In mkl-service/mkl/init.py, at line 49, _mlkinit is missing, leading to UserWarning while using multiprocessing and joblib libraries.
error message
UserWarning: mkl-service package failed to import, therefore Intel(R) MKL initialization ensuring its correct out-of-the box operation under condition when Gnu OpenMP had already been loaded by Python process is not assured. Please install mkl-service package, see http://github.com/IntelPython/mkl-service
from . import _distributor_init