Getting NaN output from JuMP variable after solving

Specific Domains Optimization (Mathematical)
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1

Hi All,
I am running a linear program with Gurobi. The variable is set as

@variable(mod2,0<=L_time_bC[b in 1:18, c in 1:3] ) ```
I am using julia 1.62 with [c52e3926] Atom v0.12.32
  [336ed68f] CSV v0.8.5
  [9961bab8] Cbc v0.8.0
  [a93c6f00] DataFrames v1.2.0
  [c91e804a] Gadfly v1.3.3
  [2e9cd046] Gurobi v0.9.14
  [682c06a0] JSON v0.21.1
  [4076af6c] JuMP v0.21.8
  [e5e0dc1b] Juno v0.8.4
  [f0f68f2c] PlotlyJS v0.16.4
  [112f6efa] VegaLite v2.6.0
  [ade2ca70] Dates
2

Welcome! Please provide a minimal (non-)working example (preferrably copy-pastable). In your code, we don’t know what L_time_bC is and there is no indication what’s going wrong.

Please read this for more information on how to best help us to help you:

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3

Thanks for the reply. I will try to provide a working example. Just to add the problem is not happening with Julia 1.2. what should be the compatible JuMP version for Julia 1.62

4

If you have added JuMP via Pkg (e.g. via ]add JuMP), it will automatically pick the most recent version compatible with the julia version you’re using.

5

Did you check the solution status ? NaN value for JuMP variables are often obtained when the solver did not find any solution. You can see this with the different statuses. Posting the output of solution_summary here could help as well.

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