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The output for this command could also have been 1 core on each of 4 compute nodes in the SLURM
allocation.
Submitting a Non-MPI Parallel Job
Use the following format of the LSF bsub command to submit a parallel job that does not make use of HP-MPI:
bsub -n num-procs [bsub-options] srun [srun-options] jobname [job-options]
The bsub command submits the job to LSF-HPC.
The -n num-procs parameter, which is required for parallel jobs, specifies the number of cores requested
for the job.
The SLURM srun command is the user job launched by the LSF bsub command. SLURM launches the
jobname in parallel on the reserved cores in the lsf partition.
The jobname parameter is the name of an executable file or command to be run in parallel.
Example 5-5 illustrates a non-MPI parallel job submission. The job output shows that the job “srun
hostname” was launched from the LSF execution host lsfhost.localdomain, and that it ran on 4 cores
from the compute nodes n1 and n2.
Example 5-5 Submitting a Non-MPI Parallel Job
$ bsub -n4 -I srun hostname
Job <21> is submitted to default queue <normal>
<<Waiting for dispatch ...>>
<<Starting on lsfhost.localdomain>>
n1
n1
n2
n2
You can use the LSF-SLURM external scheduler to specify additional SLURM options on the command line.
As shown in Example 5-6, it can be used to submit a job to run one task per compute node (on SMP nodes):
Example 5-6 Submitting a Non-MPI Parallel Job to Run One Task per Node
$ bsub -n4 -ext "SLURM[nodes=4]" -I srun hostname
Job <22> is submitted to default queue <normal>
<<Waiting for dispatch ...>>
<<Starting on lsfhost.localdomain>>
n1
n2
n3
n4
Submitting a Parallel Job That Uses the HP-MPI Message Passing Interface
Use the following format of the LSF bsub command to submit a parallel job that makes use of HP-MPI:
bsub -n num-procs [bsub-options] mpijob
The bsub command submits the job to LSF-HPC.
The -n num-procs parameter, which is required for parallel jobs, specifies the number of cores requested
for the job.
The mpijob argument has the following format:
mpirun [mpirun--options] [-srun [srun-options]] mpi-jobname
See the mpirun(1) manpage for more information on this command.
The mpirun command's -srun option is required if the MPI_USESRUN environment variable is not set or
if you want to use additional srun options to execute your job. The srun command, used by the mpirun
command to launch the MPI tasks in parallel in the lsf partition, determines the number of tasks to launch
from the SLURM_NPROCS environment variable that was set by LSF-HPC; this environment variable is equivalent
48 Submitting Jobs
- HP XC System Software 1
- User's Guide 1
- Table of Contents 3
- 5 Submitting Jobs 4
- 6 Debugging Applications 5
- 7 Tuning Applications 5
- 8 Using SLURM 5
- 9 Using LSF 5
- 10 Advanced Topics 6
- List of Figures 7
- List of Tables 9
- List of Examples 11
- About This Document 13
- HP XC Information 14
- For More Information 15
- Supplementary Information 15
- Related Information 16
- Related Linux Web Sites 17
- Related MPI Web Sites 17
- Related Compiler Web Sites 17
- Additional Publications 17
- Typographic Conventions 18
- HP Encourages Your Comments 18
- System Architecture 19
- Node Specialization 20
- Storage and I/O 20
- File System 21
- System Interconnect Network 22
- User Environment 23
- Run-Time Environment 24
- Standard LSF 25
- 2 Using the System 27
- Introduction 28
- 30 Using the System 30
- Overview of Modules 31
- Supplied Modulefiles 32
- Viewing Available Modulefiles 33
- Viewing Loaded Modulefiles 33
- Loading a Modulefile 33
- Unloading a Modulefile 34
- Modulefile Conflicts 34
- Creating a Modulefile 35
- 4 Developing Applications 37
- Interrupting a Job 38
- Setting Debugging Options 39
- Modulefiles 40
- Standard 41
- 42 Developing Applications 42
- Developing Libraries 43
- 44 Developing Applications 44
- 46 Submitting Jobs 46
- 48 Submitting Jobs 48
- Compiling applications 49
- HP-MPI User's Guide 49
- 50 Submitting Jobs 50
- Running Preexecution Programs 51
- 52 Submitting Jobs 52
- SSH and TotalView 54
- Setting Up TotalView 54
- Using TotalView with SLURM 54
- Using TotalView with LSF-HPC 55
- Setting TotalView Preferences 55
- Debugging an Application 55
- TotalView process window 56
- Exiting TotalView 57
- 60 Tuning Applications 60
- The srun Roles and Modes 64
- Job Accounting 65
- Fault Tolerance 66
- Security 66
- Overview of LSF-HPC 68
- Using LSF-HPC 69 69
- Job Terminology 70
- Using LSF-HPC 71 71
- Notes on LSF-HPC 72
- Using LSF-HPC 73 73
- Job Startup and Job Control 74
- Preemption 75
- Getting Host Load Information 76
- Submitting Jobs 77
- LSF-SLURM External Scheduler 78
- Using LSF-HPC 79 79
- 80 Using LSF 80
- Examining the Status of a Job 81
- 82 Using LSF 82
- Using LSF-HPC 83 83
- 84 Using LSF 84
- Using LSF-HPC 85 85
- 86 Using LSF 86
- Using LSF-HPC 87 87
- 88 Using LSF 88
- Using LSF-HPC 89 89
- 92 Advanced Topics 92
- 94 Advanced Topics 94
- Example Procedure 1 95
- Example Procedure 2 95
- Local Disks on Compute Nodes 96
- Communication Between Nodes 97
- Appendix A Examples 99
- Submit the job: 100
- View the job: 100
- 102 Examples 102
- Show the environment: 103
- Display the script: 103
- Run the job: 103
- Show the SLURM job ID: 104
- Show the job allocation: 104
- Exit the pseudo-terminal: 105
- View the interactive jobs: 105
- View the finished jobs: 105
- View the node state: 105
- View the running job: 106
- View the finished job: 106
- Glossary 109
- 110 Glossary 110
- 112 Glossary 112
- 116 Index 116
- 118 Index 118
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