Using the optimal value printed by Gurobi

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Varun Deshpande

2021年02月06日 06:31

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How do I use the value of the optimized objective function? I.e I wish to use the Optimal objective.

Gurobi Optimizer version 9.1.0 build v9.1.0rc0 (win64)
Thread count: 2 physical cores, 2 logical processors, using up to 2 threads
Optimize a model with 7 rows, 2 columns and 9 nonzeros
Model fingerprint: 0xe878c395
Coefficient statistics:
  Matrix range     [1e+00, 1e+00]
  Objective range  [1e+00, 1e+00]
  Bounds range     [0e+00, 0e+00]
  RHS range        [1e+00, 3e+00]
Presolve removed 5 rows and 0 columns
Presolve time: 0.08s
Presolved: 2 rows, 2 columns, 4 nonzeros

Iteration    Objective       Primal Inf.    Dual Inf.      Time
       0    0.0000000e+00   1.000000e+00   0.000000e+00      0s
       1    0.0000000e+00   0.000000e+00   0.000000e+00      0s

Solved in 1 iterations and 0.15 seconds
Optimal objective  0.000000000e+00

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  Simranjit Kaur

  • Gurobi Staff

  2025年06月23日 03:00 編集済み

  This post is more than three years old. Some information may not be up to date. For current information, please check the Gurobi Documentation or Knowledge Base. If you need more help, please create a new post in the community forum. Or why not try our AI Gurobot?.
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  Jaromił Najman

  • Gurobi Staff

  2021年02月08日 08:25

  Hi Varun,

  You can get all model information through accessing its Attributes. In particular, you can access the optimal objective value via the ObjVal attribute of your model and the variable values at the optimal solution via the X attribute of the variables. For an example usage, please have a look at lines 38 - 41 of the mip1.py example.

  Best regards,
  Jaromił

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