SMP module allows to set static affinity mask for each process inside process pool to limit total number of threads running in application:

python -m smp [-f <oversubscription_factor>] [-p <number_of_outermost_processes>] script.py

The module supports two types of process pool: multiprocessing.pool.Pool and concurrent.futures.ProcessPoolExecutor, as well as one thread pool: multiprocessing.pool.ThreadPool. Can be run with TBB module as well:

python -m smp [-f <oversubscription_factor>] [-p <number_of_outermost_processes>] -m tbb script.py