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The accounting on the HPCF is currently based on the total elapsed time for the cores allocated to serial or parallel batch jobs. To reflect the current system configuration and performance the formula to compute SBU will change changed on 1 January 2024 to:
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Compared to 2023 the SBU cost of the same job in 2024 will be is ~10.8% less .
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where: | P = 470410408 / (8098 * 128 * 86400) | is a fixed proportionality factor, adjusted so that the entire Atos system will deliver 470,410,408 SBU per day on a "typical"
ECMWF job mix on the HPC system (8098 * 128 is the total number of physical cores used to run batch jobs and 86400
the number of seconds in a day). | | N | Is the number of (physical) cores allocated to a job. | | T | is the elapsed time (real time in seconds) recorded for a job. | Examples: - A serial job using 1 hour (3600 seconds) of elapsed time will be charged about 18.91 SBU.
- A parallel job requesting 2 nodes, running for 3 hours elapsed time will be charged 14522.43 SBU.
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