On Sun 08 Jul, 22:35 -0400, Sandro Tosi <sandro.t...@gmail.com> wrote:
The Python versions supported by this release are 2.7, 3.4-3.6. The wheels are
linked with
OpenBLAS 3.0, which should fix some of the linalg problems reported for NumPy
1.14,
and the source archives were created using Cython 0.28.2 and should work with
the upcoming
Python 3.7.
just checking: in Debian we're currently linking against
libblas/liblapack (as available from http://www.netlib.org/lapack/) -
should we start investigating switching to OpenBLAS?
Well, as far as I can tell numpy in Debian is built using the /etc/alternatives
method, i.e. you can choose which BLAS implementation to use at run time if
more then one implementation is installed. In my case, it links to openblas
already:
"""
$ ldd
/usr/lib/python3/dist-packages/numpy/core/multiarray.cpython-36m-x86_64-linux-gnu.so
linux-vdso.so.1 (0x00007ffe3bf7b000)
libblas.so.3 => /usr/lib/x86_64-linux-gnu/libblas.so.3
(0x00007f23df471000)
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f23debaa000)
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0
(0x00007f23de98c000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f23de5d2000)
/lib64/ld-linux-x86-64.so.2 (0x00007f23df2e9000)
libopenblas.so.0 => /usr/lib/x86_64-linux-gnu/libopenblas.so.0
(0x00007f23dc35f000)
libgfortran.so.4 => /usr/lib/x86_64-linux-gnu/libgfortran.so.4
(0x00007f23dbf8b000)
libquadmath.so.0 => /usr/lib/x86_64-linux-gnu/libquadmath.so.0
(0x00007f23dbd4b000)
libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f23dbb2d000)
libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f23db915000)
$ ls -l /usr/lib/x86_64-linux-gnu/libblas.so.3
lrwxrwxrwx 1 root root 47 Sep 11 2017 /usr/lib/x86_64-linux-gnu/libblas.so.3
-> /etc/alternatives/libblas.so.3-x86_64-linux-gnu
$ ls -l /etc/alternatives/libblas.so.3-x86_64-linux-gnu
lrwxrwxrwx 1 root root 47 Sep 11 2017
/etc/alternatives/libblas.so.3-x86_64-linux-gnu ->
/usr/lib/x86_64-linux-gnu/openblas/libblas.so.3
$ update-alternatives --display libblas.so.3-x86_64-linux-gnu
libblas.so.3-x86_64-linux-gnu - auto mode
link best version is /usr/lib/x86_64-linux-gnu/openblas/libblas.so.3
link currently points to /usr/lib/x86_64-linux-gnu/openblas/libblas.so.3
link libblas.so.3-x86_64-linux-gnu is /usr/lib/x86_64-linux-gnu/libblas.so.3
/usr/lib/x86_64-linux-gnu/atlas/libblas.so.3 - priority 35
/usr/lib/x86_64-linux-gnu/blas/libblas.so.3 - priority 10
/usr/lib/x86_64-linux-gnu/openblas/libblas.so.3 - priority 40
"""
So, it seems to me there's no problem to solve in Debian?
Ciao!
Tiziano
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