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
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