LSF Version 7.3 - Using Platform LSF HPC

Configuring LSF with SGI Cpusets
Automatic configuration at installation and upgrade
During installation and upgrade, lsfinstall adds the schmod_cpuset external
scheduler plugin module name to the PluginModule section of
lsb.modules:
Begin PluginModule
SCH_PLUGIN RB_PLUGIN SCH_DISABLE_PHASES
schmod_default () ()
schmod_cpuset () ()
End PluginModule
For upgrade, lsfinstall comments out the schmod_topology external scheduler
plugin name in the PluginModule section of
lsb.modules
During installation and upgrade, lsfinstall sets the following parameters in
lsf.conf:
◆ LSF_ENABLE_EXTSCHEDULER=Y
LSF uses an external scheduler for cpuset allocation.
◆ LSB_CPUSET_BESTCPUS=Y
LSF schedules jobs based on the shortest CPU radius in the processor topology
using a best-fit algorithm for cpuset allocation.
◆ LSB_SHORT_HOSTLIST=1
Displays an abbreviated list of hosts in
bjobs and bhist for a parallel job where
multiple processes of a job are running on a host. Multiple processes are displayed
in the following format:
processes *hostA
For upgrade, lsfinstall comments out the following obsolete parameters in
lsf.conf, and sets the corresponding RLA configuration:
◆ LSF_TOPD_PORT=port_number, replaced by LSB_RLA_PORT=port_number,
using the same value as LSF_TOPD_PORT.
Where port_number is the TCP port used for communication between the LSF
topology adapter (RLA) and
sbatchd.
The default port number is 6883.
◆ LSF_TOPD_WORKDIR=directory parameter, replaced by
LSB_RLA_WORKDIR=directory parameter, using the same value as
LSF_TOPD_WORKDIR
Where directory is the location of the status files for RLA. Allows RLA to recover
its original state when it restarts. When RLA first starts, it creates the directory
defined by LSB_RLA_WORKDIR if it does not exist, then creates subdirectories
for each host.