National Center for Computational Sciences

Queues are used by the batch scheduler to aid in the organization of jobs. Users may have access to multiple queues, and each queue may allow different job limits and have different priorities.

There are two queues on Frost: the default queue with a time limit of 2 hours and no process count limit and higher priority and the compute queue with a time limit of 8 hours limited to 64 nodes or fewer. Users may have no more than four jobs running and two jobs eligible to run.

1. batch queue

   • The standard default queue for development work.

   • All Frost users have access to the default queue.

   • Should be used for all development runs.

   • Limits

     • The maximum wall-time limit is 2 hours.

     • Users are not limited to a certain number of jobs at a time in the development queue.

     • There is not a maximum processor limit.

     • If your jobs require resources outside these limits, please complete the relevant request form on the special requests page.

2. computation Queue

   • The computation queue should be used for computational work.

   • The computation queue has a lower priority than the default queue, as the main focus of Frost is develoment work

   • All frost users have access to the computation queue.

   • Use

     • The computation queue should be used for all computational runs.

   • Limits

     • The maximum wall-time limit is 8 hours.

     • Users are limited to 64 nodes or fewer on the computation queue.

     • If your jobs require resources outside these limits, please complete the relevant request form on the special requests page.