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

Rajeev Thakur thakur at mcs.anl.gov
Wed Aug 20 22:13:23 CDT 2014


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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