Description
Share R objects across processes on the same machine via a single copy in 'POSIX' shared memory (Linux, macOS) or a 'Win32' file mapping (Windows). Every process reads from the same physical pages through the R Alternative Representation ('ALTREP') framework, giving lazy, zero-copy access. Shared objects serialize compactly as their shared memory name rather than their full contents.
Downloads
CRAN
2.1K
Last 30 days
2733rd
4.8K
Last 90 days
4.8K
Last year
Trend: -13.1% (30d vs prior 30d)
r2u
CRAN
57
Last 30 days
87
Last 90 days
87
Last year
Trend: +90% (30d vs prior 30d)
autoCRAN
6
Last 7 days
9
Last 30 days
0
All-time
autoCRAN-only: this name is served only by autoCRAN, so the count is exact.
CRAN Check Status
13
OK
Show all 13 flavors
| Flavor | Status |
|---|---|
| r-devel-linux-x86_64-debian-clang | OK |
| r-devel-linux-x86_64-debian-gcc | OK |
| r-devel-linux-x86_64-fedora-clang | OK |
| r-devel-linux-x86_64-fedora-gcc | OK |
| r-devel-windows-x86_64 | OK |
| r-oldrel-macos-arm64 | OK |
| r-oldrel-macos-x86_64 | OK |
| r-oldrel-windows-x86_64 | OK |
| r-patched-linux-x86_64 | OK |
| r-release-linux-x86_64 | OK |
| r-release-macos-arm64 | OK |
| r-release-macos-x86_64 | OK |
| r-release-windows-x86_64 | OK |
Check History
OK 13 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Jun 9, 2026
NOTE 12 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Jun 7, 2026
NOTE
r-devel-linux-x86_64-debian-gcc
R code for possible problems
Warning in file(open = "w+") : cannot open file '/tmp/RtmpjR8vVZ/Rf18ec50750889ef': No space left on device Error in file(open = "w+") : cannot open the connection Calls: <Anonymous> -> .load_namespace_quietly -> .try_quietly -> file Execution halted