[R] 1024GB max memory on R for Windows XP?

Liaw, Andy andy_liaw at merck.com
Fri Feb 20 22:19:32 CET 2004

For vectors and matrices (which are vectors with dim attributes), I believe
the memory need to be contiguous, but not for lists.

You still have not indicated which particular "UNIX" you are using.  On the
64-bit Linux we have here with 16GB RAM, the R (compiled as 64-bit
application) process can use nearly all the physical RAM available, without
any setting.


> From: Jonathan Greenberg
> Does UNIX R have a similar command, or does it just take as 
> much memory as
> it needs?  On a related note, does the memory have to be contiguous on
> either type of system?  I am not hitting my max memory even 
> with the 2gb max
> mem set (I'm not even hitting 1.5gb) -- it is giving me 
> errors such as:
> Error: cannot allocate vector of size 387873 Kb (I should 
> point out that
> this value changes when I simply rerun the previous line).
> There isn't really an easy way of getting around this, since 
> I'm using the
> prune.tree function -- seeing as how its 1 line of code, I 
> don't see how to
> optimize this.
> --j
> On 2/20/04 5:40 AM, "James MacDonald" <jmacdon at med.umich.edu> wrote:
> > --max-mem-size=2000M
> -- 
> Jonathan Greenberg
> Graduate Group in Ecology, U.C. Davis
> http://www.cstars.ucdavis.edu/~jongreen
> http://www.cstars.ucdavis.edu
> AIM: jgrn307 or jgrn3007
> MSN: jgrn307 at msn.com or jgrn3007 at msn.com
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