[Python-modules-team] Bug#464784: python-numpy: After transition to gfortran _dotblas.so is lost

otizonaizit at yahoo.com otizonaizit at yahoo.com
Fri Feb 22 15:09:31 UTC 2008

Package: python-numpy
Version: 1:1.0.4-6
Followup-For: Bug #464784

After transition to gfortran it appears that the matrix
multiplication function (numpy.dot) is now linked to the slow
version in numpy/core/multiarray.so instead of being linked to the
faster ATLAS version (in previous package version available under
numpy/core/_dotblas.so). Another side effect of the transition is
that ATLAS libraries are not found by
which makes it impossible to compile extension modules linking to
ATLAS and LAPACK with f2py. ld seems to be configured correctly,
here is my /etc/ld.so.conf:

include /etc/ld.so.conf.d/*.conf

and my /etc/ld.so.conf.d/atlas.conf:

let me know if you need further information to help in debugging!

keep up with the excellent work,


-- System Information:
Debian Release: lenny/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: i386 (i686)

Kernel: Linux 2.6.24-1-686 (SMP w/2 CPU cores)
Locale: LANG=en_US.ISO-8859-15, LC_CTYPE=en_US.ISO-8859-15 (charmap=ISO-8859-15)
Shell: /bin/sh linked to /bin/bash

Versions of packages python-numpy depends on:
ii  libatlas3gf-base [libla 3.6.0-21.3       Automatically Tuned Linear Algebra
ii  libatlas3gf-sse2 [libla 3.6.0-21.3       Automatically Tuned Linear Algebra
ii  libblas3gf [libblas.so. 1.2-1.5          Basic Linear Algebra Subroutines 3
ii  libc6                   2.7-8            GNU C Library: Shared libraries
ii  libgcc1                 1:4.3-20080219-1 GCC support library
ii  libgfortran3            4.3-20080219-1   Runtime library for GNU Fortran ap
ii  liblapack3gf [liblapack 3.1.1-0.4        library of linear algebra routines
ii  python                  2.4.4-6          An interactive high-level object-o
ii  python-central          0.5.15-0.1       register and build utility for Pyt

python-numpy recommends no packages.

-- no debconf information

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