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" <[email protected]> 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 ? _______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss