On Mon, 19 May 2008, Charles Plessy wrote:
Le Mon, May 19, 2008 at 07:39:11AM +0100, Prof Brian Ripley a écrit :
On Sun, 18 May 2008, Anh Tran wrote:
I recently found out that R does not utilize fully the Duo Core capability
when you only run one instance of R.
How surprising was that? Do you have any programs that do? Very few
Windows programs make effective use of multiple CPUs, and of those that
do, they do not do so for the sort of tasks R is running routinely.
Hello,
actually, when I was (wrongly) plotting a 1,500,000 × 8 data frame and
had problems because the plot window was redrawn very frequently, I
wondered whether this would be one task that could be given to a separate
CPU than the one that deals with the command line interface of R. Do you
think that it would be possible?
Not at present. There are other reasons to want to do graphics
interaction in a separate thread, but there are complex synchronization
issues. (Suppose you start plotting on a device that is currently
repainting?) We are moving in that direction, slowly.
Best regards,
--
Charles Plessy
Wakō, Saitama, Japan
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--
Brian D. Ripley, [EMAIL PROTECTED]
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
______________________________________________
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