Originally posted by: victortkl

Hi, i come across a problem about not enough memory. what can i do?
i used optmodel.end() and cplex.end() to free memory, but it seems still consuming much memory while iterating. what else can i do?

here is my main code, even iterate one time in the outer loop. it still lack of memory.

main 
{ var big_sce=1000; 
//    var theta=0.38; 

for (var theta=0.3;theta>=0.3;theta=theta-0.01) 
{ var source = 

new IloOplModelSource(
"ite_inventory_base.mod"); var cplex = 

new IloCplex(); var def = 

new IloOplModelDefinition(source); var optmodel = 

new IloOplModel(def,cplex); var datafile= 

new IloOplDataSource(
"ite_inventory_base.dat"); var datatheta = 

new IloOplDataElements(); datatheta.thetainv = theta; optmodel.addDataSource(datatheta); optmodel.addDataSource(datafile); optmodel.settings.mainEndEnabled = 

true; optmodel.generate(); optmodel.settings.mainEndEnabled = 

true; var isok=0; 

if (cplex.solve()) 
{ optmodel.postProcess(); writeln(
"theta = "+theta+
"\tget solution:\t"+cplex.getObjValue()); isok=1; optmodel.end(); cplex.end(); 
} 

else 
{ writeln(
"theta = "+theta+
"\tno solution"); optmodel.end(); cplex.end(); 
} 

if (isok==1) 
{ 

for (var simite=1;simite<=big_sce;simite++) 
{ source = 

new IloOplModelSource(
"sim_inventory_base.mod"); cplex = 

new IloCplex(); def = 

new IloOplModelDefinition(source); var simmodel = 

new IloOplModel(def,cplex); datafile= 

new IloOplDataSource(
"sim_inventory_base.dat"); var datasce = 

new IloOplDataElements(); datasce.numm = simite; datasce.thetainv=theta; 
//                datatheta.thetademand=theta; simmodel.addDataSource(datasce); simmodel.addDataSource(datafile); simmodel.settings.mainEndEnabled = 

true; simmodel.generate(); simmodel.settings.mainEndEnabled = 

true; 
//                simmodel.settings.mainEndEnabled = true;            

if (cplex.solve()) 
{ 
//                    //get the original data 
////                    if (simite mod 10==0) 
////                    { writeln(
"ite:"+simite+
":\t"+cplex.getObjValue()); 
////                    } simmodel.postProcess(); simmodel.end(); cplex.end(); 
} 

else 
{ writeln(
"ite:"+simite+
":\t"+
"no solution"); 
}   
} 
} 
} 
}

#DecisionOptimization
#OPLusingCPLEXOptimizer

Originally posted by: SystemAdmin

you only end the IloOplModel and the IloCplex.
You should also end the data sources, data elements, ... in the reverse order of creation to avoid memory mismatch freeing.
#DecisionOptimization
#OPLusingCPLEXOptimizer

Originally posted by: UDOPS

Can you expand on that advice. You say in the reverse order of creation. That is interesting, and something I have not considered.
#DecisionOptimization
#OPLusingCPLEXOptimizer