Forcing multiple threads to use multiple CPUs when they are available

Question

I\'m writing a Java program which uses a lot of CPU because of the nature of what it does. However, lots of it can run in parallel, and I have made my program multi-threade

Answer 1

There is no way to set CPU affinity in Java. http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4234402

If you have to do it, use JNI to create native threads and set their affinity.