34 lines
1.2 KiB
Python
34 lines
1.2 KiB
Python
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#
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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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import torch
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import torch.nn as nn
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from vllm.model_executor.layers.rotary_embedding.base import \
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RotaryEmbeddingBase
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class AscendRotaryEmbeddingBase(nn.Module):
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def get_cos_sin(self, seqlen: int) -> tuple[torch.Tensor, torch.Tensor]:
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cos_sin = self.cos_sin_cache[:seqlen]
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cos, sin = cos_sin.chunk(2, dim=-1)
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return cos, sin
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# NOTE: These will be removed after vllm-ascend is aligned with vllm latest main.
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RotaryEmbeddingBase.get_cos_sin = AscendRotaryEmbeddingBase.get_cos_sin
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