"""Placeholder docstring"""
from __future__ import absolute_import
import importlib
import os
import shlex
import subprocess # pylint: disable=unused-import
import sys
import textwrap
import warnings
import six
from sagemaker_containers import _env, _errors, _files, _logging, _process
logger = _logging.get_logger()
DEFAULT_MODULE_NAME = "default_user_module_name"
def exists(name): # type: (str) -> bool
"""Return True if the module exists. Return False otherwise.
Args:
name (str): module name.
Returns:
(bool): boolean indicating if the module exists or not.
"""
try:
importlib.import_module(name)
import textwrap
from contextlib import contextmanager
import signal
import os
import subprocess
import time
import sagemaker_containers
from retrying import retry
from sagemaker_containers import _logging
from sagemaker_containers.beta import framework
logger = _logging.get_logger()
# MPI files.
_MPI_SCRIPT = "/mpi_script.sh"
_MPI_IS_RUNNING = "/mpi_is_running"
_MPI_IS_FINISHED = "/mpi_is_finished"
_CHANGE_HOSTNAME_LIBRARY = "/libchangehostname.so"
def _change_hostname(current_host):
"""Compiles a shared library to correct the behavior of the gethostname system call,
which OpenMPI depends on.
Args:
current_host (str): name of the current host, such as algo-1, algo-2, etc.
"""
