In [1]:

    

%load_ext Cython


    

In [2]:

    

%%cython
# distutils: extra_compile_args = -fopenmp
# distutils: extra_link_args = -fopenmp
cimport openmp
from cython.parallel cimport parallel
def get_num_threads():
    cdef int num_threads
    
    with nogil, parallel():
        num_threads = openmp.omp_get_num_threads()
        with gil:
            return num_threads


    

In [3]:

    

get_num_threads()


    

    
Out[3]:





4