What to take RoCE or IB

Hello! I develop software with advantage of RDMA, so i search a lot of information about comparison, but didn’t find anything other then latency, and in even in different articles latency values are different.
So, my main question is, what features IB has in comparison with RoCE. I do not discuss hw, i understand, that hw are different.
And I understand, that both have SEND, RDMA READ, RDMA WRITE support.
Thanks!

Main different stability on large scale net, IB more stable on keep latency/bandwidth etc, RoCE need congestion control to keep stable.

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