launch_local | R Documentation |
Launching a daemon is very much akin to launching a satellite. They are a way
to deploy a daemon (in our case) on the desired machine. Once it executes, it
connects back to the host process using its own communications.
launch_local
deploys a daemon on the local machine in a new
background Rscript
process.
launch_remote
returns the shell command for deploying daemons as a
character vector. If an ssh_config()
, cluster_config()
or
remote_config()
configuration is supplied then this is used to launch the
daemon on the remote machine.
launch_local(n = 1L, ..., tls = NULL, .compute = NULL)
launch_remote(
n = 1L,
remote = remote_config(),
...,
tls = NULL,
.compute = NULL
)
n |
integer number of daemons. or for |
... |
(optional) arguments passed through to |
tls |
[default NULL] deprecated. Specify |
.compute |
[default NULL] character value for the compute profile to use (each has its own independent set of daemons), or NULL to use the 'default' profile. |
remote |
required only for launching remote daemons, a configuration
generated by |
Daemons must already be set for launchers to work.
These functions may be used to re-launch daemons that have exited after reaching time or task limits.
For non-dispatcher daemons using the default seed strategy, the generated
command contains the argument rs
specifying the length 7 L'Ecuyer-CMRG
random seed supplied to the daemon. The values will be different each time
the function is called.
For launch_local: Integer number of daemons launched.
For launch_remote: A character vector of daemon launch commands, classed as 'miraiLaunchCmd'. The printed output may be copy / pasted directly to the remote machine.
daemons(url = host_url(), dispatcher = FALSE)
status()
launch_local(1L, cleanup = FALSE)
launch_remote(1L, cleanup = FALSE)
Sys.sleep(1)
status()
daemons(0)
daemons(url = host_url(tls = TRUE))
status()
launch_local(2L, output = TRUE)
Sys.sleep(1)
status()
daemons(0)
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