Platform LSF Reference Version 6.2

Parameters
Platform LSF Reference
532
◆ -extsched option of bsub
◆ DEFAULT_EXTSCHED and MANDATORY_EXTSCHED in lsb.queues
Default
32
LSB_SLURM_BESTFIT
Syntax
LSB_SLURM_BESTFIT=y
| Y
Description
Enables best-fit node allocation for HP XC SLURM jobs.
By default, LSF applies a first-fit allocation policy to select from the nodes available for
the job. The allocations are made left to right for all parallel jobs, and right to left for all
serial jobs (all other job requirements being equal).
In a heterogeneous XC machine, a best-fit allocation may be preferable for clusters
where a mix of serial and parallel jobs run. In this context, best fit means: “the nodes
that minimally satisfy the requirements.” Nodes with the maximum number of CPUs are
chosen first. For parallel and serial jobs, the nodes with minimal memory, minimal tmp
space, and minimal weight are chosen.
Default
Undefined
LSB_SBD_PORT
See “LSF_LIM_PORT, LSF_RES_PORT, LSB_MBD_PORT, LSB_SBD_PORT” on
page 555.
LSB_SET_TMPDIR
Syntax
LSB_SET_TMPDIR=y
| n
If y, LSF sets the TMPDIR environment variable, overwriting the current value with
/tmp/job_ID.
Default n
LSB_SHAREDIR
Syntax
LSB_SHAREDIR=
dir
Description
Directory in which the job history and accounting logs are kept for each cluster. These
files are necessary for correct operation of the system. Like the organization under
LSB_CONFDIR, there is one subdirectory for each cluster.
The LSB_SHAREDIR directory must be owned by the LSF administrator. It must be
accessible from all hosts that can potentially become the master host, and must allow
read and write access from the master host.
The LSB_SHAREDIR directory typically resides on a reliable file server.
Default LSF_INDEP/work
See also
LSB_LOCALDIR
LSB_SHORT_HOSTLIST
Syntax LSB_SHORT_HOSTLIST=1