On 03/10/2010 12:33 AM, Johann Cohen-Tanugi wrote:
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
crash
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....
I followed your lead and tried each script and ended up with :
[co...@jarrett tests]$ nosetests test_ufunc.py
.............
----------------------------------------------------------------------
Ran 13 tests in 1.146s
OK
python: Modules/gcmodule.c:277: visit_decref: Assertion `gc->gc.gc_refs
!= 0' failed.
Aborted (core dumped)
so test_ufunc.py seems to be at stake
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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