Issue with setting parameters in Gurobi 11.0

[Alex Cage]

Hi, everyone,

Lately I upgraded the Gurobi solver to 11.0. The models are solvable, but when I use the "ops" to set MIP parameters, for example:

'ops = sdpsettings(ops, 'gurobi.Cuts', 0)', or

'ops = sdpsettings(ops, 'gurobi.MIPFocus', 2)'

The following problem comes out:

'Unknown problem in solver (Turn on 'debug' in sdpsettings) (Error using gurobi
     Gurobi error 10008: Unable to set parameter TuneTimeLimit to value -1 (minimum is 0)
     )'

The same settings under Gurobi 10.3 work fine. I use MAC M1 pro and Matlab 2023b (ARM).

My question is how to set these parameters correctively. Thank you.

[Johan Löfberg]

Yes, they just annoyingly introduced a breaking change in 11.0, so you will have to edit the default value in sdpsettings to make it run unless you manually set it every time

[liu xiao]

can you have us a example, I face the same issue

[Johan Löfberg]

easiest is to install the develop branch where it has been fixed. otherwise, just edit sdpsettings and comment out the line related to that setting