Overview of CHPC allocations
CHPC awards allocations on the general resources of the kingspeak and ember clusters based on proposals submitted to a review committee. The allocation is awarded to the CHPC PI, and access to the allocation is made available to all members of the group. Jobs from groups with allocation run at a higher priority and can preempt jobs running without allocation. Note that lonepeak general nodes are run in an unallocated manner.
Other resources on the clusters are "owned" by other PIs and your jobs will not be able to run on those nodes at priority unless you are a member of that group. You may run on the "owner nodes" by changing the SBATCH directives for the account and partition as desciribed on the SLURM documentation page. Your job can thus be run on any idle owner nodes, at low priority, but your job can be pre-empted (killed) if a member of the owner's group submits a job.
Allocations are measured in wallclock core hour which are 1 hour of wallclock time for each core on a node. For more details see our HPC Allocation Policy. Allocations are managed on a calendar quarter.
There are two kinds of allocation:
- Quick allocation request (1 quarter only, 30000 wallclock core hours)
- Allocation request (submitted at most quarterly for up to 4 quarters at a time)
Quick allocation process
Quick allocations are for PIs who are new to having a CHPC allocation. PIs may submit a quick allocation request which is for 30000 wallclock core hours for the current calendar quarter at any time during the quarter. It is expected that after gaining experience using our systems with the quick allocation, the allocation process (below) should be followed. Quick allocations are reviewed by senior CHPC staff and awarded at CHPC's discretion.
Requests for allocations are accepted 4 times per year. The due dates for the four opportunities are set each quarter:
- Early December (for allocation beginning January 1st)
- Early March (for allocations beginning April 1st)
- Early June (for allocations beginning July 1st)
- Early September (for allocations beginning October 1st)
The exact dates are set each quarter and announced through the chpc-hpc-users mailing list.
PIs are asked to submit a request for the four upcoming calendar quarters. Your allocation request will then need to be renewed the following year by submitting another request. You may ask for fewer quarters, but if you expect to be using our systems long term we request that you submit a full year request. If you find your allocation amount needs to be adjusted, you can submit a new request to replace your existing request at any allocation cycle during the year.
Allocation requests must be submitted by a CHPC PI or designated delegate. To specify a delegate, please email email@example.com and provide the name and uNID of the user you wish to have allocation delegate rights. (You may also specify a delegate for approving accounts.) Please fill out the allocation request form completely! The committee particularly needs to see your justification for the number of core wall clock hours you have requested. If you are new to the allocation process, feel free to take a look at this Sample Application. It is good to have a track record using our systems via the quick allocation process and smaller allocations before you request a large allocation. Be sure to list your sources of funding, including granting agency and grant/contract numbers. It is also important to let us know of publications resulting from work supported by CHPC. This information is critical to us as it helps us continue to support the computation research community. The more you succeed, the more we succeed. Our mission to to help you get your research done!
For more information see: