[mpich-discuss] Processes involved in a MPI communicator.

[James Dinan]

Hi Mahesh,

On 2/23/11 8:26 AM, James Dinan wrote:
> Hi Matches,

Apologies for the spell checking fail.

  ~Jim.

>
> You can use MPI_Comm_group() to get the groups (MPI groups are
> essentially the process sets that communicators are built on) for the
> communicators in question.  These groups can then be compared through
> operations like MPI_Group_compare() or MPI_Group_intersection().
>
> If you are interested in the names of each rank, you may find
> MPI_Get_processor_name() helpful().
>
> Best,
>   ~Jim.
>
> PS- Info on these operations:
>
> http://www.mcs.anl.gov/research/projects/mpi/www/www3/
>
> On 02/23/2011 03:43 AM, Mahesh Doijade wrote:
>>
>> I want to know whether it is possible to get information about which
>> processes are part of which communicator . Is there any mpi routine
>> which can give me this info.
>>
>> Mahesh Doijade
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>
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