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Signed-off-by: Woosuk Kwon <woosuk.kwon@berkeley.edu>
This commit is contained in:
Woosuk Kwon 2025-01-01 18:42:22 -08:00
parent 1260e43230
commit ba64a0249f
1 changed files with 9 additions and 2 deletions
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11
vllm/v1/worker/gpu_block_table.py
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@ -38,9 +38,10 @@ class BlockTable:
pin_memory=pin_memory,
)
self.block_table_np = self.block_table_cpu.numpy()
self.num_blocks_per_row = np.zeros((max_num_reqs,), dtype=np.int32)
# UVA requires pinned memory.
self.use_uva = is_uva_available() and pin_memory
self.use_uva = is_uva_available() and pin_memory and False
if self.use_uva:
logger.info("Using Unified Virtual Addressing (UVA) for block "
"table transfer.")
@ -62,6 +63,7 @@ class BlockTable:
def add_row(self, row_idx: int, block_ids: List[int]) -> None:
num_blocks = len(block_ids)
self.block_table_np[row_idx, :num_blocks] = block_ids
self.num_blocks_per_row[row_idx] = num_blocks
if self.use_uva:
self.block_table_diff_np[row_idx, 0] = 0
self.block_table_diff_np[row_idx, 1] = num_blocks
@ -74,6 +76,7 @@ class BlockTable:
) -> None:
num_blocks = len(block_ids)
self.block_table_np[row_idx, start:start + num_blocks] = block_ids
self.num_blocks_per_row[row_idx] = start + num_blocks
if self.use_uva:
self.block_table_diff_np[row_idx, 0] = start
# Move-and-append is not allowed.
@ -81,7 +84,10 @@ class BlockTable:
self.block_table_diff_np[row_idx, 1] = num_blocks
def move_row(self, src: int, tgt: int) -> None:
self.block_table_np[tgt] = self.block_table_np[src]
num_blocks = self.num_blocks_per_row[src]
self.block_table_np[tgt, :num_blocks] = \
self.block_table_np[src, :num_blocks]
self.num_blocks_per_row[tgt] = num_blocks
if self.use_uva:
# Append-and-move is allowed.
self.block_table_diff_np[tgt] = self.block_table_diff_np[src]
@ -108,6 +114,7 @@ class BlockTable:
def clear(self) -> None:
self.block_table.fill_(0)
self.block_table_cpu.fill_(0)
self.num_blocks_per_row.fill(0)
if self.use_uva:
self.block_table_diff.fill_(0)