Files
Tyler Michael SmithandClaude Opus 4.6 5a766bf3de Refactor DeepEP v2 for cudagraph compatibility and simplified DBO
- Remove explicit two-stream DBO switching (dbo_yield_and_switch_*),
  use synchronous dispatch/combine (async_with_compute_stream=False).
  The ElasticBuffer handles comm internally on its comm_stream.
- Switch from do_expand=True to do_expand=False for cudagraph compat.
  do_expand=True requires do_cpu_sync=True (CPU polling loop) which
  can't be captured in a cudagraph. do_expand=False with do_cpu_sync=False
  is fully capturable.
- Handle worst-case padding from do_cpu_sync=False: use
  handle.psum_num_recv_tokens_per_scaleup_rank to get real token count,
  zero out padding rows in recv_x, recv_topk_weights, and expert_x_scale.
- Add explicitly_destroy=True to ElasticBuffer creation in all2all.py.
- Add cudagraph capture/replay unit test (test_deep_ep_v2_moe_cudagraph).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Signed-off-by: Tyler Michael Smith <tlrmchlsmth@gmail.com>
2026-04-30 21:51:16 -04:00
..
2026-04-16 13:06:01 -07:00