Ask about the difference of bandwidth between dispatch and. combine

[kzlxd]

As shown in the figure, the dispatch bandwidth and combine bandwidth of one node exhibit inconsistent performance with another node.

[goelayu]

@kzlxd the dispatch and combine kernels are doing very different operations (apart from the network comms) so that impacts the overall bandwidth of the kernels.

[kzlxd]

@goelayu thanks for your explaining