Dear Stephen Abrams, Welcome to R-package-devel!
В Thu, 13 Feb 2025 22:20:50 -0500 Stephen Abrams <stephen.abr...@gmail.com> пишет: > A secondary worry is that even if I resolve this, there might be > something else causing threads to spin up. Instead of using detectCores() [*] and creating cluster objects yourself, how about letting the user provide a cluster object for you as a function argument? Yes, it takes slightly more typing for the user, but on the other hand it lets the user: - choose the number of cores for themselves (currently the code seems to be ignoring the 'cores' argument) - distribute the computation over the network by connecting to the machines they know about - provide a completely custom, non-PSOCK cluster object that 'parallel' will nevertheless will work with Since you're already using doParallel, maybe the right choice is to let the user call registerDoParallel()? Determining the right amount of parallelism in your code is a surprisingly hard problem. Especially on shared computers, a program naively deciding to use all (or 3/4 of all, or 1/2 of all) processors may end up working much worse than a purely sequential one [**]. While rendering the vignette in a CRAN package, create a two-process cluster or set use_parallel = FALSE: CRAN needs the rest of the processors to check other packages in parallel with yours [***]. Good luck! -- Best regards, Ivan [*] https://github.com/dawdawdo/spect/blob/d48b002332f1a1c2d302afb28e08e7998f416200/R/spect.R#L388 [**] https://mastodon.social/@henrikbengtsson/113835651303559942 [***] http://contributor.r-project.org/cran-cookbook/code_issues.html#using-more-than-2-cores ______________________________________________ R-package-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-package-devel
