The "hello from mpi" messages are printed with an MPI_Gather because otherwise you cannot specify the printing order (and fflush is not helping)
The "hello from mpi" messages are printed with an MPI_Gather because otherwise you cannot specify the printing order (and fflush is not helping)

tim0s/ORCS,tim0s/ORCS,tim0s/ORCS,tim0s/ORCS