[R-pkg-devel] CRAN Debian error installation time

[Ben Bolker]

   May have been mentioned up-thread, but perhaps you also need to 
control BLAS parallelization? 
https://stackoverflow.com/questions/72669579/c-how-to-set-environment-variable-so-openblas-runs-multithreaded 
(also see the RhpcBLASctl package; hopefully you don't need it, but 
worth knowing about)

On 2025-01-27 1:26 p.m., Guillermo Vinue wrote:
> Dear All,
> 
> I am writing to you because I am getting this NOTE from the CRAN Debian
> machine that is not allowing CRAN acceptance: "Installation took CPU time
> 2.9 times elapsed time". Uwe Ligges told me that this means that I am using
> more than 2 cores, but I must not use more than 2 by default.
> 
> In order to overcome this issue, I have included an R script inside the R
> folder named with my package name and this content:
> 
> .onLoad <- function(libname, pkgname) {
>    if (Sys.getenv("OMP_THREAD_LIMIT") == "") {
>      Sys.setenv(OMP_THREAD_LIMIT = "2")
>    }
> }
> 
> In addition, I have included explicitly the parameter numThreads
> setThreadOptions(numThreads = 1) in the function where I use the
> setThreadOptions from the RcppParallel package. However, the CRAN NOTE
> persists.
> 
> Do you know how to fix that?
> 
> Many thanks in advance.
> 
> Kind regards,
> 
> Guillermo
> 
> 	[[alternative HTML version deleted]]
> 
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-- 
Dr. Benjamin Bolker
Professor, Mathematics & Statistics and Biology, McMaster University
Director, School of Computational Science and Engineering
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