[R-SIG-Mac] R multi-cpu and 64 bit
luke at stat.uiowa.edu
Fri Nov 3 05:31:38 CET 2006
I hope in the next month or two to start looking into using multiple
threads in R's vectorized arithmetic system on multiprocessor systems.
Preliminary experiments suggest that this might be useful for some of
the more intensive functions in the math library, but It's not yet
clear whether this will pay off enough to warrant reorganizations that
might be needed -- we should know more before too long.
On Thu, 2 Nov 2006, Thomas Lumley wrote:
> On Thu, 2 Nov 2006, elw at stderr.org wrote:
>> Using SNOW, or MPI, or some careful batch programming to split up your
>> tasks across CPUs - yes.
>> This is the same sort of thing you'd likely face in Stata -- unless
>> they've invested a HUGE amount of effort in making threaded/parallelized
>> computations "easier".
> It turns out that they have. This is made easier for them by the
> relatively limited data model, but it is still pretty impressive.
> The Stata people really do have a clue, surprising as this seems when you
> first look at their macro language (and even that improves on further
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