[R] Options to extend memory limit

Sebastian P. Luque spluque at gmail.com
Thu Oct 11 16:55:18 CEST 2012

On Thu, 11 Oct 2012 14:45:16 +0200,
<jennifer.moeller-gulland at de.pwc.com> wrote:

> Dear All, at the moment I am using R for calculations of large
> databases.  Unfortunately, R only manages to complete certain
> operations at some times, and not at others. I usually get the error
> message "cannot allocate vector of size XX"

> I am using the 64-bit version with Windows 7. While my computer has 8
> RAM, I do have a feeling that R cannot use all of it.

> Searching online, I found that you can increase the memory with the
> options --max-mem-size/ --max-ppsize or change the environment
> variable R_MAX_MEM_SIZE to "allow deep recursion or large and
> complicated calculations to be done"

> Unfortunately, I am not very knowledgable yet on how to use R and I
> did not quite manage to use the commands successfully. Could you
> please tell me whether these do make sense for my case and if so how
> (and at what stage of the process) I can use them?

Are you sure you're using the 64 bit R executable which comes with the R


More information about the R-help mailing list