[mpich-discuss] MPICH SSH?

[Peter Smith]

Yes i did disable SSH after starting a global mpd ring. After reading
the README file it became clear for me that MPICH2 uses devices ch3
etc. for communication. The SSH connection is only for starting the
mpd ring, and this also fails when i try to disable SSH before
creating a ring.

I guess that i should have followed rule number one [read
documentation carefully] before posting to this maillinglist.

Sorry.

On 3/6/10, Reuti <reuti at staff.uni-marburg.de> wrote:
> Hi,
>
>  Am 06.03.2010 um 15:30 schrieb Peter Smith:
>
>
> > I have installed and configured MPICH2 version 1.2.1p1 in a test
> > environment with one master and three worker nodes. I am new to MPICH
> > and therefore i have used different tutorials on the net to configure
> > the package. Everything seems to function correctly, when submitting
> > the example program from the "Example program" section at
> > http://en.wikipedia.org/wiki/Message_Passing_Interface i
> get the
> > expected responses (i think). Passwordless SSH is configured on all
> > machines as descriped in many of tutorials. If i disable SSH on the
> > cluster, everything is still functional, i get the same responses from
> > the example program and if i log into the worker nodes i can see the
> > program being run in the task list. I dont understand why MPICH can
> > still function when SSH is disabled?
> >
>
>  did you disable it after starting all the daemons?
>
>  -- Reuti
>
>
>
> > I still have a lot of reading on the subject to understand the
> > technology, but i thougt that i was pretty clear on that MPICH needed
> > SSH to function?
> > _______________________________________________
> > mpich-discuss mailing list
> > mpich-discuss at mcs.anl.gov
> > https://lists.mcs.anl.gov/mailman/listinfo/mpich-discuss
> >
>
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