[Perf] Improve Llama4 performance for small max_seqlen cases

Signed-off-by: Yilin Fan <[email protected]>

Author: nv-yilinf

tensorrt_llm/_torch/models/modeling_llama.py

@@ -77,7 +77,7 @@ def __init__(
         else:
             # Disable chunked attention when max_seq_len is smaller than attention_chunk_size
             # TODO: Remove this after all attention kernels in TRTLLM backend support chunked attention
-            if attention_chunk_size and model_config.max_seq_len and model_confg.max_seq_len < attention_chunk_size:
+            if attention_chunk_size and model_config.max_seq_len and model_config.max_seq_len < attention_chunk_size:
                 attention_chunk_size = None
 
         super().__init__(