[mpich-discuss] Comm_spawn with win_create

[Ramesh Vinayagam]

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
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