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# Creates a graph.

x = 2
y = 3
with tf.device('/cpu:1'):
    add_op = tf.add(x, y,)
    mul_op = tf.multiply(x, y)
    pow_op = tf.pow(add_op, mul_op)

with tf.device('/cpu:2'):
    useless = tf.multiply(x, add_op)


with tf.Session() as sess:
    
    
    # Creates a session with allow_soft_placement and log_device_placement set to True.
    sess = tf.Session(config=tf.ConfigProto(
          allow_soft_placement=True, log_device_placement=True))

    z, not_useless = sess.run([pow_op, useless])
    
print(z)

print(not_useless)