Add mp spawn

[NanoCode012]

Continue from #7 .

I will look over your code later. It's interesting that spawn is slower. I once expected they would be the same.
which branch are you in now?

I am in feature/mp_spawn branch.

Is it withn random fluctuation range? I am not quite sure

I am not sure. I am considering testing the feature/ddp_fixed branch again to see how much it varies.

I will look over your code later. It's interesting that spawn is slower. I once expected they would be the same.

Yep. Please do.

If spawn still creates a +5% gap, I think we should stick with launch

Edit:

New issue in main repo

Okay! You can create it then mention me.