ipopi maxiter

[Asher Metzger]

Hi Johan,

The run exceeds the default 1500 iterations for ipopt.

I try the ops.ipopt.MaxIter = 3000.

But it doesn't work.

I also tried: ops=sdpsettings('solver','ipopt','ipopt.maxiter',3000)

Is there something I'm doing wrong?

thanks in advance,

Asher

[Johan Löfberg]

No such option on my version (YALMIP should only support ipopt through opti toolbox)

>> x = sdpvar(10,1);

>> optimize(-1<=sum(x)<=1,(x.^2)'*(x.^2)+sum(sin(x).^3),sdpsettings('solver','ipopt','ipopt.maxiter',2))

Error using sdpsettings (line 281)

Unrecognized property name 'ipopt.maxiter'.
>> optimize(-1<=sum(x)<=1,(x.^2)'*(x.^2)+sum(sin(x).^3),sdpsettings('solver','ipopt','ipopt.max_iter',2))

EXIT: Maximum Number of Iterations Exceeded.

ans = 

    yalmiptime: 0.1183

    solvertime: 0.1057

          info: 'Maximum iterations or time limit exceeded (IPOPT)'

       problem: 3

[Johan Löfberg]

Note that the problem is trivially infeasible

>> Const=[C1;C3;C4;C5;C6;C7];

>> optimize(Const)

Optimize a model with 9262 rows, 4222 columns and 12343 nonzeros

Coefficient statistics:

  Matrix range    [1e+00, 1e+00]

  Objective range [0e+00, 0e+00]

  Bounds range    [0e+00, 0e+00]

  RHS range       [5e+00, 2e+02]

Presolve removed 7186 rows and 3939 columns

Presolve time: 0.01s

Solved in 0 iterations and 0.01 seconds

Infeasible model

ans = 

    yalmiptime: 0.4595

    solvertime: 0.0155

          info: 'Infeasible problem (GUROBI-GUROBI)'

       problem: 1

[Asher Metzger]

thanks. I found the mistake.