[mpich-discuss] installing and using MPI_PUBLISH_NAME and MPI_LOOKUP_NAME with mpich2

[Pavan Balaji]

Hi Bernard,

You didn't answer my first question. Can you please let us know about this:

 >> Do you have a shared file-system? If yes, you don't need to modify
 >> anything. It should just work. If no, then read below:

With respect to the test program, what's the exact usage? It looks like 
it needs to be run with more than 1 process. You mentioned that there 
are two applications? Are both using the same executable (with different 
input arguments)?

  -- Pavan

On 06/16/2011 04:12 AM, Bernard Secher - SFME/LGLS wrote:
> When I tried to use hydra_nameserver I get the followinf error message
> when I launch my application:
>
> [secher at is209011 essai]$ [mpiexec at is209011] HYDU_sock_read
> (/data/tmplgls/secher/mpich2-1.3.2p1-src/src/pm/hydra/utils/sock/sock.c:223):
> read errno (Input/output error)
> [mpiexec at is209011] control_cb
> (/data/tmplgls/secher/mpich2-1.3.2p1-src/src/pm/hydra/pm/pmiserv/pmiserv_cb.c:249):
> assert (!closed) failed
> [mpiexec at is209011] HYDT_dmxu_poll_wait_for_event
> (/data/tmplgls/secher/mpich2-1.3.2p1-src/src/pm/hydra/tools/demux/demux_poll.c:77):
> callback returned error status
> [mpiexec at is209011] HYD_pmci_wait_for_completion
> (/data/tmplgls/secher/mpich2-1.3.2p1-src/src/pm/hydra/pm/pmiserv/pmiserv_pmci.c:206):
> error waiting for event
> [mpiexec at is209011] main
> (/data/tmplgls/secher/mpich2-1.3.2p1-src/src/pm/hydra/ui/mpich/mpiexec.c:404):
> process manager error waiting for completion
>
> What is wrong
>
> My application is just a little test program. I have attached it to this
> message.
>
> Bernard
>
> Pavan Balaji a écrit :
>>
>> [please keep mpich-discuss cc'ed]
>>
>> On 06/16/2011 02:18 AM, Bernard Secher - SFME/LGLS wrote:
>>> How can I use the default publish mechanism? My Publish/lookup is
>>> hapenning between two different applications. Is there an option to give
>>> to mpiexec for that ?
>>
>> Do you have a shared file-system? If yes, you don't need to modify
>> anything. It should just work. If no, then read below:
>>
>>> If I use the pmi option, the mpiexec -nameserver -help give the
>>> following message:
>>> -nameserver: Nameserver to use for publish/lookup (format is host:port)
>>>
>>> I don't understand what I have to do with this option.
>>> First I launch the hydra_nameserver . Do I give some options to
>>> hydra_nameserver ? Do I give some options then, to the two mpiexec to
>>> launch my two applications?
>>
>> There are no options required for hydra_nameserver. The two mpiexec's
>> will need the -nameserver {hostname} option, where {hostname} is the
>> name of the host where the nameserver is running.
>>
>> -- Pavan
>>
>
>
> --
>
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>   Bernard Sécher  DEN/DM2S/SFME/LGLS    mailto :bsecher at cea.fr
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-- 
Pavan Balaji
http://www.mcs.anl.gov/~balaji