Is it no longer possible to start a cluster interactively with MPI?
I just tried to run an old script interactively, but it now fails.

warmstrong@research:~$ R
> library(Rmpi)
> library(snow)
>  cl <- makeCluster(4,"MPI")
[research:08918] [[33202,1],0] routed:binomial: Connection to lifeline
[[33202,0],0] lost
warmstrong@research:~$

our MPI setup works with slurm and orterun.  I just can't seem to start the
cluster from an existing R session.

R 2.8.1, openMPI 1.3, ubuntu 9.04.

Thanks,
Whit

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