Re: [R] Which Linux OS on Athlon amd64, to comfortably run R?

From: Peter Dalgaard <>
Date: Wed, 05 Dec 2007 20:04:09 +0100

Prof Brian Ripley wrote:
> Note that Ottorino has only 1GB of RAM installed, which makes a 64-bit
> version of R somewhat moot. See chapter 8 of
Only somewhat. The Opteron actually has 1GB too (Hey, it was bought in 2004! And the main point was to see whether 64 bit builds would work at all) but 16GB of swap. So large data sets will fit but be processed slowly.
> I would install a i386 version of R on x86_64 Linux unless I had 2Gb
> or more of RAM. I don't know how easily that works on Ubuntu these
> days, but I would try it.
It's not like the 64 bit build feels slow for basic usage, though. I don't think you need to bother with mixing architectures unless you have applications where it really matters (CPU intensive, but below 32-bit addressing limitations). Buying more RAM is much to be preferred.

Now what kind of RAM does my Opteron board take... ?

   O__  ---- Peter Dalgaard             Ă˜ster Farimagsgade 5, Entr.B
  c/ /'_ --- Dept. of Biostatistics     PO Box 2099, 1014 Cph. K
 (*) \(*) -- University of Copenhagen   Denmark          Ph:  (+45) 35327918
~~~~~~~~~~ - (                  FAX: (+45) 35327907

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