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3 comments

• Gurobi Staff

Hi Hector,

Are you able to look at the full log produced by Gurobi? It seems that Gurobi does not improve the objective bound past $$0$$ in the 60-second time limit. If you want to focus on improving the bound, a good place to start is to set the Cuts parameter to a more aggressive value and/or the MIPFocus parameter to 3. Of course, if the optimal objective value is $$0$$, then the bound cannot be improved any further.

Thanks,

Eli

Hello,

I am having a similar problem. I am trying to find out the best bound of a simple test problem so that I can use it in my original problem. I am using the following commands on AMPL.

model 2Modefile.mod;
data 2dataset.dat;
option gurobi_options 'bestbound=1';
option solver gurobi;

solve;

The output is the following.

Gurobi 9.1.1: bestbound=1
Gurobi 9.1.1: optimal solution; objective 13150
4 simplex iterations

suffix bestbound OUT;

My question is why it is showing "bestbound OUT"?

Thanks,

Pritom

I answered this question in another thread where you asked it today.

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