[mpich-discuss] MPI point-to-point question

[Rajeev Thakur]

Shouldn't be.

On Aug 20, 2014, at 10:28 PM, "Boisvert, Sebastien" <boisvert at anl.gov> wrote:

> OK !
> 
> And, would there be a performance difference if I use MPI_Improbe and MPI_Mrecv
> (with MPI_THREAD_FUNNELED) ?
> 
>> ________________________________________
>> From: Rajeev Thakur [thakur at mcs.anl.gov]
>> Sent: Wednesday, August 20, 2014 10:13 PM
>> To: discuss at mpich.org
>> Subject: Re: [mpich-discuss] MPI point-to-point question
>> Just use MPI_ANY_SOURCE and MPI_ANY_TAG in the MPI_Iprobe, so it will return the first available message.
>> Rajeev
>> On Aug 20, 2014, at 8:37 PM, "Boisvert, Sebastien" <boisvert at anl.gov> wrote:
>>> Hi,
>>> 
>>> When using MPI_Isend + MPI_Test + MPI_Iprobe + MPI_Recv (MPI point-to-point),
>>> is there a way to give a hint to MPICH to tell it that the order of messages between each
>>> pair of MPI ranks does not need to be enforced ?
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