Hello, I've uploaded code to boost vault which allows to bind/unbind current thread to a processor. boost::this_thread::bind_to_processor( unsigned int n); // thread gets bound to processor n boost::this_thread::bind_to_any_processor(); // thread can be scheduled to all available processors platforms: Windows, Linux, Solaris, HP/UX, AIX, IRIX best regards, Oliver -- Der GMX SmartSurfer hilft bis zu 70% Ihrer Onlinekosten zu sparen! Ideal für Modem und ISDN: http://www.gmx.net/de/go/smartsurfer