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fix some linter errors for slurm_cluster_resolver.

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PiperOrigin-RevId: 313873815
Change-Id: I15ae65bb27af2ee9d60b3629c91c0234fbc8943f
This commit is contained in:
Yuefeng Zhou 2020-05-29 16:47:03 -07:00 committed by TensorFlower Gardener
parent bacd18849e
commit 3fbd5ac42e
1 changed files with 17 additions and 18 deletions
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35
tensorflow/python/distribute/cluster_resolver/slurm_cluster_resolver.py
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@ -19,8 +19,8 @@ from __future__ import division
from __future__ import print_function
import os
import subprocess
import re
import subprocess
from tensorflow.python.distribute.cluster_resolver.cluster_resolver import ClusterResolver
from tensorflow.python.distribute.cluster_resolver.cluster_resolver import format_master_url
@ -29,7 +29,7 @@ from tensorflow.python.util.tf_export import tf_export
def expand_hostlist(hostlist):
"""Create a list of hosts out of a SLURM hostlist
"""Create a list of hosts out of a SLURM hostlist.
The order of nodes is preserved and no deduplication is done
Input: 'n[1-2],m5,o[3-4,6,7-9]')
@ -37,7 +37,7 @@ def expand_hostlist(hostlist):
"""
def split_hostlist(hostlist):
"""Split hostlist at commas outside of range expressions ('[3-5]')"""
"""Split hostlist at commas outside of range expressions ('[3-5]')."""
in_brackets = False
cur_host = ''
for c in hostlist:
@ -57,7 +57,7 @@ def expand_hostlist(hostlist):
yield cur_host
def expand_range_expression(range_exp):
"""Expand a range expression like '3-5' to values 3,4,5"""
"""Expand a range expression like '3-5' to values 3,4,5."""
for part in range_exp.split(','):
sub_range = part.split('-')
if len(sub_range) == 1:
@ -87,7 +87,7 @@ def expand_hostlist(hostlist):
def expand_tasks_per_node(tasks_per_node):
"""Expand the tasks per node expression from SLURM
"""Expands the tasks per node expression from SLURM.
The order is preserved so it can be matched to the hostlist
Input: '3(x2),2,1'
@ -108,7 +108,7 @@ def expand_tasks_per_node(tasks_per_node):
def _get_slurm_var(name):
"""Get the SLURM variable from the environment
"""Gets the SLURM variable from the environment.
Args:
name: Name of the step variable
@ -126,8 +126,8 @@ def _get_slurm_var(name):
'Not running inside a SLURM step?' % name)
def get_num_slurm_tasks():
"""Return the number of SLURM tasks of the current job step
def _get_num_slurm_tasks():
"""Returns the number of SLURM tasks of the current job step.
Returns:
The number of tasks as an int
@ -136,7 +136,7 @@ def get_num_slurm_tasks():
def _get_num_nvidia_gpus():
"""Get the number of NVIDIA GPUs by using CUDA_VISIBLE_DEVICES and nvidia-smi
"""Gets the number of NVIDIA GPUs by using CUDA_VISIBLE_DEVICES and nvidia-smi.
Returns:
Number of GPUs available on the node
@ -157,9 +157,9 @@ def _get_num_nvidia_gpus():
def get_num_gpus():
"""Return the number of GPUs visible on the current node
"""Returns the number of GPUs visible on the current node.
Currently only implemented for NVIDIA GPUs
Currently only implemented for NVIDIA GPUs.
"""
return _get_num_nvidia_gpus()
@ -176,7 +176,6 @@ class SlurmClusterResolver(ClusterResolver):
used for distributed TensorFlow.
"""
def __init__(self,
jobs=None,
port_base=8888,
@ -276,19 +275,19 @@ class SlurmClusterResolver(ClusterResolver):
sum(self._jobs.values()), num_tasks))
def _resolve_own_rank(self):
"""Return the rank of the current task in range [0, num_tasks)"""
"""Returns the rank of the current task in range [0, num_tasks)."""
return int(_get_slurm_var('PROCID'))
def _resolve_num_tasks(self):
"""Return the number of tasks for the current job step"""
return get_num_slurm_tasks()
"""Returns the number of tasks for the current job step."""
return _get_num_slurm_tasks()
def _resolve_hostlist(self):
"""Return a list of hostnames for nodes running the current job step"""
"""Returns a list of hostnames for nodes running the current job step."""
return expand_hostlist(_get_slurm_var('STEP_NODELIST'))
def _resolve_task_configuration(self):
"""Create a mapping of hostnames to the number of tasks allocated on it
"""Creates a mapping of hostnames to the number of tasks allocated on it.
Reads the SLURM environment to determine the nodes involved in the current
job step and number of tasks running on each node.
@ -352,7 +351,7 @@ class SlurmClusterResolver(ClusterResolver):
cluster_rank_offset_start = cluster_rank_offset_end
if self._auto_set_gpu is True:
if self._auto_set_gpu:
os.environ['CUDA_VISIBLE_DEVICES'] = self._gpu_allocation[self._rank]
return ClusterSpec(self._cluster_allocation)