[R] memory limit problem

[Z P]

we have two server, one is unix (1280M) and linux (2319872k), how can I set 
the max?

for the Linux one,

R --max-vsize=2319872k --max-nsize=2319872k

Then I use

>mem.limits()
nsize vsize
   NA    NA

It seems the limits are not set at all

I want to define an array

>a<-array(0,rep(2,28))
Error: cannot allocate vector of size 2097152 Kb

next I type

>a<-array(0,rep(2,27))

It is ok. then

>a<-array(0,rep(2,28))
Error: vector memory exhausted (limit reached?)

Is there any way to help? In fact, I am now using some array(0,rep(2,21)), 
the program run some time then fail, I can not trace what happened since I 
run R in batchs under Linux. Does this happen probably due to the memory 
exhaust? (for some array(0,rep(2,10)), my codes work well).




>From: Prof Brian Ripley <ripley at stats.ox.ac.uk>
>To: Z P <nusbj at hotmail.com>
>CC: r-help at stat.math.ethz.ch
>Subject: Re: [R] memory limit problem
>Date: Mon, 5 Apr 2004 07:12:02 +0100 (BST)
>
>On Linux, you can set memory limits in the shell you use to run R (via
>command limit or ulimit, depending on the shell).
>
>Yes, there can be a need to set memory limits on Linux too.  However, the
>problem was that (apparently, as we have not had a clear report), the
>available memory was not all being used, and that is not seen on Linux (or
>Solaris or ...).
>
>On Mon, 5 Apr 2004, Z P wrote:
>
> > Do you mean in Linux, there is no need to set memory limit? If needed, 
>how
> > to set it? Thanks.
>
> > >From: "Roger D. Peng" <rpeng at jhsph.edu>
> > >
> > >In general, this is not an R problem, it is a Windows problem.  I find 
>that
> > >these types of memory problems do not appear on Linux, for example.
>
>--
>Brian D. Ripley,                  ripley at stats.ox.ac.uk
>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
>
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