Two parallel processes are okay, so you can use two callr background
processes ("children"), as long as you don't do heavy computations on
the main R process ("parent"). This is commonly done in many R
packages, e.g.library(parallel) cl <- makeCluster(2) y <- parLapply(cl = cl, X = 1:10, fun = slow_fcn) stopCluster(cl) /Henrik On Wed, May 22, 2024 at 7:50 PM Shu Fai Cheung <shufai.che...@gmail.com> wrote: > > Hil, > > I am exploring the use of callr in a package. I know that for packages > that do parallel computing, we should not use more than two cores in > examples, tests, etc. when being checked on CRAN. > > I believe I can use callr in tests and examples. How should I use > callr in compliance with CRAN policy? Because even just one call to > callr will start a new R session, should I limit the use of callr such > that at any one time, only one background R session created by callr > is active? > > Regards, > Shu Fai > > ______________________________________________ > R-package-devel@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-package-devel ______________________________________________ R-package-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-package-devel
