[mvapich-discuss] mpd hostname resolution?

[Kenneth Yoshimoto]

  If hydra requires passwordless ssh to the compute nodes,
I am unable to use it.  From the docs, it seems that
mpd is still an option.  Is it broken and unsupported?
  Or is there a way to bring Hydra up in a batch job,
without ssh/rsh/slurm?

Thanks,
Kenneth

On Tue, 22 Feb 2011, James Dinan wrote:

> Date: Tue, 22 Feb 2011 19:20:49 -0600
> From: James Dinan <dinan at mcs.anl.gov>
> To: mvapich-discuss at cse.ohio-state.edu
> Subject: Re: [mvapich-discuss] mpd hostname resolution?
> 
> Hi Kenneth,
>
> MPD is deprecated, unless you have a particular need for it please try
> using Hydra:
>
> http://wiki.mcs.anl.gov/mpich2/index.php/Using_the_Hydra_Process_Manager
>
> Best,
> ~Jim.
>
> On 02/22/2011 06:15 PM, Kenneth Yoshimoto wrote:
>>
>>  I am trying to get mpd to join a ring, but it seems
>> to be doing name resolution in an odd way.  Like it's
>> not checking /etc/hosts:
>>
>> [kenneth at trestles-1-14 ~]$ /home/diag/opt/mvapich2/1.5.1p1/pgi/bin/mpd
>> --host=trestles.sdsc.edu --port=53726
>> trestles-1-14.local_54534: conn error in connect_rhs: No route to host
>> trestles-1-14.local_54534 (connect_rhs 979): failed to connect to rhs at
>> 198.202.118.30 53726
>> trestles-1-14.local_54534 (enter_ring 886): rhs connect failed
>> trestles-1-14.local_54534 (run 267): failed to enter ring
>> [kenneth at trestles-1-14 ~]$ telnet trestles.sdsc.edu 53726
>> Trying 10.1.254.185...
>> Connected to trestles.sdsc.edu (10.1.254.185).
>> Escape character is '^]'.
>> ^]
>> telnet> quit
>> Connection closed.
>> [kenneth at trestles-1-14 ~]$
>>
>> Is this a bug in mpd name resolution?  Or am I doing something wrong?
>>
>> Thanks,
>> Kenneth
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