[R-sig-hpc] compiling R 2.15.0 to link to open MPI

[Rodney Sparapani]

Jim Maas wrote:
> I use R in parallel on a cluster.  Our Sys Op has compiled the versions 
> for me, up to R 2.13.1 against openMPI libraries so that I can run 
> programmes across 404 cores.  I've just asked him to compile 2.15 for me 
> but he can't find how to connect it to openMPI.  Has that capability 
> disappeared or has the method of connecting changed?
> 
> Thanks
> 
> J
> 

Hi Jim:

Well, from my experience, you don't link OpenMPI/MPICH2/etc. with the
R binary per se.  You build R the usual way.  And, then you do an
R CMD INSTALL Rmpi.tgz

At that stage, you will need to be concerned with whether the 
appropriate headers and libraries exist.  This step will give somewhat 
informative feedback about that.

Rodney