On Tue, Nov 23, 2021 at 8:49 PM Henrik Bengtsson <henrik.bengts...@gmail.com> wrote: > > > Is there any reliable way to let packages to know if they are on CRAN, so > > they can set omp cores to 2 by default? > > Instead of testing for "on CRAN" or not, you can test for 'R CMD > check' running or not. 'R CMD check' sets environment variable > _R_CHECK_LIMIT_CORES_=TRUE. You can use that to limit your code to run > at most two (2) parallel threads or processes.
AFAICT this is only set with --as-cran and many CRAN machines don't use that and I am fairly sure that some of them don't set this env var manually, either. Gabor [...] ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
