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future (version 1.16.0)

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

1.16.0

License

LGPL (>= 2.1)

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Last Published

January 16th, 2020

Functions in future (1.16.0)

FutureCondition

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

A future with a constant value
as.cluster

Coerce an object to a cluster object
MultiprocessFuture-class

An multiprocess future is a future whose value will be resolved asynchronously in a parallel process
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
UniprocessFuture-class

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

A cluster future is a future whose value will be resolved asynchronously in a parallel process
Future-class

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

Results from resolving a future
availableWorkers

Get set of available workers
availableCores

Get number of available cores on current machine
autoStopCluster

Automatically stop a cluster when garbage collected
find_references

Get first or all references of an R object
find_rshcmd

Search for SSH clients on the current system
future.options

Options used for futures
future

Create a future
cluster

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

Export globals to the sticky-globals environment of the cluster nodes
backtrace

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

Control whether standard output should be captured or not
%lazy%

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

Specify globals and packages for a future assignment
getExpression

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

Specify label for a future assignment
%seed%

Set random seed for future assignment
%plan%

Use a specific plan for a future assignment
getGlobalsAndPackages

Retrieves global variables of an expression and their associated packages
futures

Get all futures in a container
futureOf

Get the future of a future variable
nbrOfWorkers

Get the number of workers available
make_rng_seeds

Produce Reproducible Seeds for Parallel Random Number Generation
multicore

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

Mandelbrot convergence counts
multisession

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

Temporarily tweaks the arguments of the current strategy
%stdout%

Control whether standard output should be captured or not
makeClusterMPI

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

Create a PSOCK cluster of R workers for parallel processing
multiprocess

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

Free up active background workers
nullcon

Creates a connection to the system null device
pid_exists

Check whether a process PID exists or not
requestCore

Request a core for multicore processing
remote

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

Gets the length of an object without dispatching
plan

Plan how to resolve a future
run.Future

Run a future
resolved

Check whether a future is resolved or not
result.Future

Get the results of a resolved future
sequential

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

The value of a future
resolve

Resolve one or more futures synchronously
tweak

Tweak a future function by adjusting its default arguments
usedCores

Get number of cores currently used
sessionDetails

Outputs details on the current R session
values

Get all values in a container
signalConditions

Signals Captured Conditions
supportsMulticore

Check whether multicore/forked processing is supported or not
sticky_globals

Place a sticky-globals environment immediately after the global environment