How does gurobi use hyperthreading?

Answered

Yiman Hou

• March 18, 2022 20:19

Hi,

I'm interested to know how does Gurobi use hyper threaded cores? For example how does Gurobi choose the number of computation threads to use in a multi job setting?

0

• 

  Jaromił Najman

  Gurobi Staff

  • March 21, 2022 08:07

  Gurobi uses all threads available on the machine, unless parameter Threads is set explicitly by the user. Usually, also hyperthreading is exploited by Gurobi unless there is some specific OS setting preventing this.

  It is important to limit the number of Threads used by Gurobi when running multiple jobs on 1 machine to avoid interference of solutions processes.

  Note that using an excessive amount of threads is not always best, cf. Does using more threads make Gurobi faster?

  Best regards, 
  Jaromił

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