In all, it is not hard to see why there has been so little progress in parallel programming, even though multicore chips have been widespread for five years.
总之，这就是为什么不难理解在多核芯片广泛使用的五年间，并行编程上却很少有进展的原因。
No free lunch is involved, but an actor-based framework does make concurrency programming, and leveraging multicore processes, much easier.
世上没有免费的午餐，但基于角色的框架确实使并发编程以及利用多核进程变得更加简单。
The final two chapters focus on programming multicore computers.
最后的两个章节着重于多核计算机的程序设计。
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