Platform LSF Administration Guide Version 6.2

Registering utmp File Entries for Interactive Batch Jobs
Administering Platform LSF
528
Registering utmp File Entries for Interactive Batch
Jobs
LSF administrators can configure the cluster to track user and account information for
interactive batch jobs submitted with
bsub -Ip or bsub -Is. User and account
information is registered as entries in the UNIX
utmp file, which holds information for
commands such as
who. Registering user information for interactive batch jobs in utmp
allows more accurate job accounting.
Configuration and operation
To enable utmp file registration, the LSF administrator sets the LSB_UTMP parameter
in
lsf.conf.
When LSB_UTMP is defined, LSF registers the job by adding an entry to the
utmp file
on the execution host when the job starts. After the job finishes, LSF removes the entry
for the job from the
utmp file.
Limitations
◆ Registration of utmp file entries is supported only on SGI IRIX (6.4 and later).
◆ utmp file registration is not supported in a MultiCluster environment.
◆ Because interactive batch jobs submitted with bsub -I are not associated with a
pseudo-terminal,
utmp file registration is not supported for these jobs.