cplex prints a lot to terminal although corresponding parameters are set
Question
I am using CPLEX in Cpp. After googling I found out what parameters need to be set to avoid cplex from printing to terminal and I use them like this:
IloCplex cplex(model);
std::ofstream logfile("cplex.log");
cplex.setOut(logfile);
cplex.setWarning(logfile);
cplex.setError(logfile);
cplex.setParam(IloCplex::MIPInterval, 1000);//Controls the frequency of node logging when MIPDISPLAY is set higher than 1.
cplex.setParam(IloCplex::MIPDisplay, 0);//MIP node log display information-No display until optimal solution has been found
cplex.setParam(IloCplex::SimDisplay, 0);//No iteration messages until solution
cplex.setParam(IloCplex::BarDisplay, 0);//No progress information
cplex.setParam(IloCplex::NetDisplay, 0);//Network logging display indicator
if ( !cplex.solve() ) {
....
}
but yet cplex prints such things:
Warning: Bound infeasibility column 'x11'.
Presolve time = 0.00 sec. (0.00 ticks)
Root node processing (before b&c):
Real time = 0.00 sec. (0.01 ticks)
Parallel b&c, 4 threads:
Real time = 0.00 sec. (0.00 ticks)
Sync time (average) = 0.00 sec.
Wait time (average) = 0.00 sec.
------------
Total (root+branch&cut) = 0.00 sec. (0.01 ticks)
Is there any way to avoid printing them?
Solution 2
This is what works in C++ according to cplex parameters doc:
cplex.setOut(env.getNullStream());
cplex.setWarning(env.getNullStream());
cplex.setError(env.getNullStream());
OTHER TIPS
Use setOut
method from IloAlgorithm
class (IloCplex
inherits from IloAlgorithm
). You can set a null output stream as a parameter and prevent logging the message on the screen.
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