Multithreading
CadnaA calculations are executed with multi-threading on multiple logicalcores (threads) in parallel. The maximum number of cores used may be limited by the hardware, software version or license.
Used Processors
By default, the option „All available“ is selected on dialog Calculation|Multithreading. Alternatively, CPU usage can be extended to all cores or to a selection of cores.

Make your selections and close the dialog with OK. CadnaA will save the settings and reload them after a restart.