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

[Balaji, Pavan]

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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