5
$\begingroup$

I have an MINLP problem to solve where I was initially using 'ipopt' solver but the solution was not sticking to 'binary/boolean/integer' domain type for a variable. I am not sure which free solver would be good to go? Also, I understand 'SCIP' is not straight forward to use. Looking forward to the response.

$\endgroup$
  • $\begingroup$ It would be considered, Pyomo has a nice facility to deal with the NEOS server to use a dozen solvers without any challenging. Would you see this link? $\endgroup$ – A.Omidi Oct 21 at 15:21
  • $\begingroup$ stackoverflow.com/help/someone-answers $\endgroup$ – kur ag Oct 23 at 12:02
4
$\begingroup$

SCIP used to be a bit challenging to set up with PYOMO as we needed to build the ASL interface. It's been a few years so I don't know if that's changed, but you can find a relevant discussion here.

What might be easier would be to use Couenne, which is a deterministic global optimisation solver for MINLP and works out of the box with PYOMO.

If you are a student/academic, you can also use our own global MINLP solver (Octeract Engine) for free.

If you do, you can find a detailed tutorial on how to use it with PYOMO on Windows & Linux here.

| improve this answer | |
$\endgroup$
3
$\begingroup$

You can use SCIP with PYOMO easily. My way is: At first, use an executable SCIP version, it is available for the 7.0 version. After then giving the path of the executable to PYOMO, such as:

    solver = SolverFactory('scip', executable="./scip")

It works. But I use BONMIN in same way.

| improve this answer | |
$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.