[R] Out of memory

[Liaw, Andy]

I have run into similar problems occasionally on Windoze NT.  For whatever
reason, R refuses to do anything, including q("no").  The only way out was
to kill it via Task Manager.  Not sure how to make it reproducible.
Unfortunately Uwe's comments are not exactly helpful, though mostly true.

Cheers,
Andy

> -----Original Message-----
> From: Uwe Ligges [mailto:ligges at statistik.uni-dortmund.de]
> Sent: Saturday, August 17, 2002 12:27 PM
> To: Nikolaus Hansen
> Cc: r-help at stat.math.ethz.ch
> Subject: Re: [R] Out of memory
> 
> 
> Nikolaus Hansen wrote:
> > 
> > During a R session (Version 1.4.1 under Windows) I ended up 
> getting the following error message:
> 
> R-1.5.1 is recent.
> 
> 
> >   Error: vector memory exhausted (limit reached?)
> > 
> > independently of the command like rm(something), q(), ls(), 
> gc(), memory.size(), memory.limit(300000000),
> 
> ?memory.limit says: 
> 
> Usage: memory.limit(size = NA)
> Arguments: size  [...] request a new limit, in Mb. 
>                                                ^^
> So something like memory.limit(500) is more reasonable, 
> depending on the
> size of RAM in your machine.
> It is much more convenient to set  --mex-mem-size=500M  at the command
> line, how it works is described in the R for Windows FAQs.
> 
> 
> > What could I do now to save my data? How could I prevent 
> this situation?
> 
> a) Be sure a reasonable amount of memory was really allocated.
> b) Rewrite your R code to consume less memory and think about what is
> needed in memory at one time. Can you divide the computations into
> "smaller" ones releted to memory usage?
> c) Buy some more RAM.
> d) Wait ten years for a much bigger computer. ;-)
> 
> Uwe Ligges
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