[SciPy-dev] Segmenation fault in flapack.zgesdd

Manuel Metz mmetz at astro.uni-bonn.de
Wed May 18 04:02:12 CDT 2005


Strange behavior for me (Debian Linux (sid), Python 2.3.5, SciPy 0.3.2, 
Numeric 23.8, Atlas 3.6.0):

Result of first call:
************************************************************************
:~/temp> python test_zgesdd.py
Exception in thread Thread-1 (most likely raised during interpreter 
shutdown):
Traceback (most recent call last):
   File "/usr/lib/python2.3/threading.py", line 442, in __bootstrap
   File "/usr/lib/python2.3/threading.py", line 422, in run
   File "/usr/lib/python2.3/site-packages/rpy.py", line 119, in r_eventloop
exceptions.AttributeError: 'NoneType' object has no attribute 'release'
Unhandled exception in thread started by
Error in sys.excepthook:

Original exception was:
************************************************************************

Second call:
************************************************************************
~/temp> python test_zgesdd.py
Unhandled exception in thread started by
Error in sys.excepthook:

Original exception was:
************************************************************************

I get the second message several times, however not reproducible. 
Sometimes the script finished without any error message. The same for 
python2.4.1. I saw this "threading problem" several times on my box...
This seems to be rpy related...

Manuel

Robert Kern schrieb:
> Nils Wagner wrote:
> 
>> Hi all,
>>
>> The enclosed test program stops with a segmentation fault.
> 
> 
> Works fine for me.
> 
> OS X 10.4
> Python 2.4.1
> Scipy CVS
> Numeric CVS
> ATLAS 3.7.8
> 

-- 
-------------------------------------
  Manuel Metz
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  D - 53121 Bonn

  E-Mail: mmetz at astro.uni-bonn.de
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