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[V1] Simpify vision block hash for prefix caching by removing offset from hash (#11646)

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Chen Zhang 2024-12-31 16:56:01 +08:00 committed by GitHub
parent 2c5718809b
commit 8c3230d8c1
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2 changed files with 6 additions and 6 deletions
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8
tests/v1/core/test_prefix_caching.py
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@ -469,9 +469,9 @@ def test_mm_prefix_caching():
# Completed block should have hashes with extra keys.
assert not computed_blocks
assert len(req0.kv_block_hashes) == 3
assert req0.kv_block_hashes[0].extra_keys == (("aaa", 0), )
assert req0.kv_block_hashes[1].extra_keys == (("aaa", 5), ("bbb", 0))
assert req0.kv_block_hashes[2].extra_keys == (("bbb", 2), )
assert req0.kv_block_hashes[0].extra_keys == ("aaa", )
assert req0.kv_block_hashes[1].extra_keys == ("aaa", "bbb")
assert req0.kv_block_hashes[2].extra_keys == ("bbb", )
blocks = manager.allocate_slots(req0, 59, computed_blocks)
assert [b.block_id for b in blocks] == [0, 1, 2, 3, 4]
@ -485,7 +485,7 @@ def test_mm_prefix_caching():
# The just completed block should have hashes with extra keys.
assert len(req0.kv_block_hashes) == 4
assert req0.kv_block_hashes[3].extra_keys == (("ccc", 0), )
assert req0.kv_block_hashes[3].extra_keys == ("ccc", )
# Cache hit.
unique_token_ids = [-1] * 7 + [200] * 5

4
vllm/v1/core/kv_cache_utils.py
View File

@ -218,8 +218,8 @@ def generate_block_hash_extra_keys(
continue
# The block contains the current mm input.
mm_start = max(0, start_token_idx - offset)
extra_keys.append((mm_hashes[curr_mm_idx], mm_start))
extra_keys.append(mm_hashes[curr_mm_idx])
if end_token_idx >= offset + length:
# If this block contains the end of the current mm input,
# move to the next mm input as this block may also contain