On 10/20/2010 04:39 PM, David wrote:
On 10/20/2010 04:23 PM, Gael Varoquaux wrote:
I am really sorry to be landing on the mailing list with Atlas build issues. I usually manage be myself to build Atlas, but this time I have been fighting for a couple of days with little success.
The reason I need to build Atlas is that our work computers are stuck on Mandriva 2008.0, in which the version of Atlas packaged by the system is not usable.
Anyhow, I lost quite a while with Atlas 3.9.26, for which I was never able to build libaries that could be used in a '.so' (seemed that the -fPIC was not working, but really I don't understand what was going on in the maze of makefiles). After that I switched to 3.9;25, which I have already have gotten working on another system (Mandriva 2008, but 32 bits). Know everything builds, but I get a missing symbol at the import:
from numpy.linalg import lapack_lite ImportError: /volatile/varoquau/dev/numpy/numpy/linalg/lapack_lite.so: undefined symbol: zgesdd_
The two first things to check in those cases (atlas or not):
- ldd /volatile/varoquau/dev/numpy/numpy/linalg/lapack_lite.so: does it load the libraries you think are you loading ? - nm atlas_libraries | grep zgesdd_ for every library in atlas (I don't know how the recent ones work, but this function should normally be in libf77blas.so)
Sorry, it should be in lapack, not the f77 blas wrapper, David