Solver is Frozen

Answered

Wenbo Ma

August 22, 2021 20:31

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I was solving a large MILP problem. On a Linux server with Gurobi 9.1.2, the solver is always stuck solving the root node LP. However, I didn't have this problem when I tested the same problem on my windows machine (with much smaller RAM and CPU power than the Linux server) with Gurobi 9.1.1. Could the version be the reason for the difference?

Log from the Linux server:

Log from the Windows laptop:

 

 

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• Official comment

  

  Simranjit Kaur

  • Gurobi Staff

  June 23, 2025 02:49 Edited

  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

  August 26, 2021 07:25

  The issue has been resolved. It was an out-of-memory condition. Reducing the number of Threads reduced the amount of memory consumed. More details can be found in How do I avoid an out-of-memory condition?

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