Qinghua Zhou c51a8a5305 ext/ep tests: time dispatch and combine separately in MSCCLPP_EP_BENCH ...

Previously the optional benchmark measured full round-trip latency. Split
it to time dispatch alone (N iters) and combine alone (N iters reusing
one dispatch output), reporting per-phase latency (max across ranks) and
aggregate effective bandwidth (sum across ranks).

Applies to intranode HT, internode HT, and the (currently unreachable on
intra-node 8-GPU) LL test. Internode HT keeps the sync+barrier guard
between dispatch and combine but excludes it from either phase's timing.

2026-04-22 23:11:04 +00:00

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ext/ep

ext/ep tests: time dispatch and combine separately in MSCCLPP_EP_BENCH

2026-04-22 23:11:04 +00:00