[R] How is R working in multicore and multiprocessor environment?

[Uwe Ligges]

Hesen Peng wrote:
> My Dear R buddies,
> 
> I'm feeling ashamed that I've been running my R program on some
> servers for a while but do not know exactly how R is working. The
> servers are chained together using Sun Grid Engine. Each node has 8
> quad-core CPUs. I wonder how many cores and CPUs are used by a simple
> single-thread R program. Thanks a lot.


The quick answer to your question is easy: In principle 1 core.
Of course, you can make use of some parallelization framework. I'd 
suggest you start looking at snow and decide which underlying mechanism 
you are going to choose afterwards.

Best wishes;
uwe Ligges



> Best wishes,
>