[Suggestion] Add parameter for setting openblas threads

[klosax]

Openblas deafults to some maximum available threads, but would probably not be the most optimal.
In Openblas there is a function to set the number of threads, why not use this?

void openblas_set_num_threads(int num_threads);

Current workaround is to set an openblas environment variable.

[github-actions]

This issue was closed because it has been inactive for 14 days since being marked as stale.