Speed difference between Python and C++

[Sinister MJ]

C++ code: http://pastebin.com/AFezksCY
Python code: http://pastebin.com/HkGFynSW

Both codes have the same output, the same input, but the speed difference is drastic, the whole code needs about 10s in total for Python to run, while my C++ code takes 65s on net.forward() alone.

How does this happen? Its x64 Release mode, with all optimization turned on (CPU_ONLY mode in either case), so I would expect them both to have around the same runtime, yet my C++ is a lot slower.

[kyodaisuki]

Hi, Sinister MJ

I have the same problem,and did you solve it ?

thank you.

Sinister MJ於 2016年9月13日星期二 UTC+8下午5時11分41秒寫道：