On 9 October 2008 at 09:18, Sean Davis wrote: | We have spent some time setting up Sun Grid Engine and OpenMPI on a | group of linux boxes. I have created a parallel environment and | everything seems to be working. I have Rmpi 0.5.5-5 installed on all | machines. I would like to start an interactive R session using, say, | 8 processors and then start the Rmpi cluster. I haven't been able to | find what needs to be done in order to accomplish this task. Is | anyone using R in such an environment that can point me in the right | direction?
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. Hope this helps, Dirk [1] http://dirk.eddelbuettel.com/presentations.html -- 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.
