How to use hash encoder to make it fast?

[YiChenCityU]

Hi, I wonder would it possible to use hash ecoding to acclerate the code. But I found the the gradient

IMavatar/code/model/implicit_morphable_model.py

Line 331 in b7d11d8

grads.append(grad)

always failed. Could you give some advices?

[zhengyuf]

Is this issue still open? If so, please feel free to reopen and provide more details.