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

Understanding HP-MPI
Dynamic Processes
Chapter 3170
Keys interpreted in the info argument to the spawn calls:
• host -- We accept standard host.domain strings and start the ranks
on the specified host. Without this key, the default is to start on the
same host as the root of the spawn call.
• wdir -- We accept /some/directory strings.
• path -- We accept /some/directory:/some/other/directory:..
A mechanism for setting arbitrary environment variables for the
spawned ranks is not provided.
Dynamic processes are not supported in HP-MPI V1.0 for Windows.