ASC Dedicated Application Time Request

Tri-Laboratory and University Alliance Center scientists and engineers primarily access the LLNL Advanced Simulation and Computing (ASC) systems through an automated resource management and accounting tool that obeys a developed policy for routine computing. When necessary, users may also receive expedited access to the systems that would allow them to run larger problems for longer periods of time. The “non routine” runs need to be justified on the basis of their priority to the program. This form lets you submit a request for a priority run on Cab, Sequoia, or Vulcan.

Here's a more detailed explanation of the: Policies for Expedited Priority Runs on LLNL ASC Platforms

(for after-hours/weekend communications)
Select the machine(s) you wish to access.
Please specify

NOTE: Dedicated runs will be done over weekends, from 16:00 Friday to 08:00 the following Monday.

(hours or days, specify in wall-clock time)
Please specify user's name, login name, e-mail address, alternate e-mail address, work phone, and additional contact phone (cell or home).
(i.e., manager who is aware of programmatic priority)

Data requirements (specify units: MB, GB, or TB)

(Operators can perform commands such as ls, head, tail, and cat, but cannot do other actions as if they were logged in as the DAT user.)

Guidance for Dedicated Application Runs on ASC Resources

The preferred day of the week for the priority runs is the day of the normal preventive maintenance (PM) for the machine for these runs. Prime time (8 a.m.–5 p.m.) scheduling is considered to be exceptional (relatively rare).  It is preferred that debug runs in preparation for priority runs be requested for scheduling after the weekly scheduled PM time. Full machine or expedited priority runs will be scheduled during evenings and weekends to the extent possible. Expedited priority runs will be announced at least 3 days in advance. Dedicated time (for both daytime and off-hour runs) will also be announced at least 3 days in advance. Regular batch work will be re-enabled whenever dedicated runs are completed or cannot continue. Requests for expedited priority runs should be made with as much advanced notice as possible.

Priorities will be given in this order:

  1. Capability Computing Campaign (CCC) projects
  2. Stockpile Stewardship Program (SSP) or University Alliance Center milestone or “site-visit” runs
  3. SSP Priority calculations
  4. “Big science” calculations
  5. Code development in support of above, or systems tuning for performance
  6. Anything ASC related
  7. All other runs.

Finer-grained decisions (for instance, between competing candidates in the same category) will be mediated during the Priority Runs scheduling meetings and resolved, if necessary, by appeal to the LLNL ASC Program Office. When exceptions to the policies are desired, they must be approved by either the LLNL ASC Program Office or LC Management.