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[PD] Optimize transfer queue forward logic for dummy rank #6922

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Merged
zhyncs merged 1 commit into from
Jun 7, 2025
Merged

[PD] Optimize transfer queue forward logic for dummy rank #6922

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7 changes: 6 additions & 1 deletion python/sglang/srt/disaggregation/mooncake/conn.py
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Original file line number Diff line number Diff line change
Expand Up @@ -562,6 +562,12 @@ def add_transfer_request(
)
return

if bootstrap_room not in self.transfer_infos:
# This means that the current rank is a dummy rank for this request,
# and it has already been marked as success, so there is no need to
# add further chunks into the transfer queue.
return

# NOTE(shangming): sharding according to the dst_infos to make sure
# requests with the same dst_sessions will be added into the same
# queue, which enables early abort with failed sessions.
Expand All @@ -578,7 +584,6 @@ def add_transfer_request(
prefill_aux_index=aux_index,
)
)
self.update_status(bootstrap_room, KVPoll.WaitingForInput)

def check_status(self, bootstrap_room: int):
return self.request_status[bootstrap_room]
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