adamsolomou / sc-dnn Goto Github PK
View Code? Open in Web Editor NEWStochastic Computing for Deep Neural Networks
License: MIT License
Stochastic Computing for Deep Neural Networks
License: MIT License
Hi~, I am very grateful for the code you shared, it worked very well and helped me a lot.
But I found a small problem, which may cause the program to output unexpected results (NAN)
In SC-DNN/src/training/sc_train_creg.py
The variable gain
is randomly initialized and used in subsequent calculations (in tf.div
)
lo_matmul = {
'upscale': True,
'gain': tf.get_variable(name="G_matmul_2",
initializer=tf.random_uniform([n_classes],minval=0,maxval=16))
}
# ......
if(upscale):
z_upscaled = tf.multiply(z,gain)
new_scale = tf.div(curr_scale,gain)
else:
z_upscaled = z
new_scale = curr_scale
However, when the variable gain
unfortunately gets 0
in the process of random initialization, there would be a division by zero operation in tf.div(curr_scale,gain)
. This is illegal and will eventually cause the program to output NaN
Maybe it's better if we added a small constant (1e-7) to tf.div(curr_scale,gain)
to avoid division by zero? Just like: tf.div(curr_scale,gain + 1e-7)
Or setting minval=1e-7
in the initialization of gain
Looking forward to receiving your reply~
Thanks in advance!
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