How do I request time on the large memory Petascale Data Analysis Facility (PDAF and PDAFM)?
Users can request large memory nodes by adding a “memory required” attribute to their job. All memory requests are rounded up to the nearest multiple of 128GB. Large memory nodes are allocated and charged in the following way: I. Exclusive Access Memory requests of 256GB or 512GB are scheduled as exclusive-use on nodes. You are charged for 32-cores at the appropriate rate (e.g. 64SU/256GB and 128SU/512GB) II. Shared Access 128GB and 384GB requests are always allocated on shared access nodes. With Shared Access, there may be resource contention for CPUs, network Bandwidth, or Memory Bandwidth. 128GB requests cost 32SU, 384GB requests cost 96SU. III. Access to Specific Memory Configurations The Triton node allocation policy favors PDAF nodes over more expensive PDAFM nodes, but this will not ensure a job will run on a PDAF node if a PDAFM node fits the scheduler’s plan.
