LSF_DAEMONS_CPUS

Syntax

LSF_DAEMONS_CPUS="mbatchd_cpu_list:mbschd_cpu_list"

mbatchd_cpu_list: Defines the list of master host CPUS where the mbatchd daemon processes can run (hard CPU affinity). Format the list as a white-space delimited list of CPU numbers.
mbschd_cpu_list: Defines the list of master host CPUS where the mbschd daemon processes can run. Format the list as a white-space delimited list of CPU numbers.

Description

By default, mbatchd and mbschd can run on any CPUs. If LSF_DAEMONS_CPUS is set, they only run on a specified list of CPUs. An empty list means LSF daemons can run on any CPUs. Use spaces to separate multiple CPUs.

The operating system can assign other processes to run on the same CPU; however, if utilization of the bound CPU is lower than utilization of the unbound CPUs.

Related parameters

To improve scheduling and dispatch performance of all LSF daemons, you should use LSF_DAEMONS_CPUS together with EGO_DAEMONS_CPUS (in ego.conf or lsf.conf), which controls LIM CPU allocation, and MBD_QUERY_CPUS, which binds mbactchd query processes to specific CPUs so that higher priority daemon processes can run more efficiently. To get best performance, CPU allocation for all four daemons should be assigned their own CPUs. For example, on a 4 CPU SMP host, the following configuration gives the best performance:

EGO_DAEMONS_CPUS=0 LSF_DAEMONS_CPUS=1:2 MBD_QUERY_CPUS=3

Examples

If you specify

LSF_DAEMONS_CPUS="1:2"

the mbatchd processes run only on CPU number 1 on the master host, and mbschd run on only on CPU number 2.

If you specify

LSF_DAEMONS_CPUS="1 2:1 2"

both mbatchd and mbschd run CPU 1 and CPU 2.

Important

You can specify CPU affinity only for master hosts that use one of the following operating systems:

Linux 2.6 or higher
Solaris 8 or higher

EGO parameter

LSF_DAEMONS_CPUS=lim_cpu_list: run the EGO LIM daemon on the specified CPUs.

Default

Not defined