ACM Queue has good explanations of where hardware is going and how to scale software into the multiprocessing era.
The introduction of CMP systems represents a significant opportunity to scale systems in a new dimension. The most significant impact of CMP systems is that the degree of scaling is being increased by an order of magnitude: what was a low-end one- to two-processor entry-level system should now be viewed as a 16- to 32-way system, and soon even midrange systems will be scaling to several hundred ways.
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