[Numpy-discussion] Video meeting this week

Nathaniel Smith njs at pobox.com
Fri Jul 10 12:31:42 EDT 2015


On Jul 10, 2015 10:51 AM, "Olivier Grisel" <olivier.grisel at ensta.org> wrote:
>
> I narrowed down the segfault from the scipy tests on my machine to:
>
> OPENBLAS_CORETYPE='Barcelona' /c/Python34_x64/python -c"import numpy
> as np; print(np.linalg.svd(np.ones((129, 129), dtype=np.float64))"
>
> Barcelona is the architecture detected by OpenBLAS. If I force Nehalem
> or if I reduce the matrix to shape (128, 128), it no longer segfaults.
> To debug it further I think I have to write a test program in C that
> uses the sgesdd function of the libopenblaspy.dll or against the
> official libopenblas.dll. Setting the dev environment under windows is
> painful though.

I assume you've already checked that this is a Windows specific issue?

-n
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