How to record the time whenever gurobi find a new incumbent(best feasible solution so far)

Answered

liu heng

May 08, 2024 08:22

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I want to record the primal bound along with the time spent, in order to plot the figure.

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• Log Files

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• Official comment

  

  Simranjit Kaur

  • Gurobi Staff

  November 13, 2026 01:25

  This post is more than two 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.
• 

  David Torres Sanchez

  • Gurobi Staff

  May 08, 2024 11:34 Edited

  Hi Liu,

  You can parse and plot the log using gurobi-logtools.

  import gurobi_logtools as glt
  
  results = glt.parse("yourlog.log")
  glt.plot(results.progress("nodelog"))

  See the full example in the gurobi-logtools.ipynb

  Alternatively, you can achieve this manually using callbacks.
  Please see:  Tutorial: Customization Through Callbacks.

  Cheers, 
  David

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