Describe the resource usage reporting process at your site. Jobs resource usage informations are loaded into a central database on a daily basis, when the job has completed. Jobs charge informations are calculated through billing programs next morning for the previous days data. Current PBS system will enforce the quota allocation before a job is started but it doesn't monitor a job to see if the user has over-charged the allocation during the run. Cray C90 uses process accounting.
Every process is logged and charged.
Origin 2000 uses job accounting. User is not charged for processes on front-end system, turing. Novel utilization of the system. Evaluates performance of application codes on distributed computing resources 6. Optimization of application codes on research testbeds 7.