The script now computes it for you.

README.md

@@ -191,7 +191,6 @@ This process should take around 1–2 hours and requires 20 GB of free disk spac
 
 By default, the script will use all available threads (up to the number of processes to be run, which is 16), but you can use `-n NUM_PERFORMANCE_CORES` to restrict it to use only the first `NUM_PERFORMANCE_CORES` threads.
 If these are not the ones you want to use, you can instead specify `-N PERFORMANCE_CORE_RANGE` to indicate the specific threads to use.
-The script does not compute this for you.
 
 Examples:
     -n 16           Use threads 0-15