[R] Need advice on using R with large datasets

Peter Dalgaard p.dalgaard at biostat.ku.dk
Tue Apr 13 18:33:07 CEST 2004

"Roger D. Peng" <rpeng at jhsph.edu> writes:

> I've been running R on 64-bit SuSE Linux on Opterons for a few months
> now and it certainly runs fine in what I would call standard
> situations.  In particular there seems to be no problem with
> workspaces > 4GB.  But I seldom handle single objects (like matrices,
> vectors) that are > 4GB.  The only exception is lists, but I think
> those are okay since they are composed of various sub-objects (like
> Peter mentioned).

I just tried, and x <- numeric(1e9) (~8GB) doesn't appear to be a
problem, except that it takes "forever" since the machine in question
has only 1GB of memory, and numeric() zero fills the allocated

   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)             FAX: (+45) 35327907

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