Originally posted by: SystemAdmin

[rub said:]

Hi,

I had a question regarding post processing solutions when using warm start. I have an OPL5.5 code which has both pre-processing (warm start) and post-processing (solution outputting to text files) scripts. Even though the post-processing script works fine without warm start, I can't get the solution transferred to text files when the warm start script is activated. Can anyone suggest a solution to this?

Thanks!

RUB
#DecisionOptimization
#OPLusingCPLEXOptimizer

Originally posted by: SystemAdmin

[Can_T_OM said:]

Hi Rub,

I have already used warm start technique in different situations where output script transfers the solution into a text file. All you have to do is to write a simple statement in a Cplex1.solve() loop where Cplex1 is the problem that you want to solve.
The statement is:
Cplex.solve()
{
opl1.postProcess();
}

More precisely,
writeln("the second optimization phase is starting with an initial solution of opl0 of problem0");
 
 
    var Source1 = new IloOplModelSource("problem1.mod");
    var Def1 = new IloOplModelDefinition(Source1);
   
    var Cplex1 = new IloCplex();
    var opl1 = new IloOplModel(Def1, Cplex1);
    var Data1 = new IloOplDataSource("problem1.dat");
 
    opl1.addDataSource(Data1);
// You can customize your optimization, e.g.  Cplex1.MemoryEmphasis = 1;
    opl1.generate();
   
    // Make sure to attach the current solution value (all variables) as a solution starting point

Cplex1.solve()
{
opl1.postProcess();
}

I hope this helps.

#DecisionOptimization
#OPLusingCPLEXOptimizer