Monday, 12 January 2009

Installing Scipy etc

Suse 10.3, beans. The rpms have been downloaded already.

Install gcc42-fortran from repository. (no help, exlude next time)
Install gcc-fortran from repository. (essential)
$ rpm -i bzr-1.6.1-0.pm.1.x86_64.rpm

libgfortran41 was essential. Oddly, libgfortran42 did not satisfy.
blas and libblas3 were installed (reported by yast). Removed them,
along with matplotlib, numpy, scipy (none of which worked).

# rpm -i refblas3-3.0-11.1.x86_64.rpm

now worked.

# rpm -i lapack3-3.0-19.1.x86_64.rpm

worked.

# rpm -i python-configobj-4.5.2-0.pm.1.x86_64.rpm
didn't work. there was a newer version already. left as was.

rpm -i python-numpy-1.0.4-4.1.x86_64.rpm
worked

rpm -i python-scipy-0.6.0-2.1.x86_64.rpm
worked

python-numeric was installed with yast

python-gtk and python-gtk-devel were installed with yast.

rpm -i python-matplotlib-0.91.2-0.pm.1.x86_64.rpm

worked.

import numpy, scipy still fails. A working numpy shows
>>> print numpy.__file__
'/usr/local/lib/python2.5/site-packages/numpy/__init__.pyc'

and that's not part of $PATH, nor $PYTHONPATH. How is Python
getting to it?

Suse is installing python packages to directories with 64 appended. Python's search path uses the non-64 version, so no installed packages
are found. The readline error maybe indicative of this.

The 64 bit paths can be added to PYTHONPATH, or directly added by
editing the site.py file. (http://docs.python.org/install/index.html).

I'll update PYTHONPATH, to include in particular, /usr/lib64/python

sys.path shows the search path. I copied it's contents into PYTHONPATH as defined in .bashrc, and changed the entries to 64 versions.

/usr/local/lib64 is empty and should be /usr/lib64/
In fact, removing /local/ from all the python paths including 64, fixed readline, numpy and scipy. Job done.

Summary:
Suse10.3 was installing to /usr/lib64/python/site-packages
but the default pythonpath (in sys.path) did not use this path. The
paths in sys.path were added to PYTHONPATH in .bashrc, and modified to use /usr/lib64/.

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