[R] cluster/snow question
schmidb at ibe.med.uni-muenchen.de
Tue Sep 9 08:11:34 CEST 2008
in SNOW you have to start a cluster with the command
> cluster <- makeCluster(#nodes)
The object "cluster" is a list with an object for each node and each
object again is a list with all informations (rank, comm, tags)
The size of the cluster is the length of the list.
> #nodes == length(cluster)
E.g. the rank for node one you can get by
tolga.i.uzuner at jpmorgan.com schrieb:
> Dear R Users,
> I am attempting to use the snow package for clustering. Is there a way to
> identfy, in the environment of each node, a rank for that node and also,
> the total size of the cluster ?
> By way of analogy, I am looking for the functions in snow equivalent to
> mpi.comm.rank() and mpi.comm.size() from RMPI, in case that makes things
> Thanks in advance,
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Dipl.-Tech. Math. Markus Schmidberger
IBE - Institut für medizinische Informationsverarbeitung,
Biometrie und Epidemiologie
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Mail: Markus.Schmidberger [at] ibe.med.uni-muenchen.de
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