it sure does. even for localhost.
make sure you can run the simple mpiHelloWorld examples before you try from
something from R.

here's the mpi bit about ssh keys:
http://www.open-mpi.org/faq/?category=rsh

-Whit


On Thu, Sep 17, 2009 at 8:12 PM, Ross Boylan <ross@biostat.ucsf.edu> wrote:

> As other messages have indicated, this may not work even if properly
> setup.  But it sounds as if you don't have things setup for MPI, which
> needs passwordless logins to all systems (including localhost, I think).
>
> Ross Boylan
> On Thu, 2009-09-17 at 17:48 -0500, Hodgess, Erin wrote:
> > Hi HPC R People:
> >
> > I'm having some trouble with Rmpi and spawning slaves.
> >
> > I'm using Ubuntu 9.0.4.
> >
> > Any suggestions would be much appreciated.
> >
> >
> > erin@erin-laptop:~$ R
> >
> > R version 2.9.2 (2009-08-24)
> > Copyright (C) 2009 The R Foundation for Statistical Computing
> > ISBN 3-900051-07-0
> >
> > R is free software and comes with ABSOLUTELY NO WARRANTY.
> > You are welcome to redistribute it under certain conditions.
> > Type 'license()' or 'licence()' for distribution details.
> >
> >   Natural language support but running in an English locale
> >
> > R is a collaborative project with many contributors.
> > Type 'contributors()' for more information and
> > 'citation()' on how to cite R or R packages in publications.
> >
> > Type 'demo()' for some demos, 'help()' for on-line help, or
> > 'help.start()' for an HTML browser interface to help.
> > Type 'q()' to quit R.
> >
> > > library(Rmpi)
> > > mpi.spawn.Rslaves(nslaves=2)
> > ssh: connect to host erin-laptop port 22: Connection refused
> >
> --------------------------------------------------------------------------
> > A daemon (pid 6484) died unexpectedly with status 255 while attempting
> > to launch so we are aborting.
> >
> > There may be more information reported by the environment (see above).
> >
> > This may be because the daemon was unable to find all the needed shared
> > libraries on the remote node. You may set your LD_LIBRARY_PATH to have
> the
> > location of the shared libraries on the remote nodes and this will
> > automatically be forwarded to the remote nodes.
> >
> --------------------------------------------------------------------------
> > [erin-laptop:06473] [[59985,1],0] routed:binomial: Connection to lifeline
> [[59985,0],0] lost
> > erin@erin-laptop:~$
> >
> >
> > Thanks,
> > Sincerely,
> > Erin
> >
> >
> > Erin M. Hodgess, PhD
> > Associate Professor
> > Department of Computer and Mathematical Sciences
> > University of Houston - Downtown
> > mailto: hodgesse@uhd.edu
> >
> >
> >
> >
> >
> >       [[alternative HTML version deleted]]
> >
> > _______________________________________________
> > R-sig-hpc mailing list
> > R-sig-hpc@r-project.org
> > https://stat.ethz.ch/mailman/listinfo/r-sig-hpc
>
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