HP XC System Software Administration Guide Version 3.1
B.3 Sample Case
Consider an HP XC system of 128 nodes consisting of:
• A head node with a host name of xc128
• 6 large SMP nodes (or fat nodes) with the host names xc[1-6]
• 122 thin nodes.
114 of the thin nodes are compute nodes and have host names of xc7-120
B.4 Instructions
1. Log into the head node of the HP XC system as superuser (root). Do not log in though the cluster
alias.
2. Change directory to /opt/hptc/lsf/top/conf.
3. Rename the existing setup files:
# mv profile.lsf profile.lsf.xc
# mv cshrc.lsf cshrc.lsf.xc
4. Obtain standard LSF and install it into the existing LSF tree.
These instructions assume that you are familiar with the procedures to install Standard LSF, which
consist of configuring the install.config file and running .
# ./lsfinstall -f install.config
Here are the required minimum settings for the installation configuration file (adjust as necessary for
your system):
LSF_TOP="/opt/hptc/lsf/top"
LSF_ADMINS="lsfadmin"
LSF_CLUSTER_NAME="hptclsf"
LSF_ADD_SERVERS="xc1 xc2 xc3 xc4 xc5 xc6"
Be sure to set the host names of your fat nodes in the LSF_ADD_SERVERS entry.
5. Correct the setup files
• The new installation of standard LSF will create new setup files. Rename these files:
# mv profile.lsf profile.lsf.notxc
# mv cshrc.lsf cshrc.lsf.notxc
• Now create soft links of the original files to their HP XC equivalents:
# ln -s profile.lsf.xc profile.lsf
# ln -s cshrc.lsf.xc cshrc.lsf
• The newly installed setup files for Standard LSF need to be edited so that the LSF daemons can
determine whether or not LSF is running on a SLURM based system.
If the HP XC file, /etc/hptc-release, is found, the setup files assume that the LSF daemons
are interfacing with SLURM.
However, this is not true for the fat nodes running Standard LSF. To bypass this, create an identity
file that exists only on the thin nodes, and have the Standard LSF setup files look for this identity
file.
The identity file will be /var/lsf/lsfslurm. Use the pdsh command to create this file on all
nodes except the fat nodes. For the sample case, the pdsh command resembles this:
# pdsh -a -x xc[1-6] "touch /var/lsf/lsfslurm"
• Change the file name in the setup files by executing the following sed commands:
266 Installing Standard LSF on a Subset of Nodes