75 lines
2.7 KiB
Python
75 lines
2.7 KiB
Python
# Copyright 2024 Bytedance Ltd. and/or its affiliates
|
|
# Copyright 2023 The vLLM team.
|
|
# 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.
|
|
# Adapted from https://github.com/vllm-project/vllm/blob/main/vllm/model_executor/layers/linear.py
|
|
|
|
from typing import Optional, Tuple
|
|
|
|
from megatron.core import tensor_parallel
|
|
|
|
|
|
class QKVParallelLinear(tensor_parallel.ColumnParallelLinear):
|
|
|
|
def __init__(self,
|
|
input_size,
|
|
num_heads,
|
|
num_key_value_heads,
|
|
head_dim,
|
|
*,
|
|
bias=True,
|
|
gather_output=True,
|
|
skip_bias_add=False,
|
|
**kwargs):
|
|
# Keep input parameters, and already restrict the head numbers
|
|
self.input_size = input_size
|
|
self.q_output_size = num_heads * head_dim
|
|
self.kv_output_size = num_key_value_heads * head_dim
|
|
self.head_dim = head_dim
|
|
self.gather_output = gather_output
|
|
self.skip_bias_add = skip_bias_add
|
|
|
|
input_size = self.input_size
|
|
output_size = (num_heads + 2 * num_key_value_heads) * self.head_dim
|
|
|
|
super().__init__(input_size=input_size,
|
|
output_size=output_size,
|
|
bias=bias,
|
|
gather_output=gather_output,
|
|
skip_bias_add=skip_bias_add,
|
|
**kwargs)
|
|
|
|
|
|
class MergedColumnParallelLinear(tensor_parallel.ColumnParallelLinear):
|
|
|
|
def __init__(self,
|
|
input_size,
|
|
gate_ouput_size,
|
|
up_output_size,
|
|
*,
|
|
bias=True,
|
|
gather_output=True,
|
|
skip_bias_add=False,
|
|
**kwargs):
|
|
# Keep input parameters, and already restrict the head numbers
|
|
self.input_size = input_size
|
|
self.output_size = gate_ouput_size + up_output_size
|
|
self.gather_output = gather_output
|
|
self.skip_bias_add = skip_bias_add
|
|
|
|
super().__init__(input_size=self.input_size,
|
|
output_size=self.output_size,
|
|
bias=bias,
|
|
gather_output=gather_output,
|
|
skip_bias_add=skip_bias_add,
|
|
**kwargs)
|