HP-MPI User's Guide (11th Edition)

Understanding HP-MPI
Running applications on Windows
Chapter 3 103
7. On the Task Properties window, select the Processors tab and set
to one processor for the mpirun task.
NOTE In Step 5, you can unselect the "Use job’s allocated processors" box
and set the processors count to 1. This eliminates setting the
processor count in the task window as shown here in Step 7.
8. To set environment variables for the MPI job, use the Environment
tab in the Task Properties window.
9. Select OK on the Task Properties window.