[Scipy-tickets] [SciPy] #1742: The new scipy optimize lbfgsb code prints text even if disp==0

SciPy Trac scipy-tickets@scipy....
Fri Oct 5 14:06:32 CDT 2012


#1742: The new scipy optimize lbfgsb code prints text even if disp==0
----------------------+-----------------------------------------------------
 Reporter:  sega_sai  |       Owner:  somebody   
     Type:  defect    |      Status:  new        
 Priority:  normal    |   Milestone:  Unscheduled
Component:  Other     |     Version:  0.11.0     
 Keywords:            |  
----------------------+-----------------------------------------------------
 Hi,

 After updating to the new scipy version, I noticed that scipy optimize
 lbfgsb prints

  'Positive dir derivative in projection
  Using the backtracking step '
 all the time despite the disp=0 option specified.

 Apparently the code in lbfgsb.f which does this print does not check for
 the printing flag. Patch attached.

-- 
Ticket URL: <http://projects.scipy.org/scipy/ticket/1742>
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