[Numpy-tickets] [NumPy] #627: linalg.svd takes 100% CPU and never ends

NumPy numpy-tickets@scipy....
Sun Dec 9 06:32:48 CST 2007


#627: linalg.svd takes 100% CPU and never ends
--------------------------+-------------------------------------------------
 Reporter:  Czarny        |       Owner:  somebody
     Type:  defect        |      Status:  new     
 Priority:  high          |   Milestone:  1.0.5   
Component:  numpy.linalg  |     Version:  none    
 Severity:  blocker       |    Keywords:          
--------------------------+-------------------------------------------------
 When I call the svd function with an array it takes 100% of my CPU and
 never actually finishes the calculation. Python needs to get killed
 manually (Ctrl+C doesn't work as usually).

 I've tested that on:
 Linux:
 Linux kacper 2.6.22.10_laptop-0.6 #1 SMP PREEMPT Sun Oct 21 17:48:51 CEST
 2007 i686 Intel(R)_Pentium(R)_M_processor_1.70GHz PLD Linux
 python-2.5.1-4.i686
 python-numpy-1.0.4-1.i686
 (I've tried with earlier 1.0.3.1 as well)

 Windows:
 i686
 python-2.5
 python-numpy-1.0.4

 I've used two scripts found on the net (google with 'svd python') and both
 behave in exactly the same way
 http://www.thescripts.com/forum/post1806623-4.html
 http://mail.python.org/pipermail/python-list/2006-November/412156.html

-- 
Ticket URL: <http://scipy.org/scipy/numpy/ticket/627>
NumPy <http://projects.scipy.org/scipy/numpy>
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