Set the Priority of Variables

Answered

Masoud Kavoosi

March 30, 2022 18:00

Hi there,

In CPLEX we have the capability to set the priority order for the variable var to pri in the format below:

public void setPriority(IloNumVar var, IloNum pri)

Does Gurobi have this option as well? I looked for it in several resources but could not find anything relevant.

Thanks,

Masoud

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Official comment
Simranjit Kaur

Gurobi Staff

November 16, 2025 23:40
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 try Gurobot, our chatbot interface offering instant, expert-level support.
Maliheh Aramon

Gurobi Staff

March 31, 2022 03:01
Hi Masoud,

Yes, you can use the integer-valued BranchPriority variable attribute to set a branching priority for each variable. For example, in Gurobi C++ API, you can use the GRBVar::set(GRB_IntAttr_BranchPriority, int) method.

A priority ordering file (ORD format) can also be read in by Gurobi to input a set of variable priority orders.

Best regards,

Maliheh
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