NERSCPowering Scientific Discovery Since 1974

Allocation Reductions

Projects that are not using their allocation at a certain pace may have time returned to the allocation pool of their respective DOE Office of Science Program. (ALCC, Director's Reserve, Exploratory, and Educational projects are exempt from this reduction.) During AY 2022, we will be reviewing and removing only CPU Node hours. GPU node hours will be exempt. Projects are reminded that they may still run, in the Overrun queue, when they have exhausted their allocation for the year.

Allocation Year 2022

The following schedule will be used for Allocation Year 2022 (which runs from January 19, 2022 through January 17, 2023).

On May 19, 2022:

  • If a project has used > 5% and <= 10% of its CPU node hour allocation, we will reduce their allocation by removing 10% of the unused balance.
  • If a project has used <= 5% of its CPU node hour allocation, we will reduce their allocation by removing 20% of the unused balance. 

On September 15, 2022:

  • If a project has used > 10% but <= 25% of its CPU node hour allocation, we will reduce their allocation by removing 25% of the unused balance.
  • If a project has used <= 10% of its CPU node hour allocation, we will reduce their allocation by removing 50% of the unused balance.

Project Principal Investigators, PI Proxies or Project Resource Managers can request exemptions to this policy, but must make the request at least one week before the reductions are scheduled to take effect. Please make a request by creating a ticket at https://help.nersc.gov and include justification for the exemption.