Command Reference Guide

Platform LSF Command Reference 257
lsloadadj
adjusts load indices on hosts
Synopsis
lsloadadj [-R res_req] [host_name[:num_task] ...]
lsloadadj [-h | -V]
Description
Adjusts load indices on hosts. This is useful if a task placement decision is made
outside LIM by another application.
By default, assumes tasks are CPU-intensive and memory-intensive. This means
the CPU and memory load indices are adjusted to a higher number than other load
indices.
By default, adjusts load indices on the local host, the host from which the command
was submitted.
By default, starts 1 task.
Upon receiving a load adjustment request, LIM temporarily increases the load on
hosts according to resource requirements. This helps LIM avoid sending too many
jobs to the same host in quick succession. The adjusted load decays over time before
the real load produced by the dispatched task is reflected in LIM’s load information.
lsloadadj adjusts all indices except for ls (login sessions), it (idle time), r15m
(15-minute run queue length) and external load indices. Other load indices can
only be adjusted beyond specific maximum values.
◆ tmp is -0.5
◆ swp is -1.5
◆ mem is -1.0
◆ r1m is 0.4
◆ ut is 15%
Options
-R res_req Specify resource requirements for tasks. Only the resource usage (rusage) section
of the resource requirement string is considered. This is used by LIM to determine
by how much individual load indices are to be adjusted.
For example, if a task is swap-space-intensive, load adjustment on the
swp load
index is higher; other indices are increased only slightly.
host_name[:num_task] ...
Specify a list of hosts for which load is to be adjusted. num_task indicates the
number of tasks to be started on the host.
-h Prints command usage to stderr and exits.
-V Prints LSF release version to stderr and exits.