Define an op on a tensor. Here's an example:
In [1]:
import tensorflow as tf
x = tf.constant([[1, 2]])
neg_op = tf.negative(x)
Now let's use a session with a special argument passed in.
In [3]:
with tf.Session(config=tf.ConfigProto(log_device_placement=True)) as sess:
result = sess.run(neg_op)
print(result)
Try this from a terminal. Jupyter notebooks won't show the logging info.