[Scipy-tickets] [SciPy] #1523: another Arpack crash on OS X python 2.7, 64-bit

SciPy Trac scipy-tickets@scipy....
Mon Oct 10 16:47:02 CDT 2011

#1523: another Arpack crash on OS X python 2.7, 64-bit
 Reporter:  rgommers             |       Owner:  wnbell
     Type:  defect               |      Status:  new   
 Priority:  highest              |   Milestone:  0.10.0
Component:  scipy.sparse.linalg  |     Version:  0.9.0 
 Keywords:  arpack, segfault     |  

Comment(by rgommers):

 Attached a script extracted from the crashing tests that consistently
 crashes.  The problem seems to be in _UnsymmetricArpackParams.iterate() in
 arpack.py.  After a number of iterations the self.workl array contains
 nans and infs.  It then crashes either in iterate() or in extract() - the
 position is not the same each time and also depends on whether I use pdb
 or not.

 The routines called are snaupd and sneupd.

Ticket URL: <http://projects.scipy.org/scipy/ticket/1523#comment:21>
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