[MPICH] Is ther a limitation with MPI_Comm_spawn_multiple

[Vitaly]

from your code:
MPI_Info_set (info[4],host, "n1050");
MPI_Info_set (info[5],host, "n1051");
MPI_Info_set (info[5],host, "n1052");
MPI_Info_set (info[5],host, "n1053");

you not set info[6] and info[7]
because it crash!