How to handle "compute MAC error"?

[pzSuen]

Thanks for your code.

I test my own model by the code you provide in speed_test.py, but I encounter this problem.

https://github.com/youweiliang/evit/blob/97e58f610c51d4b74a070341739e41647dced32c/speed_test.py#L106

What's the reason for it? How to deal with it?