[Osi-tickets] [COIN-OR Open Solver Interface] #70: Postprocessing of GMPL models

COIN-OR Open Solver Interface coin-trac at coin-or.org
Mon Dec 22 00:15:25 EST 2008


#70: Postprocessing of GMPL models
----------------------------+-----------------------------------------------
 Reporter:  xypron          |       Owner:  mjs   
     Type:  enhancement     |      Status:  new   
 Priority:  major           |   Milestone:        
Component:  Osi Base Class  |     Version:  0.96.1
 Keywords:                  |  
----------------------------+-----------------------------------------------
 GMPL can be used to define models, which can be imported via method
 OsiSolverInterface->readGMPL.

 GMPL can also be used to define post processing, which can be used for
 efficient output of the results of an optimization run.

 Unfortunately method readGMPL always calls mpl_terminate(gmpl). Hence it
 is not possible to execute the postprocessing of the GMPL model.

 I suggest to add an optional parameter to readGMPL which allows to keep
 the model opened and a new method to OsiSolverInterface to execute the
 postprocessing phase in GLPK.

-- 
Ticket URL: <https://projects.coin-or.org/Osi/ticket/70>
COIN-OR Open Solver Interface <http://projects.coin-or.org/Osi>
An API for a variety of LP and MIP solvers (and more).



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