[Cmpl] Setting parameters for CPLEX

[Mike Steglich]

Hi Christopher,

As written in the manual (page 81), you can use the parameters for the Interactive Optimizer in CMPL. The names of sub-parameters of hierarchical parameters have to be separated by slashes.
%opt cplex mip/tolerances/mipgap 0.10


Cheers,

Mike

> Am 04.02.2016 um 16:41 schrieb Christopher Gross <christopher.gross at unikat.uni-augsburg.de <mailto:christopher.gross at unikat.uni-augsburg.de>>:
> 
> Hi,
> 
> when solving a model with CPLEX, I would like to be able to specify a MIP gap. In CPLEX interactive mode, this can be done with the command "set mip tolerances mipgap 0.5".
> 
> I tried adding this to the head section of my model like this:
> 
> %opt cplex "mip tolerances mipgap" 0.5
> 
> and also without quotes:
> 
> %opt cplex mip tolerances mipgap 0.5
> 
> and with points as separator
> 
> %opt cplex mip.tolerances.mipgap 0.5
> 
> Unfortunately, the first two variants generate a CMPL error (Error (CMPL header): file model.cmpl in line 14:  mipgap": To much options per line) and the third variant is not recognized by CPLEX.
> 
> What is the correct way of setting this CPLEX parameter with CMPL?
> 
> Thanks,
> 
> Christopher
> -- 
> Christopher Gross, M.Sc.
> 
> Lehrstuhl für Health Care Operations/Health Information Management
> 
> Universitäres Zentrum für Gesundheitswissenschaften am Klinikum Augsburg
> (UNIKA-T), Neusässer Straße 47, 86156 Augsburg;
> 
> Wirtschaftswissenschaftliche Fakultät, Universität Augsburg,
> Universitätsstraße 16, 86159 Augsburg
> 
> 
> Tel.: +49 821 598-6454
> 
> E-Mail:  christopher.gross at unikat.uni-augsburg.de <mailto:christopher.gross at unikat.uni-augsburg.de>
> Web:  http://www.wiwi.uni-augsburg.de/bwl/brunner/ <http://www.wiwi.uni-augsburg.de/bwl/brunner/>
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