How frequent is the polling callback?

Answered

Edgar Cutar Junior

July 03, 2020 17:32 Edited

• 
• 
• 

I have the most simple of doubts, yet I am failing to find this information.

One of the parameters of Gurobi's callbacks is the "where" and the first one of them is the POLLING callback, which is defined as a "periodic polling callback".

 

But how frequent is this polling? once per minute? once per second? once per hour?

0

• Official comment

  

  Yuriy Zinchenko

  • Gurobi Staff

  July 06, 2020 20:57 Edited

  There is no guaranteed fixed time interval at which the polling callback is called. 

  To give you an idea of the general frequency at which the polling callback might be called, here are some quick results for two MIP models from the Gurobi examples directory, solved on my machine with Gurobi 9.0.2:

  
  instance        polling_cbs    runtime      polling/sec
  glass4.mps   86941            79.979       1087.04
  misc07.mps  4402              2.319         1898.31

  These numbers will of course be different for different models.
• Official comment

  

  Simranjit Kaur

  • Gurobi Staff

  June 23, 2025 03:10 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?.

Post is closed for comments.