Dear all, I know this problem was discussed many times in forum, however unfortunately I could not find any way out for my own problem. Here I am having Memory allocation problem while generating a lot of random number. Here is my description:
> rnorm(50000*6000) Error: cannot allocate vector of size 2.2 Gb In addition: Warning messages: 1: In rnorm(50000 * 6000) : Reached total allocation of 1535Mb: see help(memory.size) 2: In rnorm(50000 * 6000) : Reached total allocation of 1535Mb: see help(memory.size) 3: In rnorm(50000 * 6000) : Reached total allocation of 1535Mb: see help(memory.size) 4: In rnorm(50000 * 6000) : Reached total allocation of 1535Mb: see help(memory.size) > memory.size(TRUE) [1] 15.75 > rnorm(50000*6000) Error: cannot allocate vector of size 2.2 Gb In addition: Warning messages: 1: In rnorm(50000 * 6000) : Reached total allocation of 1535Mb: see help(memory.size) 2: In rnorm(50000 * 6000) : Reached total allocation of 1535Mb: see help(memory.size) 3: In rnorm(50000 * 6000) : Reached total allocation of 1535Mb: see help(memory.size) 4: In rnorm(50000 * 6000) : Reached total allocation of 1535Mb: see help(memory.size) And the Session info is here: > sessionInfo() R version 2.14.0 (2011-10-31) Platform: i386-pc-mingw32/i386 (32-bit) locale: [1] LC_COLLATE=English_United States.1252 LC_CTYPE=English_United States.1252 [3] LC_MONETARY=English_United States.1252 LC_NUMERIC=C [5] LC_TIME=English_United States.1252 attached base packages: [1] graphics grDevices utils datasets grid stats methods base other attached packages: [1] ggplot2_0.8.9 proto_0.3-9.2 reshape_0.8.4 plyr_1.6 zoo_1.7-6 loaded via a namespace (and not attached): [1] lattice_0.20-0 I am using Windows 7 (home version) with 4 GB of RAM (2.16GB is usable as my computer reports). So in my case, is it not possible to generate a random vector with such length? Note that generating such vector is my primary job. Later I need to do something on that vector. Those Job includes: 1. Create a matrix with 50,000 rows. 2. Get the row sum 3. then report some metrics on that sum values (min. 50,000 elements must be there). Can somebody help me with some real solution/suggesting? Thanks and regards, ______________________________________________ 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.
