Bug#966175: libopenblas0-pthread: segfault in scipy tests: calls Haswell

[Sébastien Villemot]

Le vendredi 24 juillet 2020 à 19:00 +0800, Drew Parsons a écrit :
> On 2020-07-24 18:46, Sébastien Villemot wrote:
> > Haswell is 4th generation Intel core, while Whiskey Lake is 8th/9th
> > generation, hence much more recent. So Whiskey Lake is perfectly able
> > to run Haswell assembly code. The cause of the bug must lie somewhere
> > else.
> 
> OK.
> 
> BTW it does pass with selected values of OPENBLAS_CORETYPE (cf. 
> Bug#930482)
> 
> This does pass:
>    OPENBLAS_CORETYPE=core2 python3 -m pytest 
> /usr/lib/python3/dist-packages/scipy/cluster/tests/test_vq.py -k 
> "krandinit" -v

Thanks. So that might indicate that the problem lies in the Haswell
kernel (which is used on all Intel CPUs that have AVX2 but not AVX512,
which means most recent CPUs).

-- 
⢀⣴⠾⠻⢶⣦⠀  Sébastien Villemot
⣾⠁⢠⠒⠀⣿⡁  Debian Developer
⢿⡄⠘⠷⠚⠋⠀  https://sebastien.villemot.name
⠈⠳⣄⠀⠀⠀⠀  https://www.debian.org

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