[mpich-discuss] Hydra process manager how-to?

[Pavan Balaji]

I've corrected the Hydra usage website to reflect the correct command line:

% mpiexec.hydra -rmk pbs /path/to/my_binary

If you use the above command line, Hydra will coordinate with PBS to
figure out how many nodes were allocated and launch the binary on those
nodes. You are, of course, free to override these default settings using
"-n" or "-f". For example:

% mpiexec.hydra -rmk pbs -n 4 /path/to/my_binary

.. will launch the executable on 4 processes.

 -- Pavan

On 01/12/2010 05:09 PM, Dave Goodell wrote:
> I haven't personally used PBS with hydra, but my understanding is that
> they will get along with each other somehow:
> 
> http://wiki.mcs.anl.gov/mpich2/index.php/Using_the_Hydra_Process_Manager#Resource_Manager_Integration
> 
> 
> The example command line in that section doesn't make sense to me, so
> we're testing on this on our end.  We'll let you know what we find out.
> 
> My suspicion is that you can just put "mpiexec.hydra -rmk pbs
> /path/to/my_binary" in place of your old mpiexec line in your PBS
> script.  Hydra _should_ figure out the hostfile and number of processes
> from the PBS environment variables.  However, I haven't tested that yet.
> 
> -Dave
> 
> On Jan 12, 2010, at 4:43 PM, Mário Costa wrote:
> 
>> Hello to all,
>>
>> I'm trying to use mpiexe.hydra from mpich2 1.2 with PBS, but I'm not
>> quite sure how this is done.
>>
>> Is hydra already working with PBS?
>>
>> How do I setup PBS?
>>
>> How do I launch the pbs job?
>>
>> How does hydra nows which nodes/procs are to be used?
>>
>> I hope someone can help-me with this ...
>>
>> Thanks a lot!
>>
>> Mario Costa
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> 
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-- 
Pavan Balaji
http://www.mcs.anl.gov/~balaji