[R-sig-hpc] Snow Not Distributing

Brian G. Peterson brian at braverock.com
Sat Jan 21 00:19:32 CET 2012

On Fri, 2012-01-20 at 15:53 -0600, Jeff Allen wrote:
> I have been able to successfully setup snow (0.3-5) and Rmpi (0.5-9) on 
> my RedHat 5 cluster, and have it working perfectly for jobs that don't 
> span multiple nodes.
> We're using Torque for resource management, so I start a job with access 
> to multiple nodes and load Snow. Unfortunately, not matter what size 
> cluster I try to make, all of the workers end up running on the same 
> host -- leaving the other hosts idle.
> I'm no expert with MPI or snow, so I'm really not sure how to approach 
> debugging this.
> Any input would be much appreciated!

I would suggest trying a simple 'hello world' type script just using
Rmpi, e.g. one of the examples from Dirk's Intro to HPC with R
presentation (I'm not somewhere I can easily search for it, but you
should be able to find it on Dirk's site or a link in the list archives


   - Brian

Brian G. Peterson
Ph: 773-459-4973
IM: bgpbraverock

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