From p.dalgaard at biostat.ku.dk  Fri Sep  2 18:48:24 2005
From: p.dalgaard at biostat.ku.dk (Peter Dalgaard)
Date: 02 Sep 2005 18:48:24 +0200
Subject: [Rd] 64 bit R for Windows
In-Reply-To: <84B25EE9B4CB1A47A197E6AE76790D7801426D9B@mail1.lajolla.iattc.org>
References: <84B25EE9B4CB1A47A197E6AE76790D7801426D9B@mail1.lajolla.iattc.org>
Message-ID: <x2u0h3wh47.fsf@turmalin.kubism.ku.dk>

"Milton Lopez" <mlopez at iattc.org> writes:

> I appreciate the update. We will consider using Linux, which leads me to
> one more question: what is the maximum RAM that R can use on each
> platform (Linux and Windows)?
> 
> Thanks again for your prompt responses.

On Win32, something like 3GB. Maybe a little more on Linux32, but
there's a physical limit at 4GB. 

On Linux 64, the motherboards set the limit in practice, 32GB systems
have been reported working and I think at least 64GB should be
possible. I seem to recall that the maximum _virtual_ memory is not
quite 2^64, but it will be pretty huge (2^48, 256TB)?.

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



[Rd] 64 bit R for Windows
Peter Dalgaard