[R] re| memory.limit()

ripley@stats.ox.ac.uk ripley at stats.ox.ac.uk
Wed Nov 20 22:09:27 CET 2002


On Wed, 20 Nov 2002, Paul Gilbert wrote:

> > The reason for the 1Gb limit is to do with the limited total space Windows
> > gives (2Gb or 3Gb across all processes).
>
> Does Windows (2000/XP) impose this limit even if there is more physical memory?

The 32-bit address space limit is 4Gb.  Of that Windows NT reserves
address space of 1Gb for itself in Server versions, 2Gb in workstation
versions.  Or so the docs say.

The limits of 32-bit addressing are beginning to hit home, which is why
the major workstation manufacturers went to 64-bit long ago.  (Even my
1997 Sun can run 64-bit address spaces.)

-- 
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 272860 (secr)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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