As I understand, in TBB we focus on task creation. The thread creation is taken care of by TBB internally. Now, if there is an error, what tools can I use to debug issues? The query is more specifically about understanding which threads created by TBB are being used for computation (in a loop or a task) and the others which could be status threads or that are sleeping or inactive. The problem statement is about understanding which threads to focus and which ones are causing issues? What kind of debugger that I can use?