80 lines
2.6 KiB
Python
80 lines
2.6 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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import os
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import re
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from pytorch_lightning import _logger as log
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from pytorch_lightning.cluster_environments.cluster_environment import ClusterEnvironment
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class SLURMEnvironment(ClusterEnvironment):
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def __init__(self):
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super().__init__()
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def master_address(self):
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# figure out the root node addr
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try:
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root_node = os.environ["SLURM_NODELIST"].split(" ")[0]
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except Exception:
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root_node = "127.0.0.1"
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root_node = self._resolve_root_node_address(root_node)
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os.environ["MASTER_ADDR"] = root_node
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log.debug(f"MASTER_ADDR: {os.environ['MASTER_ADDR']}")
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return root_node
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def master_port(self):
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# -----------------------
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# SLURM JOB = PORT number
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# -----------------------
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# this way every process knows what port to use
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try:
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# use the last 4 numbers in the job id as the id
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default_port = os.environ["SLURM_JOB_ID"]
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default_port = default_port[-4:]
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# all ports should be in the 10k+ range
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default_port = int(default_port) + 15000
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except Exception:
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default_port = 12910
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# -----------------------
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# PORT NUMBER = MASTER_PORT
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# -----------------------
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# in case the user passed it in
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try:
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default_port = os.environ["MASTER_PORT"]
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except Exception:
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os.environ["MASTER_PORT"] = str(default_port)
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log.debug(f"MASTER_PORT: {os.environ['MASTER_PORT']}")
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return default_port
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def world_size(self):
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return self._world_size
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def _resolve_root_node_address(self, root_node):
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if '[' in root_node:
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name, numbers = root_node.split('[', maxsplit=1)
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number = numbers.split(',', maxsplit=1)[0]
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if '-' in number:
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number = number.split('-')[0]
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number = re.sub('[^0-9]', '', number)
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root_node = name + number
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return root_node
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