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

Understanding HP-MPI
Running applications on HP-UX and Linux
Chapter 374
% module unload hp-mpi unload the hp-mpi module
Modules are only supported on Linux.
NOTE On XC Linux, the HP-MPI module is named mpi/hp/default and can be
abbreviated 'mpi'.
Runtime utility commands
HP-MPI provides a set of utility commands to supplement the MPI
library routines. These commands are listed below and described in the
following sections:
• mpirun
• mpirun.all (see restrictions under “mpirun.all” on page 81)
• mpiexec
• mpijob
• mpiclean
mpirun
This section includes a discussion of mpirun syntax formats, mpirun
options, appfiles, the multipurpose daemon process, and generating
multihost instrumentation profiles.
The HP-MPI start-up mpirun requires that MPI be installed in the same
directory on every execution host. The default is the location from which
mpirun is executed. This can be overridden with the MPI_ROOT
environment variable. Set the MPI_ROOT environment variable prior to
starting mpirun. See “Configuring your environment” on page 20.
mpirun syntax has six formats:
• Single host execution
• Appfile execution
• prun execution
• srun execution
• LSF on XC systems