How to use Gurobi 11 in Julia launched by Anaconda?

Specific Domains Optimization (Mathematical)
1

I have updated my Julia to 1.10.2 indeed, and the version of Gurobi.jl is 1.2.1, all packages are newly installed for Julia 1.10.2.
I have also downloaded the newest Gurobi 11 and updated the licence which support Gurobi 11

When I run the solver, the version is still 9.5.0
Even when I try to run a Gurobi model in Julia’s terminal, it is also 9.5.0, same to Anaconda.

I hope to know how to run Gurobi 11 in JuMP?

Thanks

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2

Try setting GUROBI_HOME to point to your new installation, then run import Pkg; Pkg.build("Gurobi"), and restart Julia for the change to take effect.

See GitHub - jump-dev/Gurobi.jl: Julia interface for Gurobi Optimizer

If it works, I should clarify the readme, since this comes up from time to time.

3

Thanks very much. I have tried the suggestions from this link and it does not works.

By the way, when I activate the newly obtained licence, I do it in Mac’s terminal, is that right?

4

Did you download Gurobi from gurobi.com? Where is it installed?

5

Hi,

I find the problem. When I look at “system/Library”, I find a “gurobi950” folder, and there is no gurobi11 folder… Should I delete it and re-install the new one?

But, when I use Python to run Gurobi, it is Gurobi 11…

6

You need to download and install Gurobi 11 from gurobi.com.

Installing gurobipy on pip or conda automatically installs Gurobi, but Julia can’t easily use that version.

7

Thank you very much. I have fixed that. Gurobi 11 can be run on JuMP now.

I am very grateful

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8

Great! Let me know if you have any other questions

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