[SciPy-Dev] scipy 0.9.0 scipy.test fails with segmentation fault

Baker D.J. D.J.Baker@soton.ac...
Wed Sep 21 06:34:40 CDT 2011


Hello Paul,

Thanks for the reply. I agree that I should take a look the BLAS library. I've only found one reference to this type of failure on the web, and it regards the use of Enthought Python....

http://comments.gmane.org/gmane.comp.python.epd.user/309

This posting discusses a segmentation fault in the same routine, however with reference to the use of the MKL library. Something about the alignment of Fortran arrays being different in MKL.

Best regards -- David.

-----Original Message-----
From: scipy-dev-bounces@scipy.org [mailto:scipy-dev-bounces@scipy.org] On Behalf Of Pauli Virtanen
Sent: Wednesday, September 21, 2011 12:18 PM
To: scipy-dev@scipy.org
Subject: Re: [SciPy-Dev] scipy 0.9.0 scipy.test fails with segmentation fault

Wed, 21 Sep 2011 11:50:53 +0100, Baker D.J. wrote:
[clip]
> test_nonlin.TestJacobianDotSolve.test_broyden1 ... Segmentation fault
[clip]

That test contains only pure-Python code, with some calls to BLAS.
Nobody has seen a crash at that point before, as far as I know.

I would try linking against the reference blas from netlib.org/blas, to check whether the BLAS libraries provided by RHEL are at fault.

--
Pauli Virtanen

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