On Mon, Dec 15, 2008 at 01:16:46PM -0500, Whit Armstrong wrote: > I have a network of four machines set up. I'm having trouble spawning > my slaves on these machines. > > All the examples I have found so far use makeCluster with type="MPI", > and I guess I'm missing some kind of cluster configuration in my > environment variables because all my clusters are formed on the > machine where my initial session is running. > > Can anyone refer me to a link that illustrates how to set up the > environment for MPI (listing node names, number of slots, etc) that > will allow the makeCluster command take advantage of the other nodes?
It depends on which MPI library you use. I like Open MPI. > Thanks, > Whit > > > simple example: > > library(Rmpi) > library(snow) > > cl <- makeCluster(2, type = "MPI") You must call R (or r or Rscript) 'inside' orterun (or mpirun) which allows you to set hostnames on that invocation. See my UseR 2008 tutorial for some examples. Dirk -- Three out of two people have difficulties with fractions. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
