Jason Liao <JLIAO <at> hes.hmc.psu.edu> writes: > I care a lot about R's speed. So I decided to give REvolution's R > (http://revolution-computing.com/) a try, which bills itself as an > optimized R. Note that I used the free version. > > My machine is a Intel core 2 duo under Windows XP professional. The code > I run is in the end of this post. > > First, the regular R 1.9. It takes 2 minutes and 6 seconds, CPU usage > 50% > > Next, REvolution's R. It takes 2 minutes and 10 seconds, CPU usage 100%. > > In other words, REvolution's R consumes double the CPU with slightly > less speed.
The fact that it is the same time with only the 50%/100% makes me think this is an artifact of the CPU indicator. Try to assign only one CPU to the REvolution task. Wild guess: also 2 minutes plus minus Dieter ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
