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[BugFix] Fix Llama4 - Index Error When Single Request Near Max Context (#16209)

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Signed-off-by: Lucas Wilkinson <lwilkinson@neuralmagic.com>
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Lucas Wilkinson 2025-04-08 14:56:51 -04:00 committed by GitHub
parent 0115ccd5c0
commit e1a2c699dd
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vllm/v1/attention/backends/flash_attn.py
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@ -264,7 +264,7 @@ def make_local_attention_virtual_batches(
np.arange(pages_per_local_batch, dtype=np.int32),
(virtual_batches, pages_per_local_batch)) \
+ np.expand_dims(block_starts, axis=1)
block_indices = block_indices.flatten()
block_indices = block_indices.flatten().clip(max=block_table.shape[1] - 1)
batch_indices = np.repeat(np.arange(actual_batch_size, dtype=np.int32),
local_blocks * pages_per_local_batch)
block_table_local = block_table[batch_indices, block_indices]\