Is it possible to initialize a linear program?

Answered

Hideaki Nakao

April 16, 2020 02:26

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I have a linear programming problem (not MIP) where I can easily obtain a (basic) feasible solution. Is it possible to use this to skip phase-1 problem of the simplex algorithm?

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• Official comment

  

  Simranjit Kaur

  • Gurobi Staff

  June 23, 2025 03:14 Edited

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  Thomas Opfer

  April 16, 2020 17:05 Edited

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  Yes, you can do this. Just have a look at the following links:

  https://www.gurobi.com/documentation/9.0/refman/vbasis.html 

  https://www.gurobi.com/documentation/9.0/refman/cbasis.html 

  https://www.gurobi.com/documentation/9.0/refman/pstart.html 

  https://www.gurobi.com/documentation/9.0/refman/dstart.html 

  https://www.gurobi.com/documentation/9.0/refman/bas_format.html 

  Still, this will disable some optimizations, so please do not be unhappy if it does not improve the runtime.

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