ARCHIVED: Queue information for IU research supercomputers

Carbonate employs a default routing queue that funnels jobs, according to their resource requirements, into two execution queues configured to maximize job throughput and minimize wait times (the amount of time a job remains queued, waiting for required resources to become available). Depending on the resource requirements specified in either your batch job script or your qsub command, the routing queue (BATCH) automatically places your job into the NORMAL or LARGEMEMORY queue:

• NORMAL queue: Jobs requesting up to 251 GB of virtual memory (qsub -l vmem=251gb)
• LARGEMEMORY queue: Jobs requesting from 251 GB up to 503 GB of virtual memory (qsub -l vmem=503gb)

You do not have to specify a queue in your job script or in your qsub command to submit your job to one of the two batch execution queues; your job will run in the NORMAL or LARGEMEMORY queue unless you specifically submit it to the DEBUG or INTERACTIVE queue, the properties of which are as follows:

• DEBUG: The DEBUG queue is intended for short, quick-turnaround test jobs requiring less than 1 hour of wall time.

  Maximum wall time:	1 hour
  Maximum nodes per job:	2
  Maximum cores per job:	48
  Maximum number of jobs per user:	2
  Direct submission:	Yes

  To submit a batch job to the DEBUG queue, either add the #PBS -q debug directive to your job script, or enter qsub -q debug on the command line.

  Note:

  For longer debugging or testing sessions, submit an interactive job to the INTERACTIVE queue instead.
• INTERACTIVE: Interactive jobs submitted to the INTERACTIVE queue should experience less wait time (start sooner) than interactive jobs submitted to the batch execution queues.

  Maximum wall time:	8 hours
  Maximum cores per job:	8
  Maximum number of jobs per queue:	128
  Maximum number of jobs per user:	2
  Direct submission:	Yes

  To submit an interactive job to the INTERACTIVE queue, on the command line, enter qsub with the -I and -q interactive options added; for example:

    qsub -I -q interactive -l nodes=1:ppn=1,walltime=4:00:00
  

  Note:

  If you enter qsub without the -q interactive option, your interactive job will be placed in the routing queue for submission to the NORMAL or LARGEMEMORY batch execution queue, which most likely will entail a longer wait time for your job.