Posted by Giovanni Idili on May 22, 2011; 7:34pm
URL: https://forum.jogamp.org/Parallel-computation-on-CPU-faster-than-GPU-tp2963506p2972615.html

Michael Bien wrote

if you don't block your java program will not wait for any results.

Thanks Michael, that explains it, should've probably guessed really since it says it's an asynchronous operation!