Hi, I found out that running() always return the value 0, doesn't matter if the shred is actually running or not. done() instead seems to work fine. I tried on my Linux machine running Ubuntu Studio 16.04 using ChucK 1.4.0.0. Here's a little script that shows the issue: 0 => int c; spork ~ loop() @=> Shred parallel; //---------MAIN--------- while( c < 5 ) { <<< "running(): " + parallel.running() + "\t||\t " + "done(): " + parallel.done() >>>; if( c == 2 ) { <<< "exiting the shred" >>>; parallel.exit(); } c++; 0.5::second => now; } //-------FUNCTIONS-------- function void loop() { while( true ) { 333::ms => now; } } Cheers, Mario -- Electronic Musician, Creative Coder, QA Engineer https://vimeo.com/creativecodingsalerno http://mbuoninfante.tumblr.com/ https://github.com/mariobuoninfante https://bitbucket.org/mariobuoninfante/