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Re: Octave 3.6.0 on Windows XP plot fails.
From: |
Martin Helm |
Subject: |
Re: Octave 3.6.0 on Windows XP plot fails. |
Date: |
Wed, 29 Feb 2012 17:30:57 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:10.0.2) Gecko/20120215 Thunderbird/10.0.2 |
Am 29.02.2012 16:45, schrieb Michael Goffioul:
> Does you simple example refers to the "rand" statement? If not, could
> you try with a matrix multiplication like the following: n=2000;
> A=randn(n); B=randn(n);tic; C=A*B; t=toc, MFLOPS=2*n^3/t*1e-6 Michael.
It refered to the a*a of a random matrix.
Here with your example (my PC, octave self compiled, atlas self
compiled, openSUSE 64 bit)
LD_PRELOAD=/usr/lib64/atlas/libsatlas.so.3 octave -qf --eval "n=2000;
A=randn(n); B=randn(n);tic; C=A*B; t=toc, MFLOPS=2*n^3/t*1e-6"
t = 1.3142
MFLOPS = 1.2174e+04
LD_PRELOAD=/usr/lib64/atlas/libtatlas.so.3 octave -qf --eval "n=2000;
A=randn(n); B=randn(n);tic; C=A*B; t=toc, MFLOPS=2*n^3/t*1e-6"
t = 0.42290
MFLOPS = 3.7834e+04
on quad core (factor 3.11)
and on the very slow atom on my netbook (octave 3.6.1 from repository,
self compiled atlas, openSUSE 64 bit)
LD_PRELOAD=/usr/lib64/atlas/libsatlas.so.3 octave -qf --eval "n=2000;
A=randn(n); B=randn(n);tic; C=A*B; t=toc, MFLOPS=2*n^3/t*1e-6"
t = 19.305
MFLOPS = 828.82
LD_PRELOAD=/usr/lib64/atlas/libtatlas.so.3 octave -qf --eval "n=2000;
A=randn(n); B=randn(n);tic; C=A*B; t=toc, MFLOPS=2*n^3/t*1e-6"
t = 8.2825
MFLOPS = 1931.8
dual core with HT (factor 2.33)
I have a dual boot with windows 7 on the netbook and will install the
newest octave tonight and compare the numbers with the same hardware for
the windows version of octave.
- Re: Octave 3.6.0 on Windows XP plot fails., (continued)
- Re: Octave 3.6.0 on Windows XP plot fails., maiky76, 2012/02/29
- Re: Octave 3.6.0 on Windows XP plot fails., nitnit, 2012/02/29
- Re: Octave 3.6.0 on Windows XP plot fails., maiky76, 2012/02/29
- Re: Octave 3.6.0 on Windows XP plot fails., Xianyi Zhang, 2012/02/29
- Re: Octave 3.6.0 on Windows XP plot fails., Martin Helm, 2012/02/29
- Re: Octave 3.6.0 on Windows XP plot fails., Michael Goffioul, 2012/02/29
- Re: Octave 3.6.0 on Windows XP plot fails., Martin Helm, 2012/02/29
- Re: Octave 3.6.0 on Windows XP plot fails., Michael Goffioul, 2012/02/29
- Re: Octave 3.6.0 on Windows XP plot fails., Martin Helm, 2012/02/29
- Re: Octave 3.6.0 on Windows XP plot fails., Michael Goffioul, 2012/02/29
- Re: Octave 3.6.0 on Windows XP plot fails.,
Martin Helm <=
- Re: Octave 3.6.0 on Windows XP plot fails., Martin Helm, 2012/02/29
- Re: Octave 3.6.0 on Windows XP plot fails., José Luis García Pallero, 2012/02/29
- Re: Octave 3.6.0 on Windows XP plot fails., Przemek Klosowski, 2012/02/29
Re: Octave 3.6.0 on Windows XP plot fails., Tatsuro MATSUOKA, 2012/02/15