[mpich-discuss] MPICH under torque - adding new nodes

[Balaji, Pavan]

It’s an option for hydra’s configure.  But if you pass it to the top-level
configure, it’ll pass it downstream to hydra’s configure.

  — Pavan

On 2/20/14, 9:08 PM, "Suraj Prabhakaran" <suraj.prabhakaran at gmail.com>
wrote:

>Thanks Pavan. Although, one thing I noticed is that the configure script
>help doesn't list --with-pbs !
>Guess the help info is not updated?
>
> 
>On Feb 21, 2014, at 2:36 AM, Balaji, Pavan wrote:
>
>> 
>> If Torque TM libraries are found at configure time, they’ll be used.  If
>> not, ssh will be used.  You can pass --with-pbs to configure to help it
>> find the TM libraries.
>> 
>> — Pavan
>> 
>> On 2/20/14, 7:08 PM, "Suraj Prabhakaran" <suraj.prabhakaran at gmail.com>
>> wrote:
>> 
>>> Hi Pavan,
>>> 
>>> Thanks for your response. For the hosts that are not a part of the
>>> original PBS job, will mpich try to spawn jobs there through torque/pbs
>>> or will the spawn happen through ssh?
>>> 
>>> Best,
>>> Suraj
>>> 
>>> On Feb 21, 2014, at 1:33 AM, Balaji, Pavan wrote:
>>> 
>>>> 
>>>> I thought I responded to this email (it’s in my sent folder), but it
>>>> never
>>>> showed up on the mailing list.  Here it is again:
>>>> 
>>>> Hello,
>>>> 
>>>> Yes, you can use the info argument “hosts” to specify nodes that are
>>>> not a
>>>> part of the original PBS job.
>>>> 
>>>> — Pavan
>>>> 
>>>> 
>>>> On 2/20/14, 4:36 PM, "Suraj Prabhakaran" <suraj.prabhakaran at gmail.com>
>>>> wrote:
>>>> 
>>>>> Hi,
>>>>> 
>>>>> Thats an extension we have made. We hope to release it soon!
>>>>> 
>>>>> Best,
>>>>> Suraj
>>>>> 
>>>>> 
>>>>> On Feb 20, 2014, at 10:42 PM, Reuti wrote:
>>>>> 
>>>>>> Hi,
>>>>>> 
>>>>>> Am 20.02.2014 um 18:10 schrieb Suraj Prabhakaran:
>>>>>> 
>>>>>>> I want use MPICH under the Torque RMS. I can see that mpiexec will
>>>>>>> automatically take the nodefile from $PBS_NODEFILE.
>>>>>>> I am working on dynamically adding nodes to an existing job in
>>>>>>> torque.
>>>>>>> So there might be a point where the job actually has more number of
>>>>>>> nodes than what was listed in $PBS_NODEFILE.
>>>>>> 
>>>>>> How do you tell Torque that it should increase the number of granted
>>>>>> slots/nodes for a particular already running job?
>>>>>> 
>>>>>> -- Reuti
>>>>>> 
>>>>>> 
>>>>>>> Is it possible to do an MPI_Comm_spawn on these new nodes (which is
>>>>>>> not listed in PBS_NODEFILE but is actually a part of job)? For
>>>>>>> example
>>>>>>> using some info argument such as add-host or something? Or if it
>>>>>>> entails that the PBS_NODEFILE must be changed with the newly added
>>>>>>> nodes, I can do that too.
>>>>>>> But the basic question is, can MPICH spawn processes on these newly
>>>>>>> allocated nodes for the same job through some mechanism?
>>>>>>> 
>>>>>>> Best,
>>>>>>> Suraj
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