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80 lines
2.6 KiB
80 lines
2.6 KiB
# Copyright 2024 The HuggingFace Inc. team. 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/lic enses/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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from typing import TYPE_CHECKING
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from .base import HfQuantizer
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if TYPE_CHECKING:
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from ..modeling_utils import PreTrainedModel
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from ..integrations import replace_with_spqr_linear
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from ..utils import is_accelerate_available, is_spqr_available, is_torch_available, logging
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from ..utils.quantization_config import QuantizationConfigMixin
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if is_torch_available():
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import torch
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logger = logging.get_logger(__name__)
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class SpQRHfQuantizer(HfQuantizer):
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"""
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Quantizer of the SpQR method. Enables the loading of prequantized models.
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"""
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requires_calibration = True
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def __init__(self, quantization_config: QuantizationConfigMixin, **kwargs):
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super().__init__(quantization_config, **kwargs)
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def validate_environment(self, *args, **kwargs):
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if not torch.cuda.is_available():
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raise RuntimeError("GPU is required to run SpQR quantized model.")
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if not is_accelerate_available():
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raise ImportError("Using `spqr` quantization requires Accelerate: `pip install accelerate`")
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if not is_spqr_available():
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raise ImportError("Using `spqr` quantization requires SpQR: `pip install spqr_quant[gpu]`")
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def update_dtype(self, dtype: "torch.dtype") -> "torch.dtype":
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if dtype != torch.float16:
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raise ValueError(
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"You cannot use any type other than torch.float16 for SpQR. Please set it totorch.float16 explicitly."
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)
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return dtype
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def _process_model_before_weight_loading(
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self,
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model: "PreTrainedModel",
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**kwargs,
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):
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self.modules_to_not_convert = self.get_modules_to_not_convert(
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model, self.quantization_config.modules_to_not_convert, model._keep_in_fp32_modules
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)
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replace_with_spqr_linear(
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model,
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quantization_config=self.quantization_config,
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modules_to_not_convert=self.modules_to_not_convert,
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)
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@property
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def is_trainable(self):
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return False
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def is_serializable(self):
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return True
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