IntelĀ® MPI Library User's Guide for Linux* OS
The process of tuning can take a lot of time. Due to the varying factors involved in each cluster and application setup, the tuning time can be unpredictable.
To restrict the tuning time, you can set the -time-limit option. For example, to limit the tuning to 8 hours (480 minutes), run the following command:
$ mpitune --time-limit 480
The time unit used is minutes.