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

[Leon Yuhanov]

hey,ditch hydra. use mpd its easier for quick simple stuff. move onto lam-mpi or open-mpi after that.


Bernard Secher - SFME/LGLS <bernard.secher at cea.fr> 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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