This isn't Mac specific (I can reproduce it in Linux). Switching the igraph from version from 1.2.2 (slow) to 0.7.1 (fast) is enough, so this also has nothing to do with R itself. This should be reported to https://igraph.org/r/, either on the mailing list, bug tracker, or both.
Best, Ista On Fri, Dec 14, 2018 at 3:24 AM Cowan, R (MERIT) <r.co...@maastrichtuniversity.nl> wrote: > > Thanks for the help. > > Attached are 3 files: > The simulation script as simulationR-R.txt > Rprof() output from R 3.1.3 as Rprof-3-1-3.txt > Rprof() output from R 3.5.1 as Rprof-3-5-1.txt > > There is information about versions and system times at the top of the > simulation script. I had a student try it on her windows machine. She has R > version 3.4 installed. It performs the same as version 3.5, so whatever > changes to R account for the change in performance probably came before > version 3.4 (and suggests it is not the OS). > > I hope the script contains enough documentation that you can decipher it. > There are comments about what the algorithm is doing but also comments about > things I have done to try to isolate the problem (deleting stuff and moving > things around, which by the way makes nonsense of the simulation itself, but > that is not an issue here). > It uses the igraph package, but I re-arranged things such that I am pretty > sure that is not the problem. I realized just now I could get rid of the > igraph stuff altogether for debugging purposes if that would help. Let me > know about that. > > Thanks for your help. I hope you can track it down, because this kind of > speed degradation make me really hesitate to upgrade. > > Robin Cowan > _______________________________________________ > R-SIG-Mac mailing list > R-SIG-Mac@r-project.org > https://stat.ethz.ch/mailman/listinfo/r-sig-mac _______________________________________________ R-SIG-Mac mailing list R-SIG-Mac@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-mac
