Hi all I am doing my first steps in using boost::unique_future and below the example of usage that arose my question. Looking at the C++0x I can see that you can create a future using std::async. If I understood correctly the good thing of it is that, based on some policy that I imaging to be related to number of core availables+other things, std::async will choice for you whether to run your functions in a specific thread, or using a ThreadPool or other available resources. With the code I did below, once I have 2 functions I am forced to use alwyas 2 threads. Do you know what are the alternatives in Boost/ Boost Thread and if right now there is/there will be an equivalent of std::async in Boost? Thanks int firstBigOne(){ for( int i = 0; i < 3; i++ ){ std::cout << "firstBigOne" << std::endl; boost::this_thread::sleep( boost::posix_time::milliseconds(200) ); } return 10; } int secondBigOne(){ for( int i = 0; i < 4; i++ ){ std::cout << "secondBigONe" << std::endl; boost::this_thread::sleep( boost::posix_time::milliseconds(200) ); } return 20; } void TestC(){ try{ boost::packaged_task<int> pt1(firstBigOne); boost::packaged_task<int> pt2(secondBigOne); boost::unique_future<int> f1=pt1.get_future(); boost::unique_future<int> f2=pt2.get_future(); boost::thread t1( boost::move( pt1 )); boost::thread t2( boost::move( pt2 ));