[mpich-discuss] MPI broadcast question

[YANG Fan]

Hi,

I learnt that MPI does broadcast with some tree-based hierarchical
communication, which result in O(log p) latency, where p is the number of
processes. However, I'm thinking that if I do the broadcast naively(send to
all receivers simultaneously), seems that conceptually the latency can be
reduced to O(1).

Does the above make sense? Thanks!

Best Regards,
Fan
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