59 lines
1.9 KiB
Python
59 lines
1.9 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 abc import ABC, abstractmethod
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class ClusterEnvironment(ABC):
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""" Specification of a cluster environment. """
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@abstractmethod
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def creates_children(self) -> bool:
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""" Whether the environment creates the subprocesses or not. """
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@abstractmethod
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def master_address(self) -> str:
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""" The master address through which all processes connect and communicate. """
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@abstractmethod
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def master_port(self) -> int:
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""" An open and configured port in the master node through which all processes communicate. """
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@abstractmethod
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def world_size(self) -> int:
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""" The number of processes across all devices and nodes. """
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@abstractmethod
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def set_world_size(self, size: int) -> None:
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pass
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@abstractmethod
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def global_rank(self) -> int:
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""" The rank (index) of the currently running process across all nodes and devices. """
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@abstractmethod
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def set_global_rank(self, rank: int) -> None:
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pass
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@abstractmethod
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def local_rank(self) -> int:
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""" The rank (index) of the currently running process inside of the current node. """
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@abstractmethod
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def node_rank(self) -> int:
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""" The rank (index) of the node on which the current process runs. """
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def teardown(self) -> None:
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""" Clean up any state set after execution finishes. """
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pass
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