some question anbout hardware multicast in switch

Infrastructure & Networking Switches and Gateways
1

IB switch can support hardware multicast, there is one sender and N receiver, is sender send one time and switch copy N times?

I want to start IB multicast use IB switch, but i don’t know the detailed information about how to copy data in the switch?

2

For MC detail , you can refer IB spec vol 1, Chap 3.5.11

There is detail for how MC work

Thanks