Sample during training problem 2

[RainJayAn]

I saw that there was a discussion about this issue before, but it was closed. However, I still have a question to ask.
could you tell me how to go through all the steps from t=1000, ... , 0 to generate a synthetic image？
I just find it in the validation code, but not in the training code.

[RainJayAn]

I guess this is how to go through all the steps, but it only appear to the test code.