[R] Running R under Sun Grid Engine with OpenMPI tight integration

Chi Chan chichan2008 at gmail.com
Thu Oct 9 17:07:58 CEST 2008

On Thu, Oct 9, 2008 at 9:02 AM, Dirk Eddelbuettel <edd at debian.org> wrote:
> You could have a look at the slides from my UseR! 2008 tutorial [1] on
> 'high-performance computing with R' which covered Open MPI / Rmpi and
> includes examples.
> It may just be that you are expecting something that cannot be done.  There
> is no 'R session on 8 processors'.  R is still single-threaded, and neither
> Open MPI nor the Sun Grid Engine changes that.  But what you can do is to
> start R on a node in your cluster and then use Open MPI to distribute load
> across the 8 processors.  There are examples in my slides.

So R uses MPI for task distribution only? That sounds like not very
fine grained parallelism.

Can I use rsh to start remote R instead of MPI?


> Hope this helps, Dirk
> [1] http://dirk.eddelbuettel.com/presentations.html
> --
> Three out of two people have difficulties with fractions.
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