You must be logged on as the job owner.
The output from a job is normally not available until the job is finished. However, LSF provides the bpeek command for you to look at the output the job has produced so far.
By default, bpeek shows the output from the most recently submitted job. You can also select the job by queue or execution host, or specify the job ID or job name on the command line.
To save time, you can use this command to check if your job is behaving as you expected and kill the job if it is running away or producing unusable results.
For example:
bpeek 1234
<< output from stdout >>
Starting phase 1
Phase 1 done
Calculating new parameters
...