[Numpy-discussion] (apparent) infinite loop in LAPACK/ATLAS

[David Cournapeau]

On Wed, Nov 4, 2009 at 2:55 PM, David Warde-Farley <dwf at cs.toronto.edu> wrote:
> Hi all (mostly David C. since he probably knows all this horrible
> stuff),
>
> I noticed on my new laptop (with an Atom N280 in it) that when I run
> numpy.test() about the 34th test would loop, seemingly forever.
>
> Finding this a little odd, I tried an SVD on a small matrix and
> observed the same behaviour, narrowed it down with gdb to what seems
> to be an infinite loop involving dlamc1_ and dlamc3_,

Did you compile them without any optimized as suggested in the
makefiles ? NOOPT should not contain -O option

David