What Makes Parallel Programming Difficult?

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An anonymous reader writes "Intel's Aater Suleman writes about why parallel programming is difficult. ... I was unaware ... that a major challenge in multi-threaded programming lies in optimizing parallel programs not just getting them to run. His analysis is insightful and the case study is very enlightening if you are unfamiliar with parallel code debugging. "http://a.fsdn.com/sd/facebook_icon_large.png (http://www.facebook.com/sharer.php?u=http%3A%2F%2Fdevelopers.slashdot.org% 2Fstory%2F11%2F05%2F27%2F1831251%2FWhat-Makes-Parallel-Programming-Difficult%3Futm_source%3Dslashdot%26utm_medium%3Df acebook) http://a.fsdn.com/sd/twitter_icon_large.png (http://twitter.com/home?status=What+Makes+Parallel+Programming+Diffic ult%3F%3A+http%3A%2F%2Fbit.ly%2FkxmKaY)
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