Installing LSF-HPC With SLURM Into an Existing Standard LSF Cluster

You must apply the new rules to every node that might be selected to run the LSF-HPC daemons. A

later step in this procedure describes how to generate a new /etc/sysconfig/iptables file on

each node, using your modified iptables.proto file.

Node-to-node communication

LSF can use either rsh or ssh to control all the LSF daemons in the cluster. The daemons expect the

selected mechanism to enable access to all nodes without a password.

Because rsh transmits passwords unencrypted through the network, HP does not recommend its use

in HP XC clusters. (Unencrypted passwords might be revealed by a standard network-sniffing

program.) Consequently, rsh and its related packages are not installed on HP XC clusters by default

and ssh is recommended instead.

If you prefer to use rsh within the LSF cluster, install its RPM packages on the head node before

proceeding to set up LSF. The rsh packages are provided on the HP XC software DVD.

Setup the expected LSF environment

A typical LSF installation provides two environment setup files, named profile.lsf and

cshrc.lsf by default.. When sourced by the user, the setup files enable access to the LSF binaries,

man pages, and libraries.

When LSF is installed locally, two custom system files named /etc/profile.d/lsf.sh and

/etc/profile.d/lsf.csh. are created. The system files automatically source the LSF

environment setup files at log in, giving all authorized users access to LSF as soon as they log in to the

cluster.

The current contents of the two system files are shown below. The current LSF_TOP,

(/opt/hptc/lsf/top), is replaced by a new LSF_TOP, (/shared/lsf), which is a location that

is shared between the two clusters.

[root@xc128 profile.d]# cat lsf.sh

case $PATH in

*-slurm/etc:*) ;;

*:/opt/hptc/lsf/top*) ;;

if [ -f /opt/hptc/lsf/top/conf/profile.lsf ]; then

. /opt/hptc/lsf/top/conf/profile.lsf

esac

[root@xc128 profile.d]# cat lsf.csh

if ( "${path}" !~ *-slurm/etc* ) then

if ( -f /opt/hptc/lsf/top/conf/cshrc.lsf ) then

source /opt/hptc/lsf/top/conf/cshrc.lsf

endif

The objective of these custom files is to source (once only) the appropriate LSF environment file, which

is:

• $LSF_ENVDIR/cshrc.lsf, for csh users

• $LSF_ENVDIR/profile.lsf, for users of sh, bash, and other sh-based shells.

Create /etc/profile.d/lsf.sh and /etc/profile.d/lsf.csh on the cluster to setup the

LSF environment on. Using /shared/lsf for the value of LSF_TOP as an example, the new files

look similar to the following:

[root@xc128 profile.d]# cat lsf.sh