31 lines
1 KiB
Python
31 lines
1 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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# Copyright (c) 2018, NVIDIA CORPORATION. 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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import os
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import horovod.tensorflow as hvd
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def is_using_hvd():
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return hvd.size() > 1
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rank_env = ['HOROVOD_RANK', 'OMPI_COMM_WORLD_RANK', 'PMI_RANK']
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size_env = ['HOROVOD_SIZE', 'OMPI_COMM_WORLD_SIZE', 'PMI_SIZE']
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for r_var, s_var in zip(rank_env, size_env):
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if r_var in os.environ and s_var in os.environ:
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return int(s_var) > 1
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return False
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