[R] Using multicores in R

[Uwe Ligges]

On 03.12.2012 11:14, moriah wrote:
> Hi,
>
> I have an R script which is time consuming because it has two nested loops
> in it of at least 5000 iterations each, I have tried to use the multicore
> package but id doesn't seem to improve the elapsed time of the script(a
> shorter script for example) and I can't use the mcapply because of technical
> reasons.

Errr, but otherwise multicore does not have an effect ...

See package "parallel" that offers various functions for parallel 
computations. We cannot help much more if you do not tell us what the 
technical reasons are why mcapply() does not work.

Best,
Uwe Ligges



>
> I was wondering how can I make my script use more cores and memory because I
> am running it on a server and it is a shame that it uses only one core.


>
> Thanks!
> Moriah
>
>
>
>
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