Usage
ClusterFuture(expr = NULL, envir = parent.frame(), substitute = FALSE,
local = !persistent, globals = TRUE, gc = FALSE, persistent = FALSE,
workers = NULL, user = NULL, master = NULL, revtunnel = TRUE,
homogeneous = TRUE, ...)
Arguments
envir
The environment in which the evaluation
is done (or inherits from if local is TRUE). substitute
If TRUE, argument expr is
substitute():ed, otherwise not. local
If TRUE, the expression is evaluated such that
all assignments are done to local temporary environment, otherwise
the assignments are done to the global environment of the R process
evaluating the future.
globals
(optional) a logical, a character vector,
or a named list for controlling how globals are handled.
For details, see section 'Globals used by future expressions'
in the help for future(). persistent
If FALSE, the evaluation environment is cleared
from objects prior to the evaluation of the future.
workers
A cluster.
Alternatively, a character vector of host names or a numeric scalar,
for creating a cluster via makeCluster(workers). user
(optional) The user name to be used when communicating
with another host.
master
(optional) The hostname or IP address of the master
machine running this node.
revtunnel
If TRUE, reverse SSH tunneling is used for the
PSOCK cluster nodes to connect back to the master R process. This
avoids the hassle of firewalls, port forwarding and having to know
the internal / public IP address of the master R session.
homogeneous
If TRUE, all cluster nodes is assumed to use the
same path to Rscript as the main R session. If FALSE, the
it is assumed to be on the PATH for each node.
...
Additional named elements passed to Future().