LSF Version 7.3 - Administering Platform LSF
Administering Platform LSF 243
Understanding Resources
Host name (hname)
Host name specifies the name with which the host identifies itself.
CPU factor (cpuf)
The CPU factor (frequently shortened to cpuf) represents the speed of the host
CPU relative to other hosts in the cluster. For example, if one processor is twice the
speed of another, its CPU factor should be twice as large. For multiprocessor hosts,
the CPU factor is the speed of a single processor; LSF automatically scales the host
CPU load to account for additional processors. The CPU factors are detected
automatically or defined by the administrator.
Server
The server static resource is Boolean. It has the following values:
◆ 1 if the host is configured to run jobs from other hosts
◆ 0 if the host is an LSF client for submitting jobs to other hosts
Number of CPUs (ncpus)
By default, the number of CPUs represents the number of physical processors a
machine has. As most CPUs consist of multiple cores, threads, and processors,
ncpus can be defined by the cluster administrator (either globally or per-host) to
consider one of the following:
◆ Processors
◆ Processors and cores
◆ Processors, cores, and threads
Globally, this definition is controlled by the parameter
EGO_DEFINE_NCPUS in
lsf.conf or ego.conf. The default behavior for ncpus is to consider only the
number of physical processors (
EGO_DEFINE_NCPUS=procs).
NOTE: On a machine running AIX, ncpus detection is different. Under AIX, the number of detected
physical processors is always 1, whereas the number of detected cores is the number of cores
across all physical processors. Thread detection is the same as other operating systems (the
number of threads per core).
Number of disks (ndisks)
The number of disks specifies the number of disks a machine has.
Maximum memory (maxmem)
Maximum memory is the total available memory of a machine, measured in
megabytes (MB).
Maximum swap (maxswp)
Maximum swap is the total available swap space a machine has, measured in
megabytes (MB).