Solved by beaupreda in post #2 
              
              
                Hi, 
There is a small mistake in the way you compute num_samples_traversed. Right now, it will always be equal to 320. You need to accumulate print_freq * batch_size like this: 
num_samples_traversed += print_freq * batch_size 
or you could use vatriable i to compute it: 
num_samples_traversed = (i+…