[mpich-discuss] hydra proxy questions

[Pavan Balaji]

No, it's not expected.  Can you try out the latest version of MPICH2 to 
see if this problem still exists?

  -- Pavan

On 02/27/2012 08:39 AM, Steve Krueger wrote:
> I am using MPICH2 1.3.2p1 with hydra launcher and sock device.
>
> I’ve noticed that when I start a job via mpirun, the follow processes
>
> are started on my behalf.
>
> 1) mpirun
>
> 2) ssh to all the machines
>
> 3) hydra_pmi_proxy on all the machine
>
> 4) my exe on all the machines
>
> If I kill the mpirun process, 1,2 and 3 are all terminated, but my exe (4)
>
> continues to function normally.
>
> My questions:
>
> 1) Is this expected behavior?
>
> 2) Should killing the mpirun process kill all the ranks?
>
> 3) Is there any operation that the ranks could do that require the proxy
> process?
>
> I’m asking, as I’ve noticed strange hangs in my exe potentially related
> to creating new
>
> MPI_Comm’s, but only after I kill the mpirun process.
>
> sk
>
>
>
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-- 
Pavan Balaji
http://www.mcs.anl.gov/~balaji