import tensorflow as tf;

a = tf.constant([1.0, 2.0, 3.0, 4.0, 5.0, 6.0], shape=[2, 3], name='a');
b = tf.constant([1.0, 2.0, 3.0, 4.0, 5.0, 6.0], shape=[3, 2], name='b');
c = tf.matmul(a, b);

s = tf.Session(config=tf.ConfigProto(log_device_placement=True));
print(s.run(c));