[Numpy-discussion] Numpy intermittent seg fault

[Jacopo Sabbatini]

Hi,

I'm experiencing random segmentation faults from numpy. I have generated a
core dumped and extracted a stack trace, the following:

#0  0x00007f3a8d921d5d in getenv () from /lib64/libc.so.6
#1  0x00007f3a843bde21 in blas_set_parameter () from
/opt/apps/sidescananalysis-9.7.1-42-gdd3e068+dev/lib/python2.7/site-packages/numpy/core/../../../../libopenblas.so.0
#2  0x00007f3a843bcd91 in blas_memory_alloc () from
/opt/apps/sidescananalysis-9.7.1-42-gdd3e068+dev/lib/python2.7/site-packages/numpy/core/../../../../libopenblas.so.0
#3  0x00007f3a843bd4e5 in blas_thread_server () from
/opt/apps/sidescananalysis-9.7.1-42-gdd3e068+dev/lib/python2.7/site-packages/numpy/core/../../../../libopenblas.so.0
#4  0x00007f3a8e09ff18 in start_thread () from /lib64/libpthread.so.0
#5  0x00007f3a8d9ceb2d in clone () from /lib64/libc.so.6

I have experience the segfault from several code paths but they all have
the same stack trace.

I use conda to run python and numpy. The dump of the packages version is:

conda                     3.18.9                   py27_0
geos                      3.3.3                         0
matplotlib                1.4.3                np19py27_2
networkx                  1.10                     py27_0
numpy                     1.9.2                    py27_2
openblas                  0.2.14                        3
pandas                    0.16.2               np19py27_0
python                    2.7.10                        2
scikit-image              0.11.3               np19py27_0
scipy                     0.15.1               np19py27_0
shapely                   1.5.7                    py27_0
system                    5.8                           1

Cheers,
Jacopo
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