GNU Parallel: set remote server run on 1 job with all CPU

Question

I have jobs (multiprocessing python codes) that ideally take 4 CPUs to run on each remote machine. In GNU parallel, how do I set up the arguments to make each remote server (assuming 4 cores) run one job at a time, using all its 4 cores on the same job (instead of using its 4 cores to run 4 job by default)

Answer 1

Run (25% of 4 cores) jobs in parallel with each 4 args:

-j 25% -N4