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Subject: Re: [OMPI users] communicating with the caller
From: George Bosilca (bosilca_at_[hidden])
Date: 2008-03-25 12:52:43


MPI-2 standard
CHAPTER 5. PROCESS CREATION AND MANAGEMENT
Section 5.4

   george.

On Mar 25, 2008, at 12:37 PM, jody wrote:
> Could you explain what you mean by "comm accept/connect" ?
>
> jody
>
> On Tue, Mar 25, 2008 at 4:06 PM, George Bosilca
> <bosilca_at_[hidden]> wrote:
>> There is a chapter in the MPI standard about this. Usually, people
>> will use comm accept/connect to do such kind of things. No need to
>> have your own communication protocol.
>>
>> george.
>>
>>
>>
>> On Mar 25, 2008, at 10:32 AM, slimtimmy_at_[hidden] wrote:
>>> I'm new to OpenMPI and would like to know whether there is a common
>>> way
>>> for a caller of mpirun to communicate with the mpi processes.
>>> Basically
>>> I have a setup where one process is responsible for distributing
>>> jobs
>>> to other mpi processes and collecting the respective results
>>> afterwards.
>>> Now for example I want to enable communication between the master
>>> process and a GUI application. The GUI should be notified by the
>>> master
>>> about progress being made and it should also be possible for the GUI
>>> to
>>> send commands to the master (so the communication should be possible
>>> in
>>> both ways)
>>> Is stdin/stdout suitable? (is sending binary data a problem with
>>> this
>>> type of communication?) I also read that the MPI specification does
>>> not
>>> say anything about the use of stdin/stdout. Is it safe to assume
>>> that
>>> most common MPI implementations support it?
>>> Another way to deal with the problem would be to write some custom
>>> network code that is used alongside the MPI communication. What is
>>> commonly used in this situation?
>>>
>>> Best regards
>>> Timm
>>>
>>>
>>> _______________________________________________
>>> users mailing list
>>> users_at_[hidden]
>>> http://www.open-mpi.org/mailman/listinfo.cgi/users
>>
>>
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>>
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