HP XC System 2.x Software - Manual (Page 114)

Hello world!
Hello world! I’m 1 of 4 on host1
Hello world! I’m 3 of 4 on host2
Hello world! I’m 0 of 4 on host1
Hello world! I’m 2 of 4 on host2
8.3.3 Using srun with HP-MPI
The SLURM srun utility ( srun command) is used with the mpirun command to launch
an MPI job on an HP XC system.
The following is the general format of the mpirun command with srun :
mpirun [mpirun options] -srun [srun options]
This method runs with no restrictions on MPI-2 functionality.
The HP MPI -np option is not allowed with -srun . The following HP-MPI options are
allowed with -srun :
HP-MPI options allowed with -srun :
-help
-version
-jv
-i <spec>
-universe_size=#
-sp <paths>
-T
-prot
-spawn
-tv
-1sided
-evar[=val]
For additional information about using -srun , refer to Section 6.4 or the srun manpage
( man srun ).
8.3.3.1 Launching MPI Jobs
This section provides some examples of using -srun with mpirun to launch an HP-MPI job.
These examples assume that a system has the Quadrics Elan4 system interconnect and SLURM
is configured to use the ELAN4. These examples also assume that your system is made up of
nodes that each contain two CPUs.
For additional information about using the srun command and its options, refer to Section 6.4.
• The following command runs a.out with four ranks, one per node, and ranks are
cyclically allocated:
$ mpirun -srun -N4 ./a.out
host1 rank1
.
.
.
host4 rank4
8-4 Using HP-MPI