Welcome as users on the AHPCC Pinnacle HPC system! As Pinnacle is a shared resource used by many concurrent researchers at any given time, it's very important to observe a few basic rules so as to ensure that everyone enjoys a favorable user experience…
ALL jobs are required to be submitted to compute nodes thru use of the SLURM Job Scheduler. Running computationally intensive tasks (or memory intensive tasks) on the login nodes is prohibited. Such jobs will be killed by administrators.
Job queues determine which specific resources a user can request, both in terms of run time and specific hardware. AHPCC requires that users select the appropriate queue for their job submissions at all times. Jobs that are incorrectly submitted to queues that don't match the application will be killed by administrators. Submitting to alternate queues just because the appropriate queue is busy is not allowed!
Research groups who have participated in the condo purchase plan and “own” resources that are integrated into the Pinnacle system should fully utilize those systems FIRST before assigning jobs to the general purpose queues. This helps to ensure that everyone has access to adequate resources to get their research done. AHPCC administrators continuously work to adjust queue parameters to best balance the needs of all researchers. Condo resources can be particularly beneficial of a group or user has a regular requirement to run tasks beyond the standard walltime maximum of 72 hours.
HPC Clusters like Pinnacle aren't ideally suited for interactive jobs (srun) where constant user attention is required. Please be mindful when running these interactive jobs that, when the resource is not being used, cancel the session so that others may utilize the resources until you need it again. Leaving these sessions running idle and unattended is strongly discouraged.
For inquiries about software installations, assistance with job scripts, assistance trouble shooting a failed run, etc…please provide any of the following information that would apply to the issue in an email to HPC-SUPPORT@listserv.uark.edu
Users should be conscientious when submitting lots of jobs to the system. Remember, you are sharing the resource with up to 800 other users! While SLURM Job Scheduler parameters typically manage workflow for the system, it is considered bad etiquette to try and submit as many jobs (packing the system) as the resource will allow, or occupying all of a particular resource type (such as Himem or GPU nodes). Everyone's research is equally important in the context of system use. If you desire higher priority, please see one of the AHPCC staff about a possible equipment purchase thru our Condo program.