[FRONTEND] Fix pytorch warning. (#560)
[FRONTEND] Fix pytorch warning. (#560)

UserWarning: __floordiv__ is deprecated, and its behavior will change in a future version of pytorch. It currently rounds toward 0 (like the 'trunc' function NOT 'floor'). This results in incorrect rounding for negative values. To keep the current behavior, use torch.div(a, b, rounding_mode='trunc').
openai/triton,openai/triton