Support tuning moe for llama 4 model #5109
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# Conflicts: # python/sglang/srt/layers/attention/flashattention_backend.py
This reverts commit ac4cca3.
1. Adds a `use_irope` parameter to the RadixAttention class to indicate whether a layer should use local attention based on iRoPE 2. Modifies Llama4Attention to pass `use_irope=not self.nope` to RadixAttention, leveraging the existing NoPE flag 3. Updates FlashAttentionBackend.forward_extend to check for the `use_irope` flag when determining if local attention should be used 4. Simplifies local attention activation logic by directly checking `attention_chunk_size is not None` instead of using a separate flag
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Motivation
tune outputs will be in #5092, here I only put script updates to avoid making 5092 so big
Modifications
Checklist