67 lines
2.2 KiB
Python
67 lines
2.2 KiB
Python
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# Copyright (c) Facebook, Inc. and its affiliates.
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# All rights reserved.
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#
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# This source code is licensed under the BSD-style license found in the
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# LICENSE file in the root directory of this source tree.
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from .api import RendezvousHandler, RendezvousParameters
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from .api import rendezvous_handler_registry as handler_registry
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from .dynamic_rendezvous import create_handler
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__all__ = ['get_rendezvous_handler']
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def _create_static_handler(params: RendezvousParameters) -> RendezvousHandler:
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from . import static_tcp_rendezvous
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return static_tcp_rendezvous.create_rdzv_handler(params)
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def _create_etcd_handler(params: RendezvousParameters) -> RendezvousHandler:
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from . import etcd_rendezvous
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return etcd_rendezvous.create_rdzv_handler(params)
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def _create_etcd_v2_handler(params: RendezvousParameters) -> RendezvousHandler:
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from .etcd_rendezvous_backend import create_backend
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backend, store = create_backend(params)
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return create_handler(store, backend, params)
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def _create_c10d_handler(params: RendezvousParameters) -> RendezvousHandler:
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from .c10d_rendezvous_backend import create_backend
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backend, store = create_backend(params)
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return create_handler(store, backend, params)
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def _register_default_handlers() -> None:
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handler_registry.register("etcd", _create_etcd_handler)
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handler_registry.register("etcd-v2", _create_etcd_v2_handler)
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handler_registry.register("c10d", _create_c10d_handler)
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handler_registry.register("static", _create_static_handler)
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def get_rendezvous_handler(params: RendezvousParameters) -> RendezvousHandler:
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"""
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Obtain a reference to a :py:class`RendezvousHandler`.
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Custom rendezvous handlers can be registered by
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::
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from torch.distributed.elastic.rendezvous import rendezvous_handler_registry
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from torch.distributed.elastic.rendezvous.registry import get_rendezvous_handler
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def create_my_rdzv(params: RendezvousParameters):
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return MyCustomRdzv(params)
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rendezvous_handler_registry.register("my_rdzv_backend_name", create_my_rdzv)
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my_rdzv_handler = get_rendezvous_handler("my_rdzv_backend_name", RendezvousParameters)
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"""
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return handler_registry.create_handler(params)
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