|
|
#!/usr/bin/env python
|
|
|
# encoding: utf-8
|
|
|
"""
|
|
|
The IPython engine 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 json
|
|
|
import os
|
|
|
import sys
|
|
|
import time
|
|
|
|
|
|
import zmq
|
|
|
from zmq.eventloop import ioloop
|
|
|
|
|
|
from IPython.core.profiledir import ProfileDir
|
|
|
from IPython.parallel.apps.baseapp import (
|
|
|
BaseParallelApplication,
|
|
|
base_aliases,
|
|
|
base_flags,
|
|
|
catch_config_error,
|
|
|
)
|
|
|
from IPython.kernel.zmq.log import EnginePUBHandler
|
|
|
from IPython.kernel.zmq.ipkernel import Kernel
|
|
|
from IPython.kernel.zmq.kernelapp import IPKernelApp
|
|
|
from IPython.kernel.zmq.session import (
|
|
|
Session, session_aliases, session_flags
|
|
|
)
|
|
|
from IPython.kernel.zmq.zmqshell import ZMQInteractiveShell
|
|
|
|
|
|
from IPython.config.configurable import Configurable
|
|
|
|
|
|
from IPython.parallel.engine.engine import EngineFactory
|
|
|
from IPython.parallel.util import disambiguate_ip_address
|
|
|
|
|
|
from IPython.utils.importstring import import_item
|
|
|
from IPython.utils.py3compat import cast_bytes
|
|
|
from IPython.utils.traitlets import Bool, Unicode, Dict, List, Float, Instance
|
|
|
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Module level variables
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
_description = """Start an IPython engine for parallel computing.
|
|
|
|
|
|
IPython engines run in parallel and perform computations on behalf of a client
|
|
|
and controller. A controller needs to be started before the engines. The
|
|
|
engine can be configured using command line options or using a cluster
|
|
|
directory. Cluster directories contain config, log and security files and are
|
|
|
usually located in your ipython directory and named as "profile_name".
|
|
|
See the `profile` and `profile-dir` options for details.
|
|
|
"""
|
|
|
|
|
|
_examples = """
|
|
|
ipengine --ip=192.168.0.1 --port=1000 # connect to hub at ip and port
|
|
|
ipengine --log-to-file --log-level=DEBUG # log to a file with DEBUG verbosity
|
|
|
"""
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# MPI configuration
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
mpi4py_init = """from mpi4py import MPI as mpi
|
|
|
mpi.size = mpi.COMM_WORLD.Get_size()
|
|
|
mpi.rank = mpi.COMM_WORLD.Get_rank()
|
|
|
"""
|
|
|
|
|
|
|
|
|
pytrilinos_init = """from PyTrilinos import Epetra
|
|
|
class SimpleStruct:
|
|
|
pass
|
|
|
mpi = SimpleStruct()
|
|
|
mpi.rank = 0
|
|
|
mpi.size = 0
|
|
|
"""
|
|
|
|
|
|
class MPI(Configurable):
|
|
|
"""Configurable for MPI initialization"""
|
|
|
use = Unicode('', config=True,
|
|
|
help='How to enable MPI (mpi4py, pytrilinos, or empty string to disable).'
|
|
|
)
|
|
|
|
|
|
def _use_changed(self, name, old, new):
|
|
|
# load default init script if it's not set
|
|
|
if not self.init_script:
|
|
|
self.init_script = self.default_inits.get(new, '')
|
|
|
|
|
|
init_script = Unicode('', config=True,
|
|
|
help="Initialization code for MPI")
|
|
|
|
|
|
default_inits = Dict({'mpi4py' : mpi4py_init, 'pytrilinos':pytrilinos_init},
|
|
|
config=True)
|
|
|
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Main application
|
|
|
#-----------------------------------------------------------------------------
|
|
|
aliases = dict(
|
|
|
file = 'IPEngineApp.url_file',
|
|
|
c = 'IPEngineApp.startup_command',
|
|
|
s = 'IPEngineApp.startup_script',
|
|
|
|
|
|
url = 'EngineFactory.url',
|
|
|
ssh = 'EngineFactory.sshserver',
|
|
|
sshkey = 'EngineFactory.sshkey',
|
|
|
ip = 'EngineFactory.ip',
|
|
|
transport = 'EngineFactory.transport',
|
|
|
port = 'EngineFactory.regport',
|
|
|
location = 'EngineFactory.location',
|
|
|
|
|
|
timeout = 'EngineFactory.timeout',
|
|
|
|
|
|
mpi = 'MPI.use',
|
|
|
|
|
|
)
|
|
|
aliases.update(base_aliases)
|
|
|
aliases.update(session_aliases)
|
|
|
flags = {}
|
|
|
flags.update(base_flags)
|
|
|
flags.update(session_flags)
|
|
|
|
|
|
class IPEngineApp(BaseParallelApplication):
|
|
|
|
|
|
name = 'ipengine'
|
|
|
description = _description
|
|
|
examples = _examples
|
|
|
classes = List([ZMQInteractiveShell, ProfileDir, Session, EngineFactory, Kernel, MPI])
|
|
|
|
|
|
startup_script = Unicode(u'', config=True,
|
|
|
help='specify a script to be run at startup')
|
|
|
startup_command = Unicode('', config=True,
|
|
|
help='specify a command to be run at startup')
|
|
|
|
|
|
url_file = Unicode(u'', config=True,
|
|
|
help="""The full location of the file containing the connection information for
|
|
|
the controller. If this is not given, the file must be in the
|
|
|
security directory of the cluster directory. This location is
|
|
|
resolved using the `profile` or `profile_dir` options.""",
|
|
|
)
|
|
|
wait_for_url_file = Float(5, config=True,
|
|
|
help="""The maximum number of seconds to wait for url_file to exist.
|
|
|
This is useful for batch-systems and shared-filesystems where the
|
|
|
controller and engine are started at the same time and it
|
|
|
may take a moment for the controller to write the connector files.""")
|
|
|
|
|
|
url_file_name = Unicode(u'ipcontroller-engine.json', config=True)
|
|
|
|
|
|
def _cluster_id_changed(self, name, old, new):
|
|
|
if new:
|
|
|
base = 'ipcontroller-%s' % new
|
|
|
else:
|
|
|
base = 'ipcontroller'
|
|
|
self.url_file_name = "%s-engine.json" % base
|
|
|
|
|
|
log_url = Unicode('', config=True,
|
|
|
help="""The URL for the iploggerapp instance, for forwarding
|
|
|
logging to a central location.""")
|
|
|
|
|
|
# an IPKernelApp instance, used to setup listening for shell frontends
|
|
|
kernel_app = Instance(IPKernelApp)
|
|
|
|
|
|
aliases = Dict(aliases)
|
|
|
flags = Dict(flags)
|
|
|
|
|
|
@property
|
|
|
def kernel(self):
|
|
|
"""allow access to the Kernel object, so I look like IPKernelApp"""
|
|
|
return self.engine.kernel
|
|
|
|
|
|
def find_url_file(self):
|
|
|
"""Set the url file.
|
|
|
|
|
|
Here we don't try to actually see if it exists for is valid as that
|
|
|
is hadled by the connection logic.
|
|
|
"""
|
|
|
config = self.config
|
|
|
# Find the actual controller key file
|
|
|
if not self.url_file:
|
|
|
self.url_file = os.path.join(
|
|
|
self.profile_dir.security_dir,
|
|
|
self.url_file_name
|
|
|
)
|
|
|
|
|
|
def load_connector_file(self):
|
|
|
"""load config from a JSON connector file,
|
|
|
at a *lower* priority than command-line/config files.
|
|
|
"""
|
|
|
|
|
|
self.log.info("Loading url_file %r", self.url_file)
|
|
|
config = self.config
|
|
|
|
|
|
with open(self.url_file) as f:
|
|
|
num_tries = 0
|
|
|
max_tries = 5
|
|
|
d = ""
|
|
|
while not d:
|
|
|
try:
|
|
|
d = json.loads(f.read())
|
|
|
except ValueError:
|
|
|
if num_tries > max_tries:
|
|
|
raise
|
|
|
num_tries += 1
|
|
|
time.sleep(0.5)
|
|
|
|
|
|
# allow hand-override of location for disambiguation
|
|
|
# and ssh-server
|
|
|
if 'EngineFactory.location' not in config:
|
|
|
config.EngineFactory.location = d['location']
|
|
|
if 'EngineFactory.sshserver' not in config:
|
|
|
config.EngineFactory.sshserver = d.get('ssh')
|
|
|
|
|
|
location = config.EngineFactory.location
|
|
|
|
|
|
proto, ip = d['interface'].split('://')
|
|
|
ip = disambiguate_ip_address(ip, location)
|
|
|
d['interface'] = '%s://%s' % (proto, ip)
|
|
|
|
|
|
# DO NOT allow override of basic URLs, serialization, or key
|
|
|
# JSON file takes top priority there
|
|
|
config.Session.key = cast_bytes(d['key'])
|
|
|
config.Session.signature_scheme = d['signature_scheme']
|
|
|
|
|
|
config.EngineFactory.url = d['interface'] + ':%i' % d['registration']
|
|
|
|
|
|
config.Session.packer = d['pack']
|
|
|
config.Session.unpacker = d['unpack']
|
|
|
|
|
|
self.log.debug("Config changed:")
|
|
|
self.log.debug("%r", config)
|
|
|
self.connection_info = d
|
|
|
|
|
|
def bind_kernel(self, **kwargs):
|
|
|
"""Promote engine to listening kernel, accessible to frontends."""
|
|
|
if self.kernel_app is not None:
|
|
|
return
|
|
|
|
|
|
self.log.info("Opening ports for direct connections as an IPython kernel")
|
|
|
|
|
|
kernel = self.kernel
|
|
|
|
|
|
kwargs.setdefault('config', self.config)
|
|
|
kwargs.setdefault('log', self.log)
|
|
|
kwargs.setdefault('profile_dir', self.profile_dir)
|
|
|
kwargs.setdefault('session', self.engine.session)
|
|
|
|
|
|
app = self.kernel_app = IPKernelApp(**kwargs)
|
|
|
|
|
|
# allow IPKernelApp.instance():
|
|
|
IPKernelApp._instance = app
|
|
|
|
|
|
app.init_connection_file()
|
|
|
# relevant contents of init_sockets:
|
|
|
|
|
|
app.shell_port = app._bind_socket(kernel.shell_streams[0], app.shell_port)
|
|
|
app.log.debug("shell ROUTER Channel on port: %i", app.shell_port)
|
|
|
|
|
|
app.iopub_port = app._bind_socket(kernel.iopub_socket, app.iopub_port)
|
|
|
app.log.debug("iopub PUB Channel on port: %i", app.iopub_port)
|
|
|
|
|
|
kernel.stdin_socket = self.engine.context.socket(zmq.ROUTER)
|
|
|
app.stdin_port = app._bind_socket(kernel.stdin_socket, app.stdin_port)
|
|
|
app.log.debug("stdin ROUTER Channel on port: %i", app.stdin_port)
|
|
|
|
|
|
# start the heartbeat, and log connection info:
|
|
|
|
|
|
app.init_heartbeat()
|
|
|
|
|
|
app.log_connection_info()
|
|
|
app.write_connection_file()
|
|
|
|
|
|
|
|
|
def init_engine(self):
|
|
|
# This is the working dir by now.
|
|
|
sys.path.insert(0, '')
|
|
|
config = self.config
|
|
|
# print config
|
|
|
self.find_url_file()
|
|
|
|
|
|
# was the url manually specified?
|
|
|
keys = set(self.config.EngineFactory.keys())
|
|
|
keys = keys.union(set(self.config.RegistrationFactory.keys()))
|
|
|
|
|
|
if keys.intersection(set(['ip', 'url', 'port'])):
|
|
|
# Connection info was specified, don't wait for the file
|
|
|
url_specified = True
|
|
|
self.wait_for_url_file = 0
|
|
|
else:
|
|
|
url_specified = False
|
|
|
|
|
|
if self.wait_for_url_file and not os.path.exists(self.url_file):
|
|
|
self.log.warn("url_file %r not found", self.url_file)
|
|
|
self.log.warn("Waiting up to %.1f seconds for it to arrive.", self.wait_for_url_file)
|
|
|
tic = time.time()
|
|
|
while not os.path.exists(self.url_file) and (time.time()-tic < self.wait_for_url_file):
|
|
|
# wait for url_file to exist, or until time limit
|
|
|
time.sleep(0.1)
|
|
|
|
|
|
if os.path.exists(self.url_file):
|
|
|
self.load_connector_file()
|
|
|
elif not url_specified:
|
|
|
self.log.fatal("Fatal: url file never arrived: %s", self.url_file)
|
|
|
self.exit(1)
|
|
|
|
|
|
exec_lines = []
|
|
|
for app in ('IPKernelApp', 'InteractiveShellApp'):
|
|
|
if '%s.exec_lines' % app in config:
|
|
|
exec_lines = config[app].exec_lines
|
|
|
break
|
|
|
|
|
|
exec_files = []
|
|
|
for app in ('IPKernelApp', 'InteractiveShellApp'):
|
|
|
if '%s.exec_files' % app in config:
|
|
|
exec_files = config[app].exec_files
|
|
|
break
|
|
|
|
|
|
config.IPKernelApp.exec_lines = exec_lines
|
|
|
config.IPKernelApp.exec_files = exec_files
|
|
|
|
|
|
if self.startup_script:
|
|
|
exec_files.append(self.startup_script)
|
|
|
if self.startup_command:
|
|
|
exec_lines.append(self.startup_command)
|
|
|
|
|
|
# Create the underlying shell class and Engine
|
|
|
# shell_class = import_item(self.master_config.Global.shell_class)
|
|
|
# print self.config
|
|
|
try:
|
|
|
self.engine = EngineFactory(config=config, log=self.log,
|
|
|
connection_info=self.connection_info,
|
|
|
)
|
|
|
except:
|
|
|
self.log.error("Couldn't start the Engine", exc_info=True)
|
|
|
self.exit(1)
|
|
|
|
|
|
def forward_logging(self):
|
|
|
if self.log_url:
|
|
|
self.log.info("Forwarding logging to %s", self.log_url)
|
|
|
context = self.engine.context
|
|
|
lsock = context.socket(zmq.PUB)
|
|
|
lsock.connect(self.log_url)
|
|
|
handler = EnginePUBHandler(self.engine, lsock)
|
|
|
handler.setLevel(self.log_level)
|
|
|
self.log.addHandler(handler)
|
|
|
|
|
|
def init_mpi(self):
|
|
|
global mpi
|
|
|
self.mpi = MPI(parent=self)
|
|
|
|
|
|
mpi_import_statement = self.mpi.init_script
|
|
|
if mpi_import_statement:
|
|
|
try:
|
|
|
self.log.info("Initializing MPI:")
|
|
|
self.log.info(mpi_import_statement)
|
|
|
exec(mpi_import_statement, globals())
|
|
|
except:
|
|
|
mpi = None
|
|
|
else:
|
|
|
mpi = None
|
|
|
|
|
|
@catch_config_error
|
|
|
def initialize(self, argv=None):
|
|
|
super(IPEngineApp, self).initialize(argv)
|
|
|
self.init_mpi()
|
|
|
self.init_engine()
|
|
|
self.forward_logging()
|
|
|
|
|
|
def start(self):
|
|
|
self.engine.start()
|
|
|
try:
|
|
|
self.engine.loop.start()
|
|
|
except KeyboardInterrupt:
|
|
|
self.log.critical("Engine Interrupted, shutting down...\n")
|
|
|
|
|
|
|
|
|
launch_new_instance = IPEngineApp.launch_instance
|
|
|
|
|
|
|
|
|
if __name__ == '__main__':
|
|
|
launch_new_instance()
|
|
|
|
|
|
|
