Dear list, I'm trying to clarify my understanding of what is and is not implemented / expected in terms of openMP support in R and CRAN package *binaries* for MacOS on apple silicon.
I have the CRAN's R binary for MacOS X (apple silicon) and also the CRAN binaries for two packages, glmmTMB and mgcv, both of which seem to be instrumented (following WRE) to use OpenMP if available. And from discussions here I understand that thanks to Simon and others, OpenMP support for MacOS X is in R and so should I expect OpenMP to work in these two packages? If I am, neither of them is working on various of my Mac systems; model fitting is single threaded and the test functions that glmmTMB and mgcv use to detect OMP support both return FALSE: R version 4.5.0 (2025-04-11) -- "How About a Twenty-Six" Platform: aarch64-apple-darwin20 (64-bit) r$> glmmTMB::omp_check() [1] FALSE r$> mgcv:::mgcv.omp() [1] FALSE Is this reproducible on other's systems? (Could someone run those two bits of code on their systems if they use the MacOS X R binary from CRAN and the CRAN Mac binaries for the packages - running mgcv's test should be easier as this pkg is shipped with the R binary). I am happy to provide further system details, but at this point I'm mostly hoping to clarify what I should expect and whether what I'm seeing is typical? Thanks in advance Gavin -- Gavin Simpson, PhD [he/him/his] [tw] @ucfagls [OrciD] 0000-0002-9084-8413 [web] fromthebottomoftheheap.net • Assistant Professor • Department of Animal & Veterinary Sciences, Aarhus University • Adjunct Professor, Department of Biology, University of Regina. _______________________________________________ R-SIG-Mac mailing list R-SIG-Mac@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-mac
