这个是rice大学开发的一个并发类库，不算很流行，但是比较好用，github地址
一句话简介如下：
PCDP is a shared-memory, pedagogical, parallel programming framework. PCDP‘s design, implementation, and APIs emphasize simplicity to make it straightforward to use for programmers new to parallel programming. PCDP supports task parallelism, loop parallelism, actor parallelism, bulk synchronization, point-to-point synchronization, and isolation. PCDP is built on top of the Java Fork-Join framework, but offers more convenient APIs.
看起来不算是一个production级别的（教学使用为主）框架，所以就不多废话了，有兴趣的可以自己去参考源代码。
原文：http://www.cnblogs.com/huangzifu/p/7631207.html