I thought I'd share this with the list since it appears to provide a quick fix to some memory problems, and I haven't see it discussed in relation to R.
To reallocate virtual memory from kernel-mode to user-mode in 32-bit Vista or Windows 7 one can use the increaseuserva boot option value. See http://msdn.microsoft.com/en-us/library/aa906211.aspx On my 4GB Vista machine, R is now able to use 3GB memory (previously at the default value of 2GB). Here's the method: Open cmd.exe as administrator and type BCDEdit /set IncreaseUserVA <value> where <value> is between 2048 and 3072 (ie 2-3GB), then reboot. Given that you've set the --max-mem-size flag, or used the memory.limit function in an R session to increase R's memory allocation, your R processes should now be allowed to access up to 3GB of virtual memory. I am not a Windows expert, so if anyone knows of disadvantages of using this method *please* post a response. best, Kingsford Jones ______________________________________________ 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.
