[R] question about running out of memory on R

[jim holtman]

Do

?"Memory-limits"

and then look at

?memory.limit

I have an icon that starts R and have that as the command line
parameter.  You should be able to set that up.  You should be able to
use

memory.limit(2000)  # set limit to 2GB

in .Rprofile.



On 11/5/07, Johan Jackson <johan.h.jackson at gmail.com> wrote:
> Aha. Thanks Jim you rock. So my system is probably hitting that upper
> limit of 2-3GB (a 32 bit issue I assume). Looks like I need to go 64
> bit.
>
> BTW, --max-mem-size looks like a command line command. Can I execute
> something similar from within .Rprofile so that it does this each time
> I start R?
>
> Thanks again for your help,
>
> Johan Jackson
>
>
> On 11/5/07, jim holtman <jholtman at gmail.com> wrote:
> > Even when it does start using virtual memory (which you never want it
> > to do from a performance standpoint), there is still the physical
> > limitation (e.g., a 2-3GB on Windows depending on how you have it
> > configured) that you can not exceed.  Also the maximum memory is set
> > to:
> >
> > --max-mem-size=N
> > (Windows only) Specify a limit for the amount of memory to be used
> > both for R objects and working areas. This is set by default to the
> > smaller of 1.5Gb24 and the amount of physical RAM in the machine, and
> > must be between 32Mb and 3Gb.
> >
> > This is a parameter on the startup command.  On my machine I have 2GB
> > and let it default to 1.5GB.  This number should be less than the
> > physical memory on your system.  This is what is "runs out of".
> >
> >
> >
> > On 11/5/07, Johan Jackson <johan.h.jackson at gmail.com> wrote:
> > > Hi all,
> > >
> > > R newbie, but have been reading the boards and learning lots. I have
> > > read all documents & list-serve responses I could about R and memory
> > > but still no answer.
> > >
> > > QUESTION:
> > >
> > > When the sizes of your objects exceeds your available RAM, R switches
> > > to Virtual Memory right? If so, why does it so often run out of memory
> > > and return an "unable to allocate XXX KB" error shortly after
> > > switching to virtual memory when there is PLENTY of virtual memory to
> > > be had (I think)?
> > >
> > > I have noticed this on both my mac and my pc, so it doesn't seem to be
> > > OS specific.
> > >
> > > Any help in understanding this would be most appreciated!
> > >
> > >
> > >  - J Jackson
> > >
> > > ______________________________________________
> > > R-help at 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.
> > >
> >
> >
> > --
> > Jim Holtman
> > Cincinnati, OH
> > +1 513 646 9390
> >
> > What is the problem you are trying to solve?
> >
>


-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem you are trying to solve?