You need to set the /MULTIPLEINSTANCES flag on the splus.exe command line.
I have a dual core T2500 and can run multiple sessions of S-PLUS
concurrently.
With 7.0.6 S-PLUS on XPSP2 S-PLUS also attempts to launch on a different
processor each time. You will need a license that will permit concurrent
sessions, but it does not require any more tokens.
John James
Mango Solutions
-----Original Message-----
From: Rob Campbell [mailto:rob@robertcampbell.co.uk]
Sent: 22 August 2006 13:42
To: Kamil Toth
Cc: s-news@lists.biostat.wustl.edu
Subject: Re: [S] dual-core
Kamil Toth wrote:
> Folks:
> I need an advise from somebody well versed in computers. I have bought a
> new laptop, Dell Inspiron 9400. This is a pretty powerful dual core
> machine. I found it much faster than my previous Toshiba-Centrino, and
> of course I feel good about that. But what I have noticed is that each
> of the processors works only 50% of its time, that means that I have no
> advantage of its "dual-coreness" when I work in s-plus. Is that possible
> to somehow take more from a dual core machine? Maybe there is some kind
> of settings in S-PLUS or in OS?
> thank you
I'm pretty sure that S-Plus will only make use of one core at a time. A
program has to be specifically written such that it will take advantage
of multiple cores and for most software this is currently not the case.
For some software applications, such as Matlab, you could run two
instances of the program (one on each core) share work between these
using custom-written code. However, unless you're running some serious
number-crunching this won't be worth your while. I think S-Plus will
only run on one core at a time. They might be doing something cheeky
like asking for a separate licence for each core, though. Nothing would
surprise me.
The main advantage of your dual core is that you can have one core fully
loaded crunching in SPlus, whilst the other is largely idle--allowing
you to work on other applications normally. For this to work well (at
all?) your OS needs to support this.
http://www.webopedia.com/DidYouKnow/Hardware_Software/2005/dual_core.asp
--
Rob Campbell - Research Scientist
Autistic Bacteriophage Research Group:
"We provide hope for disadvantaged `phages"
www.autisticBacteriophage.notlong.com
Oxford
~ www.robertcampbell.co.uk ~
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