Perhaps this is a too recurrent subject, but I"m having problems when making numarray to use ATLAS instead of the mini-lapack included.

I had to change lapack_libs and lapack_dirs in addons.py to read: lapack_libs = ['lapack', 'f77blas', 'f2c', 'cblas', 'atlas', 'm'] lapack_dirs = ['/usr/local/lib/ATLAS'] I have all my .a files in /usr/local/lib/ATLAS so I can control which ones I'm actually linking against. mosel ~ % ls -l /usr/local/lib/ATLAS total 14608 -rw-r--r-- 1 root staff 7952316 Oct 20 10:03 libatlas.a -rw-r--r-- 1 root staff 277592 Oct 20 10:03 libcblas.a -rw-r--r-- 1 root staff 261060 Oct 20 10:45 libf2c.a -rw-r--r-- 1 root staff 353278 Oct 20 10:03 libf77blas.a -rw-r--r-- 1 root staff 5734736 Oct 20 10:42 liblapack.a -rw-r--r-- 1 root staff 324968 Oct 20 10:03 libtstatlas.a -Sebastian (and yes, I get a significant speed boost from ATLAS) -- Sebastian Stark -- http://www.kyb.tuebingen.mpg.de/~stark Max Planck Institute for Biological Cybernetics Spemannstr. 38, 72076 Tuebingen Phone: +49 7071 601 555 -- Fax: +49 7071 601 552