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future (version 1.15.1)

Unified Parallel and Distributed Processing in R for Everyone

Description

The purpose of this package is to provide a lightweight and unified Future API for sequential and parallel processing of R expression via futures. The simplest way to evaluate an expression in parallel is to use `x %<-% { expression }` with `plan(multiprocess)`. This package implements sequential, multicore, multisession, and cluster futures. With these, R expressions can be evaluated on the local machine, in parallel a set of local machines, or distributed on a mix of local and remote machines. Extensions to this package implement additional backends for processing futures via compute cluster schedulers etc. Because of its unified API, there is no need to modify any code in order switch from sequential on the local machine to, say, distributed processing on a remote compute cluster. Another strength of this package is that global variables and functions are automatically identified and exported as needed, making it straightforward to tweak existing code to make use of futures.

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Install

install.packages('future')

Monthly Downloads

270,166

Version

1.15.1

License

LGPL (>= 2.1)

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Last Published

November 25th, 2019

Functions in future (1.15.1)

MultiprocessFuture-class

An multiprocess future is a future whose value will be resolved asynchronously in a parallel process
cluster

Create a cluster future whose value will be resolved asynchronously in a parallel process
availableWorkers

Get set of available workers
find_rshcmd

Search for SSH clients on the current system
find_references

Get first or all references of an R object
future

Create a future
%lazy%

Control lazy / eager evaluation for a future assignment
%plan%

Use a specific plan for a future assignment
availableCores

Get number of available cores on current machine
getExpression

Inject code for the next type of future to use for nested futures
autoStopCluster

Automatically stop a cluster when garbage collected
futures

Get all futures in a container
getGlobalsAndPackages

Retrieves global variables of an expression and their associated packages
backtrace

Back trace the expressions evaluated when an error was caught
%seed%

Set random seed for future assignment
%stdout%

Control whether standard output should be captured or not
futureOf

Get the future of a future variable
nullcon

Creates a connection to the system null device
future.options

Options used for futures
multisession

Create a multisession future whose value will be resolved asynchronously in a parallel R session
%globals%

Specify globals and packages for a future assignment
sequential

Create a sequential future whose value will be in the current R session
nbrOfWorkers

Get the number of workers available
values

Get all values in a container
run.Future

Run a future
pid_exists

Check whether a process PID exists or not
tweak

Tweak a future function by adjusting its default arguments
resolve

Resolve one or more futures synchronously
resetWorkers

Free up active background workers
supportsMulticore

Check whether multicore/forked processing is supported or not
%conditions%

Control whether standard output should be captured or not
multicore

Create a multicore future whose value will be resolved asynchronously in a forked parallel process
multiprocess

Create a multiprocess future whose value will be resolved asynchronously using multicore or a multisession evaluation
plan

Plan how to resolve a future
%tweak%

Temporarily tweaks the arguments of the current strategy
value.Future

The value of a future
.length

Gets the length of an object without dispatching
usedCores

Get number of cores currently used
makeClusterMPI

Create a Message Passing Interface (MPI) cluster of R workers for parallel processing
remote

Create a remote future whose value will be resolved asynchronously in a remote process
makeClusterPSOCK

Create a PSOCK cluster of R workers for parallel processing
%label%

Specify label for a future assignment
requestCore

Request a core for multicore processing
mandelbrot

Mandelbrot convergence counts
resolved

Check whether a future is resolved or not
result.Future

Get the results of a resolved future
sessionDetails

Outputs details on the current R session
signalConditions

Signals Captured Conditions
ClusterFuture-class

A cluster future is a future whose value will be resolved asynchronously in a parallel process
FutureResult

Results from resolving a future
as.cluster

Coerce an object to a cluster object
FutureCondition

A condition (message, warning, or error) that occurred while orchestrating a future
MulticoreFuture-class

An multicore future is a future whose value will be resolved asynchronously in a parallel process
FutureGlobals

A representation of a set of globals used with futures
ConstantFuture-class

A future with a constant value
UniprocessFuture-class

An uniprocess future is a future whose value will be resolved synchronously in the current process
Future-class

A future represents a value that will be available at some point in the future