[Dip-tickets] [Dip] #31: Problem with 0 integer variables

Dip coin-trac at coin-or.org
Mon Oct 4 12:25:44 EDT 2010


#31: Problem with 0 integer variables
----------------------+-----------------------------------------------------
  Reporter:  kmartin  |      Owner:  mgalati
      Type:  defect   |     Status:  new    
  Priority:  major    |    Version:  trunk  
Resolution:           |   Keywords:         
----------------------+-----------------------------------------------------

Comment (by mgalati):

 In the case of pure IP, we typically want to stop the col-gen process
 early, so MasterGapLimit=0.01 by default. In the case of pure LP, that
 won't work. Now, if the problem is a pure LP, internally, DIP will change
 that parameter to 1.0e-8. You will see this message:

 {{{
 Problem is an LP. Reset param MasterGapLimit = 1e-08
 }}}

-- 
Ticket URL: <https://projects.coin-or.org/Dip/ticket/31#comment:5>
Dip <https://projects.coin-or.org/Dip>
An extensible software framework for implementing decompositon-based bounding algorithms for use in solving large-scale discrete optimization problems.



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