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.ceil([0.2, 0.5, 0.6, 0.9, -10.2, -10.5, -10.9]) ss= tf.Session(config=config) print(ss.run(a))