An additional suggestion: The inter-communicator can be converted to an intra-communicator using MPI_Intercomm_merge. The communicator produced by the merge could be used to create an RMA window. On Mon, Mar 17, 2014 at 8:46 PM, Rajeev Thakur <[email protected]> wrote:

The communicator passed to Win_create must be an intra-communicator, not inter-communicator. (MPI-3 pg 405).

On Mar 17, 2014, at 5:44 PM, Ramesh Vinayagam <[email protected]> wrote:

...

Hi,

Can comm_spawn be used with win_create. For ex: Master process: MPI_Comm_spawn(worker_program,MPI_ARGV_NULL, world_size-1, info, 0, MPI_COMM_SELF, &everyone, MPI_ERRCODES_IGNORE);

MPI_Win_create(&testval, sizeof(double), 1, MPI_INFO_NULL, everyone, &nwin);

Worker process: MPI_Comm_get_parent(&parent); if (parent == MPI_COMM_NULL) error("No parent!"); MPI_Comm_remote_size(parent, &size); if (size != 1) error("Something's wrong with the parent");

fprintf (stdout,"Size: %zd\n", size); system("echo $NUM_THREADS");

MPI_Win_create(MPI_BOTTOM, 0, 1, MPI_INFO_NULL, parent, &nwin);

This one fails currently. Am I doing something wrong. It would be great if someone could help me.

Thanks Ramesh _______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss

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