much slower. If I remember correctly this uses lots of 
memory, so you might need to run the script two or more time to get a 
reasonable time for this test

> Creation of a 2250x2250 Hilbert matrix (matrix calc) (sec): 0.8133
> Grand common divisors of 70,000 pairs (recursion)___ (sec): 0.367
> Creation of a 220x220 Toeplitz matrix (loops)_______ (sec): 0.93
> Escoufier's method on a 37x37 matrix (mixed)________ (sec): 1.399

This aren't as bad as they could be for the MINGW built... All in all 
pretty good..

Cheers
David


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