See ?"Memory-limits" and rw-FAQ Q2.9. Since you have already used more than 1Gb of what is presumably a 2Gb address space (we don't know your Windows version), it is not surprising that there is no 285Mb hole left.
On Mon, 24 Mar 2008, Ronnen Levinson wrote: > > Hi. > As shown in the simplified example below, I'm having trouble allocating > memory for large vectors, even though it would appear that there is more > than enough memory available. That is, even with a memory limit of 1500 MB, > R 2.6.1 (Win) will allocate memory for a first vector of 285 MB, but not for > a second vector of the same size. Forcing garbage collection does not seem > to solve the problem. > Can anyone explain why is this happening, and how to fix it? > Thanks, > Ronnen. > P.S. E-mailed CCs of posted replies would be appreciated. > > rm(list=ls(all=TRUE)) > > gc() > used (Mb) gc trigger (Mb) max used (Mb) > Ncells 143465 3.9 350000 9.4 350000 9.4 > Vcells 88573 0.7 50380943 384.4 131023877 999.7 > > memory.limit() > [1] 1535.875 > > n <- 8640 * 4320 > > x=rep(1/3, n) > > memory.size() > [1] 578.8543 > > gc() > used (Mb) gc trigger (Mb) max used (Mb) > Ncells 143471 3.9 350000 9.4 350000 9.4 > Vcells 37413375 285.5 78720219 600.6 131023877 999.7 > > y=rep(1/7, n) > Error: cannot allocate vector of size 284.8 Mb > > memory.size() > [1] 578.8543 > > gc() > used (Mb) gc trigger (Mb) max used (Mb) > Ncells 143471 3.9 350000 9.4 350000 9.4 > Vcells 37413375 285.5 78720219 600.6 131023877 999.7 > > version > _ > platform i386-pc-mingw32 > arch i386 > os mingw32 > system i386, mingw32 > status > major 2 > minor 6.1 > year 2007 > month 11 > day 26 > svn rev 43537 > language R > version.string R version 2.6.1 (2007-11-26) > > -- > Ronnen Levinson, Ph.D. > scientist, Lawrence Berkeley National Lab > The Onion horoscope: Pisces February 19 - March 20 You will soon be > unwillingly forced into a flurry of activity when you are chosen to host the > 2014 Winter Olympiad. > ______________________________________________ > 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. > -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ 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.
