mirror of
https://github.com/PaddlePaddle/FastDeploy.git
synced 2025-10-31 20:02:53 +08:00
89 lines
3.1 KiB
Python
89 lines
3.1 KiB
Python
"""
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# Copyright (c) 2025 PaddlePaddle Authors. 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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"""
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import paddle
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from paddle import nn
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from paddleformers.utils.log import logger
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from fastdeploy.config import FDConfig, LoadConfig, ModelConfig
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from fastdeploy.model_executor.load_weight_utils import (
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load_composite_checkpoint,
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measure_time,
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)
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from fastdeploy.model_executor.model_loader.base_loader import BaseModelLoader
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from fastdeploy.model_executor.model_loader.utils import get_pretrain_cls
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from fastdeploy.model_executor.models.model_base import ModelRegistry
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from fastdeploy.platforms import current_platform
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class DefaultModelLoader(BaseModelLoader):
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"""ModelLoader that can load registered models"""
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def __init__(self, load_config: LoadConfig):
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super().__init__(load_config)
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logger.info("Load the model and weights using DefaultModelLoader")
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def download_model(self, model_config: ModelConfig) -> None:
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"""download_model"""
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pass
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def clean_memory_fragments(self, state_dict: dict) -> None:
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"""clean_memory_fragments"""
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if current_platform.is_cuda():
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if state_dict:
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for k, v in state_dict.items():
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if isinstance(v, paddle.Tensor):
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v.value().get_tensor()._clear()
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paddle.device.cuda.empty_cache()
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paddle.device.synchronize()
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@measure_time
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def load_weights(self, model, fd_config: FDConfig, architectures: str) -> None:
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model_class = get_pretrain_cls(architectures)
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state_dict = load_composite_checkpoint(
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fd_config.model_config.model,
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model_class,
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fd_config,
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return_numpy=True,
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)
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model.set_state_dict(state_dict)
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self.clean_memory_fragments(state_dict)
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def load_model(self, fd_config: FDConfig) -> nn.Layer:
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context = paddle.LazyGuard()
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architectures = fd_config.model_config.architectures[0]
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logger.info(f"Starting to load model {architectures}")
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if fd_config.load_config.dynamic_load_weight:
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# register rl model
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import fastdeploy.rl # noqa
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architectures = architectures + "RL"
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with context:
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model_cls = ModelRegistry.get_class(architectures)
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model = model_cls(fd_config)
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model.eval()
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# RL model not need set_state_dict
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if fd_config.load_config.dynamic_load_weight:
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return model
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# TODO(gongshaotian): Now, only support safetensor
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self.load_weights(model, fd_config, architectures)
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return model
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