Platform LSF Reference Version 6.2

lsloadadj
Platform LSF Reference
228
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 section of the resource
requirement string is considered (see
lsfintro(1)). 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.