[Numpy-discussion] crash at prompt exit after running test

Johann Cohen-Tanugi cohen@lpta.in2p3...
Tue Mar 9 17:33:02 CST 2010

On 03/10/2010 12:07 AM, Pauli Virtanen wrote:
> ti, 2010-03-09 kello 21:14 +0100, Johann Cohen-Tanugi kirjoitti:
>> thinking about it, this morning there was a fedora update to python, so
>> I am using 2.6.2-4.fc12.
>> Looks like the problem is in python itself, hence this piece of info.
> That the problem would be in Python is not so clear to me. Can you try
> running it with the previous Python shipped by Fedora? Do you see the
> problem then? What's the previous version, btw?
2.6.2-1 IIRC. I would have to check, and I am not sure how to either 
query this information or step back one update up with yum :(
> Memory errors are somewhat difficult to debug. Can you try running only
> a certain subset of the tests, first
> 	nosetests numpy.core
> Be sure to set Pythonpath so that you get the correct Numpy version. If
> it segfaults, proceed to (under numpy/core/tests)
> 	nosetests test_multiarray.py
> 	nosetests test_multiarray.py:TestNewBufferProtocol
neither crash, so the problem is not there....
> Since the crash occurs in cyclic garbage collection, I'm doubting a bit
> the numpy/core/src/multiarray/numpymemoryview.c implementation, since
> that's the only part in Numpy that supports that.
> Alternatively, just replace numpymemoryview.c with the attached one
> which has cyclic GC stripped, and see if you still get the crash.
> Cheers,
> Pauli
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