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From: John Robinson (jr_at_[hidden])
Date: 2006-07-11 14:19:35


The MPI publish/lookup calls should handle this, if OpenMPI has them. I
haven't tried this with OpenMPI yet, but it claims MPI-2 compilance,
right? ;-)

/jr

---
Ralph H Castain wrote:
> On 7/11/06 11:59 AM, "Edgar Gabriel" <gabriel_at_[hidden]> wrote:
> 
> 
>> Abhishek Agarwal wrote:
>> 
>>> Hello,
>>> 
>>> Is there a way of providing a specific port number in MPI_Info
>>> when using a MPI_Open_port command so that clients know which
>>> port number to connect.
>> 
>> the MPI port-name in Open MPI has nothing to do with a TCP port
>> number. The port-name right now is a combination of the process
>> name ( a tuple of cell id, job id and process id) and a tag used
>> for the communication.
>> 
>> Maybe somebody from the RTE group could comment on whether there is
>> a possibility to specify a specific port number for OOB
>> communication, I am not aware of any right now...
> 
> 
> I'm afraid not - the port number for OOB communications is determined
>  dynamically be each process, and then communicated between them.
> 
> I'm not sure what your intended purpose is here, of course, but you
> don't need to worry about your process being able to "talk" via the
> OOB - it's all done automatically during launch.
> 
> Ralph
> 
> 
> 
>> Thanks Edgar
>> 
>> 
>>> Do advice of any solution so that we can create the portname
>>> inside the client once we know the port number of server.
>>> 
>>> Thanks Abhishek
>>> 
>>> 
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