Example code on warm starting linear programs in Gurobi.
Java
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src/com/anlak/gurobi_warm_start
README.md
bigmodel.zip

README.md

The code in this repository demonstrates two methods to warm start your linear programs in Gurobi. For the full article please visit my blog post.

Example output:

Cold start: 1.271 secs.
Warm start with VBasis/CBasis: 0.110 secs.
Warm start with PStart/Dstart: 0.230 secs.

As you can see above, warm starting your linear programs after a modification to the model makes a dramatic difference. This scenario is a crucial part of column generation procedure.