Retrieving logs from a Cloud run

Answered

Alvaro Palma

January 25, 2021 15:17 Edited

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Hi everybody.

I'm using Gurobi Instant Cloud to run my MIP problem, and I'd like to retrieve the log associated to it. My code has set the logging option:

int rval = GRBsetintparam(GRBgetenv(m_model), GRB_INT_PAR_OUTPUTFLAG, 1);

But, since my MIP is being run on a remote machine, my stdout only shows the communication details:

Compute Server job ID: a25a59de-01b8-49ce-9c1a-4997c15de830
Capacity available on 'https://ip-10-0-75-145:61000' - connecting...
Established HTTPS encrypted connection

Compute Server communication statistics:
Sent: 22.2 MBytes in 374 msgs and 0.00s (0.00 MB/s)
Received: 1.8 MBytes in 848 msgs and 0.00s (0.00 MB/s)

Is it doable to retrieve such logs from the remote machine, or should I modify my code to use directly the cloud functionality from it (and not via the Instant Cloud, which, I must say, would be a very undesirable solution)?

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• Official comment

  

  Simranjit Kaur

  • Gurobi Staff

  June 23, 2025 03:01 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

  January 26, 2021 09:55

  Hi Alvaro,

  You can retrieve the LOG file from the Cloud by setting the corresponding parameter for the environment holding your model.

  In C++ this could be something like

  // Create an environment
  GRBEnv env = GRBEnv(true);
  env.set("LogFile", "myLogFile.log");
  env.start();
  
  // Create an empty model
  GRBModel model = GRBModel(env);

  Best regards,
  Jaromił

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