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[misc] update tpu int8 to use new vLLM Parameters (#7973)

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Dipika Sikka 2024-08-29 16:46:55 -04:00 committed by GitHub
parent d78789ac16
commit 86a677de42
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2 changed files with 13 additions and 11 deletions
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3
vllm/model_executor/layers/linear.py
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@ -23,7 +23,8 @@ logger = init_logger(__name__)
WEIGHT_LOADER_V2_SUPPORTED = [ WEIGHT_LOADER_V2_SUPPORTED = [
"CompressedTensorsLinearMethod", "AWQMarlinLinearMethod", "CompressedTensorsLinearMethod", "AWQMarlinLinearMethod",
"AWQLinearMethod", "GPTQMarlinLinearMethod", "Fp8LinearMethod", "AWQLinearMethod", "GPTQMarlinLinearMethod", "Fp8LinearMethod",
"MarlinLinearMethod", "QQQLinearMethod", "GPTQMarlin24LinearMethod" "MarlinLinearMethod", "QQQLinearMethod", "GPTQMarlin24LinearMethod",
"TPUInt8LinearMethod"
] ]

17
vllm/model_executor/layers/quantization/tpu_int8.py
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@ -7,7 +7,7 @@ from torch.nn.parameter import Parameter
from vllm.model_executor.layers.linear import LinearBase, LinearMethodBase from vllm.model_executor.layers.linear import LinearBase, LinearMethodBase
from vllm.model_executor.layers.quantization.base_config import ( from vllm.model_executor.layers.quantization.base_config import (
QuantizationConfig) QuantizationConfig)
from vllm.model_executor.utils import set_weight_attrs from vllm.model_executor.parameter import ModelWeightParameter
ACTIVATION_SCHEMES = ["none"] ACTIVATION_SCHEMES = ["none"]
@ -64,16 +64,16 @@ class TPUInt8LinearMethod(LinearMethodBase):
output_partition_sizes: List[int], input_size: int, output_partition_sizes: List[int], input_size: int,
output_size: int, params_dtype: torch.dtype, output_size: int, params_dtype: torch.dtype,
**extra_weight_attrs): **extra_weight_attrs):
weight = Parameter(torch.empty(sum(output_partition_sizes),
weight_loader = extra_weight_attrs.get("weight_loader")
weight = ModelWeightParameter(data=torch.empty(
sum(output_partition_sizes),
input_size_per_partition, input_size_per_partition,
dtype=params_dtype), dtype=params_dtype),
requires_grad=False) input_dim=1,
output_dim=0,
weight_loader=weight_loader)
layer.register_parameter("weight", weight) layer.register_parameter("weight", weight)
set_weight_attrs(weight, {
**extra_weight_attrs,
"input_dim": 1,
"output_dim": 0,
})
def _quantize_weight( def _quantize_weight(
self, weight: torch.Tensor) -> Tuple[torch.Tensor, torch.Tensor]: self, weight: torch.Tensor) -> Tuple[torch.Tensor, torch.Tensor]:
@ -92,6 +92,7 @@ class TPUInt8LinearMethod(LinearMethodBase):
return qweight, qscale return qweight, qscale
def process_weights_after_loading(self, layer: Module) -> None: def process_weights_after_loading(self, layer: Module) -> None:
layer.weight = Parameter(layer.weight.data, requires_grad=False)
device = layer.weight.device device = layer.weight.device
qweight, qscale = self._quantize_weight(layer.weight) qweight, qscale = self._quantize_weight(layer.weight)
qweight = qweight.to(device) qweight = qweight.to(device)