> From: Douglas Bates [mailto:[EMAIL PROTECTED]
>
> "Liaw, Andy" <[EMAIL PROTECTED]> writes:
>
> > 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
> > box).
>
> Does "could" mean you have verified that it did or is this a
> theoretical statement? I.e., have you compiled and tested R on your
> dual Opteron?
Given my questionable memory of things, this question is very fair.
Here's the evidence:
> x <- matrix(0, 5e5, 5e5)
> x2 <- matrix(0, 5e5, 5e5)
> gc()
used (Mb) gc trigger (Mb)
Ncells 413379 22.1 741108 39.6
Vcells 1783900405 13610.1 1784288128 13613.1
Best,
Andy
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