finetuning RealESRGAN_x4plus.pth input size issue

[ahsteven]

It seems the input size of RealESRGAN_x4plus.pth is 1024 however if my input images are this size I get cuda out of memory. How is this supposed to work using the sub image crops?

I need to have smaller input images if I dont want to run out of gpu memory during training but the input size seems to require 1024. How to handle this?