The y-jobs are run through the use of a csh script file that is submitted onto the machine. The jobs are run on Wednesdays in the very early morning (between 12 a.m. and 12 p.m. - see http://computing.oac.ucla.edu/ for more information on all this). The csh script below contains the commands that are submitted, as a whole, onto the job queue. By convention, you should name it with a .q extension. The job files are of this form: 

--- next line is first line of queue file ---
#!/bin/csh
# @ initialdir = /u/data01/iegbtcp/trials_4_14_98/sim/02hosts
# @ error = sweep_sim_loc64.us.2hosts.1.2.1.1.50cubed.error
# @ output = sweep_sim_loc64.us.2hosts.1.2.1.1.50cubed.out
# @ group = y
# @ class = y
# @ min_processors = 2
# @ max_processors = 2
# @ job_type = parallel
# @ requirements = (Adapter=="hps_user")
# @ notification = never
# @ notify_user = phantom@cs.ucla.edu
# @ queue
unsetenv MP_HOSTFILE
cd /u/data01/iegbtcp/trials_4_14_98/sim/02hosts
rm -f hostfile

poe /u/data01/iegbtcp/trials_4_14_98/sim/02hosts/sweep_sim_loc64 -euilib us 2
-ttp 1 2 1 1 50 -ttp > sweep_sim_loc64.us.2hosts.1.2.1.1.50cubed.data
---
Important issues to note are the following:
  1. Make sure the directories are correct for your jobs.
  2. The m*_processors specify the number of physical processors to be used. I think the limit is 24, but I'm not sure.
  3. The last line executes poe with the name of your program as an arg. Poe is a load-levelling program that is required. Do 'man poe' for more information than I could possibly provide.
  4. Note the auxilary files that are created for error and output. I don't think the 'output' variable is actually used, so that is why we are redirecting our program's output to a .data file.
To submit a job, place this script into a file (call it something.q or similar) and submit using 'llsubmit something.q'. Note that llsubmit only takes one argument; you'll have to call it several times to submit multiple jobs. To check the status of jobs, use 'llq' to see all jobs on the queue or 'myjobs' to see just yours.