parallelly

1.48.0

Enhancing the 'parallel' Package

114packages depend

4.2Mdownloads / year

64.0%test coverage

13/13checks pass

Overview

About

Maintained by Henrik BengtssonFirst published 2020-10-2036 releasesCRAN page ↗GitHub ↗

Utility functions that enhance the 'parallel' package and support the built-in parallel backends of the 'future' package. For example, availableCores() gives the number of CPU cores available to your R process as given by the operating system, 'cgroups' and Linux containers, R options, and environment variables, including those set by job schedulers on high-performance compute clusters. If none is set, it will fall back to parallel::detectCores(). Another example is 'parallel::makeCluster(type = "RPSOCK")', which is backward compatible with 'parallel::makeCluster()' while doing a better job in setting up remote cluster workers without the need for configuring the firewall to do port-forwarding to your local computer.

Install

R (CRAN)pak (dev)Ubuntu (r2u)Fedora (COPR)openSUSE (OBS)

install.packages("parallelly", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("futureverse/parallelly")

Development version from futureverse/parallelly. Installs pak first if it is not already available.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-parallelly

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled.

bspm (used by r2u) also needs make: sudo apt install make

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-parallelly

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-parallelly

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed).

Health

CRAN checks

13OK

Slowest check: 3.7 min · r-oldrel-windows-x86_64

Code health

Yes

Tests · ratio 0.02

64.0%

Coverage · measured lines

100%

Documentation · exports

Dependencies · direct

Check history

OK2026-04-30
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-04-28
12 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-03-31
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-03-28
13 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMENoVignettesNopkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 83%
Documented parameters: 90%
Return-value docs: 100%
References docs: 21%

Downloads

4.2M

CRAN downloads in the past year

Rank #176 · ~11.4K/day · ~346.5K/mo

Releases R versions

Daily download trend is not available in this view yet.

328.4K30 days

1.1M90 days

4.2M1 year

Compare downloads with other packages →

Also on74.8K r2u55 autocran432.9K conda_forge4.9K c2d4u

Repository

GitHub ↗ futureverse/parallelly

140Stars

7Forks

25Open issues

1Open PRs

0Releases

1,161Commits

2Contributors

rpackageparallel-computing

1,161 commits · Last activity 2026-06-29 · 0% stars, 30d

Stars over time

2025-05-27 · 1332026-07-07 · 140

Repository practices

Upstream repositoryBeta

4 development-tooling and community-health practices detected across 4 families in the upstream repository

Checks run against github.com/futureverse/parallelly on 2026-07-19.

Continuous integration (1)

GitHub Actions

Reproducibility and dev environment (1)

Makefile

CRAN release process (1)

revdep/

Governance and community (1)

Issue templates

How this is detected·Detection ruleset v1 (2026-07-18)

Dependencies

Declared dependencies

2 external dependencies (excludes base and recommended)

Depends (0)

none

Imports (3)

paralleltoolsutils

LinkingTo (0)

none

Suggests (2)

commonmark base64enc

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

114direct

1,257indirect

and 66 more packages.

Code & Tests

Code Composition

R 8,787 (66%)Rd 2,745 (21%)Markdown 1,553 (12%)C 180 (1%)CSS 57 (0%)

Code characteristics

Object systems

S335

Cyclomatic complexity: 2.0 median / 123 max

Test coverage

Line coverage

64%

Expression

63.9%

Tests / Examples

64.0% / – ex

Functions

141 20 exported

Complexity

6.6 avg / 123 max

Call network

141 nodes / 179 edges

Call graph

Open call graph →

Loading call graph…

Lowest coverage

141 functions

Function	Cyclo	Coverage
makeClusterMPI exp	12	0%
makeClusterSequential exp	1	0%
serializedSize exp	1	0%
.onLoad	12	0%
.onUnload	1	0%
call_slurm_show_hostname	2	0%

People & History

People (2)

Maintainer (1)

Henrik Bengtsson

Author, Maintainer, Copyright holder

Authors (1)

Henrik Bengtsson

Author, Maintainer, Copyright holder

Contributors (1)

Mike Cheng

Contributor · added in 1.38.0

Henrik Bengtsson

Author, Maintainer, Copyright holder

Package Timeline

36 releases. Pick two to compare their code metrics. R releases are shown for context.

1.48.0Latest
2026-06-29 · current release · diff ↗
R
R 4.6.0 released · 2026-04-24
1.47.0
2026-04-17 · diff ↗
1.46.1
2026-01-08 · diff ↗
1.46.0
2025-12-12 · diff ↗
1.45.1
2025-07-24 · diff ↗
1.45.0
2025-06-02 · diff ↗
1.44.0
2025-05-07 · diff ↗
R
R 4.5.0 released · 2025-04-11
1.43.0
2025-03-24 · diff ↗
1.42.0
2025-01-30 · diff ↗
1.41.0
2024-12-18 · diff ↗
1.40.1
2024-12-04 · diff ↗
1.40.0
2024-12-03 · diff ↗
1.39.0
2024-11-07 · diff ↗
1.38.0
2024-07-27 · diff ↗

Show 27 earlier events

R
R 4.4.0 released · 2024-04-24
1.37.1
2024-02-29 · diff ↗
1.37.0
2024-02-14 · diff ↗
1.36.0
2023-05-26 · diff ↗
R
R 4.3.0 released · 2023-04-21
1.35.0
2023-03-23 · diff ↗
1.34.0
2023-01-13 · diff ↗
1.33.0
2022-12-14 · diff ↗
1.32.1
2022-07-21 · diff ↗
1.32.0
2022-06-07 · diff ↗
1.31.1
2022-04-22 · diff ↗
R
R 4.2.0 released · 2022-04-22
1.31.0
2022-04-07 · diff ↗
1.30.0
2021-12-17 · diff ↗
1.29.0
2021-11-21 · diff ↗
1.28.1
2021-09-09 · diff ↗
1.27.0
2021-07-19 · diff ↗
1.26.1
2021-06-30 · diff ↗
1.26.0
2021-06-09 · diff ↗
R
R 4.1.0 released · 2021-05-18
1.25.0
2021-04-30 · diff ↗
1.24.0
2021-03-14 · diff ↗
1.23.0
2021-01-04 · diff ↗
1.22.0
2020-12-13 · diff ↗
1.21.0
2020-10-27 · diff ↗
1.20.0
2020-10-20
R
R 4.0.0 released · 2020-04-24

Package metadata

First published: 2020-10-20
Total releases: 36 / 6 yrs
License: LGPL (>= 2.1)
Download size: 331 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Appears in task views

High-Performance and Parallel Computing with R

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