What thread options are available for the alpha machines?

As you might have noticed more material is needed for the chapter on threads. I need 7 pages papers extending the subject into the following areas:

*Pthreads in general – how implemented, how blocking is prevented.

*What thread options are available for the alpha machines?

*We know we have pthreads and should have the JVM.

*What is the hardware and software configuration of the alpha machines?

*What is the OS? What are the machines?

Please list references and do not plagiarize

I need the papers ASAP