Hello all, I am not certain whether this issue pertains to the Leopard OS or to R or some combination. I have been running 64 bit R for the first time over the last couple of weeks and so am still learning the ins and outs of it. I have 18GB RAM on a 3.0 2008 Mac Pro. My R version is posted below.
>From the "top" command in terminal, I'm showing 5GB of inactive RAM. >From the Leopard Activity Monitor page, with regard to inactive memory, it says "This information [inactive RAM] is no longer being used and has been cached to disk, but it will remain in RAM until another application needs the space. Leaving this information in RAM is to your advantage if you (or a client of your computer) come back to it later." However, yesterday R accessed 12GB RAM and then started swapping to hard drive (the pageouts went from 0 to 327000), all the while that 5GB inactive RAM just sat right where it was. I had been expecting R to access this inactive RAM once it ran out of free RAM rather than swapping to hard drive. I can't believe that the Leopard OS is this inefficient with memory allocation, so I'm guessing I'm not understanding something. Does anyone understand why this might be happening, and/or have any ideas about how to get R to access that inactive memory? Thank you! Matt > sessionInfo() R version 2.6.2 alpha (2008-01-29 r44238) i386-apple-darwin9.1.0 locale: C attached base packages: [1] stats graphics grDevices utils datasets methods base loaded via a namespace (and not attached): [1] tools_2.6.2 > R.Version() $platform [1] "i386-apple-darwin9.1.0" $arch [1] "i386" $os [1] "darwin9.1.0" $system [1] "i386, darwin9.1.0" $status [1] "alpha" $major [1] "2" $minor [1] "6.2" $year [1] "2008" $month [1] "01" $day [1] "29" $`svn rev` [1] "44238" $language [1] "R" $version.string [1] "R version 2.6.2 alpha (2008-01-29 r44238)" -- Matthew C Keller Asst. Professor of Psychology University of Colorado at Boulder www.matthewckeller.com _______________________________________________ R-SIG-Mac mailing list [email protected] https://stat.ethz.ch/mailman/listinfo/r-sig-mac
