openmp, mkl에서 1 쓰레드만 사용하도록 하려면, 환경변수 OMP_NUM_THREADS, MKL_NUM_THREADS를 수정 해야함

cmd 창에서

set OMP_NUM_THREADS=1
set MKL_NUM_THREADS=1

또는, python에서

os.environ['OMP_NUM_THREADS'] = '1'
os.environ['MKL_NUM_THREADS'] = '1'

export CUDA_VISIBLE_DEVICES=""
export MKL_DEBUG_CPU_TYPE=5
export MKL_SERIAL=YES; export OMP_NUM_THREADS=1

• https://cupy.chainer.org/
• https://numba.pydata.org/