[Numpy-discussion] Numpy 1.11.3, scipy 0.18.1, MSVC 2015 and crashes in complex functions

[David Cournapeau]

Hi there,

While building the latest scipy on top of numpy 1.11.3, I have noticed
crashes while running the scipy test suite, in scipy.special (e.g. in
scipy.special hyp0f1 test).. This only happens on windows for python 3.5
(where we use MSVC 2015 compiler).

Applying some violence to distutils, I re-built numpy/scipy with debug
symbols, and the debugger claims that crashes happen inside scipy.special
ufunc cython code, when calling clog or csqrt. I first suspected a compiler
bug, but disabling those functions in numpy, to force using our own
versions in npymath, made the problem go away.

I am a bit suspicious about the whole thing as neither conda's or gholke's
wheel crashed. Has anybody else encountered this ?

David

[Evgeni Burovski]

Related to https://github.com/scipy/scipy/issues/6336?

Post by David Cournapeau
Hi there,
While building the latest scipy on top of numpy 1.11.3, I have noticed
crashes while running the scipy test suite, in scipy.special (e.g. in
scipy.special hyp0f1 test).. This only happens on windows for python 3.5
(where we use MSVC 2015 compiler).
Applying some violence to distutils, I re-built numpy/scipy with debug
symbols, and the debugger claims that crashes happen inside scipy.special
ufunc cython code, when calling clog or csqrt. I first suspected a compiler
bug, but disabling those functions in numpy, to force using our own
versions in npymath, made the problem go away.
I am a bit suspicious about the whole thing as neither conda's or gholke's
wheel crashed. Has anybody else encountered this ?
David
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[David Cournapeau]

Indeed. I wrongly assumed that since gholke's wheels did not crash, they
did not run into that issue.

That sounds like an ABI issue, since I suspect intel math library supports
C99 complex numbers. I will add info on that issue then,

David

On Mon, Jan 23, 2017 at 11:46 AM, Evgeni Burovski <

Post by Evgeni Burovski
Related to https://github.com/scipy/scipy/issues/6336?

Post by David Cournapeau
Hi there,
While building the latest scipy on top of numpy 1.11.3, I have noticed
crashes while running the scipy test suite, in scipy.special (e.g. in
scipy.special hyp0f1 test).. This only happens on windows for python 3.5
(where we use MSVC 2015 compiler).
Applying some violence to distutils, I re-built numpy/scipy with debug
symbols, and the debugger claims that crashes happen inside scipy.special
ufunc cython code, when calling clog or csqrt. I first suspected a compiler
bug, but disabling those functions in numpy, to force using our own
versions in npymath, made the problem go away.
I am a bit suspicious about the whole thing as neither conda's or
gholke's wheel crashed. Has anybody else encountered this ?
David
_______________________________________________
NumPy-Discussion mailing list
https://mail.scipy.org/mailman/listinfo/numpy-discussion

_______________________________________________
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https://mail.scipy.org/mailman/listinfo/numpy-discussion