[Numpy-discussion] performance matrix multiplication vs. matlab
Xue (Sue) Yang
x.yang at physics.usyd.edu.au
Tue Jan 5 22:38:29 EST 2010
I followed what I collected about installation of numpy with lapack and
atlas and installed numpy on our desktop with RHEL4 and 4 cores.
Linux curie.physics.usyd.edu.au 2.6.9-89.0.15.ELsmp #1 SMP Sat Oct 10
05:59:16 EDT 2009 i686 i686 i386 GNU/Linux
I successfully installed lapack-3.1.1, atlas3.8.0 with fortran comfiler:
gfortran, and numpy-1.3.0 with enthought-python distribution (python2.5).
>>a = numpy.random.randn(6000, 6000)
Surprisingly, it only uses 2 cores instead of 4 cores. Where and how should
I set up the number of threads for numpy?
Dr. Xue (Sue) Yang
School of Physics, University of Sydney
Ph: 02 9351 6081
Email: x.yang at physics.usyd.edu.au
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