[R] Dual Core vs Quad Core
s.blomberg1 at uq.edu.au
Tue Dec 18 04:49:48 CET 2007
I've been running R on a quad-core using Debian Gnu/Linux since March
this year, and I am very pleased with the performance.
On Mon, 2007-12-17 at 20:13 -0500, Andrew Perrin wrote:
> On Mon, 17 Dec 2007, Kitty Lee wrote:
> > Dear R-users,
> > I use R to run spatial stuff and it takes up a lot of ram. Runs can take hours or days. I am thinking of getting a new desktop. Can R take advantage of the dual-core system?
> > I have a dual-core computer at work. But it seems that right now R is using only one processor.
> > The new computers feature quad core with 3GB of RAM. Can R take advantage of the 4 chips? Or am I better off getting a dual core with faster processing speed per chip?
> > Thanks! Any advice would be really appreciated!
> > K.
> If I have my information right, R will use dual- or quad-cores if it's
> doing two (or four) things at once. The second core will help a little bit
> insofar as whatever else your machine is doing won't interfere with the
> one core on which it's running, but generally things that take a single
> thread will remain on a single core.
> As for RAM, if you're doing memory-bound work you should certainly be
> using a 64-bit machine and OS so you can utilize the larger memory space.
> Andrew J Perrin - andrew_perrin (at) unc.edu - http://perrin.socsci.unc.edu
> Associate Professor of Sociology; Book Review Editor, _Social Forces_
> University of North Carolina - CB#3210, Chapel Hill, NC 27599-3210 USA
> R-help at r-project.org mailing list
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
Simon Blomberg, BSc (Hons), PhD, MAppStat.
Lecturer and Consultant Statistician
Faculty of Biological and Chemical Sciences
The University of Queensland
St. Lucia Queensland 4072
Room 320 Goddard Building (8)
T: +61 7 3365 2506
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