[mpich-discuss] Issue with MPI_Comm_spawn_multiple

[Antonio J. Peña]

Thanks a lot Sangmin!


On 10/08/2015 03:43 PM, Seo, Sangmin wrote:
> Hi Toni,
>
> I confirmed the problem and am looking into it. I will get back to you after I resolve it.
>
> Regards,
> Sangmin
>
>
>> On Oct 6, 2015, at 7:23 AM, Antonio J. Peña <antonio.pena at bsc.es> wrote:
>>
>>
>> Right, but I do need to use the hosts key to get control of where the processes are spawned. Any clue?
>>
>>
>> On 10/02/2015 07:32 PM, Thakur, Rajeev wrote:
>>> Looks like it is related to the hosts key. Works without that.
>>>
>>> Rajeev
>>>
>>>> On Oct 2, 2015, at 10:34 AM, Antonio J. Peña <antonio.pena at bsc.es> wrote:
>>>>
>>>> Hi folks!
>>>>
>>>> I've been facing an issue with MPI_Comm_spawn_multiple when all the
>>>> following conditions are met:
>>>>
>>>>   1. 'count' is > 1
>>>>   2. Any value of 'array_of_maxprocs' is > 1
>>>>   3. Setting the "hosts" info key
>>>>
>>>> What I'm finding is that the spawned processes hang at MPI_Init. Find
>>>> attached a test case. You can reproduce my issue with -np 1.
>>>>
>>>> Is there anything I'm doing wrong? I'm using MPICH master at 1e6c4d8. I
>>>> haven't found a pending ticket, xfail test, or test case covering this
>>>> situation.
>>>>
>>>> All the best,
>>>>    Toni
>>>>
>>>> [P.S.: It still feels weird to be on the other side of discuss at mpich.org]
>>>>
>>>> -- 
>>>> Antonio J. Peña
>>>> Senior Researcher
>>>> Barcelona Supercomputing Center
>>>>
>>>>
>>>>
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>> -- 
>> Antonio J. Peña
>> Senior Researcher
>> Barcelona Supercomputing Center
>>
>>
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-- 
Antonio J. Peña
Senior Researcher
Barcelona Supercomputing Center


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intended recipient, you are strictly prohibited from disclosing,
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destroy and delete any copies you may have received.

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