Use more CPU cores

[satoshi]

Hi there,
is there a way to run a Qt application using all the cores of the CPU? I've a two-core CPU and there are two threads in my program. This application has to be as fast as possible, a smart thing will be assign a thread for each core. Is it possible?

If yes, is there a way to determine the number of CPU cores of the machine where the application is running?

Sorry for my english

Thanks, Dario