how to set the memory parameter in a Gurobi model using c++?

Answered

Igor Melo

May 11, 2023 16:42 Edited

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I'm trying to set a memory limit to my Gurobi Model.

GRBEnv env = GRBEnv(true);
env.set("LogFile", "Model_DEBUG.log");
env.start();
GRBModel model = GRBModel(env);
model.getEnv().set(GRB_DoubleParam_MemLimit, 8);

But, this doesn't work. How could I set this parameter?

I'm trying to set 8Gb of ram to my gurobi model, considering the c++ language

Related to

• C++
• Memory
• Parameters

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  Elisabeth Rodríguez Heck

  • Gurobi Staff

  May 12, 2023 10:40

  Hi Igor,

  Which Gurobi version are you using? In version 9.5 the MemLimit parameter had to be set before starting the environment. If you are using 9.5, your code should be replaced by

  GRBEnv env = GRBEnv(true);
  env.set("LogFile", "Model_DEBUG.log");
  env.set("MemLimit", 8);
  env.start();
  GRBModel model = GRBModel(env);

  But starting from version 10.0 your original snippet should work.

  Elisabeth

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  Igor Melo

  May 12, 2023 15:44

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  Thank you very much, I'll try this way

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