[Bonmin-tickets] [Bonmin] #52: bonmin/ipopt execs not constructed on osx 10.10.1

Bonmin coin-trac at coin-or.org
Fri Feb 20 23:03:06 EST 2015


#52: bonmin/ipopt execs not constructed on osx 10.10.1
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Reporter:  compiler  |       Owner:  pbonami
    Type:  defect    |      Status:  new
Priority:  major     |   Component:  Bonmin
 Version:  1.5       |  Resolution:
Keywords:            |
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Comment (by stefan):

 Well, depending on which algorithm you use, there are different
 relaxations to solve, different trees to manage, and different solvers
 used. This variety seems to generate some confusion.

 So if you select the outer approximation algorithm (B-OA), then Bonmin
 will alternate between solving a MIP relaxation and NLP subproblems. These
 MIP relaxation will be solved by CPLEX (if setting milp_solver cplex), so
 also the B&B-tree of these MIP relaxations will be managed by CPLEX and,
 of course, CPLEX will be the LP solver within CPLEX.
 The NLP subproblems are solved by Ipopt.

 I don't really know how to make Bonmin report this more clearly, as I'm
 not a Bonmin developer.

--
Ticket URL: <https://projects.coin-or.org/Bonmin/ticket/52#comment:5>
Bonmin <http://projects.coin-or.org/Bonmin>
Basic Open-source Nonlinear Mixed INteger programming



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