Files
xc-llm-ascend/vllm_ascend/patch/worker/patch_bert.py
lianyibo e32014ac1d [Model] Support pooling models (#3122)
### What this PR does / why we need it?

Support pooling models (like `bge-reranker-v2-m3`) in vllm-ascend, this
pr covered the three model types of embed (cls_token, mean_token,
lasttoken).

After this
[commit](17373dcd93),
vllm has provided support for adapting pooling models on the v1 engine.
This PR includes corresponding adaptations on the vllm-ascend side.

Fixes #1960

- vLLM version: v0.12.0
- vLLM main:
ad32e3e19c

---------

Signed-off-by: lianyibo <lianyibo1@kunlunit.com>
Signed-off-by: MengqingCao <cmq0113@163.com>
Co-authored-by: MengqingCao <cmq0113@163.com>
2025-12-10 11:37:57 +08:00

46 lines
1.5 KiB
Python

#
# Copyright (c) 2025 Huawei Technologies Co., Ltd. All Rights Reserved.
# This file is a part of the vllm-ascend project.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
import torch
from vllm.model_executor.models import bert
# aclgraph does not support shift operator for now
# TODO: revert me when aclgraph supports shift operator
TOKEN_TYPE_SHIFT = 30
TOKEN_TYPE_MULTIPLIER = 1 << 30
TOKEN_MASK = TOKEN_TYPE_MULTIPLIER - 1
def _encode_token_type_ids(input_ids: torch.Tensor,
token_type_ids: torch.Tensor) -> None:
# input_ids can be padded to the right
input_ids[:token_type_ids.shape[0]].bitwise_or_(token_type_ids *
TOKEN_TYPE_MULTIPLIER)
def _decode_token_type_ids(input_ids: torch.Tensor) -> torch.Tensor:
token_type_ids = input_ids // TOKEN_TYPE_MULTIPLIER
input_ids.bitwise_and_(TOKEN_MASK)
return token_type_ids
bert._encode_token_type_ids = _encode_token_type_ids
bert._decode_token_type_ids = _decode_token_type_ids