Hi, On Fri, Feb 5, 2010 at 9:24 PM, Matthew Keller <mckellerc...@gmail.com> wrote: > Hi all, > > I'm on a Linux server with 48Gb RAM. I did the following: > > x <- > big.matrix(nrow=20000,ncol=500000,type='short',init=0,dimnames=list(1:20000,1:500000)) > #Gets around the 2^31 issue - yeah! > > in Unix, when I hit the "top" command, I see R is taking up about 18Gb > RAM, even though the object x is 0 bytes in R. That's fine: that's how > bigmemory is supposed to work I guess. My question is how do I return > that RAM to the system once I don't want to use x any more? E.g., > > rm(x) > > then "top" in Unix, I expect that my RAM footprint is back ~0, but it > remains at 18Gb. How do I return RAM to the system?
Maybe forcing R to do garbage collection might help? Try calling `gc()` after your call to `rm(x)` and see what `top` tells you. Did that do the trick? -steve -- Steve Lianoglou Graduate Student: Computational Systems Biology | Memorial Sloan-Kettering Cancer Center | Weill Medical College of Cornell University Contact Info: http://cbio.mskcc.org/~lianos/contact ______________________________________________ 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.
