[Rcpp-devel] OpenMP and Rinside

[David Ibarra Gómez]

Hi Peter,

        I'm looking at MPI examples, thank you for the advice.

But If It's possible to use several instances with MPI. I think It should be possible with OpenMP.

Thank you





David Ibarra Gomez


-----Mensaje original-----
De: Peter Aberline [mailto:Peter.Aberline at rms.com]
Enviado el: martes, 31 de julio de 2012 12:32
Para: David Ibarra Gómez; rcpp-devel at lists.r-forge.r-project.org
Asunto: RE: OpenMP and Rinside

> From: rcpp-devel-bounces at lists.r-forge.r-project.org
> [mailto:rcpp-devel-bounces at lists.r-forge.r-project.org] On Behalf Of
> David Ibarra Gómez

> I was mixing RInside with OpenMP. When I try to run the software, I get a message in three of the four threads (4 Cores Multicore).

> Exception caught: can only have one RInside instance Exception caught:
> can only have one RInside instance Exception caught: can only have one
> RInside instance


Hi David,

It's my understanding is that the RInside class is a singleton as R is strictly single threaded. The message  you are seeing if an exception thrown because the singleton constraint is violated.

There are some examples that ship with RInside which demonstrate the use of multiple RInside processes using MPI. They might help you achieve the parallelism you are wanting.

Correct me if I'm wrong, Dirk.

Thanks
Peter


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