Hi Zack. I don't know how helpful this is but I use R on 64bit ubuntu for the analysis of large microarray datasets. R may well be taking advantage of all your memory but the objects it's creating are too big. You could run 'top' in another terminal window to examine this behaviour. If R is using all your memory then I suppose you'll have to install some more.
Cheers iain zack holden <[EMAIL PROTECTED]> wrote: Dear list, I've recently installed R on a 64 bit machine with 8 GB of RAM. I set this computer up as a dual-boot system, with windows XP 64 and Ubuntu 7.10. I downloaded the Linux 64 bit version of R and installed it. I'm trying to run rather large Random forest models and was running into severe memory limitations with my old windows 32 bit machines. When I run Random Forest models on my new machine, I get the error message: Error: cannot allocate vector of size 2.1 GB. I'm a new Linux user, but I thought that R under Linux would by default take advantage of all available memory. I've searched previous posts and found only 1 thread (posted by David Katz) that didn't really help. Do I need to specify that the Ubuntu/Linux OS use all 8 Gigs of RAM? Could I have done something wrong when I downloaded and installed R? I'd appreciate any advice. Thanks in advance, Zack [[alternative HTML version deleted]] ______________________________________________ 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. [[alternative HTML version deleted]] ______________________________________________ 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.
