|
|
#!/usr/bin/env python
|
|
|
# encoding: utf-8
|
|
|
"""
|
|
|
The ipcluster application.
|
|
|
|
|
|
Authors:
|
|
|
|
|
|
* Brian Granger
|
|
|
* MinRK
|
|
|
|
|
|
"""
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Copyright (C) 2008-2011 The IPython Development Team
|
|
|
#
|
|
|
# Distributed under the terms of the BSD License. The full license is in
|
|
|
# the file COPYING, distributed as part of this software.
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Imports
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
import errno
|
|
|
import logging
|
|
|
import os
|
|
|
import re
|
|
|
import signal
|
|
|
|
|
|
from subprocess import check_call, CalledProcessError, PIPE
|
|
|
import zmq
|
|
|
from zmq.eventloop import ioloop
|
|
|
|
|
|
from IPython.config.application import Application, boolean_flag, catch_config_error
|
|
|
from IPython.config.loader import Config
|
|
|
from IPython.core.application import BaseIPythonApplication
|
|
|
from IPython.core.profiledir import ProfileDir
|
|
|
from IPython.utils.daemonize import daemonize
|
|
|
from IPython.utils.importstring import import_item
|
|
|
from IPython.utils.sysinfo import num_cpus
|
|
|
from IPython.utils.traitlets import (Integer, Unicode, Bool, CFloat, Dict, List, Any,
|
|
|
DottedObjectName)
|
|
|
|
|
|
from IPython.parallel.apps.baseapp import (
|
|
|
BaseParallelApplication,
|
|
|
PIDFileError,
|
|
|
base_flags, base_aliases
|
|
|
)
|
|
|
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Module level variables
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
|
|
|
default_config_file_name = u'ipcluster_config.py'
|
|
|
|
|
|
|
|
|
_description = """Start an IPython cluster for parallel computing.
|
|
|
|
|
|
An IPython cluster consists of 1 controller and 1 or more engines.
|
|
|
This command automates the startup of these processes using a wide range of
|
|
|
startup methods (SSH, local processes, PBS, mpiexec, SGE, LSF, Condor,
|
|
|
Windows HPC Server 2008). To start a cluster with 4 engines on your
|
|
|
local host simply do 'ipcluster start --n=4'. For more complex usage
|
|
|
you will typically do 'ipython profile create mycluster --parallel', then edit
|
|
|
configuration files, followed by 'ipcluster start --profile=mycluster --n=4'.
|
|
|
"""
|
|
|
|
|
|
_main_examples = """
|
|
|
ipcluster start --n=4 # start a 4 node cluster on localhost
|
|
|
ipcluster start -h # show the help string for the start subcmd
|
|
|
|
|
|
ipcluster stop -h # show the help string for the stop subcmd
|
|
|
ipcluster engines -h # show the help string for the engines subcmd
|
|
|
"""
|
|
|
|
|
|
_start_examples = """
|
|
|
ipython profile create mycluster --parallel # create mycluster profile
|
|
|
ipcluster start --profile=mycluster --n=4 # start mycluster with 4 nodes
|
|
|
"""
|
|
|
|
|
|
_stop_examples = """
|
|
|
ipcluster stop --profile=mycluster # stop a running cluster by profile name
|
|
|
"""
|
|
|
|
|
|
_engines_examples = """
|
|
|
ipcluster engines --profile=mycluster --n=4 # start 4 engines only
|
|
|
"""
|
|
|
|
|
|
|
|
|
# Exit codes for ipcluster
|
|
|
|
|
|
# This will be the exit code if the ipcluster appears to be running because
|
|
|
# a .pid file exists
|
|
|
ALREADY_STARTED = 10
|
|
|
|
|
|
|
|
|
# This will be the exit code if ipcluster stop is run, but there is not .pid
|
|
|
# file to be found.
|
|
|
ALREADY_STOPPED = 11
|
|
|
|
|
|
# This will be the exit code if ipcluster engines is run, but there is not .pid
|
|
|
# file to be found.
|
|
|
NO_CLUSTER = 12
|
|
|
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Utilities
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
def find_launcher_class(clsname, kind):
|
|
|
"""Return a launcher for a given clsname and kind.
|
|
|
|
|
|
Parameters
|
|
|
==========
|
|
|
clsname : str
|
|
|
The full name of the launcher class, either with or without the
|
|
|
module path, or an abbreviation (MPI, SSH, SGE, PBS, LSF, Condor
|
|
|
WindowsHPC).
|
|
|
kind : str
|
|
|
Either 'EngineSet' or 'Controller'.
|
|
|
"""
|
|
|
if '.' not in clsname:
|
|
|
# not a module, presume it's the raw name in apps.launcher
|
|
|
if kind and kind not in clsname:
|
|
|
# doesn't match necessary full class name, assume it's
|
|
|
# just 'PBS' or 'MPI' etc prefix:
|
|
|
clsname = clsname + kind + 'Launcher'
|
|
|
clsname = 'IPython.parallel.apps.launcher.'+clsname
|
|
|
klass = import_item(clsname)
|
|
|
return klass
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Main application
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
start_help = """Start an IPython cluster for parallel computing
|
|
|
|
|
|
Start an ipython cluster by its profile name or cluster
|
|
|
directory. Cluster directories contain configuration, log and
|
|
|
security related files and are named using the convention
|
|
|
'profile_<name>' and should be creating using the 'start'
|
|
|
subcommand of 'ipcluster'. If your cluster directory is in
|
|
|
the cwd or the ipython directory, you can simply refer to it
|
|
|
using its profile name, 'ipcluster start --n=4 --profile=<profile>`,
|
|
|
otherwise use the 'profile-dir' option.
|
|
|
"""
|
|
|
stop_help = """Stop a running IPython cluster
|
|
|
|
|
|
Stop a running ipython cluster by its profile name or cluster
|
|
|
directory. Cluster directories are named using the convention
|
|
|
'profile_<name>'. If your cluster directory is in
|
|
|
the cwd or the ipython directory, you can simply refer to it
|
|
|
using its profile name, 'ipcluster stop --profile=<profile>`, otherwise
|
|
|
use the '--profile-dir' option.
|
|
|
"""
|
|
|
engines_help = """Start engines connected to an existing IPython cluster
|
|
|
|
|
|
Start one or more engines to connect to an existing Cluster
|
|
|
by profile name or cluster directory.
|
|
|
Cluster directories contain configuration, log and
|
|
|
security related files and are named using the convention
|
|
|
'profile_<name>' and should be creating using the 'start'
|
|
|
subcommand of 'ipcluster'. If your cluster directory is in
|
|
|
the cwd or the ipython directory, you can simply refer to it
|
|
|
using its profile name, 'ipcluster engines --n=4 --profile=<profile>`,
|
|
|
otherwise use the 'profile-dir' option.
|
|
|
"""
|
|
|
stop_aliases = dict(
|
|
|
signal='IPClusterStop.signal',
|
|
|
)
|
|
|
stop_aliases.update(base_aliases)
|
|
|
|
|
|
class IPClusterStop(BaseParallelApplication):
|
|
|
name = u'ipcluster'
|
|
|
description = stop_help
|
|
|
examples = _stop_examples
|
|
|
config_file_name = Unicode(default_config_file_name)
|
|
|
|
|
|
signal = Integer(signal.SIGINT, config=True,
|
|
|
help="signal to use for stopping processes.")
|
|
|
|
|
|
aliases = Dict(stop_aliases)
|
|
|
|
|
|
def start(self):
|
|
|
"""Start the app for the stop subcommand."""
|
|
|
try:
|
|
|
pid = self.get_pid_from_file()
|
|
|
except PIDFileError:
|
|
|
self.log.critical(
|
|
|
'Could not read pid file, cluster is probably not running.'
|
|
|
)
|
|
|
# Here I exit with a unusual exit status that other processes
|
|
|
# can watch for to learn how I existed.
|
|
|
self.remove_pid_file()
|
|
|
self.exit(ALREADY_STOPPED)
|
|
|
|
|
|
if not self.check_pid(pid):
|
|
|
self.log.critical(
|
|
|
'Cluster [pid=%r] is not running.' % pid
|
|
|
)
|
|
|
self.remove_pid_file()
|
|
|
# Here I exit with a unusual exit status that other processes
|
|
|
# can watch for to learn how I existed.
|
|
|
self.exit(ALREADY_STOPPED)
|
|
|
|
|
|
elif os.name=='posix':
|
|
|
sig = self.signal
|
|
|
self.log.info(
|
|
|
"Stopping cluster [pid=%r] with [signal=%r]" % (pid, sig)
|
|
|
)
|
|
|
try:
|
|
|
os.kill(pid, sig)
|
|
|
except OSError:
|
|
|
self.log.error("Stopping cluster failed, assuming already dead.",
|
|
|
exc_info=True)
|
|
|
self.remove_pid_file()
|
|
|
elif os.name=='nt':
|
|
|
try:
|
|
|
# kill the whole tree
|
|
|
p = check_call(['taskkill', '-pid', str(pid), '-t', '-f'], stdout=PIPE,stderr=PIPE)
|
|
|
except (CalledProcessError, OSError):
|
|
|
self.log.error("Stopping cluster failed, assuming already dead.",
|
|
|
exc_info=True)
|
|
|
self.remove_pid_file()
|
|
|
|
|
|
engine_aliases = {}
|
|
|
engine_aliases.update(base_aliases)
|
|
|
engine_aliases.update(dict(
|
|
|
n='IPClusterEngines.n',
|
|
|
engines = 'IPClusterEngines.engine_launcher_class',
|
|
|
daemonize = 'IPClusterEngines.daemonize',
|
|
|
))
|
|
|
engine_flags = {}
|
|
|
engine_flags.update(base_flags)
|
|
|
|
|
|
engine_flags.update(dict(
|
|
|
daemonize=(
|
|
|
{'IPClusterEngines' : {'daemonize' : True}},
|
|
|
"""run the cluster into the background (not available on Windows)""",
|
|
|
)
|
|
|
))
|
|
|
class IPClusterEngines(BaseParallelApplication):
|
|
|
|
|
|
name = u'ipcluster'
|
|
|
description = engines_help
|
|
|
examples = _engines_examples
|
|
|
usage = None
|
|
|
config_file_name = Unicode(default_config_file_name)
|
|
|
default_log_level = logging.INFO
|
|
|
classes = List()
|
|
|
def _classes_default(self):
|
|
|
from IPython.parallel.apps import launcher
|
|
|
launchers = launcher.all_launchers
|
|
|
eslaunchers = [ l for l in launchers if 'EngineSet' in l.__name__]
|
|
|
return [ProfileDir]+eslaunchers
|
|
|
|
|
|
n = Integer(num_cpus(), config=True,
|
|
|
help="""The number of engines to start. The default is to use one for each
|
|
|
CPU on your machine""")
|
|
|
|
|
|
engine_launcher = Any(config=True, help="Deprecated, use engine_launcher_class")
|
|
|
def _engine_launcher_changed(self, name, old, new):
|
|
|
if isinstance(new, basestring):
|
|
|
self.log.warn("WARNING: %s.engine_launcher is deprecated as of 0.12,"
|
|
|
" use engine_launcher_class" % self.__class__.__name__)
|
|
|
self.engine_launcher_class = new
|
|
|
engine_launcher_class = DottedObjectName('LocalEngineSetLauncher',
|
|
|
config=True,
|
|
|
help="""The class for launching a set of Engines. Change this value
|
|
|
to use various batch systems to launch your engines, such as PBS,SGE,MPI,etc.
|
|
|
Each launcher class has its own set of configuration options, for making sure
|
|
|
it will work in your environment.
|
|
|
|
|
|
You can also write your own launcher, and specify it's absolute import path,
|
|
|
as in 'mymodule.launcher.FTLEnginesLauncher`.
|
|
|
|
|
|
IPython's bundled examples include:
|
|
|
|
|
|
Local : start engines locally as subprocesses [default]
|
|
|
MPI : use mpiexec to launch engines in an MPI environment
|
|
|
PBS : use PBS (qsub) to submit engines to a batch queue
|
|
|
SGE : use SGE (qsub) to submit engines to a batch queue
|
|
|
LSF : use LSF (bsub) to submit engines to a batch queue
|
|
|
SSH : use SSH to start the controller
|
|
|
Note that SSH does *not* move the connection files
|
|
|
around, so you will likely have to do this manually
|
|
|
unless the machines are on a shared file system.
|
|
|
Condor : use HTCondor to submit engines to a batch queue
|
|
|
WindowsHPC : use Windows HPC
|
|
|
|
|
|
If you are using one of IPython's builtin launchers, you can specify just the
|
|
|
prefix, e.g:
|
|
|
|
|
|
c.IPClusterEngines.engine_launcher_class = 'SSH'
|
|
|
|
|
|
or:
|
|
|
|
|
|
ipcluster start --engines=MPI
|
|
|
|
|
|
"""
|
|
|
)
|
|
|
daemonize = Bool(False, config=True,
|
|
|
help="""Daemonize the ipcluster program. This implies --log-to-file.
|
|
|
Not available on Windows.
|
|
|
""")
|
|
|
|
|
|
def _daemonize_changed(self, name, old, new):
|
|
|
if new:
|
|
|
self.log_to_file = True
|
|
|
|
|
|
early_shutdown = Integer(30, config=True, help="The timeout (in seconds)")
|
|
|
_stopping = False
|
|
|
|
|
|
aliases = Dict(engine_aliases)
|
|
|
flags = Dict(engine_flags)
|
|
|
|
|
|
@catch_config_error
|
|
|
def initialize(self, argv=None):
|
|
|
super(IPClusterEngines, self).initialize(argv)
|
|
|
self.init_signal()
|
|
|
self.init_launchers()
|
|
|
|
|
|
def init_launchers(self):
|
|
|
self.engine_launcher = self.build_launcher(self.engine_launcher_class, 'EngineSet')
|
|
|
|
|
|
def init_signal(self):
|
|
|
# Setup signals
|
|
|
signal.signal(signal.SIGINT, self.sigint_handler)
|
|
|
|
|
|
def build_launcher(self, clsname, kind=None):
|
|
|
"""import and instantiate a Launcher based on importstring"""
|
|
|
try:
|
|
|
klass = find_launcher_class(clsname, kind)
|
|
|
except (ImportError, KeyError):
|
|
|
self.log.fatal("Could not import launcher class: %r"%clsname)
|
|
|
self.exit(1)
|
|
|
|
|
|
launcher = klass(
|
|
|
work_dir=u'.', config=self.config, log=self.log,
|
|
|
profile_dir=self.profile_dir.location, cluster_id=self.cluster_id,
|
|
|
)
|
|
|
return launcher
|
|
|
|
|
|
def engines_started_ok(self):
|
|
|
self.log.info("Engines appear to have started successfully")
|
|
|
self.early_shutdown = 0
|
|
|
|
|
|
def start_engines(self):
|
|
|
# Some EngineSetLaunchers ignore `n` and use their own engine count, such as SSH:
|
|
|
n = getattr(self.engine_launcher, 'engine_count', self.n)
|
|
|
self.log.info("Starting %s Engines with %s", n, self.engine_launcher_class)
|
|
|
self.engine_launcher.start(self.n)
|
|
|
self.engine_launcher.on_stop(self.engines_stopped_early)
|
|
|
if self.early_shutdown:
|
|
|
ioloop.DelayedCallback(self.engines_started_ok, self.early_shutdown*1000, self.loop).start()
|
|
|
|
|
|
def engines_stopped_early(self, r):
|
|
|
if self.early_shutdown and not self._stopping:
|
|
|
self.log.error("""
|
|
|
Engines shutdown early, they probably failed to connect.
|
|
|
|
|
|
Check the engine log files for output.
|
|
|
|
|
|
If your controller and engines are not on the same machine, you probably
|
|
|
have to instruct the controller to listen on an interface other than localhost.
|
|
|
|
|
|
You can set this by adding "--ip='*'" to your ControllerLauncher.controller_args.
|
|
|
|
|
|
Be sure to read our security docs before instructing your controller to listen on
|
|
|
a public interface.
|
|
|
""")
|
|
|
self.stop_launchers()
|
|
|
|
|
|
return self.engines_stopped(r)
|
|
|
|
|
|
def engines_stopped(self, r):
|
|
|
return self.loop.stop()
|
|
|
|
|
|
def stop_engines(self):
|
|
|
if self.engine_launcher.running:
|
|
|
self.log.info("Stopping Engines...")
|
|
|
d = self.engine_launcher.stop()
|
|
|
return d
|
|
|
else:
|
|
|
return None
|
|
|
|
|
|
def stop_launchers(self, r=None):
|
|
|
if not self._stopping:
|
|
|
self._stopping = True
|
|
|
self.log.error("IPython cluster: stopping")
|
|
|
self.stop_engines()
|
|
|
# Wait a few seconds to let things shut down.
|
|
|
dc = ioloop.DelayedCallback(self.loop.stop, 3000, self.loop)
|
|
|
dc.start()
|
|
|
|
|
|
def sigint_handler(self, signum, frame):
|
|
|
self.log.debug("SIGINT received, stopping launchers...")
|
|
|
self.stop_launchers()
|
|
|
|
|
|
def start_logging(self):
|
|
|
# Remove old log files of the controller and engine
|
|
|
if self.clean_logs:
|
|
|
log_dir = self.profile_dir.log_dir
|
|
|
for f in os.listdir(log_dir):
|
|
|
if re.match(r'ip(engine|controller)z-\d+\.(log|err|out)',f):
|
|
|
os.remove(os.path.join(log_dir, f))
|
|
|
# This will remove old log files for ipcluster itself
|
|
|
# super(IPBaseParallelApplication, self).start_logging()
|
|
|
|
|
|
def start(self):
|
|
|
"""Start the app for the engines subcommand."""
|
|
|
self.log.info("IPython cluster: started")
|
|
|
# First see if the cluster is already running
|
|
|
|
|
|
# Now log and daemonize
|
|
|
self.log.info(
|
|
|
'Starting engines with [daemon=%r]' % self.daemonize
|
|
|
)
|
|
|
# TODO: Get daemonize working on Windows or as a Windows Server.
|
|
|
if self.daemonize:
|
|
|
if os.name=='posix':
|
|
|
daemonize()
|
|
|
|
|
|
dc = ioloop.DelayedCallback(self.start_engines, 0, self.loop)
|
|
|
dc.start()
|
|
|
# Now write the new pid file AFTER our new forked pid is active.
|
|
|
# self.write_pid_file()
|
|
|
try:
|
|
|
self.loop.start()
|
|
|
except KeyboardInterrupt:
|
|
|
pass
|
|
|
except zmq.ZMQError as e:
|
|
|
if e.errno == errno.EINTR:
|
|
|
pass
|
|
|
else:
|
|
|
raise
|
|
|
|
|
|
start_aliases = {}
|
|
|
start_aliases.update(engine_aliases)
|
|
|
start_aliases.update(dict(
|
|
|
delay='IPClusterStart.delay',
|
|
|
controller = 'IPClusterStart.controller_launcher_class',
|
|
|
))
|
|
|
start_aliases['clean-logs'] = 'IPClusterStart.clean_logs'
|
|
|
|
|
|
class IPClusterStart(IPClusterEngines):
|
|
|
|
|
|
name = u'ipcluster'
|
|
|
description = start_help
|
|
|
examples = _start_examples
|
|
|
default_log_level = logging.INFO
|
|
|
auto_create = Bool(True, config=True,
|
|
|
help="whether to create the profile_dir if it doesn't exist")
|
|
|
classes = List()
|
|
|
def _classes_default(self,):
|
|
|
from IPython.parallel.apps import launcher
|
|
|
return [ProfileDir] + [IPClusterEngines] + launcher.all_launchers
|
|
|
|
|
|
clean_logs = Bool(True, config=True,
|
|
|
help="whether to cleanup old logs before starting")
|
|
|
|
|
|
delay = CFloat(1., config=True,
|
|
|
help="delay (in s) between starting the controller and the engines")
|
|
|
|
|
|
controller_launcher = Any(config=True, help="Deprecated, use controller_launcher_class")
|
|
|
def _controller_launcher_changed(self, name, old, new):
|
|
|
if isinstance(new, basestring):
|
|
|
# old 0.11-style config
|
|
|
self.log.warn("WARNING: %s.controller_launcher is deprecated as of 0.12,"
|
|
|
" use controller_launcher_class" % self.__class__.__name__)
|
|
|
self.controller_launcher_class = new
|
|
|
controller_launcher_class = DottedObjectName('LocalControllerLauncher',
|
|
|
config=True,
|
|
|
help="""The class for launching a Controller. Change this value if you want
|
|
|
your controller to also be launched by a batch system, such as PBS,SGE,MPI,etc.
|
|
|
|
|
|
Each launcher class has its own set of configuration options, for making sure
|
|
|
it will work in your environment.
|
|
|
|
|
|
Note that using a batch launcher for the controller *does not* put it
|
|
|
in the same batch job as the engines, so they will still start separately.
|
|
|
|
|
|
IPython's bundled examples include:
|
|
|
|
|
|
Local : start engines locally as subprocesses
|
|
|
MPI : use mpiexec to launch the controller in an MPI universe
|
|
|
PBS : use PBS (qsub) to submit the controller to a batch queue
|
|
|
SGE : use SGE (qsub) to submit the controller to a batch queue
|
|
|
LSF : use LSF (bsub) to submit the controller to a batch queue
|
|
|
Condor: use HTCondor to submit the controller to a batch queue
|
|
|
SSH : use SSH to start the controller
|
|
|
WindowsHPC : use Windows HPC
|
|
|
|
|
|
If you are using one of IPython's builtin launchers, you can specify just the
|
|
|
prefix, e.g:
|
|
|
|
|
|
c.IPClusterStart.controller_launcher_class = 'SSH'
|
|
|
|
|
|
or:
|
|
|
|
|
|
ipcluster start --controller=MPI
|
|
|
|
|
|
"""
|
|
|
)
|
|
|
reset = Bool(False, config=True,
|
|
|
help="Whether to reset config files as part of '--create'."
|
|
|
)
|
|
|
|
|
|
# flags = Dict(flags)
|
|
|
aliases = Dict(start_aliases)
|
|
|
|
|
|
def init_launchers(self):
|
|
|
self.controller_launcher = self.build_launcher(self.controller_launcher_class, 'Controller')
|
|
|
self.engine_launcher = self.build_launcher(self.engine_launcher_class, 'EngineSet')
|
|
|
|
|
|
def engines_stopped(self, r):
|
|
|
"""prevent parent.engines_stopped from stopping everything on engine shutdown"""
|
|
|
pass
|
|
|
|
|
|
def start_controller(self):
|
|
|
self.log.info("Starting Controller with %s", self.controller_launcher_class)
|
|
|
self.controller_launcher.on_stop(self.stop_launchers)
|
|
|
self.controller_launcher.start()
|
|
|
|
|
|
def stop_controller(self):
|
|
|
# self.log.info("In stop_controller")
|
|
|
if self.controller_launcher and self.controller_launcher.running:
|
|
|
return self.controller_launcher.stop()
|
|
|
|
|
|
def stop_launchers(self, r=None):
|
|
|
if not self._stopping:
|
|
|
self.stop_controller()
|
|
|
super(IPClusterStart, self).stop_launchers()
|
|
|
|
|
|
def start(self):
|
|
|
"""Start the app for the start subcommand."""
|
|
|
# First see if the cluster is already running
|
|
|
try:
|
|
|
pid = self.get_pid_from_file()
|
|
|
except PIDFileError:
|
|
|
pass
|
|
|
else:
|
|
|
if self.check_pid(pid):
|
|
|
self.log.critical(
|
|
|
'Cluster is already running with [pid=%s]. '
|
|
|
'use "ipcluster stop" to stop the cluster.' % pid
|
|
|
)
|
|
|
# Here I exit with a unusual exit status that other processes
|
|
|
# can watch for to learn how I existed.
|
|
|
self.exit(ALREADY_STARTED)
|
|
|
else:
|
|
|
self.remove_pid_file()
|
|
|
|
|
|
|
|
|
# Now log and daemonize
|
|
|
self.log.info(
|
|
|
'Starting ipcluster with [daemon=%r]' % self.daemonize
|
|
|
)
|
|
|
# TODO: Get daemonize working on Windows or as a Windows Server.
|
|
|
if self.daemonize:
|
|
|
if os.name=='posix':
|
|
|
daemonize()
|
|
|
|
|
|
dc = ioloop.DelayedCallback(self.start_controller, 0, self.loop)
|
|
|
dc.start()
|
|
|
dc = ioloop.DelayedCallback(self.start_engines, 1000*self.delay, self.loop)
|
|
|
dc.start()
|
|
|
# Now write the new pid file AFTER our new forked pid is active.
|
|
|
self.write_pid_file()
|
|
|
try:
|
|
|
self.loop.start()
|
|
|
except KeyboardInterrupt:
|
|
|
pass
|
|
|
except zmq.ZMQError as e:
|
|
|
if e.errno == errno.EINTR:
|
|
|
pass
|
|
|
else:
|
|
|
raise
|
|
|
finally:
|
|
|
self.remove_pid_file()
|
|
|
|
|
|
base='IPython.parallel.apps.ipclusterapp.IPCluster'
|
|
|
|
|
|
class IPClusterApp(BaseIPythonApplication):
|
|
|
name = u'ipcluster'
|
|
|
description = _description
|
|
|
examples = _main_examples
|
|
|
|
|
|
subcommands = {
|
|
|
'start' : (base+'Start', start_help),
|
|
|
'stop' : (base+'Stop', stop_help),
|
|
|
'engines' : (base+'Engines', engines_help),
|
|
|
}
|
|
|
|
|
|
# no aliases or flags for parent App
|
|
|
aliases = Dict()
|
|
|
flags = Dict()
|
|
|
|
|
|
def start(self):
|
|
|
if self.subapp is None:
|
|
|
print "No subcommand specified. Must specify one of: %s"%(self.subcommands.keys())
|
|
|
print
|
|
|
self.print_description()
|
|
|
self.print_subcommands()
|
|
|
self.exit(1)
|
|
|
else:
|
|
|
return self.subapp.start()
|
|
|
|
|
|
def launch_new_instance():
|
|
|
"""Create and run the IPython cluster."""
|
|
|
app = IPClusterApp.instance()
|
|
|
app.initialize()
|
|
|
app.start()
|
|
|
|
|
|
|
|
|
if __name__ == '__main__':
|
|
|
launch_new_instance()
|
|
|
|
|
|
|
