[Numpy-discussion] ATLAS,LAPACK compilation - help!

[Charles R Harris]

On 5/31/07, David Cournapeau <david at ar.media.kyoto-u.ac.jp> wrote:
>
> Robert Kern wrote:
> > sittner at lkb.ens.fr wrote:
> >> Hello there,
> >> I'm new here, so excuse me if the solution is trivial:
> >> i have installed ATLAS and LAPACK on my ubuntu 7 dual core intel
> machine.
> >> now, when i try to install numpy, it tells me it doesn't find these
> >> libraries:
> >>
> >> "
> >> $ python setup.py install
> >> Running from numpy source directory.
> >> F2PY Version 2_3816
> >> blas_opt_info:
> >> blas_mkl_info:
> >>   libraries mkl,vml,guide not found in /usr/local/lib
> >>   libraries mkl,vml,guide not found in /usr/lib
> >>   NOT AVAILABLE
> >>
> >> atlas_blas_threads_info:
> >> Setting PTATLAS=ATLAS
> >>   libraries lapack,blas not found in /usr/local/lib/ATLAS/src/
> >>   libraries lapack,blas not found in /usr/local/lib/ATLAS
> >>   libraries lapack,blas not found in /usr/local/lib
> >>   libraries lapack,blas not found in /usr/lib
> >>   NOT AVAILABLE
> >>
> >> atlas_blas_info:
> >>   libraries lapack,blas not found in /usr/local/lib/ATLAS/src/
> >>   libraries lapack,blas not found in /usr/local/lib/ATLAS
> >>   libraries lapack,blas not found in /usr/local/lib
> >>   libraries lapack,blas not found in /usr/lib
> >>   NOT AVAILABLE
> >> ......"
> >> I have installed ATLAS and lapack with no errors.
> >> ATLAS is in usr/local/lib/ATLAS/:
> >> $ ls /usr/local/lib/ATLAS
> >> bin       doc          interfaces  Make.Linux_UNKNOWNSSE2_2
>   README  tune
> >> CONFIG    include      lib         makes                     src
> >> config.c  INSTALL.txt  Makefile    Make.top                  tst.o
> >>
> >> so, what seems to be the problem?
> >
> > You haven't actually installed ATLAS. You've just built it. Don't put
> the source
> > in /usr/local/lib/ATLAS/. Put that somewhere else, like ~/src/ATLAS/.
> Follow the
> > installation instructions in INSTALL.txt. Note this section:
> >
> > """
> > There are two mandatory steps to ATLAS installation (config & build), as
> > well as three optional steps (test, time, install) and these steps are
> > described in detail below.  For the impatient, here is the basic
> outline:
> > **************************************************
> >    mkdir my_build_dir ; cd my_build_dir
> >    /path/to/ATLAS/configure [flags]
> >    make              ! tune and compile library
> >    make check        ! perform sanity tests
> >    make ptcheck      ! checks of threaded code for multiprocessor
> systems
> >    make time         ! provide performance summary as % of clock rate
> >    make install      ! Copy library and include files to other
> directories
> > **************************************************
> > """
> >
> Alternatively, if you are not familiar with compiling softwares (and
> Atlas can be tricky to compile/install), just install the packages
> provided by ubuntu: sudo apt-get install atlas3-sse2-dev
> atlas3-base-dev, and it should be fine.


Maybe, maybe not. On 64bit Intel machines running 64bit linux the fedora
package raises an illegal instruction error. Since the fedora package is
based on the debian package this might be a problem on Ubuntu also. For
recent hardware you are probably better off compiling your own from the
latest ATLAS version out there.

Chuck
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