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

Understanding HP-MPI
MPI options
Chapter 3124
-np # Specifies the number of processes to run. Generally
used in single host mode, but also valid with
-hostfile, -hostlist, -lsb_hosts, and
-lsb_mcpu_hosts.
-stdio=[options] Specifies standard IO options. Refer to “External
input and output” on page 210 for more information on
standard IO, as well as a complete list of stdio options.
This applies to appfiles only.
Process placement
-cpu_bind Binds a rank to an ldom to prevent a process from
moving to a different ldom after startup. Refer to “CPU
binding” on page 58 for details on how to use this
option.
Application bitness specification
-mpi32 Option for running on Opteron and Intel64. Should
be used to indicate the bitness of the application to be
invoked so that the availability of interconnect
libraries can be properly determined by the HP-MPI
utilities mpirun and mpid. The default is -mpi64.
-mpi64 Option for running on Opteron and Intel64. Should
be used to indicate the bitness of the application to be
invoked so that the availability of interconnect
libraries can be properly determined by the HP-MPI
utilities mpirun and mpid. The default is -mpi64.
Debugging and informational options
-help Prints usage information for mpirun.
-version Prints the major and minor version numbers.
-prot Prints the communication protocol between each host
(e.g. TCP/IP or shared memory). The exact format and
content presented by this option is subject to change as
new interconnects and communication protocols are
added to HP-MPI.