[R-pkg-devel] "Examples with CPU time > 2.5 times elapsed time" and other NOTEs on CRAN and rhub checks

[Ivan Krylov]

В Thu, 11 Jan 2024 12:39:17 +0000
D Z <david_j_zimmermann using hotmail.com> пишет:

> The package itself has no parallelism built-in, but Imports
> data.table. This NOTE does not surface on other platforms (eg using
> rhub or on my GitHub actions runners). My unit tests already limit
> data.table to 2 cores using setDTthreads(2), but I would like to keep
> this line out of the help files for my functions.

A breakpoint on pthread_create confirms that these are OpenMP threads
created by data.table. You can wrap setDTthreads(2) in \dontshow{} to
avoid visual pollution:
https://cran.r-project.org/doc/manuals/R-exts.html#index-_005cdontshow

> I receive the NOTE that my libs/ sub-directory is at 7.7Mb. Can I
> ignore this or do I need to figure out how to reduce the binary size
> of the package?

I think this is typically accepted for packages using C++.

> And last but not least, on some rhub instances (Fedora and Ubuntu
> GCC) I receive a NOTE that the package runs its examples too slowly
> (eg above 5secs). I have already tweaked the example code already
> that it runs reliably <4 secs on my development laptop

Then it should be fine.

Additionally, you may need to cast some of your Rprintf arguments to
avoid format warnings on Windows:
https://win-builder.r-project.org/incoming_pretest/RITCH_0.1.23_20240110_120457/Windows/00check.log

-- 
Best regards,
Ivan