HP-MPI Version 2.0 for Windows Release Note

In the example above,mpirun is instructed to run 6 ranks across the machines mpihpc1 and
mpihpc2 with the layout having ranks 0, 2, and 4 on mpihpc1 and ranks 1, 3, and 5 on mpihpc2.
So mpirun creates a HPCS job allocation specifically requesting hosts mpihpc1 and mpihpc2,
and launches the task onto those nodes.
38 Submitting Jobs