[R] help on Rmpi

Zhiliang Ma zma at jhu.edu
Tue Aug 11 19:42:35 CEST 2009

Dear R Users,

I'm using Rmpi package for paralleling computing. It's very useful.
But I have two question:

1. before running processes on slaves, all the data should be sent to
them. however, if i forget to broadcast some of the data, the master
will freeze, and I have to kill the process manually. I'm wondering
whether it is possible to let master stop automatically and show error
message that some data are not available on slaves.

2. I observed that the results obtained via Rmpi are usually a little
different from those obtained via non-parallel process. Is that
possible or i have done something wrong?


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