On Thu, Sep 24, 2009 at 2:10 PM, Skipper Seabold <jsseabold@gmail.com> wrote:

On Thu, Sep 24, 2009 at 1:50 PM, Skipper Seabold <jsseabold@gmail.com> wrote:

...

For some reason I thought it would be a good idea to install a custom ATLAS...again.

I think I've built lapack 3.1.1 and atlas 3.8.0 correctly following the instructions here <http://www.scipy.org/Installing_SciPy/Linux> and the ones included with atlas, but we shall see...the checks pass at least.  I installed the atlas libraries to ~/atlas and copied over the dynamic libraries by hand.

I then edit my site.cfg

[DEFAULT] library_dirs = /usr/local/lib:/usr/lib:/home/skipper/atlas/lib include_dirs = /usr/local/include:/usr/include:usr/include/suitesparse:/home/skipper/atlas/include [blas_opt] libraries = ptf77blas, ptcblas, atlas [lapack_opt] libraries = lapack, ptf77blas, ptcblas, atlas [amd] amd_libs = amd [umfpack] umfpack_libs = umfpack [fftw] libraries = fftw3

I then build and install numpy without error.  But when I try to import numpy I get [...] /usr/local/lib/python2.6/dist-packages/numpy/linalg/linalg.py in <module>()     20         isfinite, size     21 from numpy.lib import triu ---> 22 from numpy.linalg import lapack_lite     23 from numpy.matrixlib.defmatrix import matrix_power     24

ImportError: /usr/local/lib/python2.6/dist-packages/numpy/linalg/lapack_lite.so: undefined symbol: ATL_dptsyrk

Running ldd gives

$ ldd /usr/local/lib/python2.6/dist-packages/numpy/linalg/lapack_lite.so        linux-vdso.so.1 =>  (0x00007fff129fe000)        liblapack.so => /usr/lib/atlas/liblapack.so (0x00007f4609c57000)        libatlas.so => /usr/lib/libatlas.so (0x00007f4609615000)        libgfortran.so.3 => /usr/lib/libgfortran.so.3 (0x00007f4609338000)        libm.so.6 => /lib/libm.so.6 (0x00007f46090b3000)        libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x00007f4608e9b000)        libc.so.6 => /lib/libc.so.6 (0x00007f4608b28000)        libblas.so.3gf => /usr/lib/atlas/libblas.so.3gf (0x00007f46084ad000)        /lib64/ld-linux-x86-64.so.2 (0x00007f460a991000)

I currently have atlas installed from David's repo as well (incidentally, David, where is your repo, I can't find it again, and wanted to add it to the wiki.) and am wondering if there is a conflict here.  When I look at the build log it says, for example,

 FOUND:    libraries = ['ptf77blas', 'ptcblas', 'atlas']    library_dirs = ['/home/skipper/atlas/lib']    language = c    include_dirs = ['/usr/include']

Should include_dirs be '/home/skipper/atlas/include' ?  I don't know. Any pointers would be appreciated, as I wasn't able to install numpy without trying to use the threaded libraries either now...  I can provide anymore output as needed.  Build log attached.

Cheers,

Skipper

I figured the include directories in site.cfg were greedy, so I changed the order to

library_dirs = /usr/local/lib:/usr/lib:/home/skipper/atlas/lib include_dirs = /home/skipper/atlas/include:/usr/local/include:/usr/include:/usr/include/suitesparse

but I get the same import error in numpy.

The correct include directory is listed in the build log, but I'm wondering why it says atlas 3.8.3 when I installed 3.8.0

New build log attached.

Skipper

I can't believe it, but I figured it out. I uninstalled the old atlas, then had to copy libatlas.so from the directory where I installed atlas to /usr/lib/ and everything went to plan. I now see all of my cores working when trying to invert a large matrix rather than one core getting overloaded and it taking forever. Sorry for the noise. Skipper