On Wed, 19 Jun 2019 at 07:42, King Jiefei <szwj...@gmail.com> wrote: > > Hello Kevin and Iñaki, > > Thanks for your quick responses. I sincerely appreciate them! I can see how > complicated it is to interact with R in C. Iñaki's suggestion is very > helpful, I saw there is a lot of performance gain by turning the flag on, but > sadly the best performance it can offer still cannot beat R itself. It is > interesting to see that C++ is worse than R in this special case despite > there is a common belief that C++ code is the fast one... Anyway, thanks > again for your suggestions and reference!
That is misleading. C++ code is faster, that's beyond doubt. But you are not running C++ code here, you are running R code. So what is faster, running R code or executing something that then runs R code? Obviously the first thing is the baseline, and from there, it can only get worse as you add more layers on top of it. Iñaki ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
