ConcurrentMIP - are instances communicating each other?

Answered

Niccolò Bulgarini

• July 17, 2019 12:24
• Edited

I'd like to know better how ConcurrentMIP works:

- are the different MIP instances communicating each other and exchanging the Best bound and Incumbent values? Or they are completely independent?

- when running ConcurrentMIP, do I use just one license slot or maybe the same amount of MIP instances?

- ConcurrentMIP framework automatically selects different parameters for each run. is it possible to see which parameters have been used?

Thanks!

0

• Official comment

  

  Simranjit Kaur

  Gurobi Staff

  • December 06, 2024 00:55

  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?.
• 

  Daniel Espinoza

  • July 17, 2019 16:35

  Hi Noccolo,

  I guess you already took a look here:
  https://www.gurobi.com/documentation/8.1/refman/concurrent_optimizer.html

  Now, some more details:

  1. No, the instances do not communicate (much) between them. You will see the best bounds and solutions.
  2. AFAIR if you have the distributed/concurrent flag in your license, you will only use one slot, but you should check with your sales manager.
  3. No, you can not see which parameters where used in each instance, but you can set by hand the parameters used in each instance, and then you have complete control.

  Hope this helps,
  Daniel

  1
• 

  Niccolò Bulgarini

  • July 20, 2019 10:47

  

  

  

  Hi Daniel,

  thank you for your answer!

   

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