[Scene_Cast2]

The thing I focus on when writing compiled extensions for Python isn't the speed of the extension, but rather the overhead of the call and the overhead of moving objects from Python -> compiled and compiled -> Python.

Is there a zero-copy interface for larger objects? How do object lifetimes work in that case? Especially if this is to be used for ML, you need to haul over huge matrices. And the GIL stuff is also a thing.

I wonder how Mojo handles all that.

[MohamedMabrouk]

AFAIK, there is a zero-copy interface for objects like numpy array and torch tensors where you can do in-place manipulation in mojo.