Gurobi LP model (C++ library) killed on the run or out-of-memory exception thrown

Answered

Roberto Bargetto

September 06, 2022 14:21

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Hello,

Running an LP model coded with the C++ library, the process is killed on the run or the program throws an out-of-memory exception (more likely if the env 'GRB_DoubleParam_MemLimit' is set to a reasonable value, e.g., 8GB).

Model details
Optimize a model with 16000 rows, 64000000 columns and 128000000 nonzeros

The program is executed on a laptop with 16GB RAM and i-7 CPU running ubuntu 20.04 LTS OS.
Gurobi is used under a personal non-commercial academic license.
The same issue does not come up on Windows, but I need to run my program on ubuntu.

What's the problem?
Is it my code or Gurobi to work this way?

Many thanks in advance.

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• Official comment

  

  Simranjit Kaur

  • Gurobi Staff

  November 16, 2025 23:29

  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.
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  Maliheh Aramon

  • Gurobi Staff

  September 07, 2022 03:09

  Hi Roberto,

  If you are getting the out-of-memory exception with error code 10001, it means that Gurobi runs out of memory. You can try some of the ideas suggested in the article How do I avoid an out-of-memory condition? 

  Best regards,

  Maliheh

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  Roberto Bargetto

  September 13, 2022 07:37

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  Hello Maliheh,

  Thank you for your response.

  All the options listed by G. Glockner have been tested or included in my code.
  My program goes out-of-memory solving such an LP model running the optimization or, if the model is very large, adding the variables to the model (call to method 'GRBModel::addVar(..)').

  Best regards,
  Roberto

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