Re:Constraint Programming
by 7thaccount on Monday September 12, 2022 @11:02AM
(#32811390)
I had to look that up as I couldn't believe they don't have that feature... especially since Import[] supports .MPS. I know they have plugin support for solvers like Mosek and I think GUROBI which I assume creates a .MPS and sends to the solver. Maybe it just does it all in memory. They really need to add that lol.
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it's so bizarre! why would they only do it halfway? and import is the least useful direction for them to implement.. how often are you building models outside of Mathematica to solve inside?
I can't use the Gurobi support, sadly, since my Gurobi instance is on another box (where I don't have MMA), and I needed to benchmark against HiGHS, CBC etc.
Re:Constraint Programming
by 7thaccount on Monday September 12, 2022 @02:46PM
(#32814945)
It's a good point that most people won't be using Mathematica for solving LP and MIP models as it just uses CBC as the backend anyway. I mean you could of course, but I think most folks would just use an API to call CBC more directly outside of Mathematica. I bet they could add this feature easily enough though.