import tensorflow as tf import multiprocessing as mp core_num = mp.cpu_count() config = tf.ConfigProto( inter_op_parallelism_threads=core_num, intra_op_parallelism_threads=core_num ) a = tf.constant(12) b = tf.constant(34) c = tf.mul(a,b) ss= tf.Session(config=config) print(ss.run(c))