Dear all, 

I wonder, if anybody experiences similar problems and if there are any simple solutions to be suggested. We observe that R causes a lot of network traffic and thus slows down the performance of the whole network. When tracing the network traffic on the machine which serves the R installation via NFS, we see thousands of requests at initialization of R processes and regular calls, probably to shared libraries. Is there a way to compile or run R such that it causes less load on the network? 

Here is some information  on our installation:
 - We use a single installation of R (version 2.3.1) loaded over NFS
 - there are approximately 1500 packages installed using ~8GB of disk
 - We use R on a queuing system running up to 50 processes in parallel

The load on the machine which serves the R installation frequently rises up to 5 or so although it is a dedicated machine.
Any hints towards measures against network load are highly appreciated.

Thanks,
Claudio


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Claudio Lottaz
Computational Diagnostics Group
Department for Computational Molecular Biology
Max-Planck-Institute for Molecular Genetics
Ihnestr. 73, D-14195 Berlin (Germany)
office: 2.116, phone: +49 30 8413 1177, fax: +49 30 8413 1176
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