[Scipy-tickets] [SciPy] #450: scipy (R3108) test fails and python quits with Illegal Instruction on check_cosine_weighted_infinite

SciPy scipy-tickets@scipy....
Sun Sep 30 09:16:06 CDT 2007


#450: scipy (R3108) test fails and python quits with Illegal Instruction on
check_cosine_weighted_infinite
-----------------------------+----------------------------------------------
 Reporter:  pcls             |        Owner:  somebody
     Type:  defect           |       Status:  new     
 Priority:  normal           |    Milestone:  0.7     
Component:  scipy.integrate  |      Version:  devel   
 Severity:  normal           |   Resolution:          
 Keywords:                   |  
-----------------------------+----------------------------------------------
Comment (by robince):

 I have the same problem...

 I am on a Pentium 4, Ubuntu 7.04, gcc 4.1.2

 I had it initially with an svn build from a few months, which I built with
 standard ubuntu g77 and ubuntu atlas (atlas-sse2-dev).

 I just rebuilt with gfortran, Atlas 3.7.37, lapack 3.1.1 and the current
 SVN (3383) and it is the same problem.

 scipy.test(10,1) fails:
  Tilbert transform of periodic functions
 =========================================
  size  | optimized |    naive
 -----------------------------------------
    100 |      0.05 |      0.36  (secs for 1500 calls)
   1000 |      0.05 |      0.25  (secs for 300 calls)
    256 |      0.06 |      0.43  (secs for 1500 calls)
    512 |      0.06 |      0.36  (secs for 1000 calls)
   1024 |      0.06 |      0.28  (secs for 500 calls)
   2048 |      0.04 |      0.19  (secs for 200 calls)
   4096 |      0.04 |      0.18  (secs for 100 calls)
   8192 |      0.05 |      0.21  (secs for 50 calls)
 ....Residual: 1.05006950608e-07
 ...Illegal instruction (core dumped)

 scipy.test(verbosity=9999):
 check_algebraic_log_weight (scipy.integrate.tests.test_quadpack.test_quad)
 ... ok
 check_cauchypv_weight (scipy.integrate.tests.test_quadpack.test_quad) ...
 ok
 check_cosine_weighted_infinite
 (scipy.integrate.tests.test_quadpack.test_quad)Illegal instruction (core
 dumped)


 I would be happy to provide any extra information required.

-- 
Ticket URL: <http://scipy.org/scipy/scipy/ticket/450#comment:3>
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