8000 ENH: np.linalg.eig doesn't process the SIGINT signal · Issue #11081 · numpy/numpy · GitHub
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ENH: np.linalg.eig doesn't process the SIG 8000 INT signal #11081

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yurivict opened this issue May 12, 2018 · 2 comments
Open

ENH: np.linalg.eig doesn't process the SIGINT signal #11081

yurivict opened this issue May 12, 2018 · 2 comments
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01 - Enhancement component: numpy.linalg

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@yurivict
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Ctrl-C doesn't have any effect.

py27-numpy-1.13.3_3,1 on FreeBSD-11.1
@yurivict yurivict changed the title np.linalg.eig doesn't process the SIGINT np.linalg.eig doesn't process the SIGINT signal May 12, 2018
@mattip mattip changed the title np.linalg.eig doesn't process the SIGINT signal ENH: np.linalg.eig doesn't process the SIGINT signal Jun 19, 2018
@mattip
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mattip commented Jun 19, 2018

It is hard to pick the right time, but it seems OpenBlas is not respecting the signal. When I hit ^C after ~2 seconds until the code enters the eig call, the interrupt only returns after ~5 more seconds.

>>> c,d = np.linalg.eig(a)
>>> a = np.empty((100, 1000,1000), dtype=float) # big enough to take some time
>>> c,d = np.linalg.eig(a)
^CTraceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/matti/pypy_stuff/cpython3_virt/lib/python3.6/site-packages/numpy/linalg/linalg.py", line 1256, in eig
    w, vt = _umath_linalg.eig(a, signature=signature, extobj=extobj)
KeyboardInterrupt
>>>

@seberg seberg mentioned this issue Jun 8, 2020
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@seberg
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seberg commented Jun 19, 2020

I tseems (with the exception of a few releases which recieved backports). A possible solution should be to call PyOS_InterruptOccurred() repeatedly. We could probably query that periodically in the outer iteration either in the iterator, or the ufunc machinery itself.

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