If I try to solve a problem in JuMP, and I get an error or a solution that doesn’t make sense, it usually means I incorrectly coded or misspecified the problem I was trying to solve. I can try to proofread my code or check my math, but sometimes this is hard. I would like to be able to get some feedback from JuMP about what is going wrong.
In general, is there a way I can see (in various levels of detail) the steps of the algorithm its doing on my problem, with actual numbers? That may give me a sense of what the problem is.
The regular output (see below) does show me some info for each iteration such as objective value, but I would like to see a bit more detail such as decision variables at each iteration.