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CollectiveCommTask -> OverlappedExecutionStream
Offload collective communication operations (such as All-Gather) from compute units to system DMA engines to execute transfers concurrently with computation.
Problem it solves
Collective communication blocks active GPU compute units, leading to execution stalls during model-parallel training.
Consumes
Emits
The real projects this mechanism was found in. Attribution is the point — this is how the best teams actually do it.