Provided by: python3-ipyparallel_8.8.0-4_all 
NAME
ipcontroller - starts an IPython cluster controller
DESCRIPTION
Start the IPython controller for parallel computing.
The IPython controller provides a gateway between the IPython engines and clients. The controller needs
to be started before the engines and 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.
Options -------
Arguments that take values are actually convenience aliases to full Configurables, whose aliases are
listed on the help line. For more information on full configurables, see '--help-all'.
--log-to-file
send log output to a file
--debug
set log level to logging.DEBUG (maximize logging output)
--quiet
set log level to logging.CRITICAL (minimize logging output)
--init
Initialize profile with default config files.
This is equivalent
to running `ipython profile create <profile>` prior to startup.
--usethreads
Use threads instead of processes for the schedulers
--sqlitedb
use the SQLiteDB backend
--mongodb
use the MongoDB backend
--dictdb
use the in-memory DictDB backend
--nodb
use dummy DB backend, which doesn't store any information.
This is the default as of IPython 0.13.
To enable delayed or repeated retrieval of results from the Hub, select one of the true db
backends.
--reuse
reuse existing json connection files
--restore
Attempt to restore engines from a JSON file.
For use when resuming a crashed controller
--secure
Use HMAC digests for authentication of messages. Setting this flag will generate a new UUID to
use as the HMAC key.
--no-secure
Don't authenticate messages.
--ssh=<Unicode> (IPControllerApp.ssh_server)
Default: '' ssh url for clients to use when connecting to the Controller processes. It should be
of the form: [user@]server[:port]. The Controller's listening addresses must be accessible from
the ssh server
--enginessh=<Unicode> (IPControllerApp.engine_ssh_server)
Default: '' ssh url for engines to use when connecting to the Controller processes. It should be
of the form: [user@]server[:port]. The Controller's listening addresses must be accessible from
the ssh server
--location=<Unicode> (IPControllerApp.location)
Default: 'pesto' The external IP or domain name of the Controller, used for disambiguating engine
and client connections.
--url=<Unicode> (HubFactory.url)
Default: '' The 0MQ url used for registration. This sets transport, ip, and port in one variable.
For example: url='tcp://127.0.0.1:12345' or url='epgm://*:90210'
--ip=<Unicode> (HubFactory.ip)
Default: '' The IP address for registration. This is generally either '127.0.0.1' for loopback
only or '*' for all interfaces.
--transport=<Unicode> (HubFactory.transport)
Default: 'tcp' The 0MQ transport for communications. This will likely be the default of 'tcp',
but other values include 'ipc', 'epgm', 'inproc'.
--port=<Int> (HubFactory.regport)
Default: 0 The port on which the Hub listens for registration.
--ping=<Int> (HeartMonitor.period)
Default: 3000 The frequency at which the Hub pings the engines for heartbeats (in ms)
--scheme=<Enum> (TaskScheduler.scheme_name)
Default: 'leastload' Choices: ('leastload', 'pure', 'lru', 'plainrandom', 'weighted', 'twobin')
select the task scheduler scheme [default: Python LRU] Options are: 'pure', 'lru', 'plainrandom',
'weighted', 'twobin','leastload'
--hwm=<Int> (TaskScheduler.hwm)
Default: 1 specify the High Water Mark (HWM) for the downstream socket in the Task scheduler. This
is the maximum number of allowed outstanding tasks on each engine. The default (1) means that
only one task can be outstanding on each engine. Setting TaskScheduler.hwm=0 means there is no
limit, and the engines continue to be assigned tasks while they are working, effectively hiding
network latency behind computation, but can result in an imbalance of work when submitting many
heterogenous tasks all at once. Any positive value greater than one is a compromise between the
two.
--profile-dir=<Unicode> (ProfileDir.location)
Default: '' Set the profile location directly. This overrides the logic used by the `profile`
option.
--profile=<Unicode> (BaseIPythonApplication.profile)
Default: 'default' The IPython profile to use.
--ipython-dir=<Unicode> (BaseIPythonApplication.ipython_dir)
Default: '' The name of the IPython directory. This directory is used for logging configuration
(through profiles), history storage, etc. The default is usually $HOME/.ipython. This option can
also be specified through the environment variable IPYTHONDIR.
--log-level=<Enum> (Application.log_level)
Default: 30 Choices: (0, 10, 20, 30, 40, 50, 'DEBUG', 'INFO', 'WARN', 'ERROR', 'CRITICAL') Set the
log level by value or name.
--config=<Unicode> (BaseIPythonApplication.extra_config_file)
Default: '' Path to an extra config file to load. If specified, load this config file in addition
to any other IPython config.
--work-dir=<Unicode> (BaseParallelApplication.work_dir)
Default: '/home/joe' Set the working dir for the process.
--log-to-file=<Bool> (BaseParallelApplication.log_to_file)
Default: False whether to log to a file
--clean-logs=<Bool> (BaseParallelApplication.clean_logs)
Default: False whether to cleanup old logfiles before starting
--log-url=<Unicode> (BaseParallelApplication.log_url)
Default: '' The ZMQ URL of the iplogger to aggregate logging.
--cluster-id=<Unicode> (BaseParallelApplication.cluster_id)
Default: '' String id to add to runtime files, to prevent name collisions when using multiple
clusters with a single profile simultaneously. When set, files will be named like:
'ipcontroller-<cluster_id>-engine.json' Since this is text inserted into filenames, typical
recommendations apply: Simple character strings are ideal, and spaces are not recommended (but
should generally work).
--ident=<CUnicode> (Session.session)
Default: '' The UUID identifying this session.
--user=<Unicode> (Session.username)
Default: 'joe' Username for the Session. Default is your system username.
--keyfile=<Unicode> (Session.keyfile)
Default: '' path to file containing execution key.
To see all available configurables, use --help-all.
EXAMPLES
ipcontroller --ip=192.168.0.1 --port=1000
# listen on ip, port for engines
ipcontroller --scheme=pure
# use the pure zeromq scheduler
ipyparallel 6.2.4 September 2020 IPCONTROLLER(1)