Hello world (Rank: 0 / Host: praxvoper-laptop)
Fatal error in MPI_Recv: Invalid datatype, error stack:
MPI_Recv(186): MPI_Recv(buf=0xbff2444a, count=50, MPI_DATATYPE_NULL, src=MPI_ANY_SOURCE, tag=1, MPI_COMM_WORLD, status=0xbff2438c) failed
MPI_Recv(118): Null Datatype pointer
Hello world (Rank: 1 / Host: it10b)
Fatal error in MPI_Send: Invalid datatype, error stack:
MPI_Send(173): MPI_Send(buf=0xbfa20d3a, count=50, MPI_DATATYPE_NULL, dest=0, tag=1, MPI_COMM_WORLD) failed
MPI_Send(111): Null Datatype pointer