[intrepid-notify] REMINDER: ALCF BG/P Intrepid Scheduling Policy Change Notification (5-Apr-2010)

[Tisha Stacey]

This is a reminder that the scheduling change described below will be taking place this Monday, April 5, 2010.  We will stop scheduling at 10:00 a.m. U.S. Central time on Monday, and we expect to release the system no later than 12:00 noon.  As usual, we will send an announcement when the system is available for regular use again.

Thank you,
The ALCF Support Team

Bowen Cheetah Goletz wrote:
| ALCF User Community:
| 
| In order to improve response time for large jobs and overall
| utilization of the ALCF BlueGene/P machine "intrepid", the job
| scheduling policy will be modified on Monday, April 5th.  On that
| date, the following change will go into effect:
| 
| Jobs submitted to the prod queue requesting 4K or fewer nodes but
| greater than six hours wall time will be restricted to rows 4 and 5.
| 
| All other job and scheduling limits remain the same, and there are no
| changes to the prod-devel queue.  Users should still submit their jobs
| to the prod or prod-devel queues as before and no changes to
| submission scripts are required.
| 
| Users should see a noticeable improvement in response time for large
| jobs running on 8K and 16K partitions, with such jobs starting within
| six hours of submission (barring several other large jobs already
| running).  We also expect increased scheduler efficiency for small
| sub-six hour jobs.  Jobs submitted to the 'prod' queue will
| automatically reroute to the queue appropriate for the job parameters.
| 
| Note that the full machine is five rows of eight 1K-node racks.
| 
| The full description of the job scheduling policy is available on the
| ALCF wiki: https://wiki.alcf.anl.gov/index.php/Job_Scheduling_Policy
| 
| 
| -ALCF Support Team
| _______________________________________________
| intrepid-notify mailing list
| intrepid-notify at lists.alcf.anl.gov
| https://lists.alcf.anl.gov/cgi-bin/mailman/listinfo/intrepid-notify