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

[Suraj Prabhakaran]

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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