Re: [R] Dual Core vs Quad Core

2007-12-18 Thread Luke Tierney
On Tue, 18 Dec 2007, Prof Brian Ripley wrote: > On Tue, 18 Dec 2007, S Ellison wrote: > >> Hiding in the windows faq is the observation that "R's computation is >> single-threaded, and so it cannot use more than one CPU". So multi-core >> should make no difference other than allowing R to run with

Re: [R] Dual Core vs Quad Core

2007-12-18 Thread Prof Brian Ripley
On Tue, 18 Dec 2007, S Ellison wrote: > Hiding in the windows faq is the observation that "R's computation is > single-threaded, and so it cannot use more than one CPU". So multi-core > should make no difference other than allowing R to run with less > interruption from other tasks. That is often

Re: [R] Dual Core vs Quad Core

2007-12-18 Thread S Ellison
Hiding in the windows faq is the observation that "R's computation is single-threaded, and so it cannot use more than one CPU". So multi-core should make no difference other than allowing R to run with less interruption from other tasks. That is often a significant advantage, though. >>> Andrew

Re: [R] Dual Core vs Quad Core

2007-12-17 Thread Saeed Abu Nimeh
I ran a bayesian simulation sometime ago and it took me 1 week to finish on a debian box (Dell PE 2850 Dual Intel [EMAIL PROTECTED] 6GB). I think it depends on the setting of the experiment and whether the code can be parallelized. Simon Blomberg wrote: > I've been running R on a quad-core using

Re: [R] Dual Core vs Quad Core

2007-12-17 Thread Simon Blomberg
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. Simon. 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 tak

Re: [R] Dual Core vs Quad Core

2007-12-17 Thread Andrew Perrin
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 r

[R] Dual Core vs Quad Core

2007-12-17 Thread Kitty Lee
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