SimScale CAE Forum

What is the definition of a core hour?

A core hour refers to the number of processor units (cores) used to run a simulation multiplied by the duration of the job in hours. With 1 core hour you can simulate for 1 hour on a 1 core machine, 30 minutes on a 2 core machine and so on. For additional computing capacity booking please send an email to

I am curious how the core time is defined. My current use is 13 hours and yet I have done very few simulations each running less that 10 min.

Hi @hermanowicz, there is a detailed breakdown of the core hours (or core minutes) used for each job that can be found in your account profile which you can access in the upper right hand corner of the Dashboard or Workbench.

You can then select Manage Account -> Usage Overview to view this breakdown.

I hope this helps, and don’t hesitate to let me know if you need any more details!