How to use the mkl.set_num_threaads function in mkl
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constantinpape / elf / elf / util.py View on Github 
def set_numpy_threads(n_threads):
""" Set the number of threads numpy exposes to its
underlying linalg library.
This needs to be called BEFORE the numpy import and sets the number
of threads statically.
Based on answers in https://github.com/numpy/numpy/issues/11826.
"""
# set number of threads for mkl if it is used
try:
import mkl
mkl.set_num_threaads(n_threads)
except Exception:
pass
for name in ['libmkl_rt.so', 'libmkl_rt.dylib', 'mkl_Rt.dll']:
try:
mkl_rt = ctypes.CDLL(name)
mkl_rt.mkl_set_num_threads(ctypes.byref(ctypes.c_int(n_threads)))
except Exception:
pass
# set number of threads in all possibly relevant environment variables
os.environ['OMP_NUM_THREADS'] = str(n_threads)
os.environ['OPENBLAS_NUM_THREADS'] = str(n_threads)
os.environ['MKL_NUM_THREADS'] = str(n_threads)
os.environ['VECLIB_NUM_THREADS'] = str(n_threads)
os.environ['NUMEXPR_NUM_THREADS'] = str(n_threads)def set_numpy_threads(n_threads):
""" Set the number of threads numpy exposes to its
underlying linalg library.
This needs to be called BEFORE the numpy import and sets the number
of threads statically.
Based on answers in https://github.com/numpy/numpy/issues/11826.
"""
# set number of threads for mkl if it is used
try:
import mkl
mkl.set_num_threaads(n_threads)
except Exception:
pass
for name in ['libmkl_rt.so', 'libmkl_rt.dylib', 'mkl_Rt.dll']:
try:
mkl_rt = ctypes.CDLL(name)
mkl_rt.mkl_set_num_threads(ctypes.byref(ctypes.c_int(n_threads)))
except Exception:
pass
# set number of threads in all possibly relevant environment variables
os.environ['OMP_NUM_THREADS'] = str(n_threads)
os.environ['OPENBLAS_NUM_THREADS'] = str(n_threads)
os.environ['MKL_NUM_THREADS'] = str(n_threads)
os.environ['VECLIB_NUM_THREADS'] = str(n_threads)
os.environ['NUMEXPR_NUM_THREADS'] = str(n_threads)mkl
Intel® oneAPI Math Kernel Library
MPL-2.0
Latest version published 3 days ago