Giuseppe -
Interesting! I'm not sure about the parallelized node operations, but I also confess that I'm not sure if you're wanting to keep all of your cores busy, or if you're wanting to restrain BaseX from using too many cores. If you're leveraging GNU parallel to control a BaseX instance, I assume you're using `-j|--jobs` to set a limit on the number of BaseXes.. BaseXen? BaseXeses... :) launched.
Would you be able to share an example of how you're approaching your problem? Someone may be able to give suggestions based on it.
Best,
Bridger