Hi All.
I just wonder that which of allgatherv and reduce_scatter is faster?
Basically, they deal with same amout of data but in opposite way.
In my experience, reduce_scatter is much slower that allgatherv.
I don't know how they work differently in implementation level.
Can anybody help me understand the speed difference of allgatherv and
reduce_scatter?
Thank you so much
Byungchan Kim
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