Re: Benchmarking Octave 322

[Riccardo Corradini]

I also have better results with custom optimized libraries
Speed of octave 3.2.2 on x86_64-unknown-linux-gnu
  Pentium II 350 MHz has score 1.0, higher numbers are better
Matrix inversion (LAPACK)        34.47 +/- 21.0% (380 runs)
Schur decomposition (LAPACK)     29.56 +/- 1.3% (168 runs)
Differential equation (LSODE)    34.62 +/- 0.4% (819 runs)
Fourier transforms (FFTPACK)     13.09 +/- 0.2% (343 runs)
for loop                         54.78 +/- 0.6% (1008 runs)
-- Performance index (bm 2.3): 30

 cat /proc/cpuinfo
processor    : 0
vendor_id    : AuthenticAMD
cpu family    : 15
model        : 107
model name    : AMD Athlon(tm) 64 X2 Dual Core Processor 5600+

Bests
Riccardo
--- Ven 11/9/09, Dmitri A. Sergatskov <address@hidden> ha scritto:

Da: Dmitri A. Sergatskov <address@hidden>
Oggetto: Re: Benchmarking Octave 322
A: "Francesco Potorti`" <address@hidden>
Cc: address@hidden
Data: Venerdì 11 settembre 2009, 15:48

On Fri, Sep 11, 2009 at 6:48 AM, Francesco Potorti` <address@hidden> wrote:

> For a reference, here is what I see using my benchmark on an AMD Athlon
> 64 X2 3800+ running Debian's Octave 3.2.2:
>
> octave> benchmark
> Octave benchmark version bm 2.3
> Speed of octave 3.2.2 on x86_64-pc-linux-gnu
>  Pentium II 350 MHz has score 1.0, higher numbers are better
> Matrix inversion (LAPACK)         9.05 +/- 0.3% (154 runs)
> Schur decomposition (LAPACK)     23.88 +/- 0.2% (126 runs)
> Differential equation (LSODE)    22.83 +/- 0.3% (546 runs)
> Fourier transforms (FFTPACK)      7.43 +/- 0.5% (196 runs)
> for loop                         34.76 +/- 1.0% (658 runs)
> -- Performance index (bm 2.3): 17
>

It looks to me your ATLAS is not well optimized. Here is 3.2.2 on
Fedora 11 x86_64
(Opteron 180, at 2.4GHz):

Matrix inversion (LAPACK)        31.47 +/- 2.6% (539 runs)
Schur decomposition (LAPACK)     39.68 +/- 0.1% (238 runs)
Differential equation (LSODE)    26.19 +/- 0.6% (623 runs)
Fourier transforms (FFTPACK)      7.09 +/- 1.9% (168 runs)
for loop                         35.66 +/- 1.1% (665 runs)
-- Performance index (bm 2.3): 24


> --
> Francesco Potortì (ricercatore)        Voice: +39 050 315 3058 (op.2111)

Dmitri.
--

_______________________________________________
Help-octave mailing list
address@hidden
https://www-old.cae.wisc.edu/mailman/listinfo/help-octave