Platform LSF Reference Version 6.2

Parameters
Platform LSF Reference
550
LSF_INTERACTIVE_STDERR
Syntax
LSF_INTERACTIVE_STDERR=y
| n
Description
Separates stderr from stdout for interactive tasks and interactive batch jobs.
This is useful to redirect output to a file with regular operators instead of the
bsub -e
err_file
and -o out_file options.
This parameter can also be enabled or disabled as an environment variable.
WARNING
If you enable this parameter globally in lsf.conf, check any custom scripts
that manipulate stderr and stdout.
When this parameter is undefined or set to n, the following are written to stdout on
the submission host for interactive tasks and interactive batch jobs:
◆ Job standard output messages
◆ Job standard error messages
The following are written to
stderr on the submission host for interactive tasks and
interactive batch jobs:
◆ LSF messages
◆ NIOS standard messages
◆ NIOS debug messages (if LSF_NIOS_DEBUG=1 in lsf.conf)
When this parameter is set to
y, the following are written to stdout on the submission
host for interactive tasks and interactive batch jobs:
◆ Job standard output messages
◆ The following are written to stderr on the submission host:
◆ Job standard error messages
◆ LSF messages
◆ NIOS standard messages
◆ NIOS debug messages (if LSF_NIOS_DEBUG=1 in lsf.conf)
Default
Undefined
Notes
When this parameter is set, the change affects interactive tasks and interactive batch jobs
run with the following commands:
◆ bsub -I
◆ bsub -Ip
◆ bsub -Is
◆ lsrun
◆ lsgrun
◆ lsmake (Platform Make)
◆ bsub pam (Platform LSF HPC)
Limitations
◆ Pseudo-terminal—Do not use this parameter if your application depends on
stderr as a terminal. This is because LSF must use a non-pseudo-terminal
connection to separate
stderr from stdout.
◆ Synchronization—Do not use this parameter if you depend on messages in stderr
and
stdout to be synchronized and jobs in your environment are continuously
submitted. A continuous stream of messages causes
stderr and stdout to not be