Here are links to a couple of articles on .NET Task Parallel Library written by Rod Stephens. Here is an excerpt:

“For several years, programming tools have allowed you to use multiple threads in the same program. Multiple threads may be able to run on multiple CPUs within your computer so multi-threading sometimes provides nice speed improvements. Unfortunately, while multi-threading requires less overhead than distributing applications across a network, it’s still fairly tricky.

Microsoft’s new Task Parallel Library (TPL) provides a new approach for using multiple threads. It provides a set of relatively simple method calls that let you launch a group of routines all at once.

This article provides an introduction to TPL. It explains the main pieces of TPL and provides simples examples. A follow-up article will describe performance effects resulting from converting some of the programs I’ve written for other articles to use TPL.”

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Part 2: Multi-Core Case Studies