c578f817ca
### What this PR does / why we need it?
Register VocabParallelEmbedding instead of overwrite forward
### Does this PR introduce _any_ user-facing change?
N/A
### How was this patch tested?
CI passed with new added/existing test.
- vLLM version: v0.10.1.1
- vLLM main:
644d57d531
---------
Signed-off-by: Icey <1790571317@qq.com>
74 lines
3.2 KiB
Python
74 lines
3.2 KiB
Python
#
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# Copyright (c) 2025 Huawei Technologies Co., Ltd. All Rights Reserved.
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# This file is a part of the vllm-ascend project.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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from typing import Tuple
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import torch
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from vllm.distributed import tensor_model_parallel_all_reduce
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from vllm.model_executor.layers.vocab_parallel_embedding import \
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VocabParallelEmbedding
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class AscendVocabParallelEmbedding(VocabParallelEmbedding):
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def _get_masked_input_and_mask(
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self, input_: torch.Tensor, org_vocab_start_index: int,
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org_vocab_end_index: int, num_org_vocab_padding: int,
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added_vocab_start_index: int,
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added_vocab_end_index: int) -> Tuple[torch.Tensor, torch.Tensor]:
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# torch.compile will fuse all of the pointwise ops below
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# into a single kernel, making it very fast
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org_vocab_mask = (input_ >= org_vocab_start_index) & (
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input_ < org_vocab_end_index)
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# Adapt: avoid create added_vocab_mask when added_vocab_start_index == added_vocab_end_index.
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if added_vocab_start_index == added_vocab_end_index:
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valid_offset = (org_vocab_start_index * org_vocab_mask)
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vocab_mask = org_vocab_mask
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else:
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added_vocab_mask = (input_ >= added_vocab_start_index) & (
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input_ < added_vocab_end_index)
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added_offset = added_vocab_start_index - (
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org_vocab_end_index -
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org_vocab_start_index) - num_org_vocab_padding
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valid_offset = (org_vocab_start_index *
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org_vocab_mask) + (added_offset * added_vocab_mask)
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vocab_mask = org_vocab_mask | added_vocab_mask
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# Adapt end.
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input_ = vocab_mask * (input_ - valid_offset)
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return input_, ~vocab_mask
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def forward(self, input_):
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if self.tp_size > 1:
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# Build the mask.
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masked_input, input_mask = self._get_masked_input_and_mask(
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input_, self.shard_indices.org_vocab_start_index,
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self.shard_indices.org_vocab_end_index,
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self.shard_indices.num_org_vocab_padding,
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self.shard_indices.added_vocab_start_index,
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self.shard_indices.added_vocab_end_index)
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else:
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masked_input = input_
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# Get the embeddings.
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output_parallel = self.quant_method.embedding(self,
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masked_input.long())
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# Mask the output embedding.
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if self.tp_size > 1:
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output_parallel.masked_fill_(input_mask.unsqueeze(-1), 0)
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# Reduce across all the model parallel GPUs.
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output = tensor_model_parallel_all_reduce(output_parallel)
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return output
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