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Benchmark on Linux


From: Laurent Mazet
Subject: Benchmark on Linux
Date: Fri, 25 Apr 1997 11:49:09 +0200 (MET DST)


I've done many benchmark on diffrent PC's (486, 586 and 686). It seems that
the g77 compilator is less efficient the f2c translator. I don't no what's
happend on other Unix. Moreover, gcc optinisations aren't futile (I've test
a binary distribtion compiled for Pentium on a PPro and an other compiled
specialy for PPro). I've mirrored octave sources and some binary distribtions
for Linux on my ftp server (beijing.univ-mlv.fr). If it can help someone...

            Laurent


********************************
benchmark on a PC i486 133MH 24M
Compiled with:
 gcc 2.7.2
 f2c

Speed of octave 2.0.5 on i486-pc-linux-gnu relative to Sun Sparc 10/40
Matrix inversion (LAPACK)         0.68 +/- 0.7% (7 runs)
Schur decomposition (LAPACK)      0.78 +/- 4.7% (9 runs)
Differential equation (LSODE)     1.91 +/- 3.7% (14 runs)
Fourier transforms (FFTPACK)      0.67 +/- 3.5% (7 runs)
for loop                          2.11 +/- 1.4% (28 runs)
-- Performance index (bm 1.10): 1.1


********************************
benchmark on a PC i586 133MH 16M
Compiled with:
 gcc 2.7.2
 f2c

Speed of octave 2.0.5 on i586-pc-linux-gnu relative to Sun Sparc 10/40
Matrix inversion (LAPACK)         1.47 +/- 0.3% (21 runs)
Schur decomposition (LAPACK)      1.18 +/- 1.3% (7 runs)
Differential equation (LSODE)     1.79 +/- 0.6% (14 runs)
Fourier transforms (FFTPACK)      1.19 +/- 0.7% (14 runs)
for loop                          1.56 +/- 1.4% (21 runs)
-- Performance index (bm 1.10): 1.4

********************************
benchmark on a PC i586 166MH 48M
Compiled with:
 gcc 2.7.2
 f2c

Speed of octave 2.0.5 on i586-pc-linux-gnu relative to Sun Sparc 10/40
Matrix inversion (LAPACK)         2.33 +/- 1.3% (28 runs)
Schur decomposition (LAPACK)      2.09 +/- 0.8% (7 runs)
Differential equation (LSODE)     3.46 +/- 1.5% (21 runs)
Fourier transforms (FFTPACK)      1.80 +/- 0.3% (21 runs)
for loop                          3.10 +/- 2.5% (42 runs)
-- Performance index (bm 1.10): 2.5

********************************
benchmark on a PC i586 166MH 48M
Compiled with:
 gcc 2.7.2.f.1
 g77

Speed of octave 2.0.5 on i586-pc-linux-gnu relative to Sun Sparc 10/40
Matrix inversion (LAPACK)         1.39 +/- 5.5% (60 runs)
Schur decomposition (LAPACK)      0.99 +/- 2.1% (7 runs)
Differential equation (LSODE)     3.47 +/- 3.3% (21 runs)
Fourier transforms (FFTPACK)      0.72 +/- 4.3% (7 runs)
for loop                          3.10 +/- 5.2% (120 runs)
-- Performance index (bm 1.10): 1.6

********************************
benchmark on a PC i686 200MH 64M
Compiled with:
 gcc 2.7.2
 f2c

Speed of octave 2.0.5 on i586-pc-linux-gnu relative to Sun Sparc 10/40
Matrix inversion (LAPACK)         3.15 +/- 1.5% (42 runs)
Schur decomposition (LAPACK)      2.48 +/- 5.7% (20 runs)
Differential equation (LSODE)     6.81 +/- 4.1% (49 runs)
Fourier transforms (FFTPACK)      3.91 +/- 0.6% (35 runs)
for loop                          6.38 +/- 1.2% (84 runs)
-- Performance index (bm 1.10): 4.2

********************************
benchmark on a PC i686 200MH 64M
Compiled with:
 gcc 2.7.2
 f2c

Speed of octave 2.0.5 on i686-pc-linux-gnu relative to Sun Sparc 10/40
Matrix inversion (LAPACK)         4.99 +/- 1.2% (63 runs)
Schur decomposition (LAPACK)      5.05 +/- 3.5% (14 runs)
Differential equation (LSODE)     6.90 +/- 1.3% (49 runs)
Fourier transforms (FFTPACK)      3.74 +/- 0.2% (42 runs)
for loop                          6.06 +/- 1.5% (84 runs)
-- Performance index (bm 1.10): 5.2

-- 
Laurent Mazet                                   PhD student in signal processing
University of Marne la Vallee                          and digital communication
FRANCE

E-mail: address@hidden                             W-Tel: (33) 01.64.73.72.90


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