540336edc9
### What this PR does / why we need it?
Add two custom kernels(bgmv_shrink and bgmv expand) to solve the
performance of LoRA
### Does this PR introduce _any_ user-facing change?
no user-facing change
### How was this patch tested?
we add Unit Test file to test the custom ascendc kernel. See
vllm-ascend/tests/e2e/singlecard/ops/test_bgmv_expand.py and
vllm-ascend/tests/e2e/singlecard/ops/test_bgmv_expand.py
Based on the actual test of the QWen2.5 7B model using vllm-ascend
version v0.9.2.rc1, the TTFT, TPOT and throughput have increased by
about 70%.
- vLLM version: v0.9.2
- vLLM main:
40d86ee412
---------
Signed-off-by: taoxudonghaha <justsheldon@163.com>
113 lines
3.9 KiB
Python
113 lines
3.9 KiB
Python
#
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# Copyright (c) 2025 Huawei Technologies Co., Ltd. All Rights Reserved.
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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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import torch
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def bgmv_shrink(inputs: torch.Tensor,
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lora_a_weights: torch.Tensor,
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output_tensor: torch.Tensor,
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lora_indices_tensor: torch.Tensor,
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scaling: float = 1.0):
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return torch.ops._C.bgmv_shrink(
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inputs,
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lora_a_weights,
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lora_indices_tensor,
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output_tensor,
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scaling,
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)
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def bgmv_expand(inputs: torch.Tensor,
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lora_b_weights: torch.Tensor,
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output_tensor: torch.Tensor,
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lora_indices_tensor: torch.Tensor,
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add_inputs: bool = True):
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return torch.ops._C.bgmv_expand(
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inputs,
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lora_b_weights,
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lora_indices_tensor,
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output_tensor,
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0,
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output_tensor.size(1),
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)
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def bgmv_expand_slice(inputs: torch.Tensor,
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lora_b_weights: torch.Tensor,
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output_tensor: torch.Tensor,
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lora_indices_tensor: torch.Tensor,
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slice_offset: int,
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slice_size: int,
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add_inputs: bool = True):
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return torch.ops._C.bgmv_expand(inputs, lora_b_weights,
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lora_indices_tensor, output_tensor,
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slice_offset, slice_size)
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def sgmv_shrink(
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inputs: torch.Tensor,
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lora_a_weights: torch.Tensor,
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output_tensor: torch.Tensor,
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b_seq_start_loc: torch.Tensor,
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seq_len_tensor: torch.Tensor,
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lora_indices_tensor: torch.Tensor,
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batches: int,
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max_seq_length: int,
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token_nums: int,
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scaling: float,
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):
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exploded_indices = torch.repeat_interleave(lora_indices_tensor,
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seq_len_tensor)
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bgmv_shrink(inputs, lora_a_weights, output_tensor, exploded_indices,
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scaling)
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def sgmv_expand(inputs: torch.Tensor,
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lora_b_weights: torch.Tensor,
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output_tensor: torch.Tensor,
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b_seq_start_loc: torch.Tensor,
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seq_len_tensor: torch.Tensor,
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lora_indices_tensor: torch.Tensor,
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batches: int,
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max_seq_length: int,
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token_nums: int,
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add_inputs: bool = False):
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exploded_indices = torch.repeat_interleave(lora_indices_tensor,
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seq_len_tensor)
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bgmv_expand(inputs, lora_b_weights, output_tensor, exploded_indices,
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add_inputs)
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def sgmv_expand_slice(inputs: torch.Tensor,
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lora_b_weights: torch.Tensor,
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output_tensor: torch.Tensor,
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b_seq_start_loc: torch.Tensor,
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seq_len_tensor: torch.Tensor,
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lora_indices_tensor: torch.Tensor,
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batches: int,
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max_seq_length: int,
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token_nums: int,
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slice_offset: int,
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slice_size: int,
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add_inputs: bool = False):
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exploded_indices = torch.repeat_interleave(lora_indices_tensor,
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seq_len_tensor)
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bgmv_expand_slice(inputs, lora_b_weights, output_tensor, exploded_indices,
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slice_offset, slice_size, add_inputs)
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