See the OUTPUT section of the lsload manpage for further information about the output of this example. In addition, refer to the Platform Computing Corporation LSF documentation and the lsload manpage for more information about the features of this command.

7.3.4 Checking LSF System Queues

All jobs on the HP XC system that are submitted to LSF-HPC are placed into an LSF job queue.HP recommends that you check the status and availability of LSF system queues before launching a job so that you can select the most appropriate queue for your job.

You can easily check the status, limits, and configurations of LSF queues with the bqueues command. This command is fully described in Platform Computing Corporation’s LSF documentation and manpages.

See the bsub(1) manpage for more information on submitting jobs to specific queues.

Refer to the bqueues manpage for further information about this command.

The bparams command displays a list of the current default queues configured for the system. See the bparams(1) manpage for more details.

7.3.5 Getting Information About the lsf Partition

Information about the SLURM lsf compute node partition can be viewed with the SLURM sinfo command. A partition is one or more compute nodes that have been grouped together. A SLURM lsf partition is created when the HP XC system is installed. This partition contains the resources that will be managed by LSF-HPC and available for jobs submitted to LSF-HPC.

The sinfo command reports the state of the lsf partition and all other partitions on the system. The sinfo command displays a summary of available partition and node information such as partition names, nodes/partition, and CPUs/node). It has a wide variety of filtering, sorting, and formatting options.

The following example shows the use of the sinfo command to obtain lsf partition information:

$ sinfo -p lsf

PARTITION AVAIL TIMELIMIT NODES STATE NODELIST

lsf

up infinite

128

idle n[1-128]

Use the following command to obtain more information on the nodes in the lsf partition:

$ sinfo -p lsf -lNe

 

 

 

 

 

 

NODELIST

NODES

PARTITION STATE CPUS

MEMORY TMP_DISK

WEIGHT

FEATURES

REASON

n[1-128]

128

lsf idle

2

3456

1

1

(null)

none

Refer to the sinfo(1) manpage and Chapter 6 for further information about using the sinfo command.

7.4 Submitting Jobs

The bsub command submits jobs to the LSF-HPC.

This section discusses how you can use the bsub command on the HP XC system with LSF-HPC to launch a variety of applications. This section focuses on enhancements to the bsub command from the LSF-HPC integration with SLURM on the HP XC system; this section does not discuss standard bsub functionality or flexibility. See the Platform LSF documentation and the bsub(1) manpage for more information on this important command.

The bsub command and its options, including the external SLURM scheduler is used to request a set of resources on which to launch a job. See Section 7.1.2 for an introduction and Section 7.4.1 for additional information. The arguments to he bsub command consist of the user job and its arguments. The bsub options allow you to provide information on the amount and type of resources needed by the job.

Using LSF 7-9