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Compared to 2023 the SBU cost of the same job in 2024 will be ~10% ~10.8% less . 

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titleSBU formula in 2023


Panel

SBU = P * N * T

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:

  1. A serial job using 1 hour (3600 seconds) of elapsed time will be charged about 18.91 SBU.
  2. A parallel job requesting 2 nodes, running for 3 hours elapsed time will be charged 14522.43 SBU.

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