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fix bug when max_seqs=14 in mtp=2 scenario and raise error when cudagraph_capture_sizes can't be an integer multiple of uniform_decode_query_len (#3909)

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### What this PR does / why we need it?
1. Revert [bugfix for mtp in
fullgraph](0948483642)
and support it when vllm supports
2. raise error when cudagraph_capture_sizes can't be an integer multiple
of uniform_decode_query_len
3. bugfix when max_num_seqs=14 in mtp=2 scenario

---------

Signed-off-by: zouyida2052 <zouyida2002@gmail.com>
This commit is contained in:
zouyida2052
2025-10-31 09:25:06 +08:00
committed by GitHub
parent 387ce1cc5b
commit 90aca84e60
4 changed files with 59 additions and 54 deletions
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17
vllm_ascend/worker/model_runner_v1.py
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@@ -3529,8 +3529,23 @@ class NPUModelRunner(LoRAModelRunnerMixin):
if aclgraph_mode.decode_mode() == CUDAGraphMode.FULL and \
aclgraph_mode.separate_routine():
max_num_tokens = self.scheduler_config.max_num_seqs * \
self.uniform_decode_query_len
decode_cudagraph_batch_sizes = [
x for x in self.aclgraph_batch_sizes if x <= max_num_tokens
and x >= self.uniform_decode_query_len
]
compilation_cases_decode = list(
reversed(self.aclgraph_batch_sizes))
reversed(decode_cudagraph_batch_sizes))
if not all(x % self.uniform_decode_query_len == 0
for x in decode_cudagraph_batch_sizes):
raise ValueError(
"In the MTP fullgraph scenario, each graph size must be an integer multiple of "
f"(num_speculative_tokens + 1): {self.uniform_decode_query_len}. "
f"Please modify the cudagraph_capture_sizes variable to be integer multiple of {self.uniform_decode_query_len}, "
f"while ensuring the maximum cudagraph_capture_sizes does not exceed max_num_seqs * (num_speculative_tokens + 1): {max_num_tokens}. "
"For example, with MTP=2 and max_num_seqs=16, we recommend setting cudagraph_capture_sizes to [48]."
)
self._capture_aclgraphs(
compilation_cases=compilation_cases_decode,
aclgraph_runtime_mode=CUDAGraphMode.FULL,