polyfit uses 100% CPU and does not stop (Windows XP, Python 2.5.1 NumPy 1.0.4) (Trac #628)

[numpy-gitbot]

Original ticket http://projects.scipy.org/numpy/ticket/628 on 2007-12-09 by trac user behrisch, assigned to @cournape.

The attached code shows the very same behavior as #1225, although I can confirm that it works with numpy 1.0.3 on the same machine with te same Python distribution. I used the binary packages from the sourceforge download site together with Python 2.5.1. I did not install any LAPACK or BLAS packages.

Furthermore it works on openSUSE 10.3 with numpy 1.0.4, libblas3-3.1.1-29, liblapack3-3.1.1-29 (which may be another hint, that it is no duplicate of #1225)

[numpy-gitbot]

Attachment added by trac user behrisch on 2007-12-09: testPolyfit.py

[numpy-gitbot]

@cournape wrote on 2007-12-10

Could you try with the version I posted on #1225 ?

http://www.ar.media.kyoto-u.ac.jp/members/david/archives/numpy-1.0.4.win32-py2.5.msi

[numpy-gitbot]

trac user behrisch wrote on 2007-12-10

This one works.

[numpy-gitbot]

trac user maffoo wrote on 2007-12-12

I can confirm this bug, and that the version posted on #1225 fixed it.

[numpy-gitbot]

@cournape wrote on 2008-03-21

We know the problem (bad blas/lapack), and I added the test to the regression suite (r4901), so that we can quickly detect the problem if this happens again.