97 lines
3.4 KiB
Python
97 lines
3.4 KiB
Python
# Copyright The PyTorch Lightning team.
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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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from pytorch_lightning.cluster_environments import ClusterEnvironment
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from pytorch_lightning.utilities.exceptions import MisconfigurationException
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from pytorch_lightning.plugins.ddp_plugin import DDPPlugin
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from pytorch_lightning.plugins.apex import ApexPlugin
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from pytorch_lightning.plugins.native_amp import NativeAMPPlugin
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from pytorch_lightning.utilities import AMPType
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class PluginConnector:
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def __init__(self, trainer):
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self.trainer = trainer
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self.plugins = []
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self.ddp_plugin = DDPPlugin()
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self.cloud_environment = None
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self.amp_plugin = NativeAMPPlugin(trainer)
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self.apex_plugin = ApexPlugin(trainer)
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def on_trainer_init(self, plugins):
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self.plugins = plugins
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if self.plugins is None:
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self.plugins = []
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self.__attach_ddp()
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self.__attach_cluster()
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self.__attach_amp()
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self.__attach_apex()
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def __attach_amp(self):
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amp_plugin = self.__attach_plugin(NativeAMPPlugin)
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if amp_plugin:
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self.trainer.amp_backend = AMPType.NATIVE
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self.trainer.precision_connector.backend = amp_plugin
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def __attach_apex(self):
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apex_plugin = self.__attach_plugin(ApexPlugin)
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if apex_plugin:
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self.trainer.amp_backend = AMPType.NATIVE
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self.trainer.precision_connector.backend = apex_plugin
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def __attach_plugin(self, plugin_type, limit=1):
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count = 0
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plugin_result = None
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for plugin in self.plugins:
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if isinstance(plugin, plugin_type):
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# count the clusters
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count += 1
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if count > limit:
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m = f'you can only use one {plugin_type.__class__} in plugins. You passed in: {count}'
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raise MisconfigurationException(m)
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plugin_result = plugin
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return plugin_result
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def __attach_ddp(self, limit=1):
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count = 0
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for plugin in self.plugins:
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if isinstance(plugin, DDPPlugin):
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# count the clusters
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count += 1
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if count > limit:
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m = f'you can only use one DDP plugin in plugins. You passed in: {count}'
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raise MisconfigurationException(m)
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# set the ddp plugin
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self.ddp_plugin = plugin
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def __attach_cluster(self, limit=1):
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num_clusters = 0
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for plugin in self.plugins:
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if isinstance(plugin, ClusterEnvironment):
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# count the clusters
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num_clusters += 1
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if num_clusters > limit:
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m = f'you can only use one cluster environment in plugins. You passed in: {num_clusters}'
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raise MisconfigurationException(m)
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# set the cluster
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self.cloud_environment = plugin
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