Launching an interactive mpi job – HP XC System 4.x Software User Manual
Page 102
$ export SLURM_JOBID=150
$ srun hostname
n1
n2
n3
n4
Note:
Be sure to unset the SLURM_JOBID when you are finished with the allocation, to prevent a
previous SLURM JOBID from interfering with future jobs:
$ unset SLURM_JOBID
The following examples illustrate launching interactive MPI jobs. They use the hellompi job
script introduced in
Example 10-9 Launching an Interactive MPI Job
$ mpirun -srun --jobid=150 hellompi
Hello! I'm rank 0 of 4 on n1
Hello! I'm rank 1 of 4 on n2
Hello! I'm rank 2 of 4 on n3
Hello! I'm rank 3 of 4 on n4
uses the -n 8 option to launch on all cores in the allocation.
Example 10-10 Launching an Interactive MPI Job on All Cores in the Allocation
This example assumes 2 cores per node.
$ mpirun -srun --jobid=150 -n8 hellompi
Hello! I'm rank 0 of 8 on n1
Hello! I'm rank 1 of 8 on n1
Hello! I'm rank 2 of 8 on n2
Hello! I'm rank 3 of 8 on n2
Hello! I'm rank 4 of 8 on n3
Hello! I'm rank 5 of 8 on n3
Hello! I'm rank 6 of 8 on n4
Hello! I'm rank 7 of 8 on n4
Alternatively, you can use the following:
$ export SLURM_JOBID=150
$ export SLURM_NPROCS=8
$ mpirun -srun hellompi
Hello! I'm rank 0 of 8 on n1
Hello! I'm rank 1 of 8 on n1
Hello! I'm rank 2 of 8 on n2
Hello! I'm rank 3 of 8 on n2
Hello! I'm rank 4 of 8 on n3
Hello! I'm rank 5 of 8 on n3
Hello! I'm rank 6 of 8 on n4
Hello! I'm rank 7 of 8 on n4
Use
to launch a Totalview debugger session, assuming that TotalView is installed and licensed
and that ssh X forwarding is properly configured:
$ export SLURM_JOBID=150
$ export SLURM_NPROCS=4
$ mpirun -tv srun additional parameters as needed
After you finish with this interactive allocation, exit the /bin/bash process in the first terminal;
this ends the LSF job.
102
Using LSF