[R] Windows R 1.8.0 hangs when Mem Usage >1.8GB
andy_liaw at merck.com
Tue Nov 25 20:05:30 CET 2003
Sorry. I need to retract my claim. There seems to be a 3G limit, even
though the OS could handle nearly 8G. (I can have two simultaneous R
processes each using near 3G.)
On another note, on our dual Opteron box R (compiled as 64-bit) could easily
use nearly all the 16G in that box (that's one of the reason for having that
> From: Paul Gilbert [mailto:pgilbert at bank-banque-canada.ca]
> Liaw, Andy wrote:
> > With a custom compiled kernel, I've run R processes that
> used more than 5GB
> > of RAM on a Linux box with 8GB RAM and dual Xeons. So it
> seems to work on
> > 32-bit Linux with big memory kernel.
> > Andy
> I'm curious about this. I believe the address space limit of a 32-bit
> processor is 4G, and I thought Xeons were 32-bit processors.
> How can a
> single process exceed the address space?
> Paul Gilbert
> >>From: Duncan Murdoch [mailto:dmurdoch at pair.com]
> > [snip]
> >>Normally the maximum memory allowed for any process in
> >>Windows is 2 GB. It's possible to raise that to 3 GB but R
> >>1.8 doesn't know how, so that's an absolute upper limit.
> >>Version 1.9 may be able to go up to 3 GB, but beyond that
> >>you'll probably need a 64 bit processor: as far as I know
> >>all the 32 bit OS's limit each process to 2 or 3 GB, because
> >>they reserve 1 or 2 GB for themselves.
> > [snip]
> >>Duncan Murdoch
> >>R-help at stat.math.ethz.ch mailing list
> >>https://www.stat.math.ethz.ch/mailman/listinfo> /r-help
> > ______________________________________________
> > R-help at stat.math.ethz.ch mailing list
> > https://www.stat.math.ethz.ch/mailman/listinfo/r-help
More information about the R-help