is it possible to access dual/marginal variables

Question

is it possible to access dual/marginal variables

Jovansam opened this issue 4 years ago · 2 comments

Jovansam commented 4 years ago

I was trying to access a dual variable by way of JuMP.dual(x). I could not and got the following.

ModelLike of type GAMS.Optimizer does not support accessing the attribute MathOptInterface.NLPBlockDual(1)

Answer 1 · 2020-10-09T12:09:51.000Z

I can confirm the bug. I'll work on a fix.

Answer 2 · 2020-10-09T12:36:35.000Z

I added support for MOI.NLPBlockDual on the master branch. I'll release a fixed version later. In the meantime, you may want to test with the master branch. Thanks for submitting the issue!