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Allow larger max num dispatch tokens per rank for DeepEP #11168

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Allow larger max num dispatch tokens per rank for DeepEP #11168

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84571c2
Update deepep.py
fzyzcjy Oct 2, 2025
8f42617
Update deepep.py
fzyzcjy Oct 2, 2025
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6 changes: 4 additions & 2 deletions python/sglang/srt/layers/moe/token_dispatcher/deepep.py
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Original file line number Diff line number Diff line change
Expand Up @@ -291,9 +291,11 @@ def __init__(
self.num_max_dispatch_tokens_per_rank = get_int_env_var(
"SGLANG_DEEPEP_NUM_MAX_DISPATCH_TOKENS_PER_RANK", 128
)
# DeepEP internode_ll dispatch uses FINISHED_SUM_TAG=1024
# DeepEP internode_ll dispatch uses FINISHED_SUM_TAG=2048
# and the logic requires num-tokens-sent-from-one-rank-to-another-rank less than it
assert self.num_max_dispatch_tokens_per_rank <= 1024
# related: https://github.com/deepseek-ai/DeepEP/pull/440
DEEPEP_FINISHED_SUM_TAG = 2048
assert self.num_max_dispatch_tokens_per_rank <= DEEPEP_FINISHED_SUM_TAG

self.handle = None

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