mirai

2.7.2

Minimalist Async Evaluation Framework for R

74packages depend

719Kdownloads / year

–test coverage

13/13checks pass

Overview

About

Maintained by Charlie GaoFirst published 2022-02-1650 releasesCRAN page ↗GitHub ↗

Evaluates R expressions asynchronously and in parallel, locally or distributed across networks. An official parallel cluster type for R. Built on 'nanonext' and 'NNG', its non-polling, event-driven architecture scales from a laptop to thousands of processes across high-performance computing clusters and cloud platforms. Features FIFO scheduling with task cancellation and bounded queues, promises for reactive programming, 'OpenTelemetry' distributed tracing, and custom serialization for cross-language data types.

Install

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

install.packages("mirai", 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("r-lib/mirai")

Development version from r-lib/mirai. 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-mirai

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

# 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-mirai

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

Health

CRAN checks

13OK

Slowest check: 2.5 min · r-oldrel-macos-x86_64

Check history

OK2026-06-08
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-06-07
12 OK · 0 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
OK2026-05-09
13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-04-28
11 OK · 0 NOTE · 0 WARNING · 2 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

Documentation signals are not tracked yet for this package.

Downloads

719K

CRAN downloads in the past year

Rank #410 · ~2K/day · ~59.9K/mo

mirai Releases R versions

Daily download trend is not available in this view yet.

62.4K30 days

225.2K90 days

719K1 year

Compare downloads with other packages →

Also on19.1K r2u38 autocran6K conda_forge35 c2d4u

Repository

GitHub ↗ r-lib/mirai

333Stars

18Forks

5Open issues

0Open PRs

52Releases

2,117Commits

12Contributors

rconcurrencydistributed-computinghigh-performance-computingasynchronous-tasksparallel-computingasync

2,117 commits · Last activity 2026-07-23 · +1.5% stars, 30d

Repository practices

Upstream repositoryBeta

7 development-tooling and community-health practices detected across 6 families in the upstream repository

Checks run against github.com/r-lib/mirai on 2026-07-19.

Continuous integration (1)

GitHub Actions

CRAN release process (1)

cran-comments.md

Docs source (1)

README.Rmd

Lint, format, editor (2)

AirRStudio project

Show all practices

Coverage (1)

Codecov

Git structural (1)

blame-ignore revs

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

Dependencies

Declared dependencies

7 external dependencies (excludes base and recommended)

Depends (1)

R >= 3.6

Imports (1)

nanonext

LinkingTo (0)

none

Suggests (6)

cli litedown mori otel otelsdk secretbase

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

74direct

154indirect

and 26 more packages.

Code & Tests

People & History

People (4)

Maintainer (1)

Charlie Gao

Author, Maintainer

Authors (1)

Charlie Gao

Author, Maintainer

Contributors (1)

Joe Cheng

Contributor · added in 1.3.0

Hibiki AI Limited

Posit Software, PBC

Funders (1)

Posit Software, PBC

Package Timeline

50 releases. R releases are shown for context.

2.7.2Latest
2026-07-20 · current release · diff ↗
2.7.1
2026-06-01 · diff ↗
2.7.0
2026-05-08 · diff ↗
R
R 4.6.0 released · 2026-04-24
2.6.1
2026-03-02 · diff ↗
2.6.0
2026-02-13 · diff ↗
2.5.3
2025-12-01 · diff ↗
2.5.2
2025-11-05 · diff ↗
2.5.1
2025-10-06 · diff ↗
2.5.0
2025-09-04 · diff ↗
2.4.1
2025-07-15 · diff ↗
2.4.0
2025-06-25 · diff ↗
2.3.0
2025-05-23 · diff ↗
R
R 4.5.0 released · 2025-04-11
2.2.0
2025-03-20 · diff ↗
2.1.0
2025-02-07 · diff ↗

Show 40 earlier events

2.0.1
2025-01-16 · diff ↗
2.0.0
2025-01-08 · diff ↗
1.3.1
2024-11-15 · diff ↗
1.3.0
2024-10-09 · diff ↗
1.2.0
2024-08-18 · diff ↗
1.1.1
2024-07-01 · diff ↗
1.1.0
2024-06-06 · diff ↗
1.0.0
2024-05-03 · diff ↗
R
R 4.4.0 released · 2024-04-24
0.13.2
2024-04-11 · diff ↗
0.12.1
2024-02-02 · diff ↗
0.12.0
2024-01-12 · diff ↗
0.11.3
2023-12-07 · diff ↗
0.11.2
2023-11-15 · diff ↗
0.11.1
2023-11-04 · diff ↗
0.11.0
2023-10-06 · diff ↗
0.10.0
2023-09-16 · diff ↗
0.9.1
2023-07-19 · diff ↗
0.9.0
2023-06-24 · diff ↗
0.8.7
2023-05-11 · diff ↗
0.8.4
2023-05-09 · diff ↗
R
R 4.3.0 released · 2023-04-21
0.8.3
2023-04-17 · diff ↗
0.8.2
2023-04-03 · diff ↗
0.8.1
2023-03-17 · diff ↗
0.8.0
2023-03-15 · diff ↗
0.7.2
2023-01-17 · diff ↗
0.7.1
2022-11-15 · diff ↗
0.7.0
2022-10-20 · diff ↗
0.6.0
2022-09-16 · diff ↗
0.5.3
2022-08-16 · diff ↗
0.5.2
2022-07-21 · diff ↗
0.5.0
2022-06-21 · diff ↗
R
R 4.2.0 released · 2022-04-22
0.4.1
2022-04-21 · diff ↗
0.4.0
2022-04-14 · diff ↗
0.2.0
2022-03-29 · diff ↗
0.1.1
2022-03-15 · diff ↗
0.1.0
2022-02-16
R
R 4.1.0 released · 2021-05-18

Package metadata

First published: 2022-02-16
Total releases: 50 / 4 yrs
License: MIT + file LICENSE OSI
Download size: 198 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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